shipw4/RENDER

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shipw4/RENDER

This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.

Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.

Tape/disk:	Home » Personal collection » Acorn hard disk » misc » misc2
Filename:	shipw4/RENDER
Read OK:	✔
File size:	0527 bytes
Load address:	0000
Exec address:	0000

Duplicates

There is 1 duplicate copy of this file in the archive:

Personal collection » Acorn ADFS disks » Archimedes » Unlabelled_disk_3.ADF » RENDER
Personal collection » Acorn hard disk » misc » misc2 » shipw4/RENDER

File contents

   10REM Render
   20ON ERROR REPORT:PRINT" @ ";ERL:END
   30:
   40READn,s:DIMp%(n,2),t%(s,2)
   50FORr=1TOn:READp%(r,0),p%(r,1),p%(r,2):NEXT
   60FORr=1TOs:READt%(r,0),t%(r,1),t%(r,2):NEXT
   70MODE15:PROCrender:PRINT"End."
   80REPEAT UNTIL FALSE
   90:
  100DEFPROCrender
  110FORz=255TO0STEP-1
  120FORpoly=1TOs
  130IF p%(t%(poly,0),2)<z AND p%(t%(poly,2),2)>z THEN PROCplot
  140NEXT:NEXT
  150ENDPROC
  160:
  170DEFPROCplot
  180xmin=p%(t%(poly,0),0)+(z-p%(t%(poly,0),2))*(p%(t%(poly,2),0)-p%(t%(poly,0),0))/(p%(t%(poly,2),2)-p%(t%(poly,0),2))
  190IF z<p%(t%(poly,1),2) THEN xmax=p%(t%(poly,1),0)+(z-p%(t%(poly,1),2))*(p%(t%(poly,2),0)-p%(t%(poly,1),0))/(p%(t%(poly,2),2)-p%(t%(poly,1),2))
  200IF NOT z<p%(t%(poly,1),2) THEN xmax=p%(t%(poly,0),0)+(z-p%(t%(poly,0),2))*(p%(t%(poly,1),0)-p%(t%(poly,0),0))/(p%(t%(poly,1),2)-p%(t%(poly,0),2))
  210ymin=p%(t%(poly,0),1)+(z-p%(t%(poly,0),2))*(p%(t%(poly,2),1)-p%(t%(poly,0),1))/(p%(t%(poly,2),2)-p%(t%(poly,0),2))
  220IF z<p%(t%(poly,1),2) THEN ymax=p%(t%(poly,1),1)+(z-p%(t%(poly,1),2))*(p%(t%(poly,2),1)-p%(t%(poly,1),1))/(p%(t%(poly,2),2)-p%(t%(poly,1),2))
  230IF NOT z<p%(t%(poly,1),2) THEN ymax=p%(t%(poly,0),1)+(z-p%(t%(poly,0),2))*(p%(t%(poly,1),1)-p%(t%(poly,0),1))/(p%(t%(poly,1),2)-p%(t%(poly,0),2))
  240:
  250FORx=xmin TO xmax STEP SGN(xmax-xmin)
  260y=INT(ymin+(x-xmin)*SGN(xmax-xmin)*(ymax-ymin)/(xmax-xmin))
  270GCOL0,7:POINTx,y
  280NEXT
  290ENDPROC
  300:
  310DATA5,2
  320:
  330DATA640,100,128,100,600,0,100,700,250,800,600,0,800,600,250
  340:
  350DATA2,1,3,4,1,5


� Render
� � �:�" @ ";�:�
:
(�n,s:�p%(n,2),t%(s,2)
2%�r=1�n:�p%(r,0),p%(r,1),p%(r,2):�
<%�r=1�s:�t%(r,0),t%(r,1),t%(r,2):�
F�15:�render:�"End."
P	� � �
Z:
d��render
n�z=255�0�-1
x
�poly=1�s
�5� p%(t%(poly,0),2)<z � p%(t%(poly,2),2)>z � �plot
��:�
��
�:
�
��plot
�vxmin=p%(t%(poly,0),0)+(z-p%(t%(poly,0),2))*(p%(t%(poly,2),0)-p%(t%(poly,0),0))/(p%(t%(poly,2),2)-p%(t%(poly,0),2))
��� z<p%(t%(poly,1),2) � xmax=p%(t%(poly,1),0)+(z-p%(t%(poly,1),2))*(p%(t%(poly,2),0)-p%(t%(poly,1),0))/(p%(t%(poly,2),2)-p%(t%(poly,1),2))
ȏ� � z<p%(t%(poly,1),2) � xmax=p%(t%(poly,0),0)+(z-p%(t%(poly,0),2))*(p%(t%(poly,1),0)-p%(t%(poly,0),0))/(p%(t%(poly,1),2)-p%(t%(poly,0),2))
�vymin=p%(t%(poly,0),1)+(z-p%(t%(poly,0),2))*(p%(t%(poly,2),1)-p%(t%(poly,0),1))/(p%(t%(poly,2),2)-p%(t%(poly,0),2))
܍� z<p%(t%(poly,1),2) � ymax=p%(t%(poly,1),1)+(z-p%(t%(poly,1),2))*(p%(t%(poly,2),1)-p%(t%(poly,1),1))/(p%(t%(poly,2),2)-p%(t%(poly,1),2))
�� � z<p%(t%(poly,1),2) � ymax=p%(t%(poly,0),1)+(z-p%(t%(poly,0),2))*(p%(t%(poly,1),1)-p%(t%(poly,0),1))/(p%(t%(poly,1),2)-p%(t%(poly,0),2))
�:
�!�x=xmin � xmax � �(xmax-xmin)
;y=�(ymin+(x-xmin)*�(xmax-xmin)*(ymax-ymin)/(xmax-xmin))
�0,7:Ȓx,y
�
"�
,:
6�5,2
@:
J<�640,100,128,100,600,0,100,700,250,800,600,0,800,600,250
T:
^�2,1,3,4,1,5
�

00000000  0d 00 0a 0c f4 20 52 65  6e 64 65 72 0d 00 14 14  |..... Render....|
00000010  ee 20 85 20 f6 3a f1 22  20 40 20 22 3b 9e 3a e0  |. . .:." @ ";.:.|
00000020  0d 00 1e 05 3a 0d 00 28  19 f3 6e 2c 73 3a de 70  |....:..(..n,s:.p|
00000030  25 28 6e 2c 32 29 2c 74  25 28 73 2c 32 29 0d 00  |%(n,2),t%(s,2)..|
00000040  32 25 e3 72 3d 31 b8 6e  3a f3 70 25 28 72 2c 30  |2%.r=1.n:.p%(r,0|
00000050  29 2c 70 25 28 72 2c 31  29 2c 70 25 28 72 2c 32  |),p%(r,1),p%(r,2|
00000060  29 3a ed 0d 00 3c 25 e3  72 3d 31 b8 73 3a f3 74  |):...<%.r=1.s:.t|
00000070  25 28 72 2c 30 29 2c 74  25 28 72 2c 31 29 2c 74  |%(r,0),t%(r,1),t|
00000080  25 28 72 2c 32 29 3a ed  0d 00 46 17 eb 31 35 3a  |%(r,2):...F..15:|
00000090  f2 72 65 6e 64 65 72 3a  f1 22 45 6e 64 2e 22 0d  |.render:."End.".|
000000a0  00 50 09 f5 20 fd 20 a3  0d 00 5a 05 3a 0d 00 64  |.P.. . ...Z.:..d|
000000b0  0c dd f2 72 65 6e 64 65  72 0d 00 6e 0f e3 7a 3d  |...render..n..z=|
000000c0  32 35 35 b8 30 88 2d 31  0d 00 78 0d e3 70 6f 6c  |255.0.-1..x..pol|
000000d0  79 3d 31 b8 73 0d 00 82  35 e7 20 70 25 28 74 25  |y=1.s...5. p%(t%|
000000e0  28 70 6f 6c 79 2c 30 29  2c 32 29 3c 7a 20 80 20  |(poly,0),2)<z . |
000000f0  70 25 28 74 25 28 70 6f  6c 79 2c 32 29 2c 32 29  |p%(t%(poly,2),2)|
00000100  3e 7a 20 8c 20 f2 70 6c  6f 74 0d 00 8c 07 ed 3a  |>z . .plot.....:|
00000110  ed 0d 00 96 05 e1 0d 00  a0 05 3a 0d 00 aa 0a dd  |..........:.....|
00000120  f2 70 6c 6f 74 0d 00 b4  76 78 6d 69 6e 3d 70 25  |.plot...vxmin=p%|
00000130  28 74 25 28 70 6f 6c 79  2c 30 29 2c 30 29 2b 28  |(t%(poly,0),0)+(|
00000140  7a 2d 70 25 28 74 25 28  70 6f 6c 79 2c 30 29 2c  |z-p%(t%(poly,0),|
00000150  32 29 29 2a 28 70 25 28  74 25 28 70 6f 6c 79 2c  |2))*(p%(t%(poly,|
00000160  32 29 2c 30 29 2d 70 25  28 74 25 28 70 6f 6c 79  |2),0)-p%(t%(poly|
00000170  2c 30 29 2c 30 29 29 2f  28 70 25 28 74 25 28 70  |,0),0))/(p%(t%(p|
00000180  6f 6c 79 2c 32 29 2c 32  29 2d 70 25 28 74 25 28  |oly,2),2)-p%(t%(|
00000190  70 6f 6c 79 2c 30 29 2c  32 29 29 0d 00 be 8d e7  |poly,0),2)).....|
000001a0  20 7a 3c 70 25 28 74 25  28 70 6f 6c 79 2c 31 29  | z<p%(t%(poly,1)|
000001b0  2c 32 29 20 8c 20 78 6d  61 78 3d 70 25 28 74 25  |,2) . xmax=p%(t%|
000001c0  28 70 6f 6c 79 2c 31 29  2c 30 29 2b 28 7a 2d 70  |(poly,1),0)+(z-p|
000001d0  25 28 74 25 28 70 6f 6c  79 2c 31 29 2c 32 29 29  |%(t%(poly,1),2))|
000001e0  2a 28 70 25 28 74 25 28  70 6f 6c 79 2c 32 29 2c  |*(p%(t%(poly,2),|
000001f0  30 29 2d 70 25 28 74 25  28 70 6f 6c 79 2c 31 29  |0)-p%(t%(poly,1)|
00000200  2c 30 29 29 2f 28 70 25  28 74 25 28 70 6f 6c 79  |,0))/(p%(t%(poly|
00000210  2c 32 29 2c 32 29 2d 70  25 28 74 25 28 70 6f 6c  |,2),2)-p%(t%(pol|
00000220  79 2c 31 29 2c 32 29 29  0d 00 c8 8f e7 20 ac 20  |y,1),2))..... . |
00000230  7a 3c 70 25 28 74 25 28  70 6f 6c 79 2c 31 29 2c  |z<p%(t%(poly,1),|
00000240  32 29 20 8c 20 78 6d 61  78 3d 70 25 28 74 25 28  |2) . xmax=p%(t%(|
00000250  70 6f 6c 79 2c 30 29 2c  30 29 2b 28 7a 2d 70 25  |poly,0),0)+(z-p%|
00000260  28 74 25 28 70 6f 6c 79  2c 30 29 2c 32 29 29 2a  |(t%(poly,0),2))*|
00000270  28 70 25 28 74 25 28 70  6f 6c 79 2c 31 29 2c 30  |(p%(t%(poly,1),0|
00000280  29 2d 70 25 28 74 25 28  70 6f 6c 79 2c 30 29 2c  |)-p%(t%(poly,0),|
00000290  30 29 29 2f 28 70 25 28  74 25 28 70 6f 6c 79 2c  |0))/(p%(t%(poly,|
000002a0  31 29 2c 32 29 2d 70 25  28 74 25 28 70 6f 6c 79  |1),2)-p%(t%(poly|
000002b0  2c 30 29 2c 32 29 29 0d  00 d2 76 79 6d 69 6e 3d  |,0),2))...vymin=|
000002c0  70 25 28 74 25 28 70 6f  6c 79 2c 30 29 2c 31 29  |p%(t%(poly,0),1)|
000002d0  2b 28 7a 2d 70 25 28 74  25 28 70 6f 6c 79 2c 30  |+(z-p%(t%(poly,0|
000002e0  29 2c 32 29 29 2a 28 70  25 28 74 25 28 70 6f 6c  |),2))*(p%(t%(pol|
000002f0  79 2c 32 29 2c 31 29 2d  70 25 28 74 25 28 70 6f  |y,2),1)-p%(t%(po|
00000300  6c 79 2c 30 29 2c 31 29  29 2f 28 70 25 28 74 25  |ly,0),1))/(p%(t%|
00000310  28 70 6f 6c 79 2c 32 29  2c 32 29 2d 70 25 28 74  |(poly,2),2)-p%(t|
00000320  25 28 70 6f 6c 79 2c 30  29 2c 32 29 29 0d 00 dc  |%(poly,0),2))...|
00000330  8d e7 20 7a 3c 70 25 28  74 25 28 70 6f 6c 79 2c  |.. z<p%(t%(poly,|
00000340  31 29 2c 32 29 20 8c 20  79 6d 61 78 3d 70 25 28  |1),2) . ymax=p%(|
00000350  74 25 28 70 6f 6c 79 2c  31 29 2c 31 29 2b 28 7a  |t%(poly,1),1)+(z|
00000360  2d 70 25 28 74 25 28 70  6f 6c 79 2c 31 29 2c 32  |-p%(t%(poly,1),2|
00000370  29 29 2a 28 70 25 28 74  25 28 70 6f 6c 79 2c 32  |))*(p%(t%(poly,2|
00000380  29 2c 31 29 2d 70 25 28  74 25 28 70 6f 6c 79 2c  |),1)-p%(t%(poly,|
00000390  31 29 2c 31 29 29 2f 28  70 25 28 74 25 28 70 6f  |1),1))/(p%(t%(po|
000003a0  6c 79 2c 32 29 2c 32 29  2d 70 25 28 74 25 28 70  |ly,2),2)-p%(t%(p|
000003b0  6f 6c 79 2c 31 29 2c 32  29 29 0d 00 e6 8f e7 20  |oly,1),2))..... |
000003c0  ac 20 7a 3c 70 25 28 74  25 28 70 6f 6c 79 2c 31  |. z<p%(t%(poly,1|
000003d0  29 2c 32 29 20 8c 20 79  6d 61 78 3d 70 25 28 74  |),2) . ymax=p%(t|
000003e0  25 28 70 6f 6c 79 2c 30  29 2c 31 29 2b 28 7a 2d  |%(poly,0),1)+(z-|
000003f0  70 25 28 74 25 28 70 6f  6c 79 2c 30 29 2c 32 29  |p%(t%(poly,0),2)|
00000400  29 2a 28 70 25 28 74 25  28 70 6f 6c 79 2c 31 29  |)*(p%(t%(poly,1)|
00000410  2c 31 29 2d 70 25 28 74  25 28 70 6f 6c 79 2c 30  |,1)-p%(t%(poly,0|
00000420  29 2c 31 29 29 2f 28 70  25 28 74 25 28 70 6f 6c  |),1))/(p%(t%(pol|
00000430  79 2c 31 29 2c 32 29 2d  70 25 28 74 25 28 70 6f  |y,1),2)-p%(t%(po|
00000440  6c 79 2c 30 29 2c 32 29  29 0d 00 f0 05 3a 0d 00  |ly,0),2))....:..|
00000450  fa 21 e3 78 3d 78 6d 69  6e 20 b8 20 78 6d 61 78  |.!.x=xmin . xmax|
00000460  20 88 20 b4 28 78 6d 61  78 2d 78 6d 69 6e 29 0d  | . .(xmax-xmin).|
00000470  01 04 3b 79 3d a8 28 79  6d 69 6e 2b 28 78 2d 78  |..;y=.(ymin+(x-x|
00000480  6d 69 6e 29 2a b4 28 78  6d 61 78 2d 78 6d 69 6e  |min)*.(xmax-xmin|
00000490  29 2a 28 79 6d 61 78 2d  79 6d 69 6e 29 2f 28 78  |)*(ymax-ymin)/(x|
000004a0  6d 61 78 2d 78 6d 69 6e  29 29 0d 01 0e 0e e6 30  |max-xmin)).....0|
000004b0  2c 37 3a c8 92 78 2c 79  0d 01 18 05 ed 0d 01 22  |,7:..x,y......."|
000004c0  05 e1 0d 01 2c 05 3a 0d  01 36 08 dc 35 2c 32 0d  |....,.:..6..5,2.|
000004d0  01 40 05 3a 0d 01 4a 3c  dc 36 34 30 2c 31 30 30  |.@.:..J<.640,100|
000004e0  2c 31 32 38 2c 31 30 30  2c 36 30 30 2c 30 2c 31  |,128,100,600,0,1|
000004f0  30 30 2c 37 30 30 2c 32  35 30 2c 38 30 30 2c 36  |00,700,250,800,6|
00000500  30 30 2c 30 2c 38 30 30  2c 36 30 30 2c 32 35 30  |00,0,800,600,250|
00000510  0d 01 54 05 3a 0d 01 5e  10 dc 32 2c 31 2c 33 2c  |..T.:..^..2,1,3,|
00000520  34 2c 31 2c 35 0d ff                              |4,1,5..|
00000527

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