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=e626e26bf557857b824aa7d03f723e0f 5cb93a386Sopenharmony_ciREG_FIDDLE(IPoint_subtract_operator, 256, 64, false, 0) { 6cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) { 7cb93a386Sopenharmony_ci auto draw_lines = [=](const SkIPoint pts[], size_t count, SkPaint& paint) -> void { 8cb93a386Sopenharmony_ci for (size_t i = 0; i < count - 1; ++i) { 9cb93a386Sopenharmony_ci SkPoint p0, p1; 10cb93a386Sopenharmony_ci p0.iset(pts[i]); 11cb93a386Sopenharmony_ci p1.iset(pts[i + 1]); 12cb93a386Sopenharmony_ci canvas->drawLine(p0, p1, paint); 13cb93a386Sopenharmony_ci } 14cb93a386Sopenharmony_ci }; 15cb93a386Sopenharmony_ci SkIPoint points[] = { { 3, 1 }, { 4, 2 }, { 5, 1 }, { 7, 3 } }; 16cb93a386Sopenharmony_ci SkPaint paint; 17cb93a386Sopenharmony_ci paint.setAntiAlias(true); 18cb93a386Sopenharmony_ci paint.setStyle(SkPaint::kStroke_Style); 19cb93a386Sopenharmony_ci canvas->scale(30, 15); 20cb93a386Sopenharmony_ci draw_lines(points, SK_ARRAY_COUNT(points), paint); 21cb93a386Sopenharmony_ci points[1] += points[0] - points[3]; 22cb93a386Sopenharmony_ci points[2] -= points[1] - points[0]; 23cb93a386Sopenharmony_ci paint.setColor(SK_ColorRED); 24cb93a386Sopenharmony_ci draw_lines(points, SK_ARRAY_COUNT(points), paint); 25cb93a386Sopenharmony_ci} 26cb93a386Sopenharmony_ci} // END FIDDLE 27