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_mapRectToQuad, 256, 192, 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 SkMatrix matrix;
9*c8dee2aaSAndroid Build Coastguard Worker matrix.setRotate(60, 128, 128);
10*c8dee2aaSAndroid Build Coastguard Worker SkRect rect = {50, 50, 150, 150};
11*c8dee2aaSAndroid Build Coastguard Worker SkPoint pts[4];
12*c8dee2aaSAndroid Build Coastguard Worker matrix.mapRectToQuad(pts, rect);
13*c8dee2aaSAndroid Build Coastguard Worker for (int i = 0; i < 4; ++i) {
14*c8dee2aaSAndroid Build Coastguard Worker canvas->drawCircle(pts[i].fX, pts[i].fY, 3, paint);
15*c8dee2aaSAndroid Build Coastguard Worker }
16*c8dee2aaSAndroid Build Coastguard Worker canvas->concat(matrix);
17*c8dee2aaSAndroid Build Coastguard Worker paint.setStyle(SkPaint::kStroke_Style);
18*c8dee2aaSAndroid Build Coastguard Worker canvas->drawRect(rect, paint);
19*c8dee2aaSAndroid Build Coastguard Worker }
20*c8dee2aaSAndroid Build Coastguard Worker } // END FIDDLE
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