| // Copyright 2019 Google LLC. |
| // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. |
| #include "tools/fiddle/examples.h" |
| // HASH=139b874da0a3ede1f3df88119085c0aa |
| REG_FIDDLE(Matrix_decomposeScale, 256, 256, true, 0) { |
| void draw(SkCanvas* canvas) { |
| SkMatrix matrix; |
| matrix.setRotate(90 * SK_Scalar1); |
| matrix.postScale(1.f / 4, 1.f / 2); |
| matrix.dump(); |
| SkSize scale = {SK_ScalarNaN, SK_ScalarNaN}; |
| SkMatrix remaining; |
| remaining.reset(); |
| bool success = matrix.decomposeScale(&scale, &remaining); |
| SkDebugf("success: %s ", success ? "true" : "false"); |
| SkDebugf("scale: %g, %g\n", scale.width(), scale.height()); |
| remaining.dump(); |
| SkMatrix scaleMatrix = SkMatrix::MakeScale(scale.width(), scale.height()); |
| SkMatrix combined = SkMatrix::Concat(scaleMatrix, remaining); |
| combined.dump(); |
| } |
| } // END FIDDLE |
