Matrix_mapPoints_2.cpp 677 B

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  1. // Copyright 2019 Google LLC.
  2. // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
  3. #include "tools/fiddle/examples.h"
  4. // HASH=428ca171ae3bd0d3f992458ac598b97b
  5. REG_FIDDLE(Matrix_mapPoints_2, 256, 256, false, 0) {
  6. void draw(SkCanvas* canvas) {
  7. SkMatrix matrix;
  8. matrix.setRotate(35, 128, 128);
  9. const int count = 4;
  10. SkPoint pts[count];
  11. matrix.mapRectToQuad(pts, {40, 70, 180, 220} );
  12. SkPaint paint;
  13. paint.setARGB(77, 23, 99, 154);
  14. for (int i = 0; i < 5; ++i) {
  15. canvas->drawPoints(SkCanvas::kPolygon_PointMode, count, pts, paint);
  16. matrix.mapPoints(pts, count);
  17. }
  18. }
  19. } // END FIDDLE