mirror of
https://github.com/thorvg/thorvg.git
synced 2025-07-26 08:09:14 +00:00
7730f8ba8b
The stroke bounding box in ThorVG was previously only approximated, as the stroke transformation was mistakenly omitted. This has now been enhanced. The stroke join/corner is still not taken into account in the bounding box computation...
303 lines
No EOL
9 KiB
C++
303 lines
No EOL
9 KiB
C++
/*
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* Copyright (c) 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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#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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void bbox(tvg::Canvas* canvas, tvg::Paint* paint)
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{
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//aabb
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{
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float x, y, w, h;
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paint->bounds(&x, &y, &w, &h);
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auto bound = tvg::Shape::gen();
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bound->moveTo(x, y);
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bound->lineTo(x + w, y);
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bound->lineTo(x + w, y + h);
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bound->lineTo(x, y + h);
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bound->close();
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bound->strokeWidth(2.0f);
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bound->strokeFill(255, 0, 0, 255);
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canvas->push(bound);
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}
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//obb
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{
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tvg::Point pts[4];
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paint->bounds(pts);
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auto bound = tvg::Shape::gen();
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bound->moveTo(pts[0].x, pts[0].y);
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bound->lineTo(pts[1].x, pts[1].y);
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bound->lineTo(pts[2].x, pts[2].y);
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bound->lineTo(pts[3].x, pts[3].y);
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bound->close();
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bound->strokeWidth(2.0f);
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float dash[] = {3.0f, 10.0f};
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bound->strokeDash(dash, 2);
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bound->strokeFill(255, 255, 255, 255);
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canvas->push(bound);
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}
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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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{
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auto shape = tvg::Shape::gen();
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shape->appendCircle(50, 100, 40, 100);
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shape->fill(0, 30, 255);
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canvas->push(shape);
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bbox(canvas, shape);
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}
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{
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if (!tvgexam::verify(tvg::Text::load(EXAMPLE_DIR"/font/Arial.ttf"))) return false;
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auto text = tvg::Text::gen();
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text->font("Arial", 30);
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text->text("Text Test");
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text->fill(255, 255, 0);
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text->translate(100, 20);
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text->rotate(16.0f);
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canvas->push(text);
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bbox(canvas, text);
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}
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{
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auto shape = tvg::Shape::gen();
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shape->appendRect(200, 30, 100, 20);
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shape->fill(200, 150, 55);
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shape->rotate(30);
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canvas->push(shape);
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bbox(canvas, shape);
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}
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{
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auto shape = tvg::Shape::gen();
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shape->appendRect(225, -50, 75, 50, 20, 25);
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shape->appendCircle(225, 25, 50, 25);
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shape->strokeWidth(10);
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shape->strokeFill(255, 255, 255);
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shape->fill(50, 50, 155);
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tvg::Matrix m = {1.732f, -1.0f, 30.0f, 1.0f, 1.732f, -70.0f, 0.0f, 0.0f, 1.0f};
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shape->transform(m);
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canvas->push(shape);
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bbox(canvas, shape);
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}
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{
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auto svg = tvg::Picture::gen();
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svg->load(EXAMPLE_DIR"/svg/tiger.svg");
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svg->scale(0.3f);
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svg->translate(620, 50);
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canvas->push(svg);
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bbox(canvas, svg);
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}
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{
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auto svg = tvg::Picture::gen();
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svg->load(EXAMPLE_DIR"/svg/tiger.svg");
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svg->scale(0.2f);
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svg->translate(140, 215);
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svg->rotate(45);
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canvas->push(svg);
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bbox(canvas, svg);
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}
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{
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auto scene = tvg::Scene::gen();
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scene->scale(0.3f);
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scene->translate(280, 330);
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auto img = tvg::Picture::gen();
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img->load(EXAMPLE_DIR"/image/test.png");
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scene->push(img);
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canvas->push(scene);
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bbox(canvas, scene);
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}
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{
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auto scene = tvg::Scene::gen();
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scene->scale(0.3f);
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scene->rotate(80);
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scene->translate(200, 480);
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auto img = tvg::Picture::gen();
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img->load(EXAMPLE_DIR"/image/test.jpg");
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scene->push(img);
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canvas->push(scene);
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bbox(canvas, scene);
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}
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{
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auto line = tvg::Shape::gen();
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line->moveTo(470, 350);
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line->lineTo(770, 350);
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line->strokeWidth(20);
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line->strokeFill(55, 55, 0);
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canvas->push(line);
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bbox(canvas, line);
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}
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{
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auto curve = tvg::Shape::gen();
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curve->moveTo(0, 0);
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curve->cubicTo(40.0f, -10.0f, 120.0f, -150.0f, 80.0f, 0.0f);
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curve->translate(50, 770);
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curve->strokeWidth(2.0f);
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curve->strokeFill(255, 255, 255);
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canvas->push(curve);
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bbox(canvas, curve);
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}
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{
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auto curve = tvg::Shape::gen();
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curve->moveTo(0, 0);
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curve->cubicTo(40.0f, -10.0f, 120.0f, -150.0f, 80.0f, 0.0f);
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curve->translate(150, 750);
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curve->rotate(20.0f);
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curve->strokeWidth(2.0f);
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curve->strokeFill(255, 0, 255);
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canvas->push(curve);
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bbox(canvas, curve);
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}
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{
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auto scene = tvg::Scene::gen();
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scene->translate(550, 370);
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scene->scale(0.7f);
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auto shape = tvg::Shape::gen();
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shape->moveTo(0, 0);
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shape->lineTo(300, 200);
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shape->lineTo(0, 200);
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shape->fill(255, 0, 0);
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shape->close();
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shape->rotate(20);
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scene->push(shape);
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canvas->push(scene);
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bbox(canvas, scene);
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}
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{
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auto scene = tvg::Scene::gen();
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scene->translate(350, 590);
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scene->scale(0.7f);
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auto shape = tvg::Shape::gen();
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shape->moveTo(0, 0);
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shape->lineTo(300, 200);
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shape->lineTo(0, 200);
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shape->fill(0, 255, 0);
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shape->close();
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scene->push(shape);
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canvas->push(scene);
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bbox(canvas, scene);
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}
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{
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auto scene = tvg::Scene::gen();
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scene->translate(650, 590);
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scene->scale(0.7f);
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scene->rotate(20);
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auto shape = tvg::Shape::gen();
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shape->moveTo(0, 0);
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shape->lineTo(300, 200);
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shape->lineTo(0, 200);
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shape->fill(0, 255, 255);
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shape->close();
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scene->push(shape);
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canvas->push(scene);
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bbox(canvas, scene);
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}
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{
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auto scene = tvg::Scene::gen();
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scene->translate(790, 390);
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scene->scale(0.5f);
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scene->rotate(20);
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auto shape = tvg::Shape::gen();
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shape->moveTo(0, 0);
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shape->lineTo(150, 100);
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shape->lineTo(0, 100);
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shape->close();
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shape->fill(255, 0, 255);
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shape->strokeWidth(30);
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shape->strokeFill(0, 255, 255);
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shape->strokeJoin(tvg::StrokeJoin::Round);
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tvg::Matrix m = {1.8794f, -0.6840f, 0.0f, 0.6840f, 1.8794f, 0.0f, 0.0f, 0.0f, 1.0f};
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shape->transform(m);
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scene->push(shape);
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canvas->push(scene);
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bbox(canvas, scene);
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}
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{
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auto scene = tvg::Scene::gen();
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scene->translate(250, 490);
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scene->scale(0.7f);
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auto text = tvg::Text::gen();
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text->font("Arial", 50);
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text->text("Text Test");
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text->fill(255, 255, 0);
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text->translate(0, 0);
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text->rotate(16.0f);
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scene->push(text);
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canvas->push(scene);
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bbox(canvas, scene);
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}
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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, 900, 900);
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} |