xref: /third_party/skia/docs/examples/Matrix_mapVectors.cpp
  • Home
  • History
  • Annotate Annotate
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
  • only in /third_party/skia/docs/examples/
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=918a9778c3d7d5cb306692784399f6dc
5cb93a386Sopenharmony_ciREG_FIDDLE(Matrix_mapVectors, 256, 256, false, 0) {
6cb93a386Sopenharmony_civoid draw(SkCanvas* canvas) {
7cb93a386Sopenharmony_ci    SkPaint paint;
8cb93a386Sopenharmony_ci    paint.setAntiAlias(true);
9cb93a386Sopenharmony_ci    paint.setStyle(SkPaint::kStroke_Style);
10cb93a386Sopenharmony_ci    SkMatrix matrix;
11cb93a386Sopenharmony_ci    matrix.reset();
12cb93a386Sopenharmony_ci    const SkVector radii[] = {{8, 4}, {9, 1}, {6, 2}, {7, 3}};
13cb93a386Sopenharmony_ci    for (int i = 0; i < 4; ++i) {
14cb93a386Sopenharmony_ci        SkVector rScaled[4];
15cb93a386Sopenharmony_ci        matrix.preScale(1.5f, 2.f);
16cb93a386Sopenharmony_ci        matrix.mapVectors(rScaled, radii, SK_ARRAY_COUNT(radii));
17cb93a386Sopenharmony_ci        SkRRect rrect;
18cb93a386Sopenharmony_ci        rrect.setRectRadii({20, 20, 180, 70}, rScaled);
19cb93a386Sopenharmony_ci        canvas->drawRRect(rrect, paint);
20cb93a386Sopenharmony_ci        canvas->translate(0, 60);
21cb93a386Sopenharmony_ci    }
22cb93a386Sopenharmony_ci}
23cb93a386Sopenharmony_ci}  // END FIDDLE
24

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