mirror of
https://github.com/thorvg/thorvg.git
synced 2025-06-07 21:23:32 +00:00
4e64804839
just changed the size to another one for better showcase since 800x800 is not preferred by intel arc chipset. animations look stutter.
97 lines
No EOL
3 KiB
C++
97 lines
No EOL
3 KiB
C++
/*
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* Copyright (c) 2024 - 2025 the ThorVG project. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#define _USE_MATH_DEFINES
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#include <cmath>
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#include "Example.h"
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/************************************************************************/
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/* ThorVG Drawing Contents */
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/************************************************************************/
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struct UserExample : tvgexam::Example
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{
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tvg::Picture* picture = nullptr;
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float deg2rad(float degree)
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{
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return degree * (float(M_PI) / 180.0f);
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}
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bool content(tvg::Canvas* canvas, uint32_t w, uint32_t h) override
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{
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if (!canvas) return false;
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picture = tvg::Picture::gen();
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if (!tvgexam::verify(picture->load(EXAMPLE_DIR"/image/scale.jpg"))) return false;
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canvas->push(picture);
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return true;
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}
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bool update(tvg::Canvas* canvas, uint32_t elapsed) override
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{
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if (!canvas) return false;
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tvg::Matrix m = {1.0f, 0.0f, 0.0f, 0.0f, 0.1f, 0.0f, 0.0f, 0.0f, 1.0f};
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//center pivoting
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m.e13 += 480;
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m.e23 += 480;
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//rotation
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auto degree = tvgexam::progress(elapsed, 4.0f) * 360.0f;
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auto radian = deg2rad(degree);
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m.e11 = cosf(radian);
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m.e12 = -sinf(radian);
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m.e21 = sinf(radian);
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m.e22 = cosf(radian);
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//scaling
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m.e11 *= 0.8f;
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m.e21 *= 0.8f;
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m.e22 *= 0.8f;
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m.e12 *= 0.8f;
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//center pivoting
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m.e13 += (-400 * m.e11 + -400 * m.e12);
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m.e23 += (-400 * m.e21 + -400 * m.e22);
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picture->transform(m);
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canvas->update();
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return true;
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}
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};
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/************************************************************************/
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/* Entry Point */
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/************************************************************************/
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int main(int argc, char **argv)
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{
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return tvgexam::main(new UserExample, argc, argv, true, 960 ,960);
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} |