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| author | Cliff Click <cliffc@acm.org> | 2026-08-10 11:11:18 -0700 |
|---|---|---|
| committer | Cliff Click <cliffc@acm.org> | 2026-11-12 13:48:30 -0800 |
| commit | 7824fa044ac7d2db13af5873ce2e90365153e0be (patch) | |
| tree | 0795225a660a8bda2ae0b0bb6d7b013803c9775e /src/main/smp/sys/draw.smp | |
| parent | 2eb27046f9b2bca887fd9ea0a7c5a67547153ef3 (diff) | |
| download | Simple-linear-chapter31.tar.gz Simple-linear-chapter31.zip | |
Chapter 31: Software Drawing and Graphical Gameslinear-chapter31linear
Co-authored-by: Hsiang-Ying Fu <66062782+fuhsnn@users.noreply.github.com>
Co-authored-by: fuhsnn <66062782+fuhsnn@users.noreply.github.com>
Co-authored-by: Symious <14933944+symious@users.noreply.github.com>
Co-authored-by: Jun Kawasaki <jun784@gmail.com>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>
Diffstat (limited to 'src/main/smp/sys/draw.smp')
| -rw-r--r-- | src/main/smp/sys/draw.smp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/main/smp/sys/draw.smp b/src/main/smp/sys/draw.smp new file mode 100644 index 00000000..0721659a --- /dev/null +++ b/src/main/smp/sys/draw.smp @@ -0,0 +1,17 @@ +// Software raster drawing. No window or native calls; pixels are packed RGB (0x00RRGGBB). +u32 BLACK = 0x000000; +u32 WHITE = 0xffffff; +u32 RED = 0xe05252; +u32 GREEN = 0x48b88c; +u32 BLUE = 0x558ee6; + +// Components are clamped to bytes rather than wrapping. +val rgb = { int r, int g, int b -> + r = r<0 ? 0 : r>255 ? 255 : r; + g = g<0 ? 0 : g>255 ? 255 : g; + b = b<0 ? 0 : b>255 ? 255 : b; + u32 color = (r<<16) | (g<<8) | b; + return color; +}; + +val Canvas = Canvas; // Pixel canvas and drawing methods |