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- // 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=39016b3cfc6bbabb09348a53822ce508
- REG_FIDDLE(Matrix_cheapEqualTo, 256, 256, true, 0) {
- void draw(SkCanvas* canvas) {
- auto debugster = [](const char* prefix, const SkMatrix& a, const SkMatrix& b) -> void {
- SkDebugf("%s: a %c= b a.cheapEqualTo(b): %s\n", prefix,
- a == b ? '=' : '!', a.cheapEqualTo(b) ? "true" : "false");
- };
- SkMatrix a, b;
- a.setAll(1, 0, 0, 0, 1, 0, 0, 0, 1);
- b.setIdentity();
- debugster("identity", a, b);
- a.setAll(1, -0.0f, 0, 0, 1, 0, 0, 0, 1);
- debugster("neg zero", a, b);
- a.setAll(1, SK_ScalarNaN, 0, 0, 1, 0, 0, 0, 1);
- debugster(" one NaN", a, b);
- b.setAll(1, SK_ScalarNaN, 0, 0, 1, 0, 0, 0, 1);
- debugster("both NaN", a, b);
- }
- } // END FIDDLE
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