xref: /third_party/skia/docs/examples/Path_getPoints.cpp (revision cb93a386)
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1cb93a386Sopenharmony_ci// Copyright 2019 Google LLC.
2cb93a386Sopenharmony_ci// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3cb93a386Sopenharmony_ci#include "tools/fiddle/examples.h"
4cb93a386Sopenharmony_ci// HASH=9bc86efda08cbcd9c6f7c5f220294a24
5cb93a386Sopenharmony_ciREG_FIDDLE(Path_getPoints, 256, 256, true, 0) {
6cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) {
7cb93a386Sopenharmony_ci    auto debugster = [](const char* prefix, const SkPath& path, SkPoint* points, int max) -> void {
8cb93a386Sopenharmony_ci         int count = path.getPoints(points, max);
9cb93a386Sopenharmony_ci         SkDebugf("%s point count: %d  ", prefix, count);
10cb93a386Sopenharmony_ci         for (int i = 0; i < std::min(count, max) && points; ++i) {
11cb93a386Sopenharmony_ci             SkDebugf("(%1.8g,%1.8g) ", points[i].fX, points[i].fY);
12cb93a386Sopenharmony_ci         }
13cb93a386Sopenharmony_ci         SkDebugf("\n");
14cb93a386Sopenharmony_ci    };
15cb93a386Sopenharmony_ci    SkPath path;
16cb93a386Sopenharmony_ci    path.lineTo(20, 20);
17cb93a386Sopenharmony_ci    path.lineTo(-10, -10);
18cb93a386Sopenharmony_ci    SkPoint points[3];
19cb93a386Sopenharmony_ci    debugster("no points",  path, nullptr, 0);
20cb93a386Sopenharmony_ci    debugster("zero max",  path, points, 0);
21cb93a386Sopenharmony_ci    debugster("too small",  path, points, 2);
22cb93a386Sopenharmony_ci    debugster("just right",  path, points, path.countPoints());
23cb93a386Sopenharmony_ci}
24cb93a386Sopenharmony_ci}  // END FIDDLE
25

Indexes created Thu Nov 07 10:32:03 CST 2024