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examples TvgSaver: code refactoring.
extracted functions for a better readiabilty.
This commit is contained in:
Hermet Park
parent
f03b260b19
commit
dc583325b3
1 changed files with 140 additions and 91 deletions
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@ -47,22 +47,10 @@ void tvgDrawStar(tvg::Shape* star)
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star->close();
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}
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void exportTvg()
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unique_ptr<tvg::Paint> tvgTexmap(uint32_t * data, int width, int heigth)
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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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//image data
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ifstream file(EXAMPLE_DIR"/rawimage_200x300.raw");
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if (!file.is_open()) return;
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uint32_t *data = (uint32_t*) malloc(sizeof(uint32_t) * 200 * 300);
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if (!data) return;
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file.read(reinterpret_cast<char*>(data), sizeof(uint32_t) * 200 * 300);
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file.close();
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//texmap image
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auto texmap = tvg::Picture::gen();
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if (texmap->load(data, 200, 300, true) != tvg::Result::Success) return;
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if (texmap->load(data, width, heigth, true) != tvg::Result::Success) return nullptr;
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texmap->translate(100, 100);
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//Composing Meshes
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@ -83,12 +71,15 @@ void exportTvg()
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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;
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if (scene->push(move(texmap)) != tvg::Result::Success) return;
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if (texmap->mesh(triangles, 4) != tvg::Result::Success) return nullptr;
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//clipped image
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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, 200, 300, true) != tvg::Result::Success) return;
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if (image->load(data, width, heigth, 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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@ -98,9 +89,134 @@ void exportTvg()
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imageClip->translate(200, 0);
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image->composite(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, 255);
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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(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(move(shape));
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scene->push(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(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(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(move(fillShape));
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shape->stroke(20);
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shape->stroke(dashPattern, 2);
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shape->stroke(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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auto fill = tvg::RadialGradient::gen();
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fill->radial(400, 375, 50);
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fill->colorStops(colorStops, colorStopsCnt);
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circ->fill(move(fill));
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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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circ->fill(0, 255, 0, 155);
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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(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");
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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(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(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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@ -114,90 +230,23 @@ void exportTvg()
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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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float dashPattern[2] = {30, 40};
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//gradient shape + dashed stroke
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auto fillStroke1 = tvg::LinearGradient::gen();
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fillStroke1->linear(20, 120, 380, 280);
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fillStroke1->colorStops(colorStops1, 3);
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auto fillShape1 = tvg::LinearGradient::gen();
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fillShape1->linear(20, 120, 380, 280);
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fillShape1->colorStops(colorStops1, 3);
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auto shape1 = tvg::Shape::gen();
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shape1->appendCircle(200, 200, 180, 80);
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shape1->fill(move(fillShape1));
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shape1->stroke(20);
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shape1->stroke(dashPattern, 2);
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shape1->stroke(move(fillStroke1));
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auto shape1 = tvgGradientShape(colorStops1, 3);
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if (scene->push(move(shape1)) != tvg::Result::Success) return;
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//nested paints
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auto scene2 = tvg::Scene::gen();
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scene2->translate(100, 100);
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auto scene3 = tvg::Scene::gen();
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scene3->rotate(10);
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scene3->scale(2);
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scene3->translate(400,400);
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auto shape2 = tvg::Shape::gen();
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shape2->appendRect(50, 0, 50, 100, 10, 40);
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shape2->fill(0, 0, 255, 125);
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scene3->push(move(shape2));
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scene2->push(move(scene3));
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auto shape3 = tvg::Shape::gen();
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shape3->appendRect(0, 0, 50, 100, 10, 40);
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auto fillShape3 = tvg::RadialGradient::gen();
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fillShape3->radial(25, 50, 25);
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fillShape3->colorStops(colorStops2, 2);
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shape3->fill(move(fillShape3));
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shape3->scale(2);
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shape3->opacity(200);
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shape3->translate(400, 400);
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scene2->push(move(shape3));
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auto scene2 = tvgNestedPaints(colorStops2, 2);
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if (scene->push(move(scene2)) != tvg::Result::Success) return;
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//masked svg file
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auto svg = tvg::Picture::gen();
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if (svg->load(EXAMPLE_DIR"/tiger.svg") != tvg::Result::Success) return;
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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, 255);
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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(move(svgMask), tvg::CompositeMethod::AlphaMask);
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auto svg = tvgMaskedSvg();
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if (scene->push(move(svg)) != tvg::Result::Success) return;
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//solid top circle and gradient bottom circle
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auto circ1 = tvg::Shape::gen();
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circ1->appendCircle(400, 375, 50, 50);
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auto fill1 = tvg::RadialGradient::gen();
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fill1->radial(400, 375, 50);
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fill1->colorStops(colorStops3, 2);
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circ1->fill(move(fill1));
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circ1->fill(0, 255, 0, 155);
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auto circ2 = tvg::Shape::gen();
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circ2->appendCircle(400, 425, 50, 50);
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circ2->fill(0, 255, 0, 155);
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auto fill2 = tvg::RadialGradient::gen();
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fill2->radial(400, 425, 50);
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fill2->colorStops(colorStops3, 2);
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circ2->fill(move(fill2));
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auto circ1 = tvgCircle1(colorStops3, 2);
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if (scene->push(move(circ1)) != tvg::Result::Success) return;
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auto circ2 = tvgCircle2(colorStops3, 2);
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if (scene->push(move(circ2)) != tvg::Result::Success) return;
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//inv mask applied to the main scene
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