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 // HASH=199a18ad61d702664ce6df1d7037aa48 5 REG_FIDDLE(Matrix_preSkew, 256, 256, false, 3) { draw(SkCanvas * canvas)6 void draw(SkCanvas* canvas) { 7 SkMatrix matrix; 8 SkPoint bitmapBounds[4], perspect[4] = {{50, 10}, {180, 40}, {236, 176}, {10, 206}}; 9 SkRect::Make(image->bounds()).toQuad(bitmapBounds); 10 matrix.setPolyToPoly(bitmapBounds, perspect, 4); 11 matrix.preSkew(.5f, 0, image->width() / 2, image->height() / 2); 12 canvas->concat(matrix); 13 canvas->drawImage(image, 0, 0); 14 } 15 } // END FIDDLE 16