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 REG_FIDDLE(Path_IsCubicDegenerate, 256, 256, true, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6 SkPoint points[] = {{1, 0}, {0, 0}, {0, 0}, {0, 0}};
7 SkScalar step = 1;
8 SkScalar prior, length = 0, degenerate = 0;
9 do {
10 prior = points[0].fX;
11 step /= 2;
12 if (SkPath::IsCubicDegenerate(points[0], points[1], points[2], points[3], false)) {
13 degenerate = prior;
14 points[0].fX += step;
15 } else {
16 length = prior;
17 points[0].fX -= step;
18 }
19 } while (prior != points[0].fX);
20 SkDebugf("%1.8g is degenerate\n", degenerate);
21 SkDebugf("%1.8g is length\n", length);
22 }
23 } // END FIDDLE
24