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| author | David Thompson <dthompson2@worcester.edu> | 2021-09-22 07:29:32 -0400 |
|---|---|---|
| committer | David Thompson <dthompson2@worcester.edu> | 2021-09-22 07:30:57 -0400 |
| commit | d297c59ce2538b2f88d808346e8b9bbea2848e7d (patch) | |
| tree | 6c4d91059efacfc0561fec346ecf2ad7f19e5c89 | |
| parent | 7a2b8a54b9e637bc1ee3f13f567f1676089ef835 (diff) | |
graphics: path: Add square-limit procedure.
| -rw-r--r-- | chickadee/graphics/path.scm | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/chickadee/graphics/path.scm b/chickadee/graphics/path.scm index 83b50bf..ee501ce 100644 --- a/chickadee/graphics/path.scm +++ b/chickadee/graphics/path.scm @@ -88,6 +88,7 @@ right-split up-split corner-split + square-limit painter? painter-bounding-box make-empty-canvas @@ -1503,6 +1504,17 @@ (below (below right-small right-small) (corner-split smaller (- n 1))))))) +(define (square-limit painter n) + (if (<= n 0) + painter + (let* ((smaller (scale 0.5 painter)) + (split (corner-split smaller n)) + (flipped (vertical-flip split))) + (below (beside (rotate pi split) + (horizontal-flip (rotate pi split))) + (beside (horizontal-flip split) + split))))) + (define-record-type <canvas> (%make-canvas matrix compiled-path filled-path-pool stroked-path-pool tesselated-paths) |