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=139b874da0a3ede1f3df88119085c0aa
5REG_FIDDLE(Matrix_decomposeScale, 256, 256, true, 0) {
6void draw(SkCanvas* canvas) {
7    SkMatrix matrix;
8    matrix.setRotate(90 * SK_Scalar1);
9    matrix.postScale(1.f / 4, 1.f / 2);
10    matrix.dump();
11    SkSize scale = {SK_ScalarNaN, SK_ScalarNaN};
12    SkMatrix remaining;
13    remaining.reset();
14    bool success = matrix.decomposeScale(&scale, &remaining);
15    SkDebugf("success: %s  ", success ? "true" : "false");
16    SkDebugf("scale: %g, %g\n", scale.width(), scale.height());
17    remaining.dump();
18    SkMatrix scaleMatrix = SkMatrix::Scale(scale.width(), scale.height());
19    SkMatrix combined = SkMatrix::Concat(scaleMatrix, remaining);
20    combined.dump();
21}
22}  // END FIDDLE
23