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!Process/!Guide
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File contents
!Process
===========================
256 colour image processing
by
Henrik Bjerregaard Pedersen
About !Process
================
!Process is a 256-colour sprite processing/manipulation program.
It enables you to manipulate 256-colour sprites in a variety of ways,
including noise-removal, sharpening, smoothening, inverting, colour
separation, conversion to black/white or greytones, edge-detection and more.
Besides that, !Process also includes some of the features found in !Paint or
other basic drawing packages.
The following is only a brief summary of the features of !Process. The
number of ways you can distort/alter/manipulate an image are endless, and
would therefor require a RATHER large !Help-file to describe in details.
The best (and most amusing) way to discover the possibilities in (and the
limits of) !Process, is to load an image and simply try the different
operations one by one. However, I strongly recommend that you read this file,
otherwise you may have trouble with some of the features.
Problems
==========
Whenever possible, you should ensure that the images you load into Process
are created without palette or mask, and that the spritefile contains only
one sprite.
Vocabulary
============
Source image ... the image from which pixels/information is READ.
Destination image ... the image to which pixels/information is WRITTEN.
Colour component ... a value in the range 0-255, describing the amount of
either RED, GREEN or BLUE. 0 is nothing, 255 is full.
Kernel ... a 3x3 matrix which is multiplied with the colour
components of a center pixel and its 8 neighbours.
The average of the 9 elements of the kernel is
calculated, and this becomes the colour of the center
pixel.
Image viewer ... any of the (from two to nine) image windows.
Starting
==========
Double click on the !Process-icon, and the program installs itself on the
iconbar.
!Process will claim approx. 160k as long as no image is loaded. After
loading an image, the wimpslot will be increased with at least twice the size
of the spritefile.
Stopping
==========
Select the option Quit from the iconbar menu.
If you end up in an endless loop of error messages, you can in most cases
exit the program by pressing DELETE while clicking on the OK icon in the
error box.
Loading
=========
Drag as spritefile containing a 256 colour sprite as the first sprite to the
iconbar icon, and it will be loaded and will appear in a window.
Click MENU when the mouse is inside this window, and the main menu appears.
Process will also load AIM files, Clear files (in 256 greytones) and sprites
with a 256 entry greyscaled palette.
After applying a filter/effect the processed image will appear in another
window. If you drag a spritefile to either of these windows, !Process will
attempt to load the file, but will fail if the first sprite in the file isn't
the same size and in the same mode as the original, or if the file has a
different size than the original.
Please note that !Process ignores the palette of the sprite, and simply uses
the default 256 colour palette.
Printing
==========
This isn't what !Process is best at. In fact, it doesn't print at all, so
what you'll need to do is to save the image (either to disc or directly to
!Paint) and then use !Paints printing facilities in conjunction with a
RISC OS PDriver to get your piece of art on paper.
Greyscaled images
===================
!Process accepts 3 types of greyscaled images:
AIM (256x256 pixels, 8 bpp, always greyscaled)
Clear (8 bpp, greyscaled palette)
Sprites (with a palette with 256 greyscaled entries).
Beside these, Process can convert any loaded colour sprite to 8 bpp
greytones.
Some of the operations provided by Process are meaningless when applied to
a greyscaled image (eg RGB separation, Greyscale conversion etc.). In these
cases the operation will be inaccesible/shaded in the menu.
Options
=========
When started, !Process reads the systemvariable Process$Options which may
contain the following options:
Name Meaning
-------------------------------------------------------------
max2 Sets the number of copies of the image !Process
max3 creates when a file is loaded.
max4 etc Minimum is 2, maximum is 9. If you don't set max
max9 or set it to an illegal value, max4 is used.
swap Automatic swapping on.
dma Disable DMA during lengthy calculations.
tools Show toolbox.
To perform RGB separation max4 is needed, to perform CMYK separation max5
is needed.
The system variable Process$WindowTitle holds the template string for the
text in the titlebar of the image viewers.
The variable is set in !Process.!Run, and may be altered to include any of
the given pieces of information:
Arg Substituted with
--------------------------
%%0 "Process"
%%1 The name (full path) of the sprite file
%%2 The name (last part) of the sprite file
%%3 The name of the sprite
%%4 The mode in which the sprite was created
%%5 Size X of sprite (pixels)
%%6 Size Y of sprite (pixels)
%%7 The image viewer's number (1 - max)
%%8 Zoom factor X
%%9 Zoom factor Y
Maps
======
Maps are tables translating one colour to another. 256-colour images use one
byte per pixel, so mapping is simply done using a 256-bytes table, so that a
byte with value n is translated into the n'th entry in the table.
Many of the operations in !Process are performed using maps, to name a few:
Invert, Add colour, RGB filter, Translate, Greytones, Brighten, Stretch
histogram, Equalize histogram, Expand/Reduce range etc.
It is possible to create your own map and apply it to the loaded image. If
you drag a 256-bytes Data-file (filetype &FFD) to any of the image viewers,
the file will be loaded and used as a map on that particular image.
You can edit the BASIC-program GenMap to suit your own purposes.
The colour selector
=====================
The colour selector is a window that pops up whenever a selected operation
needs a colour as input. The window contains three slidebars, Red, Green and
Blue which can be used to select the colour, which will be shown to the right
of the slidebars. The five icons at the bottom of the window are:
Pick Click on this and you can select a colour by clicking
SELECT in the source window.
Black Sets all three slidebars to 0 (=black).
White Sets all three slidebars to full (=white).
Cancel Abort the operation/close the window.
OK Apply the filter/effect/operation or close the window.
If you click ADJUST on either of the slidebars, all three bars will be moved.
The palette in the right side of the image can be used to select any of the
256 default colours used in 8 bpp modes.
The grey value selector
=========================
This is exactly the same as the colour selector, except that you only use a
single slidebar to select the colour/grey value.
The windows
=============
The two main windows in !Process are the source and destination windows.
The source window can be identified by the toolbox, the destination window
by the pane window with the arrows.
The toolbox
=============
The toolbox contains icons for various of the most frequently used
operations, such as zoom, pan, copy image, set colour etc. Most operations
can be aborted by selecting another operation or by clicking ADJUST on the
selected icon. From top to bottom, left to right, the icons are:
Select area
-----------
This works exactly as the menu option Misc.Image.Select area.
Use selected area
-----------------
If this icon is set (slabbed inwards) only the selected area of the
source image will be processed. If an area is selected and used,
pressing MENU over this icon will open a window containing icons to
control the selected area. These icons work in the same way as the
sub menu to the menu option Image.Select area.
Copy to destination
-------------------
This copies the source image (or the selected part of the source image)
to the destination image.
Copy from destination
---------------------
The reverse of 'Copy to destination'.
Calculate histogram
-------------------
Calculate and display the histogram of the source image.
Open RGB colour selector
------------------------
Swap images
-----------
Swap source and destination images.
Zoom
----
When this is selected, you can enlarge a portion of the image simply by
dragging a box in the source image window. Click MENU over this icon to
open a window with 8 preset zoom factors.
Painting tools
--------------
Click MENU over this to reveal the 8 painting tools:
Pencil
Filled rectangle
Rectangle
Filled circle
Circle outline
Lines
Flood fill
Global replace
Spraycan
Triangle fill
Triangle
Parallelogram fill
Parallelogram outline
Ellipse fill
Ellipse outline
Smooth line
Note that the painting tools write to the source image, NOT to the
destination image.
Pan
---
Simple, really.
The menus
===========
The icon bar menu
=================
Info
----
...with the usual program info window.
Views.Tidy
----------
Tries ever so hard to tidy the image viewers.
Views.----
----------
A list of all the image viewers.
Create image
------------
Creates a new blank image.
Drop file
---------
Quit
----
The main menu
=============
Miscellaneous.Options.Automatic swap
------------------------------------
If this options is selected, the source and destination image will be
swapped automatically after any operation has been applied to the image.
Miscellaneous.Options.Disable DMA
---------------------------------
If this option is selected, the sound and video DMA will be disabled
while !Process is processing an image. In hi-res modes on an ARM2 this
can increase processing-speed with as much 100% or more.
Miscellaneous.Options.Show toolbox
----------------------------------
If this option is selected, a toolbox will appear on the left side of the
source image window, and a pane window appears on the left side of the
destination image window.
Miscellaneous.Options.Normal panning
------------------------------------
Switches between the two different types of panning.
Miscellaneous.Options.Display in greytones
------------------------------------------
Displays the images (if they are in colour) in greytones.
Greyscaled image can also be shown in colour, by deselecting this option.
Miscellaneous.Edit pencil/spraycan
----------------------------------
Select this to set the shape/size of the pencil tool or the size/
intensity of the spraycan.
Miscellaneous.Plot type
-----------------------
This enables you to select which plot action the painting tools should
use. The default is Set, which means plot the selected colour. The other
possible plot actions are:
OR OR the colour in the image with the selected colour.
AND AND ......
EOR EOR ......
Invert Invert the colour in the image (ignore the selected
colour).
Don't plot Speaks for itself, doesn't it?
AND NOT AND the colour in the image with the inverse of the
selected colour.
OR NOT OR ......
The plot type affects all the painting tools except Spraycan, Flood fill
and Global replace.
Miscellaneous.Reload last
-------------------------
This enables you to reload the last saved image (for that particular
image viewer). In some cases you might experience an error like
'Not enough room in spritearea'. This will typically happen if the image
you are trying to reload has a palette, as !Process stores the images
without palette. There simply isn't room for the extra palette data.
Image.Image info
----------------
Leads to a window with image info.
Image.Convert to greyscale
--------------------------
Converts the image to 256 greytones. This cannot be reversed.
Image.Copy source image
-----------------------
Selecting this option will copy the source image to the destination
image.
Image.Select area
-----------------
This entry allows you to select a part of the image. Almost all
operations on the image will only have effect in the selected area.
Select the option, then click SELECT in one corner of the rectangle you
wish to select and click SELECT again in the other corner.
You can abort the cutting by clicking MENU.
If an area already has been selected, it is possible to adjust the
position/size of the area using the options in the sub-menu to this entry.
Extend top/bottom/right/left will move to appropiate side of
the rectangle to the top/bottom/right side/left side of the
full image.
Top/bottom/right/left neighbour will set the rectangle to an
area with the same width/height as before, but positioned
above/below/to the right of/to the left of the previous area,
so that no pixels overlap.
Image.Clear area
----------------
This will reset the selected part of the image to the full image.
Image.Use full image
--------------------
If this option is selected (ticked), the full image is be used.
Image.Use selected area
-----------------------
If this option is selected, only the selected part of the image will be
affected by the processing.
Range.Reduce range
------------------
This uses a simple algorithme to reduce the range of the colours in the
source image. All colours are moved towards a boring greytone (red, green
and blue = 128).
Range.Expand range
------------------
All colours are moved away from the greytone mentioned above.
Range.Calculate histogram
-------------------------
This calculates and displays the colour histogram of the image.
There will almost always be at least a small amount of both red, green
and blue in all images, even after the image has been thru e.g. a blue
filter. This is due to the fact that the bottom two bits of each byte is
common to the three colour components.
Range.Stretch
-------------
Stretches the colour range of the image. This will stretch a selected
part of the colour histogram so that this part fills the entire range.
If a colour component is outside the selected part it becomes either 0
(if below) or 255 (=full, if above).
Selecting a part of the histogram is done using the lowered rectangle
below the histogram. Clicking ADJUST in this sets the upper limit,
clicking SELECT sets the lower limit.
Range.Equalize
--------------
Histogram equalisation. This will attempt to equalize the histogram so
that there is a (roughly) equal number of pixels in each of the possible
shades.
Range.Transfer median
---------------------
Calculates the mean colour of the image, and transfers it to the RGB
colour selector. This is especially useful if you want to convert a
colour image to greytones, as the mean colour will ensure a reasonably
good conversion.
Range.Colour correction
-----------------------
Uses one of three algorithems to perform colour-correction. The curve
shows 'New colour' vs 'Old colour'.
Gamma (Gamma-correction): Each colour-component is translated to a new
colour using the formula: NewCol = (OldCol ^ Gamma)
Gamma is set using the two up- and down-icons.
Gamma-correction is particually useful on scanned/digitized images.
P-lin: Basically the same as Gamma-corr. You can adjust the curve by
clicking SELECT on it.
Step: Allows you to control the translation of each RGB value to a new
RGB-value.
Process.Invert
--------------
This will invert the image, giving a negative image.
Process.Remove TINT
-------------------
This simply removes the bottom two bits (the TINT part) of all pixels in
the source image.
Process.Brighten
----------------
This adds a small amount to each of the colour components, giving a
brighter image.
Process.Darken
--------------
The reverse of Brighten.
Process.Black & White
---------------------
Converts the image to black and white. The colour components are weighted
according to the selected colour, the median of the three components are
calculated, and if this is above 50% intensity, the pixel becomes white
otherwise it becomes black.
Process.Greytones
-----------------
Converts the image to greytones. The colour components are weighted
according to the selected colour, the median of the three components are
calculated and this is used to select a greytone.
The sensitivity of the eye is approx. 3:5:1 (red,green,blue).
Process.Threshold
-----------------
Converts the image to black and white using thresholding.
Thresholding means that any pixel with 2 or 3 colour components above the
selected colour will become white, the rest will become black.
Process.Add colour
------------------
Adds an variable amount of colour to the red, green and blue colour
components.
Process.Sub colour
------------------
The reverse of Add colour.
Process.RGB filter
------------------
This acts like a sort of coloured glass you put in front of the image.
If the glass is blue, only the blue parts of the image will pass thru
the glass.
Process.Translate
-----------------
The colours in the destination image becomes a weighted sum of the
colour components from the source image, eg:
New RED = 30% Old RED + 60 % Old GREEN + 40% Old BLUE (etc.)
Anything above 100% is cut off.
Process.Shade
-------------
All colours are move towards the selected colour. How much they are
moved is set using the Effect slidebar in the colour selector.
Process.Isolate
---------------
This will turn all pixel black, except for those that are in the same
colour as the selected colour (these are turned white).
Process.RGB separation.True colour
----------------------------------
Process.RGB separation.8 bit per pixel
--------------------------------------
Works only if you've got 4 (or more) copies of the image.
Creates three copies of the source image, one with the red part of the
image, one with the green part and one with the blue part.
Actually, two version of this routine is available.
'True colour' will give you a red, a green and a blue image.
'8 bit per pixel' will give you three very ugly ill-looking images. These
images have 256 levels of red/green or blue, but these levels are mapped
directly to the bytes written to the screen. The effect of this can be
seen by displaying the image in greytones (see Miscellaneous.Options).
The 'true colour' version can also be applied by using
Process.RGB filter.Red/Green/Blue.
Process.CMYK separation
-----------------------
Works only if you've got 5 (or more) copies of the image (see Options).
See 'RGB seperation'.
Process.HSV separation
----------------------
Works only if you've got 4 (or more) copies of the image.
Creates three images showing the values of Hue, Saturation and Value.
Not really very useful, but someone might find it interesting.
Filters.Noise (weak)
--------------------
Noise removing filter. If the two neighbours of a pixel is in the same
colour, the center pixel becomes that colour too.
Filters.Noise (strong)
----------------------
The center pixel is compared with its neighbours to the left, right, top
and bottom. If the center pixel is the brightest of these, it becomes the
average of the four other pixels.
Filters.Average
---------------
Smoothen the image a lot.....
The center pixels becomes the average of colour of itself and its 8
neighbours. The kernel looks like this:
1 1 1
1 1 1
1 1 1
Filters.Sharpen
--------------
Sharpens the edges in an image.
Uses the following kernel:
0 -1 1
- 1 5 1
0 -1 0
Filters.Smoothen (strong)
-------------------------
Doesn't smoothen the image quite as much a 'Average'.
Uses the following kernel:
1 2 1
2 4 2
1 2 1
Filters.Smoothen (weak)
-----------------------
Hardly doesn't smoothen the image at all.
Uses the following kernel:
1 1 1
1 24 1
1 1 1
Filters.Median
--------------
The center pixel becomes the median of the 8 surrounding pixels.
Filters.Vertical edges
----------------------
Detects vertical edges.
Uses the following kernel:
1 0 -1
2 0 -2
1 0 -1
Filters.Horizontal edges
------------------------
Detects horizontal edges.
The kernel is simply the transposed of the one used for vertical edges.
Filters.Edges
-------------
Detects edges of any orientation.
Kernel: 2 1 0
1 0 -1
0 -1 -2
Filters.Minimum
---------------
The minimum of the 9 pixels (the center pixel and its 8 neighbour) is
found, and this is the new colour of the center pixel.
Filters.Maximum
---------------
As 'Minimum', except it finds the maximum.
Filters.Difference
------------------
My own invention! If the difference between the center pixel and the
average of the 8 others is larger than the selected colour, the average
is used, otherwise the pixel is left unchanged.
Effects.Scratch
---------------
Gives the impression that the surface of the image was scratched with a
nail while the paint was still wet.
Effects.Ripple
--------------
An old-time favourite of all demo-makers.
If the 'Double' option is on, a special ripple will be used...
Effects.Trace edges
-------------------
If the distance between any of the three colour component (for any two
adjectant pixels) are greater than the selected minimum distance, the
pixels are said to lie on an edge and are coloured black (the rest is
coloured white).
Effects.Mosaic
--------------
Select this, then click somewhere in the bottom left corner of the source
image window, and see what happens. Abort by clicking MENU or ADJUST.
Effects.Pointillise
-------------------
Dots, Overlap, Wild : Try them, perhaps you'll like them.
Effects.Twist
-------------
Experiment......
Effects.Extend area
-------------------
Any white or black area (blob) in the image will be extended by adding a
new set of white or black pixels all around its border.
Effects.Add noise
-----------------
A simple yet effective noise generator. Adds noise to either the source
or the destination image.
Higher intensity means more noise, but due to the primitive nature of the
noise-generator the position of the noisy pixels will rapidly begin to
repeat themself.
Effects.Cycle bytes
-------------------
Adds/subtracts 1 from each byte in source image, and writes the byte to
the destination image.
If Repeatedly is selected (ticked) the bytes in the destination image
will be cycled repeatedly until you click MENU.
Works only in 256 colour modes (for speed reasons).
If Multi-tasking is selected, the colour cycling will multitask, and
stops when you click any of the mouse buttons over any window/icon that
belongs to !Process.
Effects.Mask
------------
Only those pixels that are black on the destination image will be copied
from the source image, the rest will be left unchanged.
Effects.Mix colours
-------------------
Mixes the colours randomly.
Effects.Wheel
-------------
Basically, this is just a left-over from the Distort-routine (see More
tools). You select an area (triangular) and a circle, and 9 copies of the
triangle are then distorted to fill the circle.
Effects.Squash.Circle
---------------------
Squashed the image to fit inside a circle.
Effects.Squash.Triangle
-----------------------
See above. Works with all images.
Effects.Whirl.Whirl
-------------------
Hmm, not really that easy to explain, but...
A kind of rotation. The rotation angle depends on the distance from the
center fo the image. The routine is quite slow (10000 pixels/second) due
the the amount of maths that is required.
The rotation angle increses when you get closer to the center of the
image.
Effects.Whirl.Son of Whirl
--------------------------
Like above, just different!
The rotation angle decreases when you get closer to the center of the
image.
Effects.Whirl.Whirl revisited
-----------------------------
Like above and the one above that one, but again it's different from
the other one and from the other other one coz otherwise there wouldn't
really be any meaning in including this effect or the one above it.
Has a small bug that causes black rings to occur if the angle is <30.
Arithmetic
----------
These options perform arithmetic and logical operations on pairs of
pixels from the source and destination images. The result is written to
the destination image as always.
Arithmetic.Source + Dest
------------------------
The destination image becomes the sum of the two images.
Arithmetic.Source - Dest
------------------------
See above.
Arithmetic.Dest - Source
------------------------
See above.
Arithmetic.Source EOR Dest
--------------------------
The two pixels are EORed bit by bit.
Arithmetic.Source AND Dest
--------------------------
The two pixels are ANDed.
Arithmetic.Source OR Dest
-------------------------
The two pixels are ORed.
Arithmetic.Source = Dest
------------------------
The destination pixel becomes white if the source pixel is in the same
colour as the old destination pixel, otherwise it becomes black.
Arithmetic.Source <> Dest
-------------------------
The destination pixel becomes white if the source-pixel is in a different
colour than the old destination pixel.
Arithmetic.Source < Dest
------------------------
See above.
Arithmetic.Source > Dest
------------------------
See above.
Arithmetic.MAX(Source;Dest)
---------------------------
The new pixel is coloured as the maximum of each of the three colour
components.
Arithmetic.MIN(Source;Dest)
---------------------------
As 'MAX(Source;Dest)', except it uses the minimum.
Arithmetic.Overlay
------------------
The destination image is used as a RGB-filter for the source image:
White is transparent, black is non-transparent, red allows red colour to
pass thru the filter etc.
Destination RED = (Source RED * Destination RED)/256
Arithmetic.Combine
------------------
The destination image becomes a weighted average of the two images, the
weight is set in the sub-window to this option.
The weight is a number from 0-255, and is used like this:
Dest RED = ((255-Weight) * Source RED + Weight * Dest RED)/255
Thus weight=0 will copy the source image to the destination image, and
weight=255 will leave the destination image unaltered.
Arithmetic.ABS(Source - Dest)
-----------------------------
See 'Source - Dest'.
More tools.Clear
----------------
An easy way of clearing either the source or destination image.
More tools.Flip about X-axis
----------------------------
Flip the source/destination image about the X-axis.
More tools.Flip about Y-axis
----------------------------
Flip the source/destination image about the Y-axis.
More tools.Rotate
-----------------
The destination image becomes a rotated copy of the source image.
Rotation is anti-clockwise, and if an area is selected only that part of
the image will be rotated.
More tools.Shading.Radial to black
----------------------------------
This generates a radial shading from the selected colour to black. The
area affected is selected using the usual rubberband-circle. The colour
outside the circle becomes black (hence the name 'to black'). Note that
although you select the circle in the source window, the shading will
appear in the destination image. The reason for this is that this tool
is meant to be follow by Arithmetic.Overlay to create a shading of the
whole image.
More tools.Shading.Radial to white
----------------------------------
See above.
More tools.Shading.Radial from black
------------------------------------
See above.
More tools.Shading.Radial from white
------------------------------------
See above.
More tools.Shading.Linear to black
----------------------------------
As the 'More tools.Shading.Radial ....' tools, but performs a linear
shading.
More tools.Shading.Linear to white
----------------------------------
See above.
More tools.Shading.Use dithering
--------------------------------
This toggles whether the shading tools should use dithering to increase
the number of shade or not. The image quality is greatly improved when
dithering is ON, but the dithering makes it much harder to process the
image afterwards.
More tools.Distort triangle
---------------------------
This allows you to specify two triangles and then distort the first one
to fit into the second one. The triangle will be read from the source
image, and is written to the destination image.
More tools.Distort quadrangle
-----------------------------
Allows you to distort (almost) any four sided shape.
More tools.Smudge
-----------------
Basically, this is just RECTANGLE x1,y1,s TO x2,y2, but it looks good
anyway, doesn't it?
Save image
----------
All images can be saved in the usual way. When you save an image from any
of the image viewers, the new spritefile becomes the 'last saved image'
for that particular image viewer, which means that it is this file that
will be loaded by the 'Reload last' option.
The images can only be saved as sprites, with or without a palette with
256 entries. This format is only understood by Translator, ChangeFSI and
a few other programs. !Paint in RISC OS 2 doesn't recognise the palette,
but RISC OS 3 !Paint does.
Zoom
----
The images can be shown in any magnification from 10% to 1999%.
The other menu that hasn't been mentioned yet
=============================================
This menu appears when you click MENU over an image viewer that contains
neither the source image nor the destination image.
Use as source
-------------
Will select the image as the new source image.
Use as destination
------------------
See above.
Copy.Copy from source
---------------------
This entry (and the three entries below) allows you to copy the image to
either the source or the destination image.
Copy.Copy from destination
--------------------------
Copy.Copy to source
-------------------
Copy.Copy to destination
------------------------
Reload last
-----------
See Misc.Reload last
Save image
----------
See above.
Zoom
----
See above.
Known problems, bugs and unfinished things
============================================
The filters doesn't work on the pixels on the edges of the image/selected
area. This isn't a bug, it was just so much easier and faster to do it that
way.......
Redrawing isn't always correct after using the rubberband tools (circle,
lines, rectangles etc.) outside a selected area.
The Distort triangle/Distort quadrilateral routine sometimes produces
really weird results. I haven't yet found out why (or when) but I think it
has got something to do with the corners of the shape being selected
clockwise or anti-clockwise.
The Distort quadrangle doesn't allow shapes where any of the interior
angles are > 180 (deg.). It doesn't generate an error, it just doesn't give
the expected result.
A small bug prevents !Process from displaying some spritefiles if the sprite-
file header isn't entirely correct, eg. word #3 is invalid, although this
doesn't cause problems with !Paint.
The whirl effect-family may fail on very large image or when using very
small angles.
------------------------------------------------------------------------------
Henrik Bjerregaard Pedersen
Stengaards Alle 13 B
DK-2800 Lyngby
Denmark
Phone (+45) 42 88 37 56
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'Not| 000032b0 20 65 6e 6f 75 67 68 20 72 6f 6f 6d 20 69 6e 20 | enough room in | 000032c0 73 70 72 69 74 65 61 72 65 61 27 2e 20 54 68 69 |spritearea'. Thi| 000032d0 73 20 77 69 6c 6c 20 74 79 70 69 63 61 6c 6c 79 |s will typically| 000032e0 20 68 61 70 70 65 6e 20 69 66 20 74 68 65 20 69 | happen if the i| 000032f0 6d 61 67 65 0a 20 20 20 20 20 20 79 6f 75 20 61 |mage. you a| 00003300 72 65 20 74 72 79 69 6e 67 20 74 6f 20 72 65 6c |re trying to rel| 00003310 6f 61 64 20 68 61 73 20 61 20 70 61 6c 65 74 74 |oad has a palett| 00003320 65 2c 20 61 73 20 21 50 72 6f 63 65 73 73 20 73 |e, as !Process s| 00003330 74 6f 72 65 73 20 74 68 65 20 69 6d 61 67 65 73 |tores the images| 00003340 0a 20 20 20 20 20 20 77 69 74 68 6f 75 74 20 70 |. without p| 00003350 61 6c 65 74 74 65 2e 20 54 68 65 72 65 20 73 69 |alette. 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This cannot | 00003460 62 65 20 72 65 76 65 72 73 65 64 2e 0a 0a 20 20 |be reversed... | 00003470 20 20 20 20 49 6d 61 67 65 2e 43 6f 70 79 20 73 | Image.Copy s| 00003480 6f 75 72 63 65 20 69 6d 61 67 65 0a 20 20 20 20 |ource image. | 00003490 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | --------------| 000034a0 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 |---------. | 000034b0 53 65 6c 65 63 74 69 6e 67 20 74 68 69 73 20 6f |Selecting this o| 000034c0 70 74 69 6f 6e 20 77 69 6c 6c 20 63 6f 70 79 20 |ption will copy | 000034d0 74 68 65 20 73 6f 75 72 63 65 20 69 6d 61 67 65 |the source image| 000034e0 20 74 6f 20 74 68 65 20 64 65 73 74 69 6e 61 74 | to the destinat| 000034f0 69 6f 6e 0a 20 20 20 20 20 20 69 6d 61 67 65 2e |ion. image.| 00003500 0a 0a 20 20 20 20 20 20 49 6d 61 67 65 2e 53 65 |.. Image.Se| 00003510 6c 65 63 74 20 61 72 65 61 0a 20 20 20 20 20 20 |lect area. | 00003520 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00003530 2d 0a 20 20 20 20 20 20 54 68 69 73 20 65 6e 74 |-. This ent| 00003540 72 79 20 61 6c 6c 6f 77 73 20 79 6f 75 20 74 6f |ry allows you to| 00003550 20 73 65 6c 65 63 74 20 61 20 70 61 72 74 20 6f | select a part o| 00003560 66 20 74 68 65 20 69 6d 61 67 65 2e 20 41 6c 6d |f the image. Alm| 00003570 6f 73 74 20 61 6c 6c 0a 20 20 20 20 20 20 6f 70 |ost all. op| 00003580 65 72 61 74 69 6f 6e 73 20 6f 6e 20 74 68 65 20 |erations on the | 00003590 69 6d 61 67 65 20 77 69 6c 6c 20 6f 6e 6c 79 20 |image will only | 000035a0 68 61 76 65 20 65 66 66 65 63 74 20 69 6e 20 74 |have effect in t| 000035b0 68 65 20 73 65 6c 65 63 74 65 64 20 61 72 65 61 |he selected area| 000035c0 2e 0a 20 20 20 20 20 20 53 65 6c 65 63 74 20 74 |.. 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Image| 00003950 2e 55 73 65 20 66 75 6c 6c 20 69 6d 61 67 65 0a |.Use full image.| 00003960 20 20 20 20 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | ----------| 00003970 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 |----------. | 00003980 20 49 66 20 74 68 69 73 20 6f 70 74 69 6f 6e 20 | If this option | 00003990 69 73 20 73 65 6c 65 63 74 65 64 20 28 74 69 63 |is selected (tic| 000039a0 6b 65 64 29 2c 20 74 68 65 20 66 75 6c 6c 20 69 |ked), the full i| 000039b0 6d 61 67 65 20 69 73 20 62 65 20 75 73 65 64 2e |mage is be used.| 000039c0 0a 0a 20 20 20 20 20 20 49 6d 61 67 65 2e 55 73 |.. 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This will str| 00003dd0 65 74 63 68 20 61 20 73 65 6c 65 63 74 65 64 0a |etch a selected.| 00003de0 20 20 20 20 20 20 70 61 72 74 20 6f 66 20 74 68 | part of th| 00003df0 65 20 63 6f 6c 6f 75 72 20 68 69 73 74 6f 67 72 |e colour histogr| 00003e00 61 6d 20 73 6f 20 74 68 61 74 20 74 68 69 73 20 |am so that this | 00003e10 70 61 72 74 20 66 69 6c 6c 73 20 74 68 65 20 65 |part fills the e| 00003e20 6e 74 69 72 65 20 72 61 6e 67 65 2e 0a 20 20 20 |ntire range.. | 00003e30 20 20 20 49 66 20 61 20 63 6f 6c 6f 75 72 20 63 | If a colour c| 00003e40 6f 6d 70 6f 6e 65 6e 74 20 69 73 20 6f 75 74 73 |omponent is outs| 00003e50 69 64 65 20 74 68 65 20 73 65 6c 65 63 74 65 64 |ide the selected| 00003e60 20 70 61 72 74 20 69 74 20 62 65 63 6f 6d 65 73 | part it becomes| 00003e70 20 65 69 74 68 65 72 20 30 0a 20 20 20 20 20 20 | either 0. | 00003e80 28 69 66 20 62 65 6c 6f 77 29 20 6f 72 20 32 35 |(if below) or 25| 00003e90 35 20 28 3d 66 75 6c 6c 2c 20 69 66 20 61 62 6f |5 (=full, if abo| 00003ea0 76 65 29 2e 0a 20 20 20 20 20 20 53 65 6c 65 63 |ve).. Selec| 00003eb0 74 69 6e 67 20 61 20 70 61 72 74 20 6f 66 20 74 |ting a part of t| 00003ec0 68 65 20 68 69 73 74 6f 67 72 61 6d 20 69 73 20 |he histogram is | 00003ed0 64 6f 6e 65 20 75 73 69 6e 67 20 74 68 65 20 6c |done using the l| 00003ee0 6f 77 65 72 65 64 20 72 65 63 74 61 6e 67 6c 65 |owered rectangle| 00003ef0 0a 20 20 20 20 20 20 62 65 6c 6f 77 20 74 68 65 |. below the| 00003f00 20 68 69 73 74 6f 67 72 61 6d 2e 20 43 6c 69 63 | histogram. Clic| 00003f10 6b 69 6e 67 20 41 44 4a 55 53 54 20 69 6e 20 74 |king ADJUST in t| 00003f20 68 69 73 20 73 65 74 73 20 74 68 65 20 75 70 70 |his sets the upp| 00003f30 65 72 20 6c 69 6d 69 74 2c 0a 20 20 20 20 20 20 |er limit,. | 00003f40 63 6c 69 63 6b 69 6e 67 20 53 45 4c 45 43 54 20 |clicking SELECT | 00003f50 73 65 74 73 20 74 68 65 20 6c 6f 77 65 72 20 6c |sets the lower l| 00003f60 69 6d 69 74 2e 0a 0a 20 20 20 20 20 20 52 61 6e |imit... Ran| 00003f70 67 65 2e 45 71 75 61 6c 69 7a 65 0a 20 20 20 20 |ge.Equalize. | 00003f80 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | --------------| 00003f90 0a 20 20 20 20 20 20 48 69 73 74 6f 67 72 61 6d |. Histogram| 00003fa0 20 65 71 75 61 6c 69 73 61 74 69 6f 6e 2e 20 54 | equalisation. T| 00003fb0 68 69 73 20 77 69 6c 6c 20 61 74 74 65 6d 70 74 |his will attempt| 00003fc0 20 74 6f 20 65 71 75 61 6c 69 7a 65 20 74 68 65 | to equalize the| 00003fd0 20 68 69 73 74 6f 67 72 61 6d 20 73 6f 0a 20 20 | histogram so. | 00003fe0 20 20 20 20 74 68 61 74 20 74 68 65 72 65 20 69 | that there i| 00003ff0 73 20 61 20 28 72 6f 75 67 68 6c 79 29 20 65 71 |s a (roughly) eq| 00004000 75 61 6c 20 6e 75 6d 62 65 72 20 6f 66 20 70 69 |ual number of pi| 00004010 78 65 6c 73 20 69 6e 20 65 61 63 68 20 6f 66 20 |xels in each of | 00004020 74 68 65 20 70 6f 73 73 69 62 6c 65 0a 20 20 20 |the possible. | 00004030 20 20 20 73 68 61 64 65 73 2e 0a 0a 20 20 20 20 | shades... | 00004040 20 20 52 61 6e 67 65 2e 54 72 61 6e 73 66 65 72 | Range.Transfer| 00004050 20 6d 65 64 69 61 6e 0a 20 20 20 20 20 20 2d 2d | median. --| 00004060 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00004070 2d 2d 2d 0a 20 20 20 20 20 20 43 61 6c 63 75 6c |---. Calcul| 00004080 61 74 65 73 20 74 68 65 20 6d 65 61 6e 20 63 6f |ates the mean co| 00004090 6c 6f 75 72 20 6f 66 20 74 68 65 20 69 6d 61 67 |lour of the imag| 000040a0 65 2c 20 61 6e 64 20 74 72 61 6e 73 66 65 72 73 |e, and transfers| 000040b0 20 69 74 20 74 6f 20 74 68 65 20 52 47 42 0a 20 | it to the RGB. | 000040c0 20 20 20 20 20 63 6f 6c 6f 75 72 20 73 65 6c 65 | colour sele| 000040d0 63 74 6f 72 2e 20 54 68 69 73 20 69 73 20 65 73 |ctor. This is es| 000040e0 70 65 63 69 61 6c 6c 79 20 75 73 65 66 75 6c 20 |pecially useful | 000040f0 69 66 20 79 6f 75 20 77 61 6e 74 20 74 6f 20 63 |if you want to c| 00004100 6f 6e 76 65 72 74 20 61 0a 20 20 20 20 20 20 63 |onvert a. c| 00004110 6f 6c 6f 75 72 20 69 6d 61 67 65 20 74 6f 20 67 |olour image to g| 00004120 72 65 79 74 6f 6e 65 73 2c 20 61 73 20 74 68 65 |reytones, as the| 00004130 20 6d 65 61 6e 20 63 6f 6c 6f 75 72 20 77 69 6c | mean colour wil| 00004140 6c 20 65 6e 73 75 72 65 20 61 20 72 65 61 73 6f |l ensure a reaso| 00004150 6e 61 62 6c 79 0a 20 20 20 20 20 20 67 6f 6f 64 |nably. good| 00004160 20 63 6f 6e 76 65 72 73 69 6f 6e 2e 0a 0a 20 20 | conversion... | 00004170 20 20 20 20 52 61 6e 67 65 2e 43 6f 6c 6f 75 72 | Range.Colour| 00004180 20 63 6f 72 72 65 63 74 69 6f 6e 0a 20 20 20 20 | correction. | 00004190 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | --------------| 000041a0 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 |---------. | 000041b0 55 73 65 73 20 6f 6e 65 20 6f 66 20 74 68 72 65 |Uses one of thre| 000041c0 65 20 61 6c 67 6f 72 69 74 68 65 6d 73 20 74 6f |e algorithems to| 000041d0 20 70 65 72 66 6f 72 6d 20 63 6f 6c 6f 75 72 2d | perform colour-| 000041e0 63 6f 72 72 65 63 74 69 6f 6e 2e 20 54 68 65 20 |correction. The | 000041f0 63 75 72 76 65 0a 20 20 20 20 20 20 73 68 6f 77 |curve. show| 00004200 73 20 27 4e 65 77 20 63 6f 6c 6f 75 72 27 20 76 |s 'New colour' v| 00004210 73 20 27 4f 6c 64 20 63 6f 6c 6f 75 72 27 2e 0a |s 'Old colour'..| 00004220 0a 20 20 20 20 20 20 47 61 6d 6d 61 20 28 47 61 |. Gamma (Ga| 00004230 6d 6d 61 2d 63 6f 72 72 65 63 74 69 6f 6e 29 3a |mma-correction):| 00004240 20 45 61 63 68 20 63 6f 6c 6f 75 72 2d 63 6f 6d | Each colour-com| 00004250 70 6f 6e 65 6e 74 20 69 73 20 74 72 61 6e 73 6c |ponent is transl| 00004260 61 74 65 64 20 74 6f 20 61 20 6e 65 77 0a 20 20 |ated to a new. | 00004270 20 20 20 20 63 6f 6c 6f 75 72 20 75 73 69 6e 67 | colour using| 00004280 20 74 68 65 20 66 6f 72 6d 75 6c 61 3a 20 20 20 | the formula: | 00004290 4e 65 77 43 6f 6c 20 3d 20 28 4f 6c 64 43 6f 6c |NewCol = (OldCol| 000042a0 20 5e 20 47 61 6d 6d 61 29 0a 20 20 20 20 20 20 | ^ Gamma). | 000042b0 47 61 6d 6d 61 20 69 73 20 73 65 74 20 75 73 69 |Gamma is set usi| 000042c0 6e 67 20 74 68 65 20 74 77 6f 20 75 70 2d 20 61 |ng the two up- a| 000042d0 6e 64 20 64 6f 77 6e 2d 69 63 6f 6e 73 2e 0a 20 |nd down-icons.. | 000042e0 20 20 20 20 20 47 61 6d 6d 61 2d 63 6f 72 72 65 | Gamma-corre| 000042f0 63 74 69 6f 6e 20 69 73 20 70 61 72 74 69 63 75 |ction is particu| 00004300 61 6c 6c 79 20 75 73 65 66 75 6c 20 6f 6e 20 73 |ally useful on s| 00004310 63 61 6e 6e 65 64 2f 64 69 67 69 74 69 7a 65 64 |canned/digitized| 00004320 20 69 6d 61 67 65 73 2e 0a 0a 20 20 20 20 20 20 | images... | 00004330 50 2d 6c 69 6e 3a 20 42 61 73 69 63 61 6c 6c 79 |P-lin: Basically| 00004340 20 74 68 65 20 73 61 6d 65 20 61 73 20 47 61 6d | the same as Gam| 00004350 6d 61 2d 63 6f 72 72 2e 20 59 6f 75 20 63 61 6e |ma-corr. You can| 00004360 20 61 64 6a 75 73 74 20 74 68 65 20 63 75 72 76 | adjust the curv| 00004370 65 20 62 79 0a 20 20 20 20 20 20 63 6c 69 63 6b |e by. click| 00004380 69 6e 67 20 53 45 4c 45 43 54 20 6f 6e 20 69 74 |ing SELECT on it| 00004390 2e 0a 0a 20 20 20 20 20 20 53 74 65 70 3a 20 41 |... Step: A| 000043a0 6c 6c 6f 77 73 20 79 6f 75 20 74 6f 20 63 6f 6e |llows you to con| 000043b0 74 72 6f 6c 20 74 68 65 20 74 72 61 6e 73 6c 61 |trol the transla| 000043c0 74 69 6f 6e 20 6f 66 20 65 61 63 68 20 52 47 42 |tion of each RGB| 000043d0 20 76 61 6c 75 65 20 74 6f 20 61 20 6e 65 77 0a | value to a new.| 000043e0 20 20 20 20 20 20 52 47 42 2d 76 61 6c 75 65 2e | RGB-value.| 000043f0 0a 0a 0a 20 20 20 20 20 20 50 72 6f 63 65 73 73 |... Process| 00004400 2e 49 6e 76 65 72 74 0a 20 20 20 20 20 20 2d 2d |.Invert. --| 00004410 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 |------------. | 00004420 20 20 20 54 68 69 73 20 77 69 6c 6c 20 69 6e 76 | This will inv| 00004430 65 72 74 20 74 68 65 20 69 6d 61 67 65 2c 20 67 |ert the image, g| 00004440 69 76 69 6e 67 20 61 20 6e 65 67 61 74 69 76 65 |iving a negative| 00004450 20 69 6d 61 67 65 2e 0a 0a 20 20 20 20 20 20 50 | image... P| 00004460 72 6f 63 65 73 73 2e 52 65 6d 6f 76 65 20 54 49 |rocess.Remove TI| 00004470 4e 54 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d 2d 2d |NT. -------| 00004480 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 |------------. | 00004490 20 20 20 54 68 69 73 20 73 69 6d 70 6c 79 20 72 | This simply r| 000044a0 65 6d 6f 76 65 73 20 74 68 65 20 62 6f 74 74 6f |emoves the botto| 000044b0 6d 20 74 77 6f 20 62 69 74 73 20 28 74 68 65 20 |m two bits (the | 000044c0 54 49 4e 54 20 70 61 72 74 29 20 6f 66 20 61 6c |TINT part) of al| 000044d0 6c 20 70 69 78 65 6c 73 20 69 6e 0a 20 20 20 20 |l pixels in. | 000044e0 20 20 74 68 65 20 73 6f 75 72 63 65 20 69 6d 61 | the source ima| 000044f0 67 65 2e 0a 0a 20 20 20 20 20 20 50 72 6f 63 65 |ge... Proce| 00004500 73 73 2e 42 72 69 67 68 74 65 6e 0a 20 20 20 20 |ss.Brighten. | 00004510 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | --------------| 00004520 2d 2d 0a 20 20 20 20 20 20 54 68 69 73 20 61 64 |--. This ad| 00004530 64 73 20 61 20 73 6d 61 6c 6c 20 61 6d 6f 75 6e |ds a small amoun| 00004540 74 20 74 6f 20 65 61 63 68 20 6f 66 20 74 68 65 |t to each of the| 00004550 20 63 6f 6c 6f 75 72 20 63 6f 6d 70 6f 6e 65 6e | colour componen| 00004560 74 73 2c 20 67 69 76 69 6e 67 20 61 0a 20 20 20 |ts, giving a. | 00004570 20 20 20 62 72 69 67 68 74 65 72 20 69 6d 61 67 | brighter imag| 00004580 65 2e 0a 0a 20 20 20 20 20 20 50 72 6f 63 65 73 |e... Proces| 00004590 73 2e 44 61 72 6b 65 6e 0a 20 20 20 20 20 20 2d |s.Darken. -| 000045a0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 |-------------. | 000045b0 20 20 20 20 54 68 65 20 72 65 76 65 72 73 65 20 | The reverse | 000045c0 6f 66 20 42 72 69 67 68 74 65 6e 2e 0a 0a 20 20 |of Brighten... | 000045d0 20 20 20 20 50 72 6f 63 65 73 73 2e 42 6c 61 63 | Process.Blac| 000045e0 6b 20 26 20 57 68 69 74 65 0a 20 20 20 20 20 20 |k & White. | 000045f0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00004600 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 43 6f 6e 76 |-----. Conv| 00004610 65 72 74 73 20 74 68 65 20 69 6d 61 67 65 20 74 |erts the image t| 00004620 6f 20 62 6c 61 63 6b 20 61 6e 64 20 77 68 69 74 |o black and whit| 00004630 65 2e 20 54 68 65 20 63 6f 6c 6f 75 72 20 63 6f |e. The colour co| 00004640 6d 70 6f 6e 65 6e 74 73 20 61 72 65 20 77 65 69 |mponents are wei| 00004650 67 68 74 65 64 0a 20 20 20 20 20 20 61 63 63 6f |ghted. acco| 00004660 72 64 69 6e 67 20 74 6f 20 74 68 65 20 73 65 6c |rding to the sel| 00004670 65 63 74 65 64 20 63 6f 6c 6f 75 72 2c 20 74 68 |ected colour, th| 00004680 65 20 6d 65 64 69 61 6e 20 6f 66 20 74 68 65 20 |e median of the | 00004690 74 68 72 65 65 20 63 6f 6d 70 6f 6e 65 6e 74 73 |three components| 000046a0 20 61 72 65 0a 20 20 20 20 20 20 63 61 6c 63 75 | are. calcu| 000046b0 6c 61 74 65 64 2c 20 61 6e 64 20 69 66 20 74 68 |lated, and if th| 000046c0 69 73 20 69 73 20 61 62 6f 76 65 20 35 30 25 20 |is is above 50% | 000046d0 69 6e 74 65 6e 73 69 74 79 2c 20 74 68 65 20 70 |intensity, the p| 000046e0 69 78 65 6c 20 62 65 63 6f 6d 65 73 20 77 68 69 |ixel becomes whi| 000046f0 74 65 0a 20 20 20 20 20 20 6f 74 68 65 72 77 69 |te. otherwi| 00004700 73 65 20 69 74 20 62 65 63 6f 6d 65 73 20 62 6c |se it becomes bl| 00004710 61 63 6b 2e 0a 0a 20 20 20 20 20 20 50 72 6f 63 |ack... Proc| 00004720 65 73 73 2e 47 72 65 79 74 6f 6e 65 73 0a 20 20 |ess.Greytones. | 00004730 20 20 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | ------------| 00004740 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 43 6f 6e 76 |-----. Conv| 00004750 65 72 74 73 20 74 68 65 20 69 6d 61 67 65 20 74 |erts the image t| 00004760 6f 20 67 72 65 79 74 6f 6e 65 73 2e 20 54 68 65 |o greytones. The| 00004770 20 63 6f 6c 6f 75 72 20 63 6f 6d 70 6f 6e 65 6e | colour componen| 00004780 74 73 20 61 72 65 20 77 65 69 67 68 74 65 64 0a |ts are weighted.| 00004790 20 20 20 20 20 20 61 63 63 6f 72 64 69 6e 67 20 | according | 000047a0 74 6f 20 74 68 65 20 73 65 6c 65 63 74 65 64 20 |to the selected | 000047b0 63 6f 6c 6f 75 72 2c 20 74 68 65 20 6d 65 64 69 |colour, the medi| 000047c0 61 6e 20 6f 66 20 74 68 65 20 74 68 72 65 65 20 |an of the three | 000047d0 63 6f 6d 70 6f 6e 65 6e 74 73 20 61 72 65 0a 20 |components are. | 000047e0 20 20 20 20 20 63 61 6c 63 75 6c 61 74 65 64 20 | calculated | 000047f0 61 6e 64 20 74 68 69 73 20 69 73 20 75 73 65 64 |and this is used| 00004800 20 74 6f 20 73 65 6c 65 63 74 20 61 20 67 72 65 | to select a gre| 00004810 79 74 6f 6e 65 2e 0a 20 20 20 20 20 20 54 68 65 |ytone.. The| 00004820 20 73 65 6e 73 69 74 69 76 69 74 79 20 6f 66 20 | sensitivity of | 00004830 74 68 65 20 65 79 65 20 69 73 20 61 70 70 72 6f |the eye is appro| 00004840 78 2e 20 33 3a 35 3a 31 20 28 72 65 64 2c 67 72 |x. 3:5:1 (red,gr| 00004850 65 65 6e 2c 62 6c 75 65 29 2e 0a 0a 20 20 20 20 |een,blue)... | 00004860 20 20 50 72 6f 63 65 73 73 2e 54 68 72 65 73 68 | Process.Thresh| 00004870 6f 6c 64 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d 2d |old. ------| 00004880 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 |-----------. | 00004890 20 20 43 6f 6e 76 65 72 74 73 20 74 68 65 20 69 | Converts the i| 000048a0 6d 61 67 65 20 74 6f 20 62 6c 61 63 6b 20 61 6e |mage to black an| 000048b0 64 20 77 68 69 74 65 20 75 73 69 6e 67 20 74 68 |d white using th| 000048c0 72 65 73 68 6f 6c 64 69 6e 67 2e 0a 20 20 20 20 |resholding.. | 000048d0 20 20 54 68 72 65 73 68 6f 6c 64 69 6e 67 20 6d | Thresholding m| 000048e0 65 61 6e 73 20 74 68 61 74 20 61 6e 79 20 70 69 |eans that any pi| 000048f0 78 65 6c 20 77 69 74 68 20 32 20 6f 72 20 33 20 |xel with 2 or 3 | 00004900 63 6f 6c 6f 75 72 20 63 6f 6d 70 6f 6e 65 6e 74 |colour component| 00004910 73 20 61 62 6f 76 65 20 74 68 65 0a 20 20 20 20 |s above the. | 00004920 20 20 73 65 6c 65 63 74 65 64 20 63 6f 6c 6f 75 | selected colou| 00004930 72 20 77 69 6c 6c 20 62 65 63 6f 6d 65 20 77 68 |r will become wh| 00004940 69 74 65 2c 20 74 68 65 20 72 65 73 74 20 77 69 |ite, the rest wi| 00004950 6c 6c 20 62 65 63 6f 6d 65 20 62 6c 61 63 6b 2e |ll become black.| 00004960 0a 0a 20 20 20 20 20 20 50 72 6f 63 65 73 73 2e |.. Process.| 00004970 41 64 64 20 63 6f 6c 6f 75 72 0a 20 20 20 20 20 |Add colour. | 00004980 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | ---------------| 00004990 2d 2d 2d 0a 20 20 20 20 20 20 41 64 64 73 20 61 |---. Adds a| 000049a0 6e 20 76 61 72 69 61 62 6c 65 20 61 6d 6f 75 6e |n variable amoun| 000049b0 74 20 6f 66 20 63 6f 6c 6f 75 72 20 74 6f 20 74 |t of colour to t| 000049c0 68 65 20 72 65 64 2c 20 67 72 65 65 6e 20 61 6e |he red, green an| 000049d0 64 20 62 6c 75 65 20 63 6f 6c 6f 75 72 0a 20 20 |d blue colour. | 000049e0 20 20 20 20 63 6f 6d 70 6f 6e 65 6e 74 73 2e 0a | components..| 000049f0 0a 20 20 20 20 20 20 50 72 6f 63 65 73 73 2e 53 |. Process.S| 00004a00 75 62 20 63 6f 6c 6f 75 72 0a 20 20 20 20 20 20 |ub colour. | 00004a10 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00004a20 2d 2d 0a 20 20 20 20 20 20 54 68 65 20 72 65 76 |--. The rev| 00004a30 65 72 73 65 20 6f 66 20 41 64 64 20 63 6f 6c 6f |erse of Add colo| 00004a40 75 72 2e 0a 0a 20 20 20 20 20 20 50 72 6f 63 65 |ur... Proce| 00004a50 73 73 2e 52 47 42 20 66 69 6c 74 65 72 0a 20 20 |ss.RGB filter. | 00004a60 20 20 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | ------------| 00004a70 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 54 68 69 |------. Thi| 00004a80 73 20 61 63 74 73 20 6c 69 6b 65 20 61 20 73 6f |s acts like a so| 00004a90 72 74 20 6f 66 20 63 6f 6c 6f 75 72 65 64 20 67 |rt of coloured g| 00004aa0 6c 61 73 73 20 79 6f 75 20 70 75 74 20 69 6e 20 |lass you put in | 00004ab0 66 72 6f 6e 74 20 6f 66 20 74 68 65 20 69 6d 61 |front of the ima| 00004ac0 67 65 2e 0a 20 20 20 20 20 20 49 66 20 74 68 65 |ge.. If the| 00004ad0 20 67 6c 61 73 73 20 69 73 20 62 6c 75 65 2c 20 | glass is blue, | 00004ae0 6f 6e 6c 79 20 74 68 65 20 62 6c 75 65 20 70 61 |only the blue pa| 00004af0 72 74 73 20 6f 66 20 74 68 65 20 69 6d 61 67 65 |rts of the image| 00004b00 20 77 69 6c 6c 20 70 61 73 73 20 74 68 72 75 0a | will pass thru.| 00004b10 20 20 20 20 20 20 74 68 65 20 67 6c 61 73 73 2e | the glass.| 00004b20 0a 0a 20 20 20 20 20 20 50 72 6f 63 65 73 73 2e |.. Process.| 00004b30 54 72 61 6e 73 6c 61 74 65 0a 20 20 20 20 20 20 |Translate. | 00004b40 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00004b50 2d 0a 20 20 20 20 20 20 54 68 65 20 63 6f 6c 6f |-. The colo| 00004b60 75 72 73 20 69 6e 20 74 68 65 20 64 65 73 74 69 |urs in the desti| 00004b70 6e 61 74 69 6f 6e 20 69 6d 61 67 65 20 62 65 63 |nation image bec| 00004b80 6f 6d 65 73 20 61 20 77 65 69 67 68 74 65 64 20 |omes a weighted | 00004b90 73 75 6d 20 6f 66 20 74 68 65 0a 20 20 20 20 20 |sum of the. | 00004ba0 20 63 6f 6c 6f 75 72 20 63 6f 6d 70 6f 6e 65 6e | colour componen| 00004bb0 74 73 20 66 72 6f 6d 20 74 68 65 20 73 6f 75 72 |ts from the sour| 00004bc0 63 65 20 69 6d 61 67 65 2c 20 65 67 3a 0a 20 20 |ce image, eg:. | 00004bd0 20 20 20 20 20 20 20 4e 65 77 20 52 45 44 20 3d | New RED =| 00004be0 20 33 30 25 20 4f 6c 64 20 52 45 44 20 2b 20 36 | 30% Old RED + 6| 00004bf0 30 20 25 20 4f 6c 64 20 47 52 45 45 4e 20 2b 20 |0 % Old GREEN + | 00004c00 34 30 25 20 4f 6c 64 20 42 4c 55 45 20 20 28 65 |40% Old BLUE (e| 00004c10 74 63 2e 29 0a 20 20 20 20 20 20 41 6e 79 74 68 |tc.). Anyth| 00004c20 69 6e 67 20 61 62 6f 76 65 20 31 30 30 25 20 69 |ing above 100% i| 00004c30 73 20 63 75 74 20 6f 66 66 2e 0a 0a 20 20 20 20 |s cut off... | 00004c40 20 20 50 72 6f 63 65 73 73 2e 53 68 61 64 65 0a | Process.Shade.| 00004c50 20 20 20 20 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | ----------| 00004c60 2d 2d 2d 0a 20 20 20 20 20 20 41 6c 6c 20 63 6f |---. All co| 00004c70 6c 6f 75 72 73 20 61 72 65 20 6d 6f 76 65 20 74 |lours are move t| 00004c80 6f 77 61 72 64 73 20 74 68 65 20 73 65 6c 65 63 |owards the selec| 00004c90 74 65 64 20 63 6f 6c 6f 75 72 2e 20 48 6f 77 20 |ted colour. How | 00004ca0 6d 75 63 68 20 74 68 65 79 20 61 72 65 0a 20 20 |much they are. | 00004cb0 20 20 20 20 6d 6f 76 65 64 20 69 73 20 73 65 74 | moved is set| 00004cc0 20 75 73 69 6e 67 20 74 68 65 20 45 66 66 65 63 | using the Effec| 00004cd0 74 20 73 6c 69 64 65 62 61 72 20 69 6e 20 74 68 |t slidebar in th| 00004ce0 65 20 63 6f 6c 6f 75 72 20 73 65 6c 65 63 74 6f |e colour selecto| 00004cf0 72 2e 0a 0a 20 20 20 20 20 20 50 72 6f 63 65 73 |r... Proces| 00004d00 73 2e 49 73 6f 6c 61 74 65 0a 20 20 20 20 20 20 |s.Isolate. | 00004d10 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a |---------------.| 00004d20 20 20 20 20 20 20 54 68 69 73 20 77 69 6c 6c 20 | This will | 00004d30 74 75 72 6e 20 61 6c 6c 20 70 69 78 65 6c 20 62 |turn all pixel b| 00004d40 6c 61 63 6b 2c 20 65 78 63 65 70 74 20 66 6f 72 |lack, except for| 00004d50 20 74 68 6f 73 65 20 74 68 61 74 20 61 72 65 20 | those that are | 00004d60 69 6e 20 74 68 65 20 73 61 6d 65 0a 20 20 20 20 |in the same. | 00004d70 20 20 63 6f 6c 6f 75 72 20 61 73 20 74 68 65 20 | colour as the | 00004d80 73 65 6c 65 63 74 65 64 20 63 6f 6c 6f 75 72 20 |selected colour | 00004d90 28 74 68 65 73 65 20 61 72 65 20 74 75 72 6e 65 |(these are turne| 00004da0 64 20 77 68 69 74 65 29 2e 0a 0a 20 20 20 20 20 |d white)... | 00004db0 20 50 72 6f 63 65 73 73 2e 52 47 42 20 73 65 70 | Process.RGB sep| 00004dc0 61 72 61 74 69 6f 6e 2e 54 72 75 65 20 63 6f 6c |aration.True col| 00004dd0 6f 75 72 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d 2d |our. ------| 00004de0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00004df0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 |------------. | 00004e00 20 20 20 50 72 6f 63 65 73 73 2e 52 47 42 20 73 | Process.RGB s| 00004e10 65 70 61 72 61 74 69 6f 6e 2e 38 20 62 69 74 20 |eparation.8 bit | 00004e20 70 65 72 20 70 69 78 65 6c 0a 20 20 20 20 20 20 |per pixel. | 00004e30 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 00004e50 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 57 6f 72 |------. 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Process| 00005150 2e 43 4d 59 4b 20 73 65 70 61 72 61 74 69 6f 6e |.CMYK separation| 00005160 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d |. ---------| 00005170 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 |--------------. | 00005180 20 20 20 20 20 57 6f 72 6b 73 20 6f 6e 6c 79 20 | Works only | 00005190 69 66 20 79 6f 75 27 76 65 20 67 6f 74 20 35 20 |if you've got 5 | 000051a0 28 6f 72 20 6d 6f 72 65 29 20 63 6f 70 69 65 73 |(or more) copies| 000051b0 20 6f 66 20 74 68 65 20 69 6d 61 67 65 20 28 73 | of the image (s| 000051c0 65 65 20 4f 70 74 69 6f 6e 73 29 2e 0a 20 20 20 |ee Options).. | 000051d0 20 20 20 53 65 65 20 27 52 47 42 20 73 65 70 65 | See 'RGB sepe| 000051e0 72 61 74 69 6f 6e 27 2e 0a 0a 20 20 20 20 20 20 |ration'... | 000051f0 50 72 6f 63 65 73 73 2e 48 53 56 20 73 65 70 61 |Process.HSV sepa| 00005200 72 61 74 69 6f 6e 0a 20 20 20 20 20 20 2d 2d 2d |ration. ---| 00005210 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00005220 2d 2d 2d 0a 20 20 20 20 20 20 57 6f 72 6b 73 20 |---. 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Filters.| 000053c0 4e 6f 69 73 65 20 28 73 74 72 6f 6e 67 29 0a 20 |Noise (strong). | 000053d0 20 20 20 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | -----------| 000053e0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 |-----------. | 000053f0 20 20 54 68 65 20 63 65 6e 74 65 72 20 70 69 78 | The center pix| 00005400 65 6c 20 69 73 20 63 6f 6d 70 61 72 65 64 20 77 |el is compared w| 00005410 69 74 68 20 69 74 73 20 6e 65 69 67 68 62 6f 75 |ith its neighbou| 00005420 72 73 20 74 6f 20 74 68 65 20 6c 65 66 74 2c 20 |rs to the left, | 00005430 72 69 67 68 74 2c 20 74 6f 70 0a 20 20 20 20 20 |right, top. | 00005440 20 61 6e 64 20 62 6f 74 74 6f 6d 2e 20 49 66 20 | and bottom. 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The ce| 00005510 6e 74 65 72 20 70 69 78 65 6c 73 20 62 65 63 6f |nter pixels beco| 00005520 6d 65 73 20 74 68 65 20 61 76 65 72 61 67 65 20 |mes the average | 00005530 6f 66 20 63 6f 6c 6f 75 72 20 6f 66 20 69 74 73 |of colour of its| 00005540 65 6c 66 20 61 6e 64 20 69 74 73 20 38 0a 20 20 |elf and its 8. | 00005550 20 20 20 20 6e 65 69 67 68 62 6f 75 72 73 2e 20 | neighbours. | 00005560 54 68 65 20 6b 65 72 6e 65 6c 20 6c 6f 6f 6b 73 |The kernel looks| 00005570 20 6c 69 6b 65 20 74 68 69 73 3a 0a 20 20 20 20 | like this:. | 00005580 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 000055a0 20 20 20 20 20 20 20 20 20 20 20 20 31 20 20 20 | 1 | 000055b0 31 20 20 20 31 0a 20 20 20 20 20 20 20 20 20 20 |1 1. | 000055c0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 000055e0 20 20 20 20 20 20 31 20 20 20 31 20 20 20 31 0a | 1 1 1.| 000055f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00005620 31 20 20 20 31 20 20 20 31 0a 0a 20 20 20 20 20 |1 1 1.. | 00005630 20 46 69 6c 74 65 72 73 2e 53 68 61 72 70 65 6e | Filters.Sharpen| 00005640 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d |. ---------| 00005650 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 53 68 61 72 |-----. 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Us| 000057d0 65 73 20 74 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 |es the following| 000057e0 20 6b 65 72 6e 65 6c 3a 0a 20 20 20 20 20 20 20 | kernel:. | 000057f0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00005810 20 20 20 20 20 20 20 20 20 31 20 20 20 32 20 20 | 1 2 | 00005820 20 31 0a 20 20 20 20 20 20 20 20 20 20 20 20 20 | 1. | 00005830 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00005850 20 20 20 32 20 20 20 34 20 20 20 32 0a 20 20 20 | 2 4 2. | 00005860 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00005880 20 20 20 20 20 20 20 20 20 20 20 20 20 31 20 20 | 1 | 00005890 20 32 20 20 20 31 0a 0a 20 20 20 20 20 20 46 69 | 2 1.. Fi| 000058a0 6c 74 65 72 73 2e 53 6d 6f 6f 74 68 65 6e 20 28 |lters.Smoothen (| 000058b0 77 65 61 6b 29 0a 20 20 20 20 20 20 2d 2d 2d 2d |weak). ----| 000058c0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 000058d0 2d 2d 2d 0a 20 20 20 20 20 20 48 61 72 64 6c 79 |---. Hardly| 000058e0 20 64 6f 65 73 6e 27 74 20 73 6d 6f 6f 74 68 65 | doesn't smoothe| 000058f0 6e 20 74 68 65 20 69 6d 61 67 65 20 61 74 20 61 |n the image at a| 00005900 6c 6c 2e 0a 20 20 20 20 20 20 55 73 65 73 20 74 |ll.. Uses t| 00005910 68 65 20 66 6f 6c 6c 6f 77 69 6e 67 20 6b 65 72 |he following ker| 00005920 6e 65 6c 3a 0a 20 20 20 20 20 20 20 20 20 20 20 |nel:. | 00005930 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00005950 20 20 20 20 20 31 20 20 20 31 20 20 20 31 0a 20 | 1 1 1. | 00005960 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 00005980 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 31 | 1| 00005990 20 20 20 32 34 20 20 31 0a 20 20 20 20 20 20 20 | 24 1. | 000059a0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | | * 000059c0 20 20 20 20 20 20 20 20 20 31 20 20 20 31 20 20 | 1 1 | 000059d0 20 31 0a 0a 20 20 20 20 20 20 46 69 6c 74 65 72 | 1.. Filter| 000059e0 73 2e 4d 65 64 69 61 6e 0a 20 20 20 20 20 20 2d |s.Median. -| 000059f0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 |-------------. | 00005a00 20 20 20 20 54 68 65 20 63 65 6e 74 65 72 20 70 | The center p| 00005a10 69 78 65 6c 20 62 65 63 6f 6d 65 73 20 74 68 65 |ixel becomes the| 00005a20 20 6d 65 64 69 61 6e 20 6f 66 20 74 68 65 20 38 | median of the 8| 00005a30 20 73 75 72 72 6f 75 6e 64 69 6e 67 20 70 69 78 | surrounding pix| 00005a40 65 6c 73 2e 0a 0a 20 20 20 20 20 20 46 69 6c 74 |els... 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Arithm| 00007070 65 74 69 63 2e 53 6f 75 72 63 65 20 41 4e 44 20 |etic.Source AND | 00007080 44 65 73 74 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d |Dest. -----| 00007090 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 000070a0 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 54 68 65 20 |-----. The | 000070b0 74 77 6f 20 70 69 78 65 6c 73 20 61 72 65 20 41 |two pixels are A| 000070c0 4e 44 65 64 2e 0a 0a 20 20 20 20 20 20 41 72 69 |NDed... Ari| 000070d0 74 68 6d 65 74 69 63 2e 53 6f 75 72 63 65 20 4f |thmetic.Source O| 000070e0 52 20 44 65 73 74 0a 20 20 20 20 20 20 2d 2d 2d |R Dest. ---| 000070f0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00007100 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 54 68 65 |------. The| 00007110 20 74 77 6f 20 70 69 78 65 6c 73 20 61 72 65 20 | two pixels are | 00007120 4f 52 65 64 2e 0a 0a 20 20 20 20 20 20 41 72 69 |ORed... Ari| 00007130 74 68 6d 65 74 69 63 2e 53 6f 75 72 63 65 20 3d |thmetic.Source =| 00007140 20 44 65 73 74 0a 20 20 20 20 20 20 2d 2d 2d 2d | Dest. ----| 00007150 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00007160 2d 2d 2d 2d 0a 20 20 20 20 20 20 54 68 65 20 64 |----. The d| 00007170 65 73 74 69 6e 61 74 69 6f 6e 20 70 69 78 65 6c |estination pixel| 00007180 20 62 65 63 6f 6d 65 73 20 77 68 69 74 65 20 69 | becomes white i| 00007190 66 20 74 68 65 20 73 6f 75 72 63 65 20 70 69 78 |f the source pix| 000071a0 65 6c 20 69 73 20 69 6e 20 74 68 65 20 73 61 6d |el is in the sam| 000071b0 65 0a 20 20 20 20 20 20 63 6f 6c 6f 75 72 20 61 |e. colour a| 000071c0 73 20 74 68 65 20 6f 6c 64 20 64 65 73 74 69 6e |s the old destin| 000071d0 61 74 69 6f 6e 20 70 69 78 65 6c 2c 20 6f 74 68 |ation pixel, oth| 000071e0 65 72 77 69 73 65 20 69 74 20 62 65 63 6f 6d 65 |erwise it become| 000071f0 73 20 62 6c 61 63 6b 2e 0a 0a 20 20 20 20 20 20 |s black... | 00007200 41 72 69 74 68 6d 65 74 69 63 2e 53 6f 75 72 63 |Arithmetic.Sourc| 00007210 65 20 3c 3e 20 44 65 73 74 0a 20 20 20 20 20 20 |e <> Dest. | 00007220 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00007230 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 |---------. | 00007240 54 68 65 20 64 65 73 74 69 6e 61 74 69 6f 6e 20 |The destination | 00007250 70 69 78 65 6c 20 62 65 63 6f 6d 65 73 20 77 68 |pixel becomes wh| 00007260 69 74 65 20 69 66 20 74 68 65 20 73 6f 75 72 63 |ite if the sourc| 00007270 65 2d 70 69 78 65 6c 20 69 73 20 69 6e 20 61 20 |e-pixel is in a | 00007280 64 69 66 66 65 72 65 6e 74 0a 20 20 20 20 20 20 |different. | 00007290 63 6f 6c 6f 75 72 20 74 68 61 6e 20 74 68 65 20 |colour than the | 000072a0 6f 6c 64 20 64 65 73 74 69 6e 61 74 69 6f 6e 20 |old destination | 000072b0 70 69 78 65 6c 2e 0a 0a 20 20 20 20 20 20 41 72 |pixel... Ar| 000072c0 69 74 68 6d 65 74 69 63 2e 53 6f 75 72 63 65 20 |ithmetic.Source | 000072d0 3c 20 44 65 73 74 0a 20 20 20 20 20 20 2d 2d 2d |< Dest. ---| 000072e0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 000072f0 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 53 65 65 20 |-----. See | 00007300 61 62 6f 76 65 2e 0a 0a 20 20 20 20 20 20 41 72 |above... Ar| 00007310 69 74 68 6d 65 74 69 63 2e 53 6f 75 72 63 65 20 |ithmetic.Source | 00007320 3e 20 44 65 73 74 0a 20 20 20 20 20 20 2d 2d 2d |> Dest. ---| 00007330 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00007340 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 53 65 65 20 |-----. See | 00007350 61 62 6f 76 65 2e 0a 0a 20 20 20 20 20 20 41 72 |above... Ar| 00007360 69 74 68 6d 65 74 69 63 2e 4d 41 58 28 53 6f 75 |ithmetic.MAX(Sou| 00007370 72 63 65 3b 44 65 73 74 29 0a 20 20 20 20 20 20 |rce;Dest). | 00007380 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00007390 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 |-----------. | 000073a0 20 20 54 68 65 20 6e 65 77 20 70 69 78 65 6c 20 | The new pixel | 000073b0 69 73 20 63 6f 6c 6f 75 72 65 64 20 61 73 20 74 |is coloured as t| 000073c0 68 65 20 6d 61 78 69 6d 75 6d 20 6f 66 20 65 61 |he maximum of ea| 000073d0 63 68 20 6f 66 20 74 68 65 20 74 68 72 65 65 20 |ch of the three | 000073e0 63 6f 6c 6f 75 72 0a 20 20 20 20 20 20 63 6f 6d |colour. com| 000073f0 70 6f 6e 65 6e 74 73 2e 0a 0a 20 20 20 20 20 20 |ponents... | 00007400 41 72 69 74 68 6d 65 74 69 63 2e 4d 49 4e 28 53 |Arithmetic.MIN(S| 00007410 6f 75 72 63 65 3b 44 65 73 74 29 0a 20 20 20 20 |ource;Dest). | 00007420 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | --------------| 00007430 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 |-------------. | 00007440 20 20 20 20 41 73 20 27 4d 41 58 28 53 6f 75 72 | As 'MAX(Sour| 00007450 63 65 3b 44 65 73 74 29 27 2c 20 65 78 63 65 70 |ce;Dest)', excep| 00007460 74 20 69 74 20 75 73 65 73 20 74 68 65 20 6d 69 |t it uses the mi| 00007470 6e 69 6d 75 6d 2e 0a 0a 20 20 20 20 20 20 41 72 |nimum... Ar| 00007480 69 74 68 6d 65 74 69 63 2e 4f 76 65 72 6c 61 79 |ithmetic.Overlay| 00007490 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d 2d 2d 2d 2d |. ---------| 000074a0 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 |---------. | 000074b0 54 68 65 20 64 65 73 74 69 6e 61 74 69 6f 6e 20 |The destination | 000074c0 69 6d 61 67 65 20 69 73 20 75 73 65 64 20 61 73 |image is used as| 000074d0 20 61 20 52 47 42 2d 66 69 6c 74 65 72 20 66 6f | a RGB-filter fo| 000074e0 72 20 74 68 65 20 73 6f 75 72 63 65 20 69 6d 61 |r the source ima| 000074f0 67 65 3a 0a 20 20 20 20 20 20 57 68 69 74 65 20 |ge:. White | 00007500 69 73 20 74 72 61 6e 73 70 61 72 65 6e 74 2c 20 |is transparent, | 00007510 62 6c 61 63 6b 20 69 73 20 6e 6f 6e 2d 74 72 61 |black is non-tra| 00007520 6e 73 70 61 72 65 6e 74 2c 20 72 65 64 20 61 6c |nsparent, red al| 00007530 6c 6f 77 73 20 72 65 64 20 63 6f 6c 6f 75 72 20 |lows red colour | 00007540 74 6f 0a 20 20 20 20 20 20 70 61 73 73 20 74 68 |to. pass th| 00007550 72 75 20 74 68 65 20 66 69 6c 74 65 72 20 65 74 |ru the filter et| 00007560 63 2e 0a 20 20 20 20 20 20 44 65 73 74 69 6e 61 |c.. Destina| 00007570 74 69 6f 6e 20 52 45 44 20 3d 20 28 53 6f 75 72 |tion RED = (Sour| 00007580 63 65 20 52 45 44 20 2a 20 44 65 73 74 69 6e 61 |ce RED * Destina| 00007590 74 69 6f 6e 20 52 45 44 29 2f 32 35 36 0a 0a 20 |tion RED)/256.. | 000075a0 20 20 20 20 20 41 72 69 74 68 6d 65 74 69 63 2e | Arithmetic.| 000075b0 43 6f 6d 62 69 6e 65 0a 20 20 20 20 20 20 2d 2d |Combine. --| 000075c0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 000075d0 0a 20 20 20 20 20 20 54 68 65 20 64 65 73 74 69 |. The desti| 000075e0 6e 61 74 69 6f 6e 20 69 6d 61 67 65 20 62 65 63 |nation image bec| 000075f0 6f 6d 65 73 20 61 20 77 65 69 67 68 74 65 64 20 |omes a weighted | 00007600 61 76 65 72 61 67 65 20 6f 66 20 74 68 65 20 74 |average of the t| 00007610 77 6f 20 69 6d 61 67 65 73 2c 20 74 68 65 0a 20 |wo images, the. | 00007620 20 20 20 20 20 77 65 69 67 68 74 20 69 73 20 73 | weight is s| 00007630 65 74 20 69 6e 20 74 68 65 20 73 75 62 2d 77 69 |et in the sub-wi| 00007640 6e 64 6f 77 20 74 6f 20 74 68 69 73 20 6f 70 74 |ndow to this opt| 00007650 69 6f 6e 2e 0a 20 20 20 20 20 20 54 68 65 20 77 |ion.. The w| 00007660 65 69 67 68 74 20 69 73 20 61 20 6e 75 6d 62 65 |eight is a numbe| 00007670 72 20 66 72 6f 6d 20 30 2d 32 35 35 2c 20 61 6e |r from 0-255, an| 00007680 64 20 69 73 20 75 73 65 64 20 6c 69 6b 65 20 74 |d is used like t| 00007690 68 69 73 3a 0a 20 20 20 20 20 20 44 65 73 74 20 |his:. Dest | 000076a0 52 45 44 20 3d 20 28 28 32 35 35 2d 57 65 69 67 |RED = ((255-Weig| 000076b0 68 74 29 20 2a 20 53 6f 75 72 63 65 20 52 45 44 |ht) * Source RED| 000076c0 20 20 2b 20 20 57 65 69 67 68 74 20 2a 20 44 65 | + Weight * De| 000076d0 73 74 20 52 45 44 29 2f 32 35 35 0a 20 20 20 20 |st RED)/255. | 000076e0 20 20 54 68 75 73 20 77 65 69 67 68 74 3d 30 20 | Thus weight=0 | 000076f0 77 69 6c 6c 20 63 6f 70 79 20 74 68 65 20 73 6f |will copy the so| 00007700 75 72 63 65 20 69 6d 61 67 65 20 74 6f 20 74 68 |urce image to th| 00007710 65 20 64 65 73 74 69 6e 61 74 69 6f 6e 20 69 6d |e destination im| 00007720 61 67 65 2c 20 61 6e 64 0a 20 20 20 20 20 20 77 |age, and. w| 00007730 65 69 67 68 74 3d 32 35 35 20 77 69 6c 6c 20 6c |eight=255 will l| 00007740 65 61 76 65 20 74 68 65 20 64 65 73 74 69 6e 61 |eave the destina| 00007750 74 69 6f 6e 20 69 6d 61 67 65 20 75 6e 61 6c 74 |tion image unalt| 00007760 65 72 65 64 2e 0a 0a 20 20 20 20 20 20 41 72 69 |ered... Ari| 00007770 74 68 6d 65 74 69 63 2e 41 42 53 28 53 6f 75 72 |thmetic.ABS(Sour| 00007780 63 65 20 2d 20 44 65 73 74 29 0a 20 20 20 20 20 |ce - Dest). | 00007790 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | ---------------| 000077a0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 |--------------. | 000077b0 20 20 20 20 20 53 65 65 20 27 53 6f 75 72 63 65 | See 'Source| 000077c0 20 2d 20 44 65 73 74 27 2e 0a 0a 0a 20 20 20 20 | - Dest'.... | 000077d0 20 20 4d 6f 72 65 20 74 6f 6f 6c 73 2e 43 6c 65 | More tools.Cle| 000077e0 61 72 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d 2d 2d |ar. -------| 000077f0 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 |---------. | 00007800 41 6e 20 65 61 73 79 20 77 61 79 20 6f 66 20 63 |An easy way of c| 00007810 6c 65 61 72 69 6e 67 20 65 69 74 68 65 72 20 74 |learing either t| 00007820 68 65 20 73 6f 75 72 63 65 20 6f 72 20 64 65 73 |he source or des| 00007830 74 69 6e 61 74 69 6f 6e 20 69 6d 61 67 65 2e 0a |tination image..| 00007840 0a 20 20 20 20 20 20 4d 6f 72 65 20 74 6f 6f 6c |. More tool| 00007850 73 2e 46 6c 69 70 20 61 62 6f 75 74 20 58 2d 61 |s.Flip about X-a| 00007860 78 69 73 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d 2d |xis. ------| 00007870 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00007880 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 46 6c 69 |------. Fli| 00007890 70 20 74 68 65 20 73 6f 75 72 63 65 2f 64 65 73 |p the source/des| 000078a0 74 69 6e 61 74 69 6f 6e 20 69 6d 61 67 65 20 61 |tination image a| 000078b0 62 6f 75 74 20 74 68 65 20 58 2d 61 78 69 73 2e |bout the X-axis.| 000078c0 0a 0a 20 20 20 20 20 20 4d 6f 72 65 20 74 6f 6f |.. More too| 000078d0 6c 73 2e 46 6c 69 70 20 61 62 6f 75 74 20 59 2d |ls.Flip about Y-| 000078e0 61 78 69 73 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d |axis. -----| 000078f0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00007900 2d 2d 2d 2d 2d 2d 2d 0a 20 20 20 20 20 20 46 6c |-------. Fl| 00007910 69 70 20 74 68 65 20 73 6f 75 72 63 65 2f 64 65 |ip the source/de| 00007920 73 74 69 6e 61 74 69 6f 6e 20 69 6d 61 67 65 20 |stination image | 00007930 61 62 6f 75 74 20 74 68 65 20 59 2d 61 78 69 73 |about the Y-axis| 00007940 2e 0a 0a 20 20 20 20 20 20 4d 6f 72 65 20 74 6f |... More to| 00007950 6f 6c 73 2e 52 6f 74 61 74 65 0a 20 20 20 20 20 |ols.Rotate. | 00007960 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d | ---------------| 00007970 2d 2d 0a 20 20 20 20 20 20 54 68 65 20 64 65 73 |--. The des| 00007980 74 69 6e 61 74 69 6f 6e 20 69 6d 61 67 65 20 62 |tination image b| 00007990 65 63 6f 6d 65 73 20 61 20 72 6f 74 61 74 65 64 |ecomes a rotated| 000079a0 20 63 6f 70 79 20 6f 66 20 74 68 65 20 73 6f 75 | copy of the sou| 000079b0 72 63 65 20 69 6d 61 67 65 2e 0a 20 20 20 20 20 |rce image.. | 000079c0 20 52 6f 74 61 74 69 6f 6e 20 69 73 20 61 6e 74 | Rotation is ant| 000079d0 69 2d 63 6c 6f 63 6b 77 69 73 65 2c 20 61 6e 64 |i-clockwise, and| 000079e0 20 69 66 20 61 6e 20 61 72 65 61 20 69 73 20 73 | if an area is s| 000079f0 65 6c 65 63 74 65 64 20 6f 6e 6c 79 20 74 68 61 |elected only tha| 00007a00 74 20 70 61 72 74 20 6f 66 0a 20 20 20 20 20 20 |t part of. | 00007a10 74 68 65 20 69 6d 61 67 65 20 77 69 6c 6c 20 62 |the image will b| 00007a20 65 20 72 6f 74 61 74 65 64 2e 0a 0a 20 20 20 20 |e rotated... | 00007a30 20 20 4d 6f 72 65 20 74 6f 6f 6c 73 2e 53 68 61 | More tools.Sha| 00007a40 64 69 6e 67 2e 52 61 64 69 61 6c 20 74 6f 20 62 |ding.Radial to b| 00007a50 6c 61 63 6b 0a 20 20 20 20 20 20 2d 2d 2d 2d 2d |lack. -----| 00007a60 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| 00007a70 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 0a 20 20 |-------------. | 00007a80 20 20 20 20 54 68 69 73 20 67 65 6e 65 72 61 74 | This generat| 00007a90 65 73 20 61 20 72 61 64 69 61 6c 20 73 68 61 64 |es a radial shad| 00007aa0 69 6e 67 20 66 72 6f 6d 20 74 68 65 20 73 65 6c |ing from the sel| 00007ab0 65 63 74 65 64 20 63 6f 6c 6f 75 72 20 74 6f 20 |ected colour to | 00007ac0 62 6c 61 63 6b 2e 20 54 68 65 0a 20 20 20 20 20 |black. 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I haven't y| 00008a60 65 74 20 66 6f 75 6e 64 20 6f 75 74 20 77 68 79 |et found out why| 00008a70 20 28 6f 72 20 77 68 65 6e 29 20 62 75 74 20 49 | (or when) but I| 00008a80 20 74 68 69 6e 6b 20 69 74 0a 20 68 61 73 20 67 | think it. has g| 00008a90 6f 74 20 73 6f 6d 65 74 68 69 6e 67 20 74 6f 20 |ot something to | 00008aa0 64 6f 20 77 69 74 68 20 74 68 65 20 63 6f 72 6e |do with the corn| 00008ab0 65 72 73 20 6f 66 20 74 68 65 20 73 68 61 70 65 |ers of the shape| 00008ac0 20 62 65 69 6e 67 20 73 65 6c 65 63 74 65 64 0a | being selected.| 00008ad0 20 63 6c 6f 63 6b 77 69 73 65 20 6f 72 20 61 6e | clockwise or an| 00008ae0 74 69 2d 63 6c 6f 63 6b 77 69 73 65 2e 0a 20 20 |ti-clockwise.. | 00008af0 20 54 68 65 20 44 69 73 74 6f 72 74 20 71 75 61 | The Distort qua| 00008b00 64 72 61 6e 67 6c 65 20 64 6f 65 73 6e 27 74 20 |drangle doesn't | 00008b10 61 6c 6c 6f 77 20 73 68 61 70 65 73 20 77 68 65 |allow shapes whe| 00008b20 72 65 20 61 6e 79 20 6f 66 20 74 68 65 20 69 6e |re any of the in| 00008b30 74 65 72 69 6f 72 0a 20 61 6e 67 6c 65 73 20 61 |terior. angles a| 00008b40 72 65 20 3e 20 31 38 30 20 28 64 65 67 2e 29 2e |re > 180 (deg.).| 00008b50 20 49 74 20 64 6f 65 73 6e 27 74 20 67 65 6e 65 | It doesn't gene| 00008b60 72 61 74 65 20 61 6e 20 65 72 72 6f 72 2c 20 69 |rate an error, i| 00008b70 74 20 6a 75 73 74 20 64 6f 65 73 6e 27 74 20 67 |t just doesn't g| 00008b80 69 76 65 0a 20 74 68 65 20 65 78 70 65 63 74 65 |ive. the expecte| 00008b90 64 20 72 65 73 75 6c 74 2e 0a 20 20 20 41 20 73 |d result.. A s| 00008ba0 6d 61 6c 6c 20 62 75 67 20 70 72 65 76 65 6e 74 |mall bug prevent| 00008bb0 73 20 21 50 72 6f 63 65 73 73 20 66 72 6f 6d 20 |s !Process from | 00008bc0 64 69 73 70 6c 61 79 69 6e 67 20 73 6f 6d 65 20 |displaying some | 00008bd0 73 70 72 69 74 65 66 69 6c 65 73 20 69 66 20 74 |spritefiles if t| 00008be0 68 65 20 73 70 72 69 74 65 2d 0a 20 66 69 6c 65 |he sprite-. file| 00008bf0 20 68 65 61 64 65 72 20 69 73 6e 27 74 20 65 6e | header isn't en| 00008c00 74 69 72 65 6c 79 20 63 6f 72 72 65 63 74 2c 20 |tirely correct, | 00008c10 65 67 2e 20 77 6f 72 64 20 23 33 20 69 73 20 69 |eg. word #3 is i| 00008c20 6e 76 61 6c 69 64 2c 20 61 6c 74 68 6f 75 67 68 |nvalid, although| 00008c30 20 74 68 69 73 0a 20 64 6f 65 73 6e 27 74 20 63 | this. doesn't c| 00008c40 61 75 73 65 20 70 72 6f 62 6c 65 6d 73 20 77 69 |ause problems wi| 00008c50 74 68 20 21 50 61 69 6e 74 2e 0a 20 20 20 54 68 |th !Paint.. Th| 00008c60 65 20 77 68 69 72 6c 20 65 66 66 65 63 74 2d 66 |e whirl effect-f| 00008c70 61 6d 69 6c 79 20 6d 61 79 20 66 61 69 6c 20 6f |amily may fail o| 00008c80 6e 20 76 65 72 79 20 6c 61 72 67 65 20 69 6d 61 |n very large ima| 00008c90 67 65 20 6f 72 20 77 68 65 6e 20 75 73 69 6e 67 |ge or when using| 00008ca0 20 76 65 72 79 0a 20 73 6d 61 6c 6c 20 61 6e 67 | very. small ang| 00008cb0 6c 65 73 2e 0a 0a 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |les...----------| 00008cc0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------| * 00008d00 2d 2d 2d 2d 0a 0a 20 20 20 48 65 6e 72 69 6b 20 |----.. Henrik | 00008d10 42 6a 65 72 72 65 67 61 61 72 64 20 50 65 64 65 |Bjerregaard Pede| 00008d20 72 73 65 6e 0a 20 20 20 53 74 65 6e 67 61 61 72 |rsen. Stengaar| 00008d30 64 73 20 41 6c 6c 65 20 31 33 20 42 0a 20 20 20 |ds Alle 13 B. | 00008d40 44 4b 2d 32 38 30 30 20 4c 79 6e 67 62 79 0a 20 |DK-2800 Lyngby. | 00008d50 20 20 44 65 6e 6d 61 72 6b 0a 0a 20 20 20 50 68 | Denmark.. Ph| 00008d60 6f 6e 65 20 28 2b 34 35 29 20 34 32 20 38 38 20 |one (+45) 42 88 | 00008d70 33 37 20 35 36 0a |37 56.| 00008d76
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