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
5REG_FIDDLE(IPoint_subtract_operator, 256, 64, false, 0) {
6void 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