|  | // 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=918a9778c3d7d5cb306692784399f6dc | 
|  | REG_FIDDLE(Matrix_mapVectors, 256, 256, false, 0) { | 
|  | void draw(SkCanvas* canvas) { | 
|  | SkPaint paint; | 
|  | paint.setAntiAlias(true); | 
|  | paint.setStyle(SkPaint::kStroke_Style); | 
|  | SkMatrix matrix; | 
|  | matrix.reset(); | 
|  | const SkVector radii[] = {{8, 4}, {9, 1}, {6, 2}, {7, 3}}; | 
|  | for (int i = 0; i < 4; ++i) { | 
|  | SkVector rScaled[4]; | 
|  | matrix.preScale(1.5f, 2.f); | 
|  | matrix.mapVectors(rScaled, radii, std::size(radii)); | 
|  | SkRRect rrect; | 
|  | rrect.setRectRadii({20, 20, 180, 70}, rScaled); | 
|  | canvas->drawRRect(rrect, paint); | 
|  | canvas->translate(0, 60); | 
|  | } | 
|  | } | 
|  | }  // END FIDDLE |