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!AWDec94/Goodies/DrawBasic/!DrawBasic/Info/

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.

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File contents
                   =============================
                   SUMMARY OF DRAWBASIC COMMANDS

                            Version 1.0

                          (September 1994)

                      � The LIBER ABACI Press
                        57 Queens Park Terrace,
                        BRIGHTON,
                        East Sussex Bn2 2YB

                   Copies of the Drawbasic book
                   are available at �14.95
                   from the publisher.

                   =============================




Resources.Paths :
===============

 Paths are discussed in Chapter 3 of the DrawBasic book. Pages 23-32
  
----------------------------------------------------------------------------- 
  � PATHS  
  --------
           
 �PathBegin(RETURN path)          (page 24)
 �PathEnd
            
                    �CurrentPath(path%)      �CurrentPath        
                    �CurrentSubpath(path%)   �CurrentSubpath
                    �Draw_PathHeader         
                    �DrawTrans         
----------------------------------------------------------------------------- 
  � FUNDAMENTAL DRAWING COMMANDS  (Pages 23-26)
  -------------------------------
          
 �Move(x,y)
 �Draw(x,y)
 �Bezier(a,b,c,d,x,y)                     pages 27-30
 �CloseWithLine
 
 �MovePolar(r,theta)                      pages 30-32       
 �DrawPolar(r,theta)         
    �Argument(y,x)                
    �Modulus(x,y)

===============================================================================     
 Resources.Points :
================

 Points are discussed in Chapter 4 of the DrawBasic book. Pages 38-40
  
 ----------------------------------------------------------------------------- 
  � POINTS  
  --------
    
 �Point(x,y)                �@Point(x,y)                 �Point(x,y)    
 �PointPolar(r,theta)       �@PointPolar(r,theta)        �PointPolar(r,theta)
              
    
 �Symbol(n%,point_size)       
  �PointSize  
  �SymbolType
  -----------------------------------------------------------------------------
===============================================================================     
!DrawBasic.Utils :
===============

 Paths are discussed in Chapter 3 of the DrawBasic book. Pages 23-32
  
----------------------------------------------------------------------------- 
 �  UNITS 
  --------  
 �Centimetres
 �Inches
  �Units                        �DrawUnits(a) 
----------------------------------------------------------------------------- 
 �  FRAME CO-ORDINATES 
  --------------------                    
 �FrameCoords(a,b,u,v)
 �GetFrameCoords(RETURN a,RETURN b,RETURN u, RETURN v) 
 �Origin(A,B)
----------------------------------------------------------------------------- 
 �  FRAME SIZE 
  ------------                 
 �FrameSize(a,b,width,height)
 �GetFrameSize(RETURN a%,RETURN b%,RETURN w% , RETURN h%)
 �ReduceFrameSize(fraction)               
 �ShowFrame            
   �Frame_Height                �FRAME_Height             
   �Frame_Width                 �FRAME_Width
   �Frame_x                     �FRAME_x
   �Frame_y                     �FRAME_y)
     
   �X_Scale                     �Y_Scale
   �Draw_X(x)                   �Draw_Y(y)
   �DrawDx                      �DrawDy                       
   
 -----------------------------------------------------------------------------    � SETTING UP
  ------------
                        
 �BeginDrawing                            
                         
 �Draw_AddCoords(x,y)                     
 �Draw_AddFloat(x)                        
 �Draw_AddString(pointer%,x$)             
 �Draw_AddWord(x%)                        
 �Draw_SetFileHeader                      
 �Draw_SetFontTable                       
 �Draw_SetUp
 
 �Preview                                
 �DrawPreviewBorders(max%,point%,colour%) 
 �DrawPreviewHScales(max%)                
 �DrawPreviewTitle(point%,colour%)        
 �DrawPreviewVScales(max%)
                             
 -----------------------------------------------------------------------------    � MISCELLANEOUS 
  ----------------                               

 �MoveMemory(address%,n_words%)                             
 �DotsPerInch=!(HIMEM+216)                
                   
 �DrawTrans                    
        
 �Epsilon                     
                  
 �FreeSlot                                
 �InFrame(x,y)                     �OutsideFrame(x,y)                            
                                
 �MaxNoofPoints                   �MinNoofPoints            
 �ObjectType(path)                        
                        
 �ReadSystemVariable(variable$)           
 �Leaf(x$)

-----------------------------------------------------------------------------
 Resources.Figures :
 ===================

  Figures are discussed in Chapter 4 of the DrawBasic book.
  
-----------------------------------------------------------------------------
  � FIGURES  (pages 33 - 38)
    -------                   
 �Arc(x,y,radius,theta,phi)        �@Arc(...)             �Arc(...)       
 �Circle(x,y,radius)               �@Circle(x,y,radius)   �Circle(x,y,radius)    �CirclePolar(r,theta,radius)      �@CirclePolar(...)     �CirclePolar(...)      �Cross(x,y,width,height)          �@Cross(x,y,...)       �Cross(x,y...)         �Diamond(x,y,width,height)        �@Diamond(x,y,...)     �Diamond(x,y,...)      �Ellipse(x,y,A,B)                 �@Ellipse(x,y,A,B)     �Ellipse(x,y,A,B)      �HLine(x,y,length)                �@HLine(x,y,length)    �HLine(x,y,length)     �Line(x,y,X,Y)                    �@Line(x,y,X,Y)        �Line(x,y,X,Y)         �Rectangle(x,y,width,height)      �@Rectangle(x,y,...)   �Rectangle(x,y,...)    �RegularPolygon(x,y,radius,n%)    �@RegularPolygon(...)  �RegularPolygon(...)   �Sector(x,y,radius,theta,phi)     �@Sector(x,y,...)      �Sector(x,y,...)      
 �Square(x,y,width)                �@Square(x,y,width)    �Square(x,y,width)     �Triangle(A,a,B,b,C,c)            �@Triangle(A,a,...)    �Triangle(A,a,...)     �VLine(x,y,length)                �@VLine(x,y,length)    �VLine(x,y,length)    -----------------------------------------------------------------------------               
 Resources.Scales :                       

 Scales are discussed in Chapter 8 of the DrawBasic book. Pages 67-78
  
 ----------------------------------------------------------------------------- 
  � SCREEN  
  --------                                  
  �Screen(a,b,u,v)                         
  �ScreenL(a,b,u,v)           
 ----------------------------------------------------------------------------- 
  � AXES  
  --------         
 �Axes(width)                    �@Axes                 �Axes                  
  �AxesWidth

 �AxesCaps(point%,capwidth%)
   �AxesCapPoint         
   �AxesCapWidth
               
 �AxesExtend(left%,right%,top%,down%)   
  �AxesExtendB  
  �AxesExtendL
  �AxesExtendR
  �AxesExtendT
 ----------------------------------------------------------------------------- 
  � SCALES  
  --------
           
 �AxesScale(HDiv%,HSubDiv%,VDiv%,VSubDiv%) 
 �FrameScale(HDiv%,HSubDiv%,VDiv%,VSubDiv%) 
 �Grid(HDiv%,HSubDiv%,VDiv%,VSubDiv%)
 
    �HScale(nx%,y,index%,tick_length,width)
    �@HScale(nx%,y,index%,tick_length)
    �HScaleSize(Nx%,nx%)
    �HLabels(nx%,y,index%)
    �HWidth(Wx,wx)
    �HLength(Lx%,lx%)
     �HDiv                      
     �HLength    
     �HScale(nx%,y,index%,tick_length)        
     �HSubDiv                  
     �HSubLength  
     �HSubWidth         
     �HWidth           
 
    �VScale(ny%,x,index%,tick_length,width)  
    �@VScale(ny%,x,index%,tick_length)
    �VScaleSize(Ny%,ny%)
    �VLabels(ny%,x,index%)
    �VWidth(Wy%,wy%)
    �VLength(Ly%,ly%)              
     �VDiv                       
     �VLength    
     �VScale(ny%,x,index%,tick_length)        
     �VSubDiv                    
     �VSubLength   
     �VSubWidth       
     �VWidth    

 �Scales(Nx%,nx%,Ny%,ny%)                 
 �ScalesLength(Lx%,lx%,Ly%,ly%)           
 �ScalesWidth(Wx,wx,Wy,wy)
               
  �Label(y)                  
 
 -----------------------------------------------------------------------------                  
                          
 �HDiv=!(HIMEM+136)                       
 �HLength=!(HIMEM+152)*640/FNY_Scale      
 �HScale(nx%,y,index%,tick_length)        
 �HSubDiv=!(HIMEM+140)                    
 �HSubLength=!(HIMEM+156)*640/FNY_Scale   
 �HSubWidth=!(HIMEM+172)/(1<<16)          
 �HWidth=!(HIMEM+168)/(1<<16)             
 �Label(y)                                
 �VDiv=!(HIMEM+144)                       
 �VLength=!(HIMEM+160)*640/FNX_Scale      
 �VScale(ny%,x,index%,tick_length)        
 �VSubDiv=!(HIMEM+148)                    
 �VSubLength=!(HIMEM+164)*640/FNX_Scale   
 �VSubWidth=!(HIMEM+180)/(1<<16)          
 �VWidth=!(HIMEM+176)/(1<<16)
 ===============================================================================     
 Resources.Fonts :
 ===============

  Fonts and text are discussed in Chapter 7 of the DrawBasic book. Pages 61-66
  
----------------------------------------------------------------------------- 
  � FONTS  
  -----------------------                                    
 �Font(font$,font_size%)      
 �FontSize(font_size%)
 �AddFont(font$)
 �CurrentFont(font%)
    �FontColour=!(HIMEM+88)      
    �FontSize=!(HIMEM+84)
-----------------------------------------------------------------------------   
  � PRINTING  
  -----------------------   
 �Print(text$,x,y)          
 �AnglePrint(text$,x,y,angle)
   �AnglePrint(text$,x,y,angle)       
   �Print(text$,x,y)            
   �Text(text$,x,y)         
 �TextColour(colour%)         
----------------------------------------------------------------------------- 
Resources.Attributes : 
=====================
 Line attributes are discussed in Chapter 5 of DrawBasic book. The commands
 have two forms:
 
 � a priori
 
   i.e. command then applies to every path as it is constructed

 � a posteori

   i.e. command applies to an already constructed path
        N.B. These commands end in the '@' character


    A PRIORI                                    A POSTEORI                 PAGE
    ========                                    ==========                 ====


 -----------------------------------------------------------------------------
  � LINE WIDTH
    ---------- 
 �Width(width)                            �Width@(Draw_Path%,width)         41       �LineWidth

 -----------------------------------------------------------------------------  
 � LINE JOINS
   ----------                 
 �BevelJoins                              �BevelJoins@(Draw_Path%)          53
 �MitreJoins                              �MitreJoins@(Draw_Path%)          53
 �RoundJoins                              �RoundJoins@(Draw_Path%)          53
 �Joins(index%)                           �Joins@(Draw_Path%,index%)

 ----------------------------------------------------------------------------- 
 � LINE CAPS
   ----------   
 �ButtCaps(index%)                        �ButtCaps@(Draw_Path%,index%)     54
 �RoundCaps(index%)                       �RoundCaps@(Draw_Path%,index%)    54   �SquareCaps(index%)                      �SquareCaps@(Draw_Path%,index%)   54   �TriangleCaps(index%,width,height)       �TriangleCaps@(Draw_Path%,...)    54
 ----------------------------------------------------------------------------- 
 � LINE DASH PATTERNS
   ------------------   
 �Dash(pattern%)                          �Dash@(Draw_Path%,pattern%)       51   �DashLength(pattern%,item%,length%)                                        52
 �DashOff
  �Dash                        
  �DashPattern(NumberOfElements%)                                           52
  �DotDash(length%)                                                         53
  �EquiDash(length%)                                                        53
  �NonEquiDash(stroke_length%,move_length%                                  53
 ----------------------------------------------------------------------------- 
 � Drawing a path with correct attributes
   --------------------------------------   
 �Draw_RenderPath(path%,transform)        
 �DrawPath(path%)                                                           43
 ----------------------------------------------------------------------------- 
 � COLOUR
   ------              
 �Colour(col%)                            �Colour@(Draw_Path%,colour%)      44
  �LineColour
  
 �Fill(col%)                              �Fill@(Draw_Path%,colour%)        45
  �FillColour
   
 �WindingRule(winding_rule%)              �WindingRule@(Draw_Path%, ...)    46
  �WindingRule
 ----------------------------------------------------------------------------- 
 � COLOUR MIXING   (page 44)
   -------------                         
 �Black                        
 �Blue                  
 �Cream             
 �Green                 
 �Grey(scale)                             
 �LightBlue            
 �LightGreen
 �Orange              
 �Red
 �White                           
 �Yellow
      
 �DesktopColour(colour%)                  
                                             
 �Shade(Red%,Green%,Blue%)=(Red%<<8)+(Gre 
 �ShadeCMYK(Cyan,Magenta,Yellow,Key)      
 �ShadeHSV(Hue,Saturation,Value)          
 �ShadePC(Red,Green,Blue)
               
 �Style                     

===============================================================================     
Resources.Transforms :                   
====================

 Transforms are discussed in Chapter 6 of the DrawBasic book. Pages 55-60
  
----------------------------------------------------------------------------- 
  � TRANFORMS  
  -----------
               
 �Transform(path,A(),b())             �Transform(path,A(),b())                  
 �Translate(path,dx,dy)               �Translate(path,dx,dy) 
 �Magnify(path,a,b,factor)            �Magnify(path,a,b,factor)    
 �Rotate(path,a,b,angle)              �Rotate(path,a,b,angle)

 �TransformPath(path,A(),b())              
 �TransformText(path,A(),b())    
 �Tile(path,rows%,columns%)
              
 �Copy(path%)                             
 �CopyPath(path%)                         
 �CopyText(path%)                         
 �CreateTransform(A(),b())                
 �TransformStore                 
                  
 �Draw_Bound                              
 �Draw_BoundingBox(path,RETURN dx%,RETURN dy%)                
                 
                    
===============================================================================     
Calculus.Graphs :
=================

 Graphs are discussed in Chapter 9 of the DrawBasic book. 

 -----------------------------------------------------------------------------
  � MATHEMATICAL FUNCTIONS  (pages 86-89)
    ----------------------                      
 �Graph(f$,n%)            �@Graph(f$,a,b,n%)         �Graph(f$,a,b,n%)           �Function(f$,n%)         �@Function(f$,a,b,n%)      �Function(f$,a,b,n%)
 �Points(f$,n%)           �@Points(f$,a,b,n%)        �Points(f$,a,b,n%)   
 �Curve(x$,y$,A,B,n%)     �@Curve(x$,y$,a,b,n%)      �Curve(x$,y$,A,B,n%)
  
        �ClosePlot(data(),x%,y%)
 
        �DrawClip(RETURN X,RETURN Y,x,y) 
        �CubicClip(RETURN X,RETURN Y,x,y,_h)     
                    
        �Draw_ControlLinearStep                  
        �Draw_DoubleStep                         
        �Draw_HalveStep
                                
        �Slope(data(),x%,y%,i%,RETURN mx,RETURN  
         �Slope(f$,X,Y,h,a,b,type%)                      
 -----------------------------------------------------------------------------
  � PLOTTING DISCRETE DATA   (pages 83-85)
    ----------------------                      
 �GraphPlot(data(),x%,y%)  �@GraphPlot(data(),x%,y%)   �GraphPlot(data(),x%,y%)  �LinePlot(data(),x%,y%)   �@LinePlot(data(),x%,y%)    �LinePlot(data(),x%,y%)   �Plot(data(),x%,y%)       �@Plot(data(),x%,y%)        �Plot(data(),x%,y%)

 �MatRead(data())                         
 �MaxMin(data(),RETURN min, RETURN max)    
 -----------------------------------------------------------------------------   � CHARTS  (pages 79-83)
   ------                                                                    
 �Pie(data())                                                                79
 �Histogram(data(),gap)                                                      81
 �BarChart(data())                                                           81
 
    �BarScales(Div%,Sub%)
     �BarScalesLarge
     �BarScalesSmall                                                   -----------------------------------------------------------------------------   � MISC.
  ------                           
 �Resolution(max%,min%)                                                     88
  �MaxNoofPoints            
  �MinNoofPoints
   �DotsPerInch
                     
 �ScreenSize(factor)
  �ScreenSize
                          
 �Accuracy(dots%)
 ===============================================================================     
Calculus.ODEs :
==============

  Ordinary differential equations are discussed in Chapter 9 of the DrawBasic
  book.
  
 -----------------------------------------------------------------------------
  � ORDINARY DIFFERENTIAL EQUATIONS  (pages 89-92)
    -------------------------------                            
 �GraphODE(f$,x,y,n%)   �@GraphODE(f$,x,y,n%)         �GraphODE(f$,x,y,n%) 
   �Runge_Kutta(f$,x,y,h)      
   �Runge_KuttaStep(f$,X,Y,h)  
 -----------------------------------------------------------------------------  
00000000  0a 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |.               |
00000010  20 20 20 20 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |    ============|
00000020  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
00000030  3d 0a 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |=.              |
00000040  20 20 20 20 20 53 55 4d  4d 41 52 59 20 4f 46 20  |     SUMMARY OF |
00000050  44 52 41 57 42 41 53 49  43 20 43 4f 4d 4d 41 4e  |DRAWBASIC COMMAN|
00000060  44 53 0a 0a 20 20 20 20  20 20 20 20 20 20 20 20  |DS..            |
00000070  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000080  56 65 72 73 69 6f 6e 20  31 2e 30 0a 0a 20 20 20  |Version 1.0..   |
00000090  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
000000a0  20 20 20 20 20 20 20 28  53 65 70 74 65 6d 62 65  |       (Septembe|
000000b0  72 20 31 39 39 34 29 0a  0a 20 20 20 20 20 20 20  |r 1994)..       |
000000c0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 a9  |               .|
000000d0  20 54 68 65 20 4c 49 42  45 52 20 41 42 41 43 49  | The LIBER ABACI|
000000e0  20 50 72 65 73 73 0a 20  20 20 20 20 20 20 20 20  | Press.         |
000000f0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 35  |               5|
00000100  37 20 51 75 65 65 6e 73  20 50 61 72 6b 20 54 65  |7 Queens Park Te|
00000110  72 72 61 63 65 2c 0a 20  20 20 20 20 20 20 20 20  |rrace,.         |
00000120  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 42  |               B|
00000130  52 49 47 48 54 4f 4e 2c  0a 20 20 20 20 20 20 20  |RIGHTON,.       |
00000140  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000150  20 45 61 73 74 20 53 75  73 73 65 78 20 42 6e 32  | East Sussex Bn2|
00000160  20 32 59 42 0a 0a 20 20  20 20 20 20 20 20 20 20  | 2YB..          |
00000170  20 20 20 20 20 20 20 20  20 43 6f 70 69 65 73 20  |         Copies |
00000180  6f 66 20 74 68 65 20 44  72 61 77 62 61 73 69 63  |of the Drawbasic|
00000190  20 62 6f 6f 6b 0a 20 20  20 20 20 20 20 20 20 20  | book.          |
000001a0  20 20 20 20 20 20 20 20  20 61 72 65 20 61 76 61  |         are ava|
000001b0  69 6c 61 62 6c 65 20 61  74 20 a3 31 34 2e 39 35  |ilable at .14.95|
000001c0  0a 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |.               |
000001d0  20 20 20 20 66 72 6f 6d  20 74 68 65 20 70 75 62  |    from the pub|
000001e0  6c 69 73 68 65 72 2e 0a  0a 20 20 20 20 20 20 20  |lisher...       |
000001f0  20 20 20 20 20 20 20 20  20 20 20 20 3d 3d 3d 3d  |            ====|
00000200  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
00000210  3d 3d 3d 3d 3d 3d 3d 3d  3d 0a 0a 0a 0a 0a 52 65  |=========.....Re|
00000220  73 6f 75 72 63 65 73 2e  50 61 74 68 73 20 3a 0a  |sources.Paths :.|
00000230  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 0a  |===============.|
00000240  0a 20 50 61 74 68 73 20  61 72 65 20 64 69 73 63  |. Paths are disc|
00000250  75 73 73 65 64 20 69 6e  20 43 68 61 70 74 65 72  |ussed in Chapter|
00000260  20 33 20 6f 66 20 74 68  65 20 44 72 61 77 42 61  | 3 of the DrawBa|
00000270  73 69 63 20 62 6f 6f 6b  2e 20 50 61 67 65 73 20  |sic book. Pages |
00000280  32 33 2d 33 32 0a 20 20  0a 2d 2d 2d 2d 2d 2d 2d  |23-32.  .-------|
00000290  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
000002d0  2d 2d 2d 2d 2d 2d 20 0a  20 20 8f 20 50 41 54 48  |------ .  . PATH|
000002e0  53 20 20 0a 20 20 2d 2d  2d 2d 2d 2d 2d 2d 0a 20  |S  .  --------. |
000002f0  20 20 20 20 20 20 20 20  20 20 0a 20 b7 50 61 74  |          . .Pat|
00000300  68 42 65 67 69 6e 28 52  45 54 55 52 4e 20 70 61  |hBegin(RETURN pa|
00000310  74 68 29 20 20 20 20 20  20 20 20 20 20 28 70 61  |th)          (pa|
00000320  67 65 20 32 34 29 0a 20  b7 50 61 74 68 45 6e 64  |ge 24). .PathEnd|
00000330  0a 20 20 20 20 20 20 20  20 20 20 20 20 0a 20 20  |.            .  |
00000340  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000350  20 20 b7 43 75 72 72 65  6e 74 50 61 74 68 28 70  |  .CurrentPath(p|
00000360  61 74 68 25 29 20 20 20  20 20 20 bb 43 75 72 72  |ath%)      .Curr|
00000370  65 6e 74 50 61 74 68 20  20 20 20 20 20 20 20 0a  |entPath        .|
00000380  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000390  20 20 20 20 b7 43 75 72  72 65 6e 74 53 75 62 70  |    .CurrentSubp|
000003a0  61 74 68 28 70 61 74 68  25 29 20 20 20 bb 43 75  |ath(path%)   .Cu|
000003b0  72 72 65 6e 74 53 75 62  70 61 74 68 0a 20 20 20  |rrentSubpath.   |
000003c0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
000003d0  20 b7 44 72 61 77 5f 50  61 74 68 48 65 61 64 65  | .Draw_PathHeade|
000003e0  72 20 20 20 20 20 20 20  20 20 0a 20 20 20 20 20  |r         .     |
000003f0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 bb  |               .|
00000400  44 72 61 77 54 72 61 6e  73 20 20 20 20 20 20 20  |DrawTrans       |
00000410  20 20 0a 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |  .-------------|
00000420  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
00000460  20 0a 20 20 8f 20 46 55  4e 44 41 4d 45 4e 54 41  | .  . FUNDAMENTA|
00000470  4c 20 44 52 41 57 49 4e  47 20 43 4f 4d 4d 41 4e  |L DRAWING COMMAN|
00000480  44 53 20 20 28 50 61 67  65 73 20 32 33 2d 32 36  |DS  (Pages 23-26|
00000490  29 0a 20 20 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |).  ------------|
000004a0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
000004b0  2d 2d 2d 0a 20 20 20 20  20 20 20 20 20 20 0a 20  |---.          . |
000004c0  b7 4d 6f 76 65 28 78 2c  79 29 0a 20 b7 44 72 61  |.Move(x,y). .Dra|
000004d0  77 28 78 2c 79 29 0a 20  b7 42 65 7a 69 65 72 28  |w(x,y). .Bezier(|
000004e0  61 2c 62 2c 63 2c 64 2c  78 2c 79 29 20 20 20 20  |a,b,c,d,x,y)    |
000004f0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000500  20 70 61 67 65 73 20 32  37 2d 33 30 0a 20 b7 43  | pages 27-30. .C|
00000510  6c 6f 73 65 57 69 74 68  4c 69 6e 65 0a 20 0a 20  |loseWithLine. . |
00000520  b7 4d 6f 76 65 50 6f 6c  61 72 28 72 2c 74 68 65  |.MovePolar(r,the|
00000530  74 61 29 20 20 20 20 20  20 20 20 20 20 20 20 20  |ta)             |
00000540  20 20 20 20 20 20 20 20  20 70 61 67 65 73 20 33  |         pages 3|
00000550  30 2d 33 32 20 20 20 20  20 20 20 0a 20 b7 44 72  |0-32       . .Dr|
00000560  61 77 50 6f 6c 61 72 28  72 2c 74 68 65 74 61 29  |awPolar(r,theta)|
00000570  20 20 20 20 20 20 20 20  20 0a 20 20 20 20 bb 41  |         .    .A|
00000580  72 67 75 6d 65 6e 74 28  79 2c 78 29 20 20 20 20  |rgument(y,x)    |
00000590  20 20 20 20 20 20 20 20  20 20 20 20 0a 20 20 20  |            .   |
000005a0  20 bb 4d 6f 64 75 6c 75  73 28 78 2c 79 29 0a 0a  | .Modulus(x,y)..|
000005b0  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
*
000005f0  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 20  |=============== |
00000600  20 20 20 20 0a 20 52 65  73 6f 75 72 63 65 73 2e  |    . Resources.|
00000610  50 6f 69 6e 74 73 20 3a  0a 3d 3d 3d 3d 3d 3d 3d  |Points :.=======|
00000620  3d 3d 3d 3d 3d 3d 3d 3d  3d 0a 0a 20 50 6f 69 6e  |=========.. Poin|
00000630  74 73 20 61 72 65 20 64  69 73 63 75 73 73 65 64  |ts are discussed|
00000640  20 69 6e 20 43 68 61 70  74 65 72 20 34 20 6f 66  | in Chapter 4 of|
00000650  20 74 68 65 20 44 72 61  77 42 61 73 69 63 20 62  | the DrawBasic b|
00000660  6f 6f 6b 2e 20 50 61 67  65 73 20 33 38 2d 34 30  |ook. Pages 38-40|
00000670  0a 20 20 0a 20 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |.  . -----------|
00000680  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
000006c0  2d 2d 20 0a 20 20 8f 20  50 4f 49 4e 54 53 20 20  |-- .  . POINTS  |
000006d0  0a 20 20 2d 2d 2d 2d 2d  2d 2d 2d 0a 20 20 20 20  |.  --------.    |
000006e0  0a 20 b7 50 6f 69 6e 74  28 78 2c 79 29 20 20 20  |. .Point(x,y)   |
000006f0  20 20 20 20 20 20 20 20  20 20 20 20 20 b7 40 50  |             .@P|
00000700  6f 69 6e 74 28 78 2c 79  29 20 20 20 20 20 20 20  |oint(x,y)       |
00000710  20 20 20 20 20 20 20 20  20 20 bb 50 6f 69 6e 74  |          .Point|
00000720  28 78 2c 79 29 20 20 20  20 0a 20 b7 50 6f 69 6e  |(x,y)    . .Poin|
00000730  74 50 6f 6c 61 72 28 72  2c 74 68 65 74 61 29 20  |tPolar(r,theta) |
00000740  20 20 20 20 20 20 b7 40  50 6f 69 6e 74 50 6f 6c  |      .@PointPol|
00000750  61 72 28 72 2c 74 68 65  74 61 29 20 20 20 20 20  |ar(r,theta)     |
00000760  20 20 20 bb 50 6f 69 6e  74 50 6f 6c 61 72 28 72  |   .PointPolar(r|
00000770  2c 74 68 65 74 61 29 0a  20 20 20 20 20 20 20 20  |,theta).        |
00000780  20 20 20 20 20 20 0a 20  20 20 20 0a 20 b7 53 79  |      .    . .Sy|
00000790  6d 62 6f 6c 28 6e 25 2c  70 6f 69 6e 74 5f 73 69  |mbol(n%,point_si|
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000007c0  62 6f 6c 54 79 70 65 0a  20 20 2d 2d 2d 2d 2d 2d  |bolType.  ------|
000007d0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
00000810  2d 2d 2d 2d 2d 2d 2d 0a  3d 3d 3d 3d 3d 3d 3d 3d  |-------.========|
00000820  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
*
00000860  3d 3d 3d 3d 3d 3d 3d 20  20 20 20 20 0a 21 44 72  |=======     .!Dr|
00000870  61 77 42 61 73 69 63 2e  55 74 69 6c 73 20 3a 0a  |awBasic.Utils :.|
00000880  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 0a  |===============.|
00000890  0a 20 50 61 74 68 73 20  61 72 65 20 64 69 73 63  |. Paths are disc|
000008a0  75 73 73 65 64 20 69 6e  20 43 68 61 70 74 65 72  |ussed in Chapter|
000008b0  20 33 20 6f 66 20 74 68  65 20 44 72 61 77 42 61  | 3 of the DrawBa|
000008c0  73 69 63 20 62 6f 6f 6b  2e 20 50 61 67 65 73 20  |sic book. Pages |
000008d0  32 33 2d 33 32 0a 20 20  0a 2d 2d 2d 2d 2d 2d 2d  |23-32.  .-------|
000008e0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
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00000930  53 20 0a 20 20 2d 2d 2d  2d 2d 2d 2d 2d 20 20 0a  |S .  --------  .|
00000940  20 b7 43 65 6e 74 69 6d  65 74 72 65 73 0a 20 b7  | .Centimetres. .|
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00000980  73 28 61 29 20 0a 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |s(a) .----------|
00000990  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
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000009e0  4f 2d 4f 52 44 49 4e 41  54 45 53 20 0a 20 20 2d  |O-ORDINATES .  -|
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00000a00  2d 2d 2d 20 20 20 20 20  20 20 20 20 20 20 20 20  |---             |
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00000a60  52 4e 20 76 29 20 0a 20  b7 4f 72 69 67 69 6e 28  |RN v) . .Origin(|
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*
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00000ad0  5a 45 20 0a 20 20 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |ZE .  ----------|
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00000c40  bb 46 52 41 4d 45 5f 79  29 0a 20 20 20 20 20 0a  |.FRAME_y).     .|
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00000c60  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000c70  bb 59 5f 53 63 61 6c 65  0a 20 20 20 bb 44 72 61  |.Y_Scale.   .Dra|
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00000ce0  20 20 0a 20 20 20 0a 20  2d 2d 2d 2d 2d 2d 2d 2d  |  .   . --------|
00000cf0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
00000d30  2d 2d 2d 2d 2d 20 20 20  20 8f 20 53 45 54 54 49  |-----    . SETTI|
00000d40  4e 47 20 55 50 0a 20 20  2d 2d 2d 2d 2d 2d 2d 2d  |NG UP.  --------|
00000d50  2d 2d 2d 2d 0a 20 20 20  20 20 20 20 20 20 20 20  |----.           |
00000d60  20 20 20 20 20 20 20 20  20 20 20 20 20 0a 20 b7  |             . .|
00000d70  42 65 67 69 6e 44 72 61  77 69 6e 67 20 20 20 20  |BeginDrawing    |
00000d80  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000d90  20 20 20 20 20 20 20 20  0a 20 20 20 20 20 20 20  |        .       |
00000da0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
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00000dc0  72 64 73 28 78 2c 79 29  20 20 20 20 20 20 20 20  |rds(x,y)        |
00000dd0  20 20 20 20 20 20 20 20  20 20 20 20 20 0a 20 b7  |             . .|
00000de0  44 72 61 77 5f 41 64 64  46 6c 6f 61 74 28 78 29  |Draw_AddFloat(x)|
00000df0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00000e00  20 20 20 20 20 20 20 20  0a 20 b7 44 72 61 77 5f  |        . .Draw_|
00000e10  41 64 64 53 74 72 69 6e  67 28 70 6f 69 6e 74 65  |AddString(pointe|
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00000fa0  20 20 20 20 20 20 20 0a  20 2d 2d 2d 2d 2d 2d 2d  |       . -------|
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*
00000ff0  2d 2d 2d 2d 2d 2d 20 20  20 20 8f 20 4d 49 53 43  |------    . MISC|
00001000  45 4c 4c 41 4e 45 4f 55  53 20 0a 20 20 2d 2d 2d  |ELLANEOUS .  ---|
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00001190  20 0a 20 20 20 20 20 20  20 20 20 20 20 20 20 20  | .              |
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*
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000012d0  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
000012e0  3d 3d 0a 0a 20 20 46 69  67 75 72 65 73 20 61 72  |==..  Figures ar|
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*
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*
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*
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*
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*
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*
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*
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*
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*
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00003640  72 61 6e 73 6c 61 74 65  28 70 61 74 68 2c 64 78  |ranslate(path,dx|
00003650  2c 64 79 29 20 0a 20 b7  4d 61 67 6e 69 66 79 28  |,dy) . .Magnify(|
00003660  70 61 74 68 2c 61 2c 62  2c 66 61 63 74 6f 72 29  |path,a,b,factor)|
00003670  20 20 20 20 20 20 20 20  20 20 20 20 bb 4d 61 67  |            .Mag|
00003680  6e 69 66 79 28 70 61 74  68 2c 61 2c 62 2c 66 61  |nify(path,a,b,fa|
00003690  63 74 6f 72 29 20 20 20  20 0a 20 b7 52 6f 74 61  |ctor)    . .Rota|
000036a0  74 65 28 70 61 74 68 2c  61 2c 62 2c 61 6e 67 6c  |te(path,a,b,angl|
000036b0  65 29 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |e)              |
000036c0  bb 52 6f 74 61 74 65 28  70 61 74 68 2c 61 2c 62  |.Rotate(path,a,b|
000036d0  2c 61 6e 67 6c 65 29 0a  0a 20 b7 54 72 61 6e 73  |,angle).. .Trans|
000036e0  66 6f 72 6d 50 61 74 68  28 70 61 74 68 2c 41 28  |formPath(path,A(|
000036f0  29 2c 62 28 29 29 20 20  20 20 20 20 20 20 20 20  |),b())          |
00003700  20 20 20 20 0a 20 b7 54  72 61 6e 73 66 6f 72 6d  |    . .Transform|
00003710  54 65 78 74 28 70 61 74  68 2c 41 28 29 2c 62 28  |Text(path,A(),b(|
00003720  29 29 20 20 20 20 0a 20  b7 54 69 6c 65 28 70 61  |))    . .Tile(pa|
00003730  74 68 2c 72 6f 77 73 25  2c 63 6f 6c 75 6d 6e 73  |th,rows%,columns|
00003740  25 29 0a 20 20 20 20 20  20 20 20 20 20 20 20 20  |%).             |
00003750  20 0a 20 bb 43 6f 70 79  28 70 61 74 68 25 29 20  | . .Copy(path%) |
00003760  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00003770  20 20 20 20 20 20 20 20  20 20 20 20 0a 20 bb 43  |            . .C|
00003780  6f 70 79 50 61 74 68 28  70 61 74 68 25 29 20 20  |opyPath(path%)  |
00003790  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
000037a0  20 20 20 20 20 20 20 0a  20 bb 43 6f 70 79 54 65  |       . .CopyTe|
000037b0  78 74 28 70 61 74 68 25  29 20 20 20 20 20 20 20  |xt(path%)       |
000037c0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
000037d0  20 20 0a 20 bb 43 72 65  61 74 65 54 72 61 6e 73  |  . .CreateTrans|
000037e0  66 6f 72 6d 28 41 28 29  2c 62 28 29 29 20 20 20  |form(A(),b())   |
000037f0  20 20 20 20 20 20 20 20  20 20 20 20 20 0a 20 bb  |             . .|
00003800  54 72 61 6e 73 66 6f 72  6d 53 74 6f 72 65 20 20  |TransformStore  |
00003810  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 0a  |               .|
00003820  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00003830  20 20 0a 20 b7 44 72 61  77 5f 42 6f 75 6e 64 20  |  . .Draw_Bound |
00003840  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00003850  20 20 20 20 20 20 20 20  20 20 20 20 20 0a 20 b7  |             . .|
00003860  44 72 61 77 5f 42 6f 75  6e 64 69 6e 67 42 6f 78  |Draw_BoundingBox|
00003870  28 70 61 74 68 2c 52 45  54 55 52 4e 20 64 78 25  |(path,RETURN dx%|
00003880  2c 52 45 54 55 52 4e 20  64 79 25 29 20 20 20 20  |,RETURN dy%)    |
00003890  20 20 20 20 20 20 20 20  20 20 20 20 0a 20 20 20  |            .   |
000038a0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 0a 20  |              . |
000038b0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
000038c0  20 20 20 0a 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |   .============|
000038d0  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
*
00003910  3d 3d 3d 20 20 20 20 20  0a 43 61 6c 63 75 6c 75  |===     .Calculu|
00003920  73 2e 47 72 61 70 68 73  20 3a 0a 3d 3d 3d 3d 3d  |s.Graphs :.=====|
00003930  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 0a 0a 20 47  |============.. G|
00003940  72 61 70 68 73 20 61 72  65 20 64 69 73 63 75 73  |raphs are discus|
00003950  73 65 64 20 69 6e 20 43  68 61 70 74 65 72 20 39  |sed in Chapter 9|
00003960  20 6f 66 20 74 68 65 20  44 72 61 77 42 61 73 69  | of the DrawBasi|
00003970  63 20 62 6f 6f 6b 2e 20  0a 0a 20 2d 2d 2d 2d 2d  |c book. .. -----|
00003980  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
000039c0  2d 2d 2d 2d 2d 2d 2d 2d  0a 20 20 8f 20 4d 41 54  |--------.  . MAT|
000039d0  48 45 4d 41 54 49 43 41  4c 20 46 55 4e 43 54 49  |HEMATICAL FUNCTI|
000039e0  4f 4e 53 20 20 28 70 61  67 65 73 20 38 36 2d 38  |ONS  (pages 86-8|
000039f0  39 29 0a 20 20 20 20 2d  2d 2d 2d 2d 2d 2d 2d 2d  |9).    ---------|
00003a00  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 20 20 20  |-------------   |
00003a10  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00003a20  20 20 20 0a 20 b7 47 72  61 70 68 28 66 24 2c 6e  |   . .Graph(f$,n|
00003a30  25 29 20 20 20 20 20 20  20 20 20 20 20 20 b7 40  |%)            .@|
00003a40  47 72 61 70 68 28 66 24  2c 61 2c 62 2c 6e 25 29  |Graph(f$,a,b,n%)|
00003a50  20 20 20 20 20 20 20 20  20 bb 47 72 61 70 68 28  |         .Graph(|
00003a60  66 24 2c 61 2c 62 2c 6e  25 29 20 20 20 20 20 20  |f$,a,b,n%)      |
00003a70  20 20 20 20 20 b7 46 75  6e 63 74 69 6f 6e 28 66  |     .Function(f|
00003a80  24 2c 6e 25 29 20 20 20  20 20 20 20 20 20 b7 40  |$,n%)         .@|
00003a90  46 75 6e 63 74 69 6f 6e  28 66 24 2c 61 2c 62 2c  |Function(f$,a,b,|
00003aa0  6e 25 29 20 20 20 20 20  20 bb 46 75 6e 63 74 69  |n%)      .Functi|
00003ab0  6f 6e 28 66 24 2c 61 2c  62 2c 6e 25 29 0a 20 b7  |on(f$,a,b,n%). .|
00003ac0  50 6f 69 6e 74 73 28 66  24 2c 6e 25 29 20 20 20  |Points(f$,n%)   |
00003ad0  20 20 20 20 20 20 20 20  b7 40 50 6f 69 6e 74 73  |        .@Points|
00003ae0  28 66 24 2c 61 2c 62 2c  6e 25 29 20 20 20 20 20  |(f$,a,b,n%)     |
00003af0  20 20 20 bb 50 6f 69 6e  74 73 28 66 24 2c 61 2c  |   .Points(f$,a,|
00003b00  62 2c 6e 25 29 20 20 20  0a 20 b7 43 75 72 76 65  |b,n%)   . .Curve|
00003b10  28 78 24 2c 79 24 2c 41  2c 42 2c 6e 25 29 20 20  |(x$,y$,A,B,n%)  |
00003b20  20 20 20 b7 40 43 75 72  76 65 28 78 24 2c 79 24  |   .@Curve(x$,y$|
00003b30  2c 61 2c 62 2c 6e 25 29  20 20 20 20 20 20 bb 43  |,a,b,n%)      .C|
00003b40  75 72 76 65 28 78 24 2c  79 24 2c 41 2c 42 2c 6e  |urve(x$,y$,A,B,n|
00003b50  25 29 0a 20 20 0a 20 20  20 20 20 20 20 20 b7 43  |%).  .        .C|
00003b60  6c 6f 73 65 50 6c 6f 74  28 64 61 74 61 28 29 2c  |losePlot(data(),|
00003b70  78 25 2c 79 25 29 0a 20  0a 20 20 20 20 20 20 20  |x%,y%). .       |
00003b80  20 b7 44 72 61 77 43 6c  69 70 28 52 45 54 55 52  | .DrawClip(RETUR|
00003b90  4e 20 58 2c 52 45 54 55  52 4e 20 59 2c 78 2c 79  |N X,RETURN Y,x,y|
00003ba0  29 20 0a 20 20 20 20 20  20 20 20 b7 43 75 62 69  |) .        .Cubi|
00003bb0  63 43 6c 69 70 28 52 45  54 55 52 4e 20 58 2c 52  |cClip(RETURN X,R|
00003bc0  45 54 55 52 4e 20 59 2c  78 2c 79 2c 5f 68 29 20  |ETURN Y,x,y,_h) |
00003bd0  20 20 20 20 0a 20 20 20  20 20 20 20 20 20 20 20  |    .           |
00003be0  20 20 20 20 20 20 20 20  20 0a 20 20 20 20 20 20  |         .      |
00003bf0  20 20 b7 44 72 61 77 5f  43 6f 6e 74 72 6f 6c 4c  |  .Draw_ControlL|
00003c00  69 6e 65 61 72 53 74 65  70 20 20 20 20 20 20 20  |inearStep       |
00003c10  20 20 20 20 20 20 20 20  20 20 20 0a 20 20 20 20  |           .    |
00003c20  20 20 20 20 b7 44 72 61  77 5f 44 6f 75 62 6c 65  |    .Draw_Double|
00003c30  53 74 65 70 20 20 20 20  20 20 20 20 20 20 20 20  |Step            |
00003c40  20 20 20 20 20 20 20 20  20 20 20 20 20 0a 20 20  |             .  |
00003c50  20 20 20 20 20 20 b7 44  72 61 77 5f 48 61 6c 76  |      .Draw_Halv|
00003c60  65 53 74 65 70 0a 20 20  20 20 20 20 20 20 20 20  |eStep.          |
00003c70  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00003c80  20 20 20 20 20 20 0a 20  20 20 20 20 20 20 20 b7  |      .        .|
00003c90  53 6c 6f 70 65 28 64 61  74 61 28 29 2c 78 25 2c  |Slope(data(),x%,|
00003ca0  79 25 2c 69 25 2c 52 45  54 55 52 4e 20 6d 78 2c  |y%,i%,RETURN mx,|
00003cb0  52 45 54 55 52 4e 20 20  0a 20 20 20 20 20 20 20  |RETURN  .       |
00003cc0  20 20 bb 53 6c 6f 70 65  28 66 24 2c 58 2c 59 2c  |  .Slope(f$,X,Y,|
00003cd0  68 2c 61 2c 62 2c 74 79  70 65 25 29 20 20 20 20  |h,a,b,type%)    |
00003ce0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00003cf0  20 20 0a 20 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |  . ------------|
00003d00  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
00003d40  2d 0a 20 20 8f 20 50 4c  4f 54 54 49 4e 47 20 44  |-.  . PLOTTING D|
00003d50  49 53 43 52 45 54 45 20  44 41 54 41 20 20 20 28  |ISCRETE DATA   (|
00003d60  70 61 67 65 73 20 38 33  2d 38 35 29 0a 20 20 20  |pages 83-85).   |
00003d70  20 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  | ---------------|
00003d80  2d 2d 2d 2d 2d 2d 2d 20  20 20 20 20 20 20 20 20  |-------         |
00003d90  20 20 20 20 20 20 20 20  20 20 20 20 20 0a 20 b7  |             . .|
00003da0  47 72 61 70 68 50 6c 6f  74 28 64 61 74 61 28 29  |GraphPlot(data()|
00003db0  2c 78 25 2c 79 25 29 20  20 b7 40 47 72 61 70 68  |,x%,y%)  .@Graph|
00003dc0  50 6c 6f 74 28 64 61 74  61 28 29 2c 78 25 2c 79  |Plot(data(),x%,y|
00003dd0  25 29 20 20 20 bb 47 72  61 70 68 50 6c 6f 74 28  |%)   .GraphPlot(|
00003de0  64 61 74 61 28 29 2c 78  25 2c 79 25 29 20 20 b7  |data(),x%,y%)  .|
00003df0  4c 69 6e 65 50 6c 6f 74  28 64 61 74 61 28 29 2c  |LinePlot(data(),|
00003e00  78 25 2c 79 25 29 20 20  20 b7 40 4c 69 6e 65 50  |x%,y%)   .@LineP|
00003e10  6c 6f 74 28 64 61 74 61  28 29 2c 78 25 2c 79 25  |lot(data(),x%,y%|
00003e20  29 20 20 20 20 bb 4c 69  6e 65 50 6c 6f 74 28 64  |)    .LinePlot(d|
00003e30  61 74 61 28 29 2c 78 25  2c 79 25 29 20 20 20 b7  |ata(),x%,y%)   .|
00003e40  50 6c 6f 74 28 64 61 74  61 28 29 2c 78 25 2c 79  |Plot(data(),x%,y|
00003e50  25 29 20 20 20 20 20 20  20 b7 40 50 6c 6f 74 28  |%)       .@Plot(|
00003e60  64 61 74 61 28 29 2c 78  25 2c 79 25 29 20 20 20  |data(),x%,y%)   |
00003e70  20 20 20 20 20 bb 50 6c  6f 74 28 64 61 74 61 28  |     .Plot(data(|
00003e80  29 2c 78 25 2c 79 25 29  0a 0a 20 b7 4d 61 74 52  |),x%,y%).. .MatR|
00003e90  65 61 64 28 64 61 74 61  28 29 29 20 20 20 20 20  |ead(data())     |
00003ea0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00003eb0  20 20 20 20 0a 20 b7 4d  61 78 4d 69 6e 28 64 61  |    . .MaxMin(da|
00003ec0  74 61 28 29 2c 52 45 54  55 52 4e 20 6d 69 6e 2c  |ta(),RETURN min,|
00003ed0  20 52 45 54 55 52 4e 20  6d 61 78 29 20 20 20 20  | RETURN max)    |
00003ee0  0a 20 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |. --------------|
00003ef0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
00003f20  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 20  |--------------- |
00003f30  20 20 8f 20 43 48 41 52  54 53 20 20 28 70 61 67  |  . CHARTS  (pag|
00003f40  65 73 20 37 39 2d 38 33  29 0a 20 20 20 2d 2d 2d  |es 79-83).   ---|
00003f50  2d 2d 2d 20 20 20 20 20  20 20 20 20 20 20 20 20  |---             |
00003f60  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
*
00003f90  20 20 20 20 20 20 20 0a  20 b7 50 69 65 28 64 61  |       . .Pie(da|
00003fa0  74 61 28 29 29 20 20 20  20 20 20 20 20 20 20 20  |ta())           |
00003fb0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
*
00003fe0  20 20 20 20 20 37 39 0a  20 b7 48 69 73 74 6f 67  |     79. .Histog|
00003ff0  72 61 6d 28 64 61 74 61  28 29 2c 67 61 70 29 20  |ram(data(),gap) |
00004000  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
*
00004030  20 20 20 20 20 38 31 0a  20 b7 42 61 72 43 68 61  |     81. .BarCha|
00004040  72 74 28 64 61 74 61 28  29 29 20 20 20 20 20 20  |rt(data())      |
00004050  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
*
00004080  20 20 20 20 20 38 31 0a  20 0a 20 20 20 20 b7 42  |     81. .    .B|
00004090  61 72 53 63 61 6c 65 73  28 44 69 76 25 2c 53 75  |arScales(Div%,Su|
000040a0  62 25 29 0a 20 20 20 20  20 bb 42 61 72 53 63 61  |b%).     .BarSca|
000040b0  6c 65 73 4c 61 72 67 65  0a 20 20 20 20 20 bb 42  |lesLarge.     .B|
000040c0  61 72 53 63 61 6c 65 73  53 6d 61 6c 6c 20 20 20  |arScalesSmall   |
000040d0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
*
00004100  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
00004140  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 20 20 20  |-------------   |
00004150  8f 20 4d 49 53 43 2e 0a  20 20 2d 2d 2d 2d 2d 2d  |. MISC..  ------|
00004160  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
00004170  20 20 20 20 20 20 20 20  20 20 20 0a 20 b7 52 65  |           . .Re|
00004180  73 6f 6c 75 74 69 6f 6e  28 6d 61 78 25 2c 6d 69  |solution(max%,mi|
00004190  6e 25 29 20 20 20 20 20  20 20 20 20 20 20 20 20  |n%)             |
000041a0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |                |
*
000041c0  20 20 20 20 20 20 20 20  38 38 0a 20 20 bb 4d 61  |        88.  .Ma|
000041d0  78 4e 6f 6f 66 50 6f 69  6e 74 73 20 20 20 20 20  |xNoofPoints     |
000041e0  20 20 20 20 20 20 20 0a  20 20 bb 4d 69 6e 4e 6f  |       .  .MinNo|
000041f0  6f 66 50 6f 69 6e 74 73  0a 20 20 20 bb 44 6f 74  |ofPoints.   .Dot|
00004200  73 50 65 72 49 6e 63 68  0a 20 20 20 20 20 20 20  |sPerInch.       |
00004210  20 20 20 20 20 20 20 20  20 20 20 20 20 20 0a 20  |              . |
00004220  b7 53 63 72 65 65 6e 53  69 7a 65 28 66 61 63 74  |.ScreenSize(fact|
00004230  6f 72 29 0a 20 20 bb 53  63 72 65 65 6e 53 69 7a  |or).  .ScreenSiz|
00004240  65 0a 20 20 20 20 20 20  20 20 20 20 20 20 20 20  |e.              |
00004250  20 20 20 20 20 20 20 20  20 20 20 20 0a 20 b7 41  |            . .A|
00004260  63 63 75 72 61 63 79 28  64 6f 74 73 25 29 0a 20  |ccuracy(dots%). |
00004270  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |================|
*
000042b0  3d 3d 3d 3d 3d 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 20  |=============== |
000042c0  20 20 20 20 0a 43 61 6c  63 75 6c 75 73 2e 4f 44  |    .Calculus.OD|
000042d0  45 73 20 3a 0a 3d 3d 3d  3d 3d 3d 3d 3d 3d 3d 3d  |Es :.===========|
000042e0  3d 3d 3d 0a 0a 20 20 4f  72 64 69 6e 61 72 79 20  |===..  Ordinary |
000042f0  64 69 66 66 65 72 65 6e  74 69 61 6c 20 65 71 75  |differential equ|
00004300  61 74 69 6f 6e 73 20 61  72 65 20 64 69 73 63 75  |ations are discu|
00004310  73 73 65 64 20 69 6e 20  43 68 61 70 74 65 72 20  |ssed in Chapter |
00004320  39 20 6f 66 20 74 68 65  20 44 72 61 77 42 61 73  |9 of the DrawBas|
00004330  69 63 0a 20 20 62 6f 6f  6b 2e 0a 20 20 0a 20 2d  |ic.  book..  . -|
00004340  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
00004380  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 0a 20 20 8f  |------------.  .|
00004390  20 4f 52 44 49 4e 41 52  59 20 44 49 46 46 45 52  | ORDINARY DIFFER|
000043a0  45 4e 54 49 41 4c 20 45  51 55 41 54 49 4f 4e 53  |ENTIAL EQUATIONS|
000043b0  20 20 28 70 61 67 65 73  20 38 39 2d 39 32 29 0a  |  (pages 89-92).|
000043c0  20 20 20 20 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |    ------------|
000043d0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
000043e0  2d 2d 2d 20 20 20 20 20  20 20 20 20 20 20 20 20  |---             |
000043f0  20 20 20 20 20 20 20 20  20 20 20 20 20 20 20 0a  |               .|
00004400  20 b7 47 72 61 70 68 4f  44 45 28 66 24 2c 78 2c  | .GraphODE(f$,x,|
00004410  79 2c 6e 25 29 20 20 20  b7 40 47 72 61 70 68 4f  |y,n%)   .@GraphO|
00004420  44 45 28 66 24 2c 78 2c  79 2c 6e 25 29 20 20 20  |DE(f$,x,y,n%)   |
00004430  20 20 20 20 20 20 bb 47  72 61 70 68 4f 44 45 28  |      .GraphODE(|
00004440  66 24 2c 78 2c 79 2c 6e  25 29 20 0a 20 20 20 bb  |f$,x,y,n%) .   .|
00004450  52 75 6e 67 65 5f 4b 75  74 74 61 28 66 24 2c 78  |Runge_Kutta(f$,x|
00004460  2c 79 2c 68 29 20 20 20  20 20 20 0a 20 20 20 bb  |,y,h)      .   .|
00004470  52 75 6e 67 65 5f 4b 75  74 74 61 53 74 65 70 28  |Runge_KuttaStep(|
00004480  66 24 2c 58 2c 59 2c 68  29 20 20 0a 20 2d 2d 2d  |f$,X,Y,h)  . ---|
00004490  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 2d 2d 2d 2d 2d 2d  |----------------|
*
000044d0  2d 2d 2d 2d 2d 2d 2d 2d  2d 2d 20 20              |----------  |
000044dc

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