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285 lines
9 KiB
C++
285 lines
9 KiB
C++
/*
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* Copyright (c) 2021 - 2023 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 <iostream>
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#include <fstream>
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#include <thread>
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#include <string.h>
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#include <thorvg.h>
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using namespace std;
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/************************************************************************/
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/* Drawing Commands */
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/************************************************************************/
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void tvgDrawStar(tvg::Shape* star)
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{
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star->moveTo(199, 34);
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star->lineTo(253, 143);
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star->lineTo(374, 160);
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star->lineTo(287, 244);
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star->lineTo(307, 365);
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star->lineTo(199, 309);
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star->lineTo(97, 365);
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star->lineTo(112, 245);
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star->lineTo(26, 161);
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star->lineTo(146, 143);
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star->close();
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}
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unique_ptr<tvg::Paint> tvgTexmap(uint32_t * data, int width, int heigth)
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{
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auto texmap = tvg::Picture::gen();
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if (texmap->load(data, width, heigth, true, true) != tvg::Result::Success) return nullptr;
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texmap->translate(100, 100);
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//Composing Meshes
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tvg::Polygon triangles[4];
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triangles[0].vertex[0] = {{100, 125}, {0, 0}};
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triangles[0].vertex[1] = {{300, 100}, {0.5, 0}};
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triangles[0].vertex[2] = {{200, 550}, {0, 1}};
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triangles[1].vertex[0] = {{300, 100}, {0.5, 0}};
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triangles[1].vertex[1] = {{350, 450}, {0.5, 1}};
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triangles[1].vertex[2] = {{200, 550}, {0, 1}};
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triangles[2].vertex[0] = {{300, 100}, {0.5, 0}};
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triangles[2].vertex[1] = {{500, 200}, {1, 0}};
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triangles[2].vertex[2] = {{350, 450}, {0.5, 1}};
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triangles[3].vertex[0] = {{500, 200}, {1, 0}};
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triangles[3].vertex[1] = {{450, 450}, {1, 1}};
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triangles[3].vertex[2] = {{350, 450}, {0.5, 1}};
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if (texmap->mesh(triangles, 4) != tvg::Result::Success) return nullptr;
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return texmap;
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}
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unique_ptr<tvg::Paint> tvgClippedImage(uint32_t * data, int width, int heigth)
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{
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auto image = tvg::Picture::gen();
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if (image->load(data, width, heigth, true, true) != tvg::Result::Success) return nullptr;
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image->translate(400, 0);
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image->scale(2);
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auto imageClip = tvg::Shape::gen();
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imageClip->appendCircle(400, 200, 80, 180);
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imageClip->translate(200, 0);
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image->composite(std::move(imageClip), tvg::CompositeMethod::ClipPath);
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return image;
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}
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unique_ptr<tvg::Paint> tvgMaskedSvg()
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{
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auto svg = tvg::Picture::gen();
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if (svg->load(EXAMPLE_DIR"/tiger.svg") != tvg::Result::Success) return nullptr;
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svg->opacity(200);
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svg->scale(0.3);
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svg->translate(50, 450);
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auto svgMask = tvg::Shape::gen();
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tvgDrawStar(svgMask.get());
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svgMask->fill(0, 0, 0);
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svgMask->translate(30, 440);
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svgMask->opacity(200);
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svgMask->scale(0.7);
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svg->composite(std::move(svgMask), tvg::CompositeMethod::AlphaMask);
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return svg;
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}
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unique_ptr<tvg::Paint> tvgNestedPaints(tvg::Fill::ColorStop* colorStops, int colorStopsCnt)
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{
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auto scene = tvg::Scene::gen();
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scene->translate(100, 100);
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auto scene2 = tvg::Scene::gen();
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scene2->rotate(10);
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scene2->scale(2);
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scene2->translate(400,400);
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auto shape = tvg::Shape::gen();
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shape->appendRect(50, 0, 50, 100, 10, 40);
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shape->fill(0, 0, 255, 125);
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scene2->push(std::move(shape));
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scene->push(std::move(scene2));
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auto shape2 = tvg::Shape::gen();
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shape2->appendRect(0, 0, 50, 100, 10, 40);
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auto fillShape = tvg::RadialGradient::gen();
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fillShape->radial(25, 50, 25);
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fillShape->colorStops(colorStops, colorStopsCnt);
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shape2->fill(std::move(fillShape));
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shape2->scale(2);
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shape2->opacity(200);
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shape2->translate(400, 400);
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scene->push(std::move(shape2));
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return scene;
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}
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unique_ptr<tvg::Paint> tvgGradientShape(tvg::Fill::ColorStop* colorStops, int colorStopsCnt)
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{
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float dashPattern[2] = {30, 40};
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//gradient shape + dashed stroke
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auto fillStroke = tvg::LinearGradient::gen();
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fillStroke->linear(20, 120, 380, 280);
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fillStroke->colorStops(colorStops, colorStopsCnt);
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auto fillShape = tvg::LinearGradient::gen();
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fillShape->linear(20, 120, 380, 280);
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fillShape->colorStops(colorStops, colorStopsCnt);
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auto shape = tvg::Shape::gen();
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shape->appendCircle(200, 200, 180, 80);
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shape->fill(std::move(fillShape));
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shape->strokeWidth(20);
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shape->strokeDash(dashPattern, 2);
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shape->strokeFill(std::move(fillStroke));
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return shape;
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}
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unique_ptr<tvg::Paint> tvgCircle1(tvg::Fill::ColorStop* colorStops, int colorStopsCnt)
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{
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auto circ = tvg::Shape::gen();
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circ->appendCircle(400, 375, 50, 50);
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circ->fill(0, 255, 0, 155);
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return circ;
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}
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unique_ptr<tvg::Paint> tvgCircle2(tvg::Fill::ColorStop* colorStops, int colorStopsCnt)
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{
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auto circ = tvg::Shape::gen();
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circ->appendCircle(400, 425, 50, 50);
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auto fill = tvg::RadialGradient::gen();
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fill->radial(400, 425, 50);
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fill->colorStops(colorStops, colorStopsCnt);
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circ->fill(std::move(fill));
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return circ;
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}
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void exportTvg()
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{
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//prepare the main scene
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auto scene = tvg::Scene::gen();
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//prepare image source
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const int width = 200;
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const int height = 300;
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ifstream file(EXAMPLE_DIR"/rawimage_200x300.raw", ios::binary);
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if (!file.is_open()) return;
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uint32_t *data = (uint32_t*) malloc(sizeof(uint32_t) * width * height);
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if (!data) return;
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file.read(reinterpret_cast<char*>(data), sizeof(uint32_t) * width * height);
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file.close();
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//texmap image
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auto texmap = tvgTexmap(data, width, height);
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if (scene->push(std::move(texmap)) != tvg::Result::Success) return;
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//clipped image
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auto image = tvgClippedImage(data, width, height);
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if (scene->push(std::move(image)) != tvg::Result::Success) return;
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free(data);
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//prepare gradient common data
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tvg::Fill::ColorStop colorStops1[3];
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colorStops1[0] = {0, 255, 0, 0, 255};
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colorStops1[1] = {0.5, 0, 0, 255, 127};
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colorStops1[2] = {1, 127, 127, 127, 127};
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tvg::Fill::ColorStop colorStops2[2];
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colorStops2[0] = {0, 255, 0, 0, 255};
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colorStops2[1] = {1, 50, 0, 255, 255};
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tvg::Fill::ColorStop colorStops3[2];
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colorStops3[0] = {0, 0, 0, 255, 155};
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colorStops3[1] = {1, 0, 255, 0, 155};
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//gradient shape + dashed stroke
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auto shape1 = tvgGradientShape(colorStops1, 3);
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if (scene->push(std::move(shape1)) != tvg::Result::Success) return;
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//nested paints
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auto scene2 = tvgNestedPaints(colorStops2, 2);
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if (scene->push(std::move(scene2)) != tvg::Result::Success) return;
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//masked svg file
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auto svg = tvgMaskedSvg();
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if (scene->push(std::move(svg)) != tvg::Result::Success) return;
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//solid top circle and gradient bottom circle
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auto circ1 = tvgCircle1(colorStops3, 2);
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if (scene->push(std::move(circ1)) != tvg::Result::Success) return;
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auto circ2 = tvgCircle2(colorStops3, 2);
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if (scene->push(std::move(circ2)) != tvg::Result::Success) return;
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//inv mask applied to the main scene
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auto mask = tvg::Shape::gen();
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mask->appendCircle(400, 400, 15, 15);
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mask->fill(0, 0, 0);
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scene->composite(std::move(mask), tvg::CompositeMethod::InvAlphaMask);
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//save the tvg file
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auto saver = tvg::Saver::gen();
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if (saver->save(std::move(scene), EXAMPLE_DIR"/test.tvg") == tvg::Result::Success) {
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saver->sync();
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cout << "Successfully exported to test.tvg, Please check the result using PictureTvg!" << endl;
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return;
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}
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cout << "Problem with saving the test.tvg file. Did you enable TVG Saver?" << endl;
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}
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/************************************************************************/
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/* Main Code */
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/************************************************************************/
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int main(int argc, char **argv)
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{
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//Threads Count
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auto threads = std::thread::hardware_concurrency();
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if (threads > 0) --threads; //Allow the designated main thread capacity
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//Initialize ThorVG Engine
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if (tvg::Initializer::init(threads) == tvg::Result::Success) {
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exportTvg();
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//Terminate ThorVG Engine
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tvg::Initializer::term();
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} else {
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cout << "engine is not supported" << endl;
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}
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return 0;
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}
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