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_decomposeScale, 256, 256, true, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6 SkMatrix matrix;
7 matrix.setRotate(90 * SK_Scalar1);
8 matrix.postScale(1.f / 4, 1.f / 2);
9 matrix.dump();
10 SkSize scale = {SK_ScalarNaN, SK_ScalarNaN};
11 SkMatrix remaining;
12 remaining.reset();
13 bool success = matrix.decomposeScale(&scale, &remaining);
14 SkDebugf("success: %s ", success ? "true" : "false");
15 SkDebugf("scale: %g, %g\n", scale.width(), scale.height());
16 remaining.dump();
17 SkMatrix scaleMatrix = SkMatrix::Scale(scale.width(), scale.height());
18 SkMatrix combined = SkMatrix::Concat(scaleMatrix, remaining);
19 combined.dump();
20 }
21 } // END FIDDLE
22