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4.12.4 Greyscale Graphics

25592 SubRepl ( grb1 grb2 #x1 #y1 #x2 #y2 #W #H → grb1' )
Replace a part of grb1 with a part of grb2 in REPLACE mode.
25597 SubGor ( grb1 grb2 #x1 #y1 #x2 #y2 #W #H → grb1' )
Replace a part of grb1 with a part of grb2 in OR mode.
2559C SubGxor ( grb1 grb2 #x1 #y1 #x2 #y2 #W #H → grb1' )
Replace a part of grb1 with a part of rgb2 in XOR mode.
25565 LineW ( grb #x1 #y1 #x2 #y2 → grb' )
Draw a white line.
2556F LineG1 ( grb #x1 #y1 #x2 #y2 → grb' )
Draw a light grey line.
25574 LineG2 ( grb #x1 #y1 #x2 #y2 → grb' )
Draw a dark grey line.
2556A LineB ( grb #x1 #y1 #x2 #y2 → grb' )
Draw a black line.
25579 LineXor ( grb #x1 #y1 #x2 #y2 → grb' )
XOR a line.
2F218 CircleW ( grb #Cx #Cy #r → grb' )
Draw a white circle.
2F216 CircleG1 ( grb #Cx #Cy #r → grb' )
Draw a light grey circle.
2F217 CircleG2 ( grb #Cx #Cy #r → grb' )
Draw a dark grey circle.
2F215 CircleB ( grb #Cx #Cy #r → grb' )
Draw a black circle
2F219 CircleXor ( grb #Cx #Cy #r → grb' )
XOR a circle.
2557E Sub ( grb #x1 #y1 #x2 #y2 → grb' flag )
Get a part of a grob.
25583 Repl ( grb1 grb2 #x #y → grb1' )
Copy grb2 into grb1 in REPLACE mode.
25588 Gor ( grb1 grb2 #x #y → grb1' )
Copy grb2 into grb1 in OR mode.
2558D Gxor ( grb1 grb2 #x #y → grb1' )
Copy grb2 into grb1 in XOR mode.
255A1 Grey? ( grob → flag )
Is grob a Greyscale Grob?
255B0 ScrollVGrob ( grb #W #X #Yd #Ys #h → grb' )
Scroll up and down a portion of a graphical object.
255BA PixonW ( grb #x #y → grb' )
Make a pixel white.
255C4 PixonG1 ( grb #x #y → grb' )
Make a pixel light grey.
255C9 PixonG2 ( grb #x #y → grb' )
Make a pixel dark grey.
255BF PixonB ( grb #x #y → grb' )
Make a pixel black.
255CE PixonXor ( grb #x #y → grb' )
Apply XOR to a pixel.
255D3 FBoxW ( grb #x1 #y1 #x2 #y2 → grb' )
Make a white filled rectangle.
255D3 FBoxG1 ( grb #x1 #y1 #x2 #y2 → grb' )
Make a light grey filled rectangle.
255D8 FBoxG2 ( grb #x1 #y1 #x2 #y2 → grb' )
Make a dark grey filled rectangle.
255DD FBoxB ( grb #x1 #y1 #x2 #y2 → grb' )
Make a black filled rectangle.
255E2 FBoxXor ( grb #x1 #y1 #x2 #y2 → grb' )
Apply XOR to a filled rectangle.
255E7 LBoxW ( grb #x1 #y1 #x2 #y2 → grb' )
Draw a white rectangle.
255EC LBoxG1 ( grb #x1 #y1 #x2 #y2 → grb' )
Draw a light grey rectangle.
255F1 LBoxG2 ( grb #x1 #y1 #x2 #y2 → grb' )
Draw a dark grey rectangle.
255F6 LBoxB ( grb #x1 #y1 #x2 #y2 → grb' )
Draw a black rectangle.
255FB LBoxXor ( grb #x1 #y1 #x2 #y2 → grb' )
Apply XOR to a rectangle.
2F21B ToGray ( grb → grb'/grb )
Convert a B&W grob to Greyscale.
2F21A Dither ( grb → grb'/grb )
Convert a greyscale grob to B&W
255B5 Distance ( #Δx #Δy → #SQRT(Δx^2+Δy^2) )
Compute the distance between two points.


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This document was generated by Carsten Dominik on May, 30 2005 using texi2html