Adds simple example scene for aliasing artifacts

ex6.cpp

@@ -8,8 +8,11 @@
 #include "primitive/sphere.h"
 
 #include "renderer/simplerenderer.h"
+
 #ifdef SUPERRENDERER_FOUND
+
 #include "renderer/superrenderer.h"
+
 #endif
 
 #include "shader/materialshader.h"
@@ -17,8 +20,41 @@
 #include "light/ambientlight.h"
 #include "light/pointlight.h"
 #include "light/spotlight.h"
+#include "shader/flatshader.h"
 
-int main() {
+void renderAliasingScene()
+{
+    FastScene scene;
+    scene.setBackgroundColor(Color(0.5f, 0.5f, 1));
+
+    // Set up the camera
+    PerspectiveCamera camera;
+    camera.setPosition(Vector3d(0, 0, 0));
+    camera.setForwardDirection(normalized(Vector3d(1, 0, 0)));
+    camera.setUpDirection(normalized(Vector3d(0.0f, 1.0f, 0.0f)));
+    camera.setFovAngle(75.0f);
+
+    auto orange = std::make_shared<FlatShader>(Color(1, 0.8f, 0.2f));
+    auto sphere = std::make_shared<Sphere>(Vector3d(5, 0, 0), 3, orange);
+
+    scene.add(sphere);
+
+    // build the tree
+    scene.buildTree();
+
+    // Render the scene
+    SimpleRenderer renderer;
+    renderer.renderImage(scene, camera, 64, 64).save("aliasing.png");
+
+#ifdef SUPERRENDERER_FOUND
+    SuperRenderer sr;
+    sr.setSuperSamplingFactor(4);
+    sr.renderImage(scene, camera, 64, 64).save("aliasing_super.png");
+#endif
+}
+
+int main()
+{
     FastScene scene;
     scene.setEnvironmentMap(std::make_shared<Texture>("data/TychoSkymapII.t5_04096x02048.png"));
 
@@ -85,5 +121,7 @@ int main() {
     sr.renderImage(scene, camera, 1024, 768).save("result_super.png");
 #endif
 
+    renderAliasingScene();
+
     return 0;
 }