Adds seed to noise and CloudSettings

common/noise/cloudnoise.cpp

@@ -2,17 +2,17 @@
 #include "worleynoise.h"
 #include "perlinnoise.h"
 
-CloudNoise::CloudNoise(int size) : Noise(size)
+CloudNoise::CloudNoise(int size, unsigned int seed) : Noise(size)
 {
     int minSize = std::min(32, size);
 
     // Some worley noises
-    WorleyNoise worleyNoise1(minSize, 3);
-    WorleyNoise worleyNoise3(size, 15);
+    WorleyNoise worleyNoise1(minSize, 3, seed);
+    WorleyNoise worleyNoise3(size, 15, seed);
 
     // Some perlin noises
-    PerlinNoise perlinNoise1(minSize, 3);
-    PerlinNoise perlinNoise2(size, 15);
+    PerlinNoise perlinNoise1(minSize, 3, seed);
+    PerlinNoise perlinNoise2(size, 15, seed);
 
     // Generate the noise
     for (int x = 0; x < size; x++)

common/noise/cloudnoise.h

@@ -7,7 +7,12 @@
 class CloudNoise : public Noise
 {
 public:
-    CloudNoise(int size);
+    /**
+     *
+     * @param size
+     * @param seed 0 for random seed
+     */
+    CloudNoise(int size, unsigned int seed = 0);
 };
 
 

common/noise/perlinnoise.cpp

@@ -56,11 +56,15 @@ float PerlinNoise::getGradientValue(int x, int y, int z)
     return noise;
 }
 
-PerlinNoise::PerlinNoise(int size, int gridSize) : Noise(size), gridSize(gridSize)
+PerlinNoise::PerlinNoise(int size, int gridSize, unsigned int seed) : Noise(size), gridSize(gridSize)
 {
     // Init random
-    std::random_device rd;
-    this->generator = std::mt19937(rd());
+    if (seed == 0)
+    {
+        std::random_device rd;
+        seed = rd();
+    }
+    this->generator = std::mt19937(seed);
     this->distribution = std::normal_distribution<float>(0.0f, 1.0f);
 
     generateNoise();

common/noise/perlinnoise.h

@@ -8,7 +8,13 @@
 class PerlinNoise : public Noise
 {
 public:
-    PerlinNoise(int size, int gridSize);
+    /**
+     *
+     * @param size
+     * @param gridSize
+     * @param seed 0 for random seed
+     */
+    PerlinNoise(int size, int gridSize, unsigned int seed = 0);
 
 private:
     void generateNoise();

common/noise/worleynoise.cpp

@@ -66,11 +66,15 @@ void WorleyNoise::generateNoise()
               << duration.count() << " seconds" << std::endl;
 }
 
-WorleyNoise::WorleyNoise(int size, int numberOfPoints) : numberOfPoints(numberOfPoints), Noise(size)
+WorleyNoise::WorleyNoise(int size, int numberOfPoints, unsigned int seed) : numberOfPoints(numberOfPoints), Noise(size)
 {
     // Init random
-    std::random_device rd;
-    this->generator = std::mt19937(rd());
+    if (seed == 0)
+    {
+        std::random_device rd;
+        seed = rd();
+    }
+    this->generator = std::mt19937(seed);
     this->distribution = std::uniform_real_distribution<float>(0.0f, 1.0f);
 
     generateNoise();

common/noise/worleynoise.h

@@ -10,7 +10,13 @@
 class WorleyNoise : public Noise
 {
 public:
-    WorleyNoise(int size, int numberOfPoints);
+    /**
+     *
+     * @param size
+     * @param numberOfPoints
+     * @param seed 0 for random seed
+     */
+    WorleyNoise(int size, int numberOfPoints, unsigned int seed = 0);
 
 protected:
     int numberOfPoints;

fancy1.cpp

@@ -28,7 +28,7 @@
 int main()
 {
     FastScene scene;
-    scene.setBackgroundColor(Color(0.529f, 0.808f, 0.922f) * 1.0f);
+    scene.setBackgroundColor(Color(0.2588f, 0.5098f, 0.9568f) * 1.0f);
 //    scene.setBackgroundColor(Color(1, 0.79f, 0.62f) * 0.8f);
 
     // Add lights
@@ -50,9 +50,9 @@ int main()
 //    scene.add(std::make_shared<Box>(Vector3d(9.0f, 3.0f, 12.0f), Vector3d(3.0f, 3.0f, 3.0f), boxShader1));
 
     // Add floor
-    auto floorShader = std::make_shared<SimpleShadowShader>(Color(0.9f, 0.9f, 0.9f));
-    scene.add(std::make_shared<InfinitePlane>(Vector3d(0.0f, 0.0f, 0.0f), Vector3d(0.0f, 1.0f, 0.0f),
-                                              floorShader));
+//    auto floorShader = std::make_shared<SimpleShadowShader>(Color(0.9f, 0.9f, 0.9f));
+//    scene.add(std::make_shared<InfinitePlane>(Vector3d(0.0f, 0.0f, 0.0f), Vector3d(0.0f, 1.0f, 0.0f),
+//                                              floorShader));
 
     // Add box for volume shader
     auto cloudSettings = CloudSettings();
@@ -72,7 +72,7 @@ int main()
     // Render the scene
     SuperRenderer sr;
     sr.setSuperSamplingFactor(1);
-    sr.renderImage(scene, camera, 256, 256).save("result.png");
+    sr.renderImage(scene, camera, 512, 512).save("result.png");
 
     return 0;
 }

shader/cloudshader.cpp

@@ -69,7 +69,7 @@ bool CloudShader::isTransparent() const
 }
 
 CloudShader::CloudShader(const CloudSettings &settings) : settings(settings),
-                                                          cloudNoise(CloudNoise(NOISE_SIZE))
+                                                          cloudNoise(CloudNoise(NOISE_SIZE, settings.seed))
 {
     cloudNoise.invert = true;
 }

shader/cloudshader.h

@@ -12,6 +12,7 @@ float const TRANSMITTANCE_BREAK = 0.0001f;  // If transmittance goes below this
 
 struct CloudSettings
 {
+    unsigned int seed = 0;  // 0 for random seed
     float densitySteps = .2f;   // .2f
     float scale = 30;   // 30
     float densityOffset = -.55f;    // -.55f