Point_DotProduct.cpp 1.0 KB

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  1. #if 0 // Disabled until updated to use current API.
  2. // Copyright 2019 Google LLC.
  3. // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
  4. #include "tools/fiddle/examples.h"
  5. // HASH=496db0131a003162faba7d7f98b30340
  6. REG_FIDDLE(Point_DotProduct, 256, 256, false, 0) {
  7. void draw(SkCanvas* canvas) {
  8. SkPaint paint;
  9. paint.setAntiAlias(true);
  10. SkVector vectors[][2] = {{{50, 2}, {-14, 20}}, {{0, 50}, {-50, 0}}, {{-20, 25}, {25, -20}},
  11. {{-20, -24}, {-24, -20}}};
  12. SkPoint center[] = {{32, 32}, {160, 32}, {32, 160}, {160, 160}};
  13. paint.setStrokeWidth(2);
  14. for (size_t i = 0; i < 4; ++i) {
  15. canvas->drawLine(center[i], center[i] + vectors[i][0], paint);
  16. canvas->drawLine(center[i], center[i] + vectors[i][1], paint);
  17. SkString str;
  18. str.printf("dot = %g", SkPoint::DotProduct(vectors[i][0], vectors[i][1]));
  19. canvas->drawString(str, center[i].fX, center[i].fY, paint);
  20. }
  21. }
  22. } // END FIDDLE
  23. #endif // Disabled until updated to use current API.