Line Pattern - r3n/rebol-wiki GitHub Wiki

Set the line pattern. The line pattern will remain in effect until it is set to a new value or disabled using off.

Arg	Type	Description	Values
dash-color	[tuple!]
stroke-size	[decimal!]
dash-size	[decimal!]
stroke-size	[decimal!]
dash-size	[decimal!]
...	[decimal!]

Notes and Examples

Set it to 5 of yellow and 5 of red.

anti-alias off pen yellow line-pattern red 5 5 line-width 3 box 20x20 200x200

To draw a dashed line, with a transparent pen, the off pen color must come first.

To clear the current line pattern, set it to off.

anti-alias off pen off line-width 4 line-pattern yellow 7 2 box 20x20 200x200 line-pattern off box 40x40 240x240 pen blue box 60x60 260x260

Complex patterns can be specified by repeating values for stroke and dash sizes

anti-alias off line-width 4 pen blue line-pattern red 7 2 4 4 3 6 box 20x20 380x380 pen red line-pattern yellow 1 5 box 40x40 360x360 line-pattern off box 60x60 340x340 line-pattern blue 10 20 40 80 box 80x80 320x320 line-pattern green 1 4 4 4 box 100x100 300x300 line-pattern yellow 4 8 12 16 box 120x120 280x280 line-pattern yellow 4 4 box 140x140 260x260