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