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Matrix_decomposeScale.cpp 895 Bytes
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李想 提交于 2023-11-11 15:55 +08:00 . chromium 99.0.4844.88 4.0release init
// 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::Scale(scale.width(), scale.height());
SkMatrix combined = SkMatrix::Concat(scaleMatrix, remaining);
combined.dump();
}
} // END FIDDLE
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chromium_third_party_skia
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