xref: /aosp_15_r20/external/skia/docs/examples/Path_getPoints.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
1*c8dee2aaSAndroid Build Coastguard Worker // Copyright 2019 Google LLC.
2*c8dee2aaSAndroid Build Coastguard Worker // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
3*c8dee2aaSAndroid Build Coastguard Worker #include "tools/fiddle/examples.h"
4*c8dee2aaSAndroid Build Coastguard Worker REG_FIDDLE(Path_getPoints, 256, 256, true, 0) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker     auto debugster = [](const char* prefix, const SkPath& path, SkPoint* points, int max) -> void {
7*c8dee2aaSAndroid Build Coastguard Worker          int count = path.getPoints(points, max);
8*c8dee2aaSAndroid Build Coastguard Worker          SkDebugf("%s point count: %d  ", prefix, count);
9*c8dee2aaSAndroid Build Coastguard Worker          for (int i = 0; i < std::min(count, max) && points; ++i) {
10*c8dee2aaSAndroid Build Coastguard Worker              SkDebugf("(%1.8g,%1.8g) ", points[i].fX, points[i].fY);
11*c8dee2aaSAndroid Build Coastguard Worker          }
12*c8dee2aaSAndroid Build Coastguard Worker          SkDebugf("\n");
13*c8dee2aaSAndroid Build Coastguard Worker     };
14*c8dee2aaSAndroid Build Coastguard Worker     SkPath path;
15*c8dee2aaSAndroid Build Coastguard Worker     path.lineTo(20, 20);
16*c8dee2aaSAndroid Build Coastguard Worker     path.lineTo(-10, -10);
17*c8dee2aaSAndroid Build Coastguard Worker     SkPoint points[3];
18*c8dee2aaSAndroid Build Coastguard Worker     debugster("no points",  path, nullptr, 0);
19*c8dee2aaSAndroid Build Coastguard Worker     debugster("zero max",  path, points, 0);
20*c8dee2aaSAndroid Build Coastguard Worker     debugster("too small",  path, points, 2);
21*c8dee2aaSAndroid Build Coastguard Worker     debugster("just right",  path, points, path.countPoints());
22*c8dee2aaSAndroid Build Coastguard Worker }
23*c8dee2aaSAndroid Build Coastguard Worker }  // END FIDDLE
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