// 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