xref: /aosp_15_r20/external/skia/docs/examples/Point_setLength.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(Point_setLength, 256, 160, false, 0) {
draw(SkCanvas * canvas)5*c8dee2aaSAndroid Build Coastguard Worker void draw(SkCanvas* canvas) {
6*c8dee2aaSAndroid Build Coastguard Worker     SkPaint paint;
7*c8dee2aaSAndroid Build Coastguard Worker     paint.setAntiAlias(true);
8*c8dee2aaSAndroid Build Coastguard Worker     const SkPoint points[] = { { 60, -110 }, { 90, 10 }, { 120, -110 }, { 180, -50 } };
9*c8dee2aaSAndroid Build Coastguard Worker     const SkPoint origin = {0, 0};
10*c8dee2aaSAndroid Build Coastguard Worker     canvas->translate(30, 140);
11*c8dee2aaSAndroid Build Coastguard Worker     for (auto point : points) {
12*c8dee2aaSAndroid Build Coastguard Worker         paint.setStrokeWidth(1);
13*c8dee2aaSAndroid Build Coastguard Worker         paint.setColor(SK_ColorBLACK);
14*c8dee2aaSAndroid Build Coastguard Worker         canvas->drawLine(origin, point, paint);
15*c8dee2aaSAndroid Build Coastguard Worker         SkVector normal = point;
16*c8dee2aaSAndroid Build Coastguard Worker         normal.setLength(100);
17*c8dee2aaSAndroid Build Coastguard Worker         paint.setStrokeWidth(10);
18*c8dee2aaSAndroid Build Coastguard Worker         paint.setColor(0x3f45bf12);
19*c8dee2aaSAndroid Build Coastguard Worker         canvas->drawLine(origin, normal, paint);
20*c8dee2aaSAndroid Build Coastguard Worker     }
21*c8dee2aaSAndroid Build Coastguard Worker }
22*c8dee2aaSAndroid Build Coastguard Worker }  // END FIDDLE
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