examples: add Fill SceneEffect sample

examples/EffectFill.cpp

@@ -0,0 +1,84 @@
+/*
+ * 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};
+
+    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;
+
+        auto progress = tvgexam::progress(elapsed, 2.5f, true);   //2.5 seconds
+
+        //Clear the previously applied effects
+        scene[0]->push(tvg::SceneEffect::ClearAll);
+        //Apply Fill post effect (rgba)
+        scene[0]->push(tvg::SceneEffect::Fill, 255, 255, 0, (int)(255.0f * progress));
+
+        scene[1]->push(tvg::SceneEffect::ClearAll);
+        scene[1]->push(tvg::SceneEffect::Fill, 255, 255, 255, (int)(255.0f * progress));
+
+        scene[2]->push(tvg::SceneEffect::ClearAll);
+        scene[2]->push(tvg::SceneEffect::Fill, 0, 255, 255, (int)(255.0f * progress));
+
+        canvas->update();
+
+        return true;
+    }
+
+};
+
+
+/************************************************************************/
+/* Entry Point                                                          */
+/************************************************************************/
+
+int main(int argc, char **argv)
+{
+    return tvgexam::main(new UserExample, argc, argv, true, 1200, 400, 4, true);
+}

examples/meson.build

@@ -29,8 +29,9 @@ source_file = [
     'DataLoad.cpp',
     'DirectUpdate.cpp',
     'Duplicate.cpp',
-    'EffectGaussianBlur.cpp',
     'EffectDropShadow.cpp',
+    'EffectGaussianBlur.cpp',
+    'EffectFill.cpp',
     'FillRule.cpp',
     'FillSpread.cpp',
     'GifSaver.cpp',