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=d84fce292d86c7d9ef37ae2d179c03c7
5REG_FIDDLE(Point_normalize_2, 256, 256, false, 0) {
6void draw(SkCanvas* canvas) {
7    SkPaint paint;
8    paint.setAntiAlias(true);
9    const SkPoint lines[][2] = { {{  30, 110 }, { 190,  30 }},
10                                 {{ 120, 140 }, {  30, 220 }}};
11    for (auto line : lines) {
12        canvas->drawLine(line[0], line[1], paint);
13        SkVector vector = line[1] - line[0];
14        if (vector.normalize()) {
15            SkVector rotate90 = { -vector.fY, vector.fX };
16            rotate90 *= 10.f;
17            canvas->drawLine(line[0] - rotate90, line[0] + rotate90, paint);
18            canvas->drawLine(line[1] - rotate90, line[1] + rotate90, paint);
19        }
20    }
21}
22}  // END FIDDLE
23