| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 1 | // Copyright 2019 Google LLC. |
| 2 | // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. |
| Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 3 | #include "tools/fiddle/examples.h" |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 4 | // HASH=39016b3cfc6bbabb09348a53822ce508 |
| Hal Canary | a7181e7c | 2019-03-18 16:06:34 -0400 | [diff] [blame] | 5 | REG_FIDDLE(Matrix_cheapEqualTo, 256, 256, true, 0) { |
| Hal Canary | 8751512 | 2019-03-15 14:22:51 -0400 | [diff] [blame] | 6 | void draw(SkCanvas* canvas) { |
| 7 | auto debugster = [](const char* prefix, const SkMatrix& a, const SkMatrix& b) -> void { |
| 8 | SkDebugf("%s: a %c= b a.cheapEqualTo(b): %s\n", prefix, |
| 9 | a == b ? '=' : '!', a.cheapEqualTo(b) ? "true" : "false"); |
| 10 | }; |
| 11 | SkMatrix a, b; |
| 12 | a.setAll(1, 0, 0, 0, 1, 0, 0, 0, 1); |
| 13 | b.setIdentity(); |
| 14 | debugster("identity", a, b); |
| 15 | a.setAll(1, -0.0f, 0, 0, 1, 0, 0, 0, 1); |
| 16 | debugster("neg zero", a, b); |
| 17 | a.setAll(1, SK_ScalarNaN, 0, 0, 1, 0, 0, 0, 1); |
| 18 | debugster(" one NaN", a, b); |
| 19 | b.setAll(1, SK_ScalarNaN, 0, 0, 1, 0, 0, 0, 1); |
| 20 | debugster("both NaN", a, b); |
| 21 | } |
| 22 | } // END FIDDLE |