xref: /aosp_15_r20/external/skia/docs/examples/Matrix_postTranslate.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2019 Google LLC.
2*c8dee2aaSAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3*c8dee2aaSAndroid Build Coastguard Worker #include "tools/fiddle/examples.h"
4*c8dee2aaSAndroid Build Coastguard Worker REG_FIDDLE(Matrix_postTranslate, 256, 160, false, 0) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
7*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
8*c8dee2aaSAndroid Build Coastguard Worker     SkRect rect = {20, 20, 100, 100};
9*c8dee2aaSAndroid Build Coastguard Worker     for (int i = 0; i < 2; ++i ) {
10*c8dee2aaSAndroid Build Coastguard Worker         SkMatrix matrix;
11*c8dee2aaSAndroid Build Coastguard Worker         i == 0 ? matrix.reset(): matrix.setRotate(25, rect.centerX(), 320);
12*c8dee2aaSAndroid Build Coastguard Worker         {
13*c8dee2aaSAndroid Build Coastguard Worker             SkAutoCanvasRestore acr(canvas, true);
14*c8dee2aaSAndroid Build Coastguard Worker             canvas->concat(matrix);
15*c8dee2aaSAndroid Build Coastguard Worker             paint.setColor(SK_ColorGRAY);
16*c8dee2aaSAndroid Build Coastguard Worker             canvas->drawRect(rect, paint);
17*c8dee2aaSAndroid Build Coastguard Worker         }
18*c8dee2aaSAndroid Build Coastguard Worker         paint.setColor(SK_ColorRED);
19*c8dee2aaSAndroid Build Coastguard Worker         for (int j = 0; j < 2; ++j ) {
20*c8dee2aaSAndroid Build Coastguard Worker             SkAutoCanvasRestore acr(canvas, true);
21*c8dee2aaSAndroid Build Coastguard Worker             matrix.postTranslate(40, 40);
22*c8dee2aaSAndroid Build Coastguard Worker             canvas->concat(matrix);
23*c8dee2aaSAndroid Build Coastguard Worker             canvas->drawCircle(0, 0, 3, paint);
24*c8dee2aaSAndroid Build Coastguard Worker         }
25*c8dee2aaSAndroid Build Coastguard Worker     }
26*c8dee2aaSAndroid Build Coastguard Worker }
27*c8dee2aaSAndroid Build Coastguard Worker }  // END FIDDLE
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