xref: /aosp_15_r20/external/skia/docs/examples/Path_IsLineDegenerate.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
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_IsLineDegenerate, 256, 256, true, 0) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     SkPoint points[] = { {100, 100}, {100.000001f, 100.000001f}, {100.0001f, 100.0001f} };
7     for (size_t i = 0; i < std::size(points) - 1; ++i) {
8         for (bool exact : { false, true } ) {
9             SkDebugf("line from (%1.8g,%1.8g) to (%1.8g,%1.8g) is %s" "degenerate, %s\n",
10                     points[i].fX, points[i].fY, points[i + 1].fX, points[i + 1].fY,
11                     SkPath::IsLineDegenerate(points[i], points[i + 1], exact)
12                     ? "" : "not ", exact ? "exactly" : "nearly");
13         }
14     }
15 }
16 }  // END FIDDLE
17