xref: /aosp_15_r20/external/skia/docs/examples/Matrix_getMinMaxScales.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
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.
3 #include "tools/fiddle/examples.h"
4 REG_FIDDLE(Matrix_getMinMaxScales, 256, 256, true, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     SkMatrix matrix;
7     matrix.setAll(1, 0, 0,  0, 1, 0,   0, 0, 0);
8     if (matrix.invert(&matrix)) {
9         SkScalar factor[2] = {2, 2};
10         bool result = matrix.getMinMaxScales(factor);
11         SkDebugf("matrix.getMinMaxScales() %s %g %g\n",
12                 result ? "true" : "false", factor[0], factor[1]);
13     }
14 }
15 }  // END FIDDLE
16