thorvg/examples/EffectGaussianBlur.cpp
2024-12-04 22:31:37 +09:00

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2.9 KiB
C++

/*
* Copyright (c) 2024 the ThorVG project. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include "Example.h"
/************************************************************************/
/* ThorVG Drawing Contents */
/************************************************************************/
struct UserExample : tvgexam::Example
{
tvg::Scene* scene[3] = {nullptr, nullptr, nullptr}; //(for direction both, horizontal, vertical)
bool content(tvg::Canvas* canvas, uint32_t w, uint32_t h) override
{
if (!canvas) return false;
for (int i = 0; i < 3; ++i) {
scene[i] = tvg::Scene::gen();
auto picture = tvg::Picture::gen();
picture->load(EXAMPLE_DIR"/svg/tiger.svg");
picture->size(w / 3, h);
picture->translate((w / 3) * i, 0);
scene[i]->push(picture);
canvas->push(scene[i]);
}
return true;
}
bool update(tvg::Canvas* canvas, uint32_t elapsed) override
{
if (!canvas) return false;
canvas->clear(false);
auto progress = tvgexam::progress(elapsed, 2.5f, true); //2.5 seconds
for (int i = 0; i < 3; ++i) {
//Clear the previously applied effects
scene[i]->push(tvg::SceneEffect::ClearAll);
//Apply GaussianBlur post effect (sigma, direction, border option, quality)
scene[i]->push(tvg::SceneEffect::GaussianBlur, 10.0f * progress, i, 0, 100);
}
canvas->update();
return true;
}
};
/************************************************************************/
/* Entry Point */
/************************************************************************/
int main(int argc, char **argv)
{
return tvgexam::main(new UserExample, argc, argv, 1200, 400, 4, true);
}