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examples: added bounding box sample

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Hermet Park 2025-03-04 18:41:07 +09:00 • committed by Hermet Park
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170
examples/BoundingBox.cpp Normal file
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@ -0,0 +1,170 @@
/*
* Copyright (c) 2025 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
{
void bbox(tvg::Canvas* canvas, tvg::Paint* paint)
{
tvg::Point pts[4];
paint->bounds(pts);
auto bound = tvg::Shape::gen();
bound->moveTo(pts[0].x, pts[0].y);
bound->lineTo(pts[1].x, pts[1].y);
bound->lineTo(pts[2].x, pts[2].y);
bound->lineTo(pts[3].x, pts[3].y);
bound->close();
bound->strokeWidth(2.0f);
bound->strokeFill(255, 255, 0);
canvas->push(bound);
}
bool content(tvg::Canvas* canvas, uint32_t w, uint32_t h) override
{
if (!canvas) return false;
{
auto shape = tvg::Shape::gen();
shape->appendCircle(50, 100, 40, 100);
shape->fill(0, 30, 255);
canvas->push(shape);
bbox(canvas, shape);
}
{
auto shape = tvg::Shape::gen();
shape->appendRect(120, 70, 100, 20);
shape->fill(100, 250, 155);
canvas->push(shape);
bbox(canvas, shape);
}
{
auto shape = tvg::Shape::gen();
shape->appendRect(120, 170, 100, 20);
shape->fill(200, 150, 55);
shape->rotate(30);
canvas->push(shape);
bbox(canvas, shape);
}
{
auto shape = tvg::Shape::gen();
shape->appendRect(450, 50, 150, 100, 40, 50);
shape->appendCircle(550, 300, 200, 100);
shape->fill(50, 50, 155);
canvas->push(shape);
bbox(canvas, shape);
}
{
auto svg = tvg::Picture::gen();
svg->load(EXAMPLE_DIR"/svg/tiger.svg");
svg->scale(0.3f);
svg->translate(500, 500);
canvas->push(svg);
bbox(canvas, svg);
}
{
auto svg = tvg::Picture::gen();
svg->load(EXAMPLE_DIR"/svg/tiger.svg");
svg->scale(0.2f);
svg->translate(170, 300);
svg->rotate(45);
canvas->push(svg);
bbox(canvas, svg);
}
{
auto img = tvg::Picture::gen();
img->load(EXAMPLE_DIR"/image/test.png");
img->scale(0.3f);
img->translate(150, 100);
canvas->push(img);
bbox(canvas, img);
}
{
auto img = tvg::Picture::gen();
img->load(EXAMPLE_DIR"/image/test.jpg");
img->scale(0.3f);
img->rotate(80);
img->translate(200, 600);
canvas->push(img);
bbox(canvas, img);
}
{
auto line = tvg::Shape::gen();
line->moveTo(400, 450);
line->lineTo(700, 450);
line->strokeWidth(20);
line->strokeFill(55, 55, 0);
canvas->push(line);
bbox(canvas, line);
}
{
auto curve = tvg::Shape::gen();
curve->moveTo(0, 0);
curve->cubicTo(40.0f, -10.0f, 120.0f, -150.0f, 80.0f, 0.0f);
curve->translate(250, 700);
curve->strokeWidth(2.0f);
curve->strokeFill(255, 255, 255);
canvas->push(curve);
bbox(canvas, curve);
}
{
auto curve = tvg::Shape::gen();
curve->moveTo(0, 0);
curve->cubicTo(40.0f, -10.0f, 120.0f, -150.0f, 80.0f, 0.0f);
curve->translate(350, 700);
curve->rotate(20.0f);
curve->strokeWidth(2.0f);
curve->strokeFill(255, 0, 255);
canvas->push(curve);
bbox(canvas, curve);
}
return true;
}
};
/************************************************************************/
/* Entry Point */
/************************************************************************/
int main(int argc, char **argv)
{
return tvgexam::main(new UserExample, argc, argv);
}

1
examples/meson.build
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@ -24,6 +24,7 @@ source_file = [
'AnimateMasking.cpp',
'Animation.cpp',
'Blending.cpp',
'BoundingBox.cpp',
'Clipping.cpp',
'CustomTransform.cpp',
'DataLoad.cpp',