xref: /aosp_15_r20/external/skia/docs/examples/Point_scale.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_scale, 256, 256, 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     SkPoint point = {40, -15}, scaled;
9*c8dee2aaSAndroid Build Coastguard Worker     SkPoint origin = {30, 110};
10*c8dee2aaSAndroid Build Coastguard Worker     for (auto scale : {1, 2, 3, 5}) {
11*c8dee2aaSAndroid Build Coastguard Worker         paint.setStrokeWidth(scale * 5);
12*c8dee2aaSAndroid Build Coastguard Worker         paint.setARGB(0x7f, 0x9f, 0xbf, 0x33 * scale);
13*c8dee2aaSAndroid Build Coastguard Worker         point.scale(scale, &scaled);
14*c8dee2aaSAndroid Build Coastguard Worker         canvas->drawLine(origin, origin + scaled, paint);
15*c8dee2aaSAndroid Build Coastguard Worker     }
16*c8dee2aaSAndroid Build Coastguard Worker }
17*c8dee2aaSAndroid Build Coastguard Worker }  // END FIDDLE
18