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+v 0.787552 0.409838 0.721031
+v 0.787552 -0.090162 0.221031
+v 0.787552 0.409838 0.221031
+v 0.836243 -0.090162 0.721031
+v 0.836243 0.409838 0.721031
+v 0.836243 -0.090162 0.221031
+v 0.836243 0.409838 0.221031
+vn -1.0000 -0.0000 -0.0000
+vn -0.0000 -0.0000 -1.0000
+vn 1.0000 -0.0000 -0.0000
+vn -0.0000 -0.0000 1.0000
+vn -0.0000 -1.0000 -0.0000
+vn -0.0000 1.0000 -0.0000
+vt 0.375000 0.000000
+vt 0.375000 1.000000
+vt 0.125000 0.750000
+vt 0.625000 0.000000
+vt 0.625000 1.000000
+vt 0.875000 0.750000
+vt 0.125000 0.500000
+vt 0.375000 0.250000
+vt 0.625000 0.250000
+vt 0.875000 0.500000
+vt 0.375000 0.750000
+vt 0.625000 0.750000
+vt 0.375000 0.500000
+vt 0.625000 0.500000
+s 0
+f 34/60/25 35/64/25 33/57/25
+f 36/65/26 39/69/26 35/64/26
+f 40/70/27 37/67/27 39/69/27
+f 38/68/28 33/58/28 37/67/28
+f 39/69/29 33/59/29 35/63/29
+f 36/66/30 38/68/30 40/70/30
+f 34/60/25 36/65/25 35/64/25
+f 36/65/26 40/70/26 39/69/26
+f 40/70/27 38/68/27 37/67/27
+f 38/68/28 34/61/28 33/58/28
+f 39/69/29 37/67/29 33/59/29
+f 36/66/30 34/62/30 38/68/30
+o Cube.005
+v 0.787552 -0.090162 -0.227981
+v 0.787552 0.409838 -0.227981
+v 0.787552 -0.090162 -0.727981
+v 0.787552 0.409838 -0.727981
+v 0.836243 -0.090162 -0.227981
+v 0.836243 0.409838 -0.227981
+v 0.836243 -0.090162 -0.727981
+v 0.836243 0.409838 -0.727981
+vn -1.0000 -0.0000 -0.0000
+vn -0.0000 -0.0000 -1.0000
+vn 1.0000 -0.0000 -0.0000
+vn -0.0000 -0.0000 1.0000
+vn -0.0000 -1.0000 -0.0000
+vn -0.0000 1.0000 -0.0000
+vt 0.375000 0.000000
+vt 0.375000 1.000000
+vt 0.125000 0.750000
+vt 0.625000 0.000000
+vt 0.625000 1.000000
+vt 0.875000 0.750000
+vt 0.125000 0.500000
+vt 0.375000 0.250000
+vt 0.625000 0.250000
+vt 0.875000 0.500000
+vt 0.375000 0.750000
+vt 0.625000 0.750000
+vt 0.375000 0.500000
+vt 0.625000 0.500000
+s 0
+f 42/74/31 43/78/31 41/71/31
+f 44/79/32 47/83/32 43/78/32
+f 48/84/33 45/81/33 47/83/33
+f 46/82/34 41/72/34 45/81/34
+f 47/83/35 41/73/35 43/77/35
+f 44/80/36 46/82/36 48/84/36
+f 42/74/31 44/79/31 43/78/31
+f 44/79/32 48/84/32 47/83/32
+f 48/84/33 46/82/33 45/81/33
+f 46/82/34 42/75/34 41/72/34
+f 47/83/35 45/81/35 41/73/35
+f 44/80/36 42/76/36 46/82/36

Step 2/include/world.h

@@ -45,24 +45,25 @@ namespace Raytracing {
             std::vector<Triangle> triangles;
             ModelData& data;
             // basically we have to store this crap here because c++ loves to copy stuff
-            std::vector<Object*> createdTreeObjects;
+            //std::vector<Object*> createdTreeObjects{};
-            BVHTree* tree;
+            //BVHTree* tree = nullptr;
         public:
             ModelObject(const Vec4& position, ModelData& data, Material* material): Object(material, position), data(data) {
                 // since all of this occurs before the main ray tracing algorithm it's fine to do sequentially
                 triangles = data.toTriangles();
                 this->aabb = data.aabb;
-                createdTreeObjects = Raytracing::ModelData::createBVHTree(triangles, position);
+                //createdTreeObjects = Raytracing::ModelData::createBVHTree(triangles, position);
-                tree = new BVHTree(createdTreeObjects);
+                //tree = new BVHTree(createdTreeObjects);
             }
             [[nodiscard]] virtual HitData checkIfHit(const Ray& ray, PRECISION_TYPE min, PRECISION_TYPE max) const;
             virtual Object* clone() {
                 return new ModelObject(position, data, material);
             }
             virtual ~ModelObject() {
-                for (auto* p : createdTreeObjects)
+                // Disabled for now, causing bugs when on release mode.
-                    delete(p);
+                //for (auto* p : createdTreeObjects)
-                delete(tree);
+                //    delete(p);
+                //delete(tree);
             }
     };
 
@@ -104,7 +105,7 @@ namespace Raytracing {
              * saving on computation
              */
             // TODO: the above todo has been done, now we need to test the performance advantage of the BVH
-            BVHTree* bvhTree = nullptr;
+            //BVHTree* bvhTree = nullptr;
             std::unordered_map<std::string, Material*> materials;
         public:
             World() = default;

Step 2/src/main.cpp

@@ -44,11 +44,12 @@ int main(int argc, char** args) {
     // not perfect (contains duplicates) but good enough.
     parser.printAllInInfo();
 
-    Raytracing::Image image(445, 256);
+    //Raytracing::Image image(445, 256);
+    Raytracing::Image image(910, 512);
 
     Raytracing::Camera camera(90, image);
     //camera.setPosition({0, 0, 1});
-    camera.lookAt(Raytracing::Vec4(-3,3,3), Raytracing::Vec4(0, 0, 0), Raytracing::Vec4(0, 1, 0));
+    camera.lookAt(Raytracing::Vec4(-2,2,2), Raytracing::Vec4(0, 0, 0), Raytracing::Vec4(0, 1, 0));
 
     Raytracing::World world;
 
@@ -66,17 +67,18 @@ int main(int argc, char** args) {
 
     //world.add(new Raytracing::SphereObject(Raytracing::vec4(0,0,-1,0), 0.5, world.getMaterial("redDiffuse")));
     //world.add(new Raytracing::SphereObject(Raytracing::vec4(-1,0,-1,0), 0.5, world.getMaterial("blueMetal")));
-    //world.add(new Raytracing::SphereObject(Raytracing::vec4(1,0,-1,0), 0.5, world.getMaterial("redMetal")));
+    //world.add(new Raytracing::SphereObject(Raytracing::Vec4(1,0,-1,0), 0.5, world.getMaterial("redMetal")));
     world.add(new Raytracing::SphereObject(Raytracing::Vec4(0,-100.5,-1,0), 100, world.getMaterial("greenDiffuse")));
-    //world.add(new Raytracing::TriangleObject(Raytracing::vec4(0,0.1,-0.5f,0), {{-0.5, -0.5, 0.0}, {0.5, -0.5, 0.0}, {0.0,  0.5, 0}}, world.getMaterial("greenDiffuse")));
+    //world.add(new Raytracing::TriangleObject(Raytracing::Vec4(0,0.1,-0.5f,0), {{-0.5, -0.5, 0.0}, {0.5, -0.5, 0.0}, {0.0,  0.5, 0}}, world.getMaterial("greenDiffuse")));
-    world.add(new Raytracing::ModelObject({0, 0, -1}, spider, world.getMaterial("redDiffuse")));
+    world.add(new Raytracing::ModelObject({0, 1, -1}, spider, world.getMaterial("redDiffuse")));
     world.add(new Raytracing::ModelObject({2, 0, 0}, house, world.getMaterial("blueDiffuse")));
-    world.add(new Raytracing::ModelObject({5, 0, 0}, house, world.getMaterial("blueDiffuse")));
+    world.add(new Raytracing::ModelObject({5, 5, -10}, house, world.getMaterial("blueDiffuse")));
-    world.add(new Raytracing::ModelObject({5, 0, -5}, house, world.getMaterial("blueDiffuse")));
+    world.add(new Raytracing::ModelObject({5, 0, -10}, house, world.getMaterial("blueDiffuse")));
-    world.add(new Raytracing::ModelObject({-5, 5, 5}, house, world.getMaterial("blueDiffuse")));
+    world.add(new Raytracing::ModelObject({5, 5, 0}, house, world.getMaterial("blueDiffuse")));
 
     Raytracing::Raycaster raycaster {camera, image, world, parser};
 
+    ilog << "Running raycaster!\n";
     raycaster.run();
 
     Raytracing::ImageOutput imageOutput(image);
@@ -95,6 +97,7 @@ int main(int argc, char** args) {
     timeString << now->tm_min;
     timeString << ":";
     timeString << now->tm_sec;
+    ilog << "Writing Image!\n";
     imageOutput.write(parser.getOptionValue("--output") + timeString.str(), parser.getOptionValue("--format"));
 
     return 0;

Step 2/src/math/colliders.cpp

@@ -69,6 +69,7 @@ namespace Raytracing {
 
     /*
      * Sources for designing these various algorithms
+     * TODO: test these methods for performance
      * https://www.realtimerendering.com/intersections.html
      * https://web.archive.org/web/20090803054252/http://tog.acm.org/resources/GraphicsGems/gems/RayBox.c
      * https://www.scratchapixel.com/lessons/3d-basic-rendering/minimal-ray-tracer-rendering-simple-shapes/ray-box-intersection
@@ -79,6 +80,7 @@ namespace Raytracing {
     bool AABB::simpleSlabRayAABBMethod(const Ray& ray, PRECISION_TYPE tmin, PRECISION_TYPE tmax){
         // branch less design
         // adapted from 2d to fit our 3d scene.
+        // (turns out this is actually a pretty standard design, but could use some optimization)
         PRECISION_TYPE tx1 = (min.x() - ray.getStartingPoint().x())*ray.getInverseDirection().x();
         PRECISION_TYPE tx2 = (max.x() - ray.getStartingPoint().x())*ray.getInverseDirection().x();
 

Step 2/src/raytracing.cpp

@@ -63,8 +63,7 @@ namespace Raytracing {
             return {0,0,0};
         }
 
-        Vec4 dir = ray.getDirection().normalize();
+        // skybox color
-        auto t = 0.5f * (dir.y() + 1.0);
+        return {0.5, 0.7, 1.0};
-        return (1.0 - t) * Vec4(1.0, 1.0, 1.0) + t * Vec4(0.5, 0.7, 1.0);
     }
 }

Step 2/src/util/models.cpp

@@ -13,6 +13,7 @@ Raytracing::ModelData Raytracing::OBJLoader::loadModel(std::string file) {
     modelFile.open(file);
     std::stringstream modelSource;
     
+    std::cout.flush();
     // read the entire file into a string
     modelSource << modelFile.rdbuf();
 

Step 2/src/world.cpp

@@ -12,7 +12,7 @@ namespace Raytracing {
             delete (p);
         for (const auto& p: materials)
             delete (p.second);
-        delete(bvhTree);
+        //delete(bvhTree);
     }
 
     HitData SphereObject::checkIfHit(const Ray& ray, PRECISION_TYPE min, PRECISION_TYPE max) const {
@@ -57,7 +57,7 @@ namespace Raytracing {
     }
 
     std::pair<HitData, Object*> World::checkIfHit(const Ray& ray, PRECISION_TYPE min, PRECISION_TYPE max) const {
-        if (bvhTree != nullptr){
+        /*if (bvhTree != nullptr){
             auto hResult = HitData{false, Vec4(), Vec4(), max};
             Object* objPtr = nullptr;
             
@@ -86,7 +86,7 @@ namespace Raytracing {
             }
             
             return {hResult, objPtr};
-        } else {
+        } else {*/
             // rejection algo without using a binary space partitioning data structure
             auto hResult = HitData{false, Vec4(), Vec4(), max};
             Object* objPtr = nullptr;
@@ -100,11 +100,11 @@ namespace Raytracing {
                 }
             }
             return {hResult, objPtr};
-        }
+        //}
     }
 
     void World::generateBVH() {
-        bvhTree = new BVHTree(objects);
+        //bvhTree = new BVHTree(objects);
     }
 
     ScatterResults DiffuseMaterial::scatter(const Ray& ray, const HitData& hitData) const {
@@ -161,7 +161,8 @@ namespace Raytracing {
 
         // At this stage we can compute t to find out where the intersection point is on the line.
         PRECISION_TYPE t = f * Vec4::dot(edge2, q);
-        if (t > EPSILON) {
+        // keep t in reasonable bounds, ensuring we respect depth
+        if (t > EPSILON && t >= min && t <= max) {
             // ray intersects
             Vec4 rayIntersectionPoint = ray.along(t);
             Vec4 normal;
@@ -183,13 +184,24 @@ namespace Raytracing {
     }
 
     HitData ModelObject::checkIfHit(const Ray& ray, PRECISION_TYPE min, PRECISION_TYPE max) const {
-        /*auto hResult = HitData{false, Vec4(), Vec4(), max};
+        auto hResult = HitData{false, Vec4(), Vec4(), max};
         for (const Triangle& t : triangles) {
             auto cResult = checkIfTriangleGotHit(t, position, ray, min, hResult.length);
             if (cResult.hit)
                 hResult = cResult;
-        }*/
+        }
-        auto hResult = HitData{false, Vec4(), Vec4(), max};
+        // if you've made it to this point this will be in the parallel step version
+        // I've run out of time to mess with this
+        // and I hate that he made this due in the middle of exam / assignment season
+        // it's really hard for me to get in there and obsess over this
+        // when i got 4 other classes cram-ing as much useless bullshit into the next week and a half for no reason other than
+        // "hahahahha I rambled about nonsense in class for the last few weeks let's test your knowledge with a tedious assignment!!! woooooo!!!!!"
+        // this is honestly the only good 3rd year class I've taken so far
+        // Only if I had more time. THINK OF THE GRAPHS I COULD'VE MADE!!!
+        // I had plans (and still do) to make graphs of every little performance bottleneck
+        // but it's impossible when you got all this stuff due, C++ decides it hates you and wants to segfault for dumb reasons, and the program takes 20 MINUTES TO RUN!
+        // would've been able to get the GUI stuff in and fix the BVH by visualizing the bounding boxes
+        /*auto hResult = HitData{false, Vec4(), Vec4(), max};
         
         auto intersected = tree->rayIntersect(ray, min, max);
         
@@ -200,7 +212,7 @@ namespace Raytracing {
             auto cResult = checkIfTriangleGotHit(((EmptyObject*)(t))->tri, position, ray, min, hResult.length);
             if (cResult.hit)
                 hResult = cResult;
-        }
+        }*/
         
         return hResult;
     }