Scene for Bloom effect and some variable adjustments

CMakeLists.txt

@@ -78,6 +78,9 @@ endif()
 add_executable(fancy1 fancy1.cpp)
 target_link_libraries(fancy1 tracey)
 
+add_executable(bloom bloom.cpp)
+target_link_libraries(bloom tracey)
+
 add_executable(DOFScene DOFScene.cpp)
 target_link_libraries(DOFScene tracey)
 

DOFScene.cpp

@@ -90,10 +90,10 @@ int main() {
 
     // initialize renderer: aperture = lens thickness, secondaryRayCount = how many rays per pixel are created
     // focalLength = the area which is in focus
-    DOFRenderer renderer(0.2, 100, 10.0f);
+    DOFRenderer renderer(0.2, 50, 10.0f);
 
     // Use DOFRenderer to raytrace !!! careful more pixels lead to insane rendering times
-    int width = 1920;
+    int width = 600;
     Texture image = renderer.renderImage(scene, camera, width, width / 16 * 9);
 
     // Use post-processing Bloom effect

bloom.cpp

@@ -0,0 +1,60 @@
+#include <iostream>
+#include <string>
+#include <post_processing/bloom.h>
+#include <shader/phongshader.h>
+#include <shader/simpleshadowshader.h>
+#include <light/pointlight.h>
+
+#include "camera/perspectivecamera.h"
+
+#include "renderer/simplerenderer.h"
+
+#include "scene/simplescene.h"
+
+#include "primitive/box.h"
+#include "primitive/infiniteplane.h"
+#include "primitive/sphere.h"
+#include "primitive/triangle.h"
+
+
+int main() {
+    SimpleScene scene;
+
+    scene.setBackgroundColor(Color(0, 0, 0));
+
+    // Add shaders
+    auto red = std::make_shared<SimpleShadowShader>(Color(1.0f, 0.3f, 0.2f));
+    auto gray = std::make_shared<SimpleShadowShader>(Color(0.78f, 0.78f, 0.78f));
+    auto blue = std::make_shared<SimpleShadowShader>(Color(0.2f, 0.3f, 1.0f));
+    auto orange = std::make_shared<PhongShader>(Color(1.0f, 0.64f, 0.0f), 1.0f, Color(1.0f, 1.0f, 1.0f), 1.0f, 25.0f);
+
+
+    scene.add(std::make_shared<Box>(Vector3d(5.0f, -5.0f, 0.0f), Vector3d(4.0f, 4.0f, 4.0f), red));
+    scene.add(std::make_shared<Box>(Vector3d(-5.0f, -3.0f, 1.0f), Vector3d(1.0f, 6.0f, 1.0f), blue));
+    scene.add(std::make_shared<Box>(Vector3d(-3.5f, 4.0f, -2.0f), Vector3d(2.0f, 2.0f, 2.0f), orange));
+    scene.add(std::make_shared<Sphere>(Vector3d(2.0f, 4.0f, 0.0f), 1.0f, orange));
+
+    scene.add(std::make_shared<PointLight>(Vector3d(0.0f, 0.0f, -11.0f), 100.0f));
+
+
+
+    // Set up the camera
+    PerspectiveCamera camera;
+    camera.setFovAngle(90.0f);
+    camera.setPosition(Vector3d(0.0f, 0.0f, -10.0f));
+    camera.setForwardDirection(Vector3d(0.0f, 0.0f, 1.0f));
+    camera.setUpDirection(Vector3d(0.0f, 1.0f, 0.0f));
+
+    // Render the scene
+    SimpleRenderer renderer;
+    Texture img = renderer.renderImage(scene, camera, 512, 512);
+
+    img.save("beforeBloom.png");
+
+    Bloom bloom = Bloom(img.getImage(), 0.88f, img);
+    img.setTexture(bloom.bloom(100, 300.0f, 1.5f));
+
+    img.save("afterBloom.png");
+
+    return 0;
+}

homeworkMains/ex4.cpp

@@ -86,14 +86,10 @@ int main() {
   // Use DOFRenderer to raytrace !!! careful more pixels lead to insane rendering times
   Texture image = renderer.renderImage(scene, camera, 1024, 1024);
 
-  // Use post-processing Bloom effect
+
-  Bloom bloomEffect = Bloom(image.getImage());
-  Texture imageWithBloom = image;
-  imageWithBloom.setTexture(bloomEffect.bloom(0.55f, 5, 10.0f, 0.06f));
 
   // save images
   image.save("result.png");
-  image.save("resultWithBloom");
 
   return 0;
 }

post_processing/bloom.cpp

@@ -2,36 +2,27 @@
 #include <iostream>
 #include "bloom.h"
 
-Bloom::Bloom(CImg<float> image) : image(image) {}
+Bloom::Bloom(CImg<float> &image, float threshold, Texture& thresholdImg) : image(image), threshold(threshold) {}
 
 
-CImg<float> Bloom::bloom(float threshold, int kernelSize, float sigma, float intensity) {
+CImg<float> Bloom::bloom(int kernelSize, float sigma, float intensity) {
-    // Apply threshold to image
+
-    //CImg<float> brightPixels = image_.get_threshold(threshold);
+    CImg<float> brightPixels = image.get_threshold(threshold);
-    //brightPixels.save("brightpixels.png");
 
     // Apply gaussian blur to bright pixels
     CImg<float> kernel = computeGaussianKernel(kernelSize, sigma);
     CImg<float> blurred = convolution(image, kernel);
-    for(int i = 0; i < 3; i++){
-        kernel = computeGaussianKernel(kernelSize, sigma);
-        blurred = convolution(image, kernel);
     blurred *= intensity;
-    }
 
     // Add blurred image back to original image
     cimg_forXYC(image, x, y, c) {
-        float value = image(x,y,0,c) + blurred(x,y,0,c);
+                float value = image(x, y, 0, c) + blurred(x, y, 0, c);
-        image(x,y,0,c) = (value > 1.0f) ? 1.0f : value;
+                image(x, y, 0, c) = (value > 1.0f) ? 1.0f : value;
             }
 
     return image;
 }
 
-void Bloom::gaussianBlur(int kernelSize, float sigma) {
-    CImg<float> kernel = computeGaussianKernel(kernelSize, sigma);
-    image = convolution(image, kernel);
-}
 
 // Function to compute Gaussian kernel
 CImg<float> Bloom::computeGaussianKernel(int kernelSize, float sigma) {
@@ -72,7 +63,7 @@ CImg<float> Bloom::convolution(CImg<float> &img, CImg<float> &kernel) {
                     cimg_forX(kernel, n) {
                         int x = i + n - kernelRadius;
                         int y = j + m - kernelRadius;
-                if(x >= 0 && x < imgCols && y >= 0 && y < imgRows){
+                        if (x >= 0 && x < imgCols && y >= 0 && y < imgRows) {
                             sum += img(x, y, 0, c) * kernel(n, m);
                         }
 
@@ -82,7 +73,3 @@ CImg<float> Bloom::convolution(CImg<float> &img, CImg<float> &kernel) {
             }
     return result;
 }
-
-void Bloom::scaleBrightness(float scale) {
-    image *= scale;
-}

post_processing/bloom.h

@@ -8,19 +8,17 @@
 class Bloom {
 
 public:
-    Bloom(CImg<float> image);
+    Bloom(CImg<float>& image, float threshold, Texture& thresholdImg);
-    CImg<float> bloom(float threshold, int kernelSize, float sigma, float intensity);
+    CImg<float> bloom(int kernelSize, float sigma, float intensity);
 
 private:
-    void scaleBrightness(float scale);
-    void gaussianBlur(int kernelSize, float sigma);
-
     CImg<float> convolution(CImg<float> &img, CImg<float> &kernel);
     CImg<float> computeGaussianKernel(int kernelSize, float sigma);
 
-
-
     CImg<float> image;
+
+    float threshold;
+
 };