xref: /aosp_15_r20/external/skia/docs/examples/Matrix_setAffine.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
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 REG_FIDDLE(Matrix_setAffine, 256, 256, true, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     SkMatrix matrix;
7     matrix.setAll(2, 3, 4, 5, 6, 7, 0, 0, 1);
8     SkScalar affine[6];
9     if (matrix.asAffine(affine)) {
10         const char* names[] = { "ScaleX", "SkewY", "SkewX", "ScaleY", "TransX", "TransY" };
11         for (int i = 0; i < 6; ++i) {
12             SkDebugf("%s: %g ", names[i], affine[i]);
13         }
14         SkDebugf("\n");
15         matrix.reset();
16         matrix.setAffine(affine);
17         matrix.dump();
18     }
19 }
20 }  // END FIDDLE
21