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=d56f93e4bc763c7ba4914321ed07a8b5 5cb93a386Sopenharmony_ciREG_FIDDLE(Matrix_mapHomogeneousPoints, 256, 256, false, 0) { 6cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) { 7cb93a386Sopenharmony_ci SkPoint3 src[] = {{3, 3, 1}, {8, 2, 2}, {5, 0, 4}, {0, 1, 3}, 8cb93a386Sopenharmony_ci {3, 7, 1}, {8, 6, 2}, {5, 4, 4}, {0, 5, 3}}; 9cb93a386Sopenharmony_ci int lines[] = { 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 }; 10cb93a386Sopenharmony_ci constexpr int count = SK_ARRAY_COUNT(src); 11cb93a386Sopenharmony_ci auto debugster = [=](SkPoint3 src[]) -> void { 12cb93a386Sopenharmony_ci for (size_t i = 0; i < SK_ARRAY_COUNT(lines); i += 2) { 13cb93a386Sopenharmony_ci const SkPoint3& s = src[lines[i]]; 14cb93a386Sopenharmony_ci const SkPoint3& e = src[lines[i + 1]]; 15cb93a386Sopenharmony_ci SkPaint paint; 16cb93a386Sopenharmony_ci paint.setARGB(77, 23, 99, 154); 17cb93a386Sopenharmony_ci canvas->drawLine(s.fX / s.fZ, s.fY / s.fZ, e.fX / e.fZ, e.fY / e.fZ, paint); 18cb93a386Sopenharmony_ci } 19cb93a386Sopenharmony_ci }; 20cb93a386Sopenharmony_ci canvas->save(); 21cb93a386Sopenharmony_ci canvas->translate(5, 5); 22cb93a386Sopenharmony_ci canvas->scale(15, 15); 23cb93a386Sopenharmony_ci debugster(src); 24cb93a386Sopenharmony_ci canvas->restore(); 25cb93a386Sopenharmony_ci canvas->translate(128, 128); 26cb93a386Sopenharmony_ci SkMatrix matrix; 27cb93a386Sopenharmony_ci matrix.setAll(15, 0, 0, 0, 15, 0, -0.08f, 0.04f, 1); 28cb93a386Sopenharmony_ci matrix.mapHomogeneousPoints(src, src, count); 29cb93a386Sopenharmony_ci debugster(src); 30cb93a386Sopenharmony_ci} 31cb93a386Sopenharmony_ci} // END FIDDLE 32