1cb93a386Sopenharmony_ci// Copyright 2019 Google LLC. 2cb93a386Sopenharmony_ci// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. 3cb93a386Sopenharmony_ci#include "tools/fiddle/examples.h" 4cb93a386Sopenharmony_ci// HASH=b1ead09c67a177ab8eace12b061610a7 5cb93a386Sopenharmony_ciREG_FIDDLE(Matrix_mapXY_2, 256, 256, false, 4) { 6cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) { 7cb93a386Sopenharmony_ci SkMatrix matrix; 8cb93a386Sopenharmony_ci SkPoint bitmapBounds[4], perspect[4] = {{50, 10}, {180, 40}, {236, 176}, {30, 206}}; 9cb93a386Sopenharmony_ci SkRect::Make(source.bounds()).toQuad(bitmapBounds); 10cb93a386Sopenharmony_ci matrix.setPolyToPoly(bitmapBounds, perspect, 4); 11cb93a386Sopenharmony_ci SkPaint paint; 12cb93a386Sopenharmony_ci paint.setAntiAlias(true); 13cb93a386Sopenharmony_ci paint.setStrokeWidth(3); 14cb93a386Sopenharmony_ci for (int x : { 0, source.width() } ) { 15cb93a386Sopenharmony_ci for (int y : { 0, source.height() } ) { 16cb93a386Sopenharmony_ci canvas->drawPoint(matrix.mapXY(x, y), paint); 17cb93a386Sopenharmony_ci } 18cb93a386Sopenharmony_ci } 19cb93a386Sopenharmony_ci canvas->concat(matrix); 20cb93a386Sopenharmony_ci canvas->drawImage(image, 0, 0); 21cb93a386Sopenharmony_ci} 22cb93a386Sopenharmony_ci} // END FIDDLE 23