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