RayTracer Initial Framework setup

RayTracer/applications/OBJ_LOADER_LICENSE.txt

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+MIT License
+
+Copyright (c) 2016 Robert Smith
+
+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.

RayTracer/applications/Rayt.cpp

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+
+// #include "NewPlacement.hpp"
+
+#include "Buffer.hpp"
+#include "RayTracer.hpp"
+#include "Strings.hpp"
+#include "Vec.hpp"
+
+#include "OBJ_Loader.h"
+
+#define STB_IMAGE_WRITE_IMPLEMENTATION
+#include "stb_image_write.h"
+
+using namespace tp;
+
+void loadScene(Scene& scene, const String& scenePath) {
+  objl::Loader Loader;
+
+  if (!Loader.LoadFile(scenePath.read())) {
+    std::cout << "Failed to Load File. May have failed to find it or it was not an .obj file.\n";
+    return;
+  }
+
+  for (auto& curMesh : Loader.LoadedMeshes) {
+    // Go through each vertex and print its number,
+    //  position, normal, and texture coordinate
+    for (int j = 0; j < curMesh.Vertices.size(); j++) {
+      // file << "V" << j << ": "
+      //     << "P(" << curMesh.Vertices[j].Position.X << ", " << curMesh.Vertices[j].Position.Y << ", " << curMesh.Vertices[j].Position.Z << ") "
+      //     << "N(" << curMesh.Vertices[j].Normal.X << ", " << curMesh.Vertices[j].Normal.Y << ", " << curMesh.Vertices[j].Normal.Z << ") "
+      //     << "TC(" << curMesh.Vertices[j].TextureCoordinate.X << ", " << curMesh.Vertices[j].TextureCoordinate.Y << ")\n";
+    }
+
+    // Print Indices
+    // Go through every 3rd index and print the
+    //	triangle that these indices represent
+    for (int j = 0; j < curMesh.Indices.size(); j += 3) {
+      // file << "T" << j / 3 << ": " << curMesh.Indices[j] << ", " << curMesh.Indices[j + 1] << ", " << curMesh.Indices[j + 2] << "\n";
+    }
+  }
+}
+
+void writeImage(const RayTracer::RenderBuffer& output) {
+  // Save the data to a PNG file
+  struct urgb {
+    uint1 r, g, b, a;
+  };
+
+  Buffer2D<urgb> converted;
+  converted.reserve(output.size());
+
+  for (RayTracer::RenderBuffer::Index i = 0; i < output.size().x; i++) {
+    for (RayTracer::RenderBuffer::Index j = 0; j < output.size().y; j++) {
+      converted.get({i, j}).r = uint1(output.get({i, j}).r * 255);
+      converted.get({i, j}).g = uint1(output.get({i, j}).g * 255);
+      converted.get({i, j}).b = uint1(output.get({i, j}).b * 255);
+      converted.get({i, j}).a = uint1(output.get({i, j}).a * 255);
+    }
+  }
+
+  if (stbi_write_png("output.png", converted.size().x, converted.size().y, 4, converted.getBuff(), converted.size().x * 4) != 0) {
+    // Image saved successfully
+    std::cout << "Image saved successfully." << std::endl;
+  } else {
+    std::cerr << "Error saving the image." << std::endl;
+  }
+}
+
+void renderCommand(const String& scenePath, RayTracer::RenderBuffer::Index2D size) {
+  Scene scene;
+
+  loadScene(scene, scenePath);
+
+  RayTracer::RenderBuffer output;
+  output.reserve(size);
+
+  RayTracer rayt;
+
+  rayt.render(scene, output);
+
+  writeImage(output);
+}
+
+int main() {
+  tp::ModuleManifest* deps[] = {&gModuleRayTracer, nullptr};
+  tp::ModuleManifest module("Rayt", nullptr, nullptr, deps);
+
+  if (module.initialize()) {
+    renderCommand("scene.obj", {1000, 1000});
+
+    module.deinitialize();
+  }
+
+  return 0;
+}

RayTracer/applications/rsc/scene.mtl

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+# Blender MTL File: 'None'
+# Material Count: 1
+
+newmtl Material
+Ns 323.999994
+Ka 1.000000 1.000000 1.000000
+Kd 0.800000 0.800000 0.800000
+Ks 0.500000 0.500000 0.500000
+Ke 0.000000 0.000000 0.000000
+Ni 1.450000
+d 1.000000
+illum 2

RayTracer/applications/rsc/scene.obj

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+# Blender v3.0.1 OBJ File: ''
+# www.blender.org
+mtllib scene.mtl
+o Cube
+v 1.000000 1.000000 -1.000000
+v 1.000000 -1.000000 -1.000000
+v 1.000000 1.000000 1.000000
+v 1.000000 -1.000000 1.000000
+v -1.000000 1.000000 -1.000000
+v -1.000000 -1.000000 -1.000000
+v -1.000000 1.000000 1.000000
+v -1.000000 -1.000000 1.000000
+vt 0.625000 0.500000
+vt 0.875000 0.500000
+vt 0.875000 0.750000
+vt 0.625000 0.750000
+vt 0.375000 0.750000
+vt 0.625000 1.000000
+vt 0.375000 1.000000
+vt 0.375000 0.000000
+vt 0.625000 0.000000
+vt 0.625000 0.250000
+vt 0.375000 0.250000
+vt 0.125000 0.500000
+vt 0.375000 0.500000
+vt 0.125000 0.750000
+vn 0.0000 1.0000 0.0000
+vn 0.0000 0.0000 1.0000
+vn -1.0000 0.0000 0.0000
+vn 0.0000 -1.0000 0.0000
+vn 1.0000 0.0000 0.0000
+vn 0.0000 0.0000 -1.0000
+usemtl Material
+s off
+f 1/1/1 5/2/1 7/3/1 3/4/1
+f 4/5/2 3/4/2 7/6/2 8/7/2
+f 8/8/3 7/9/3 5/10/3 6/11/3
+f 6/12/4 2/13/4 4/5/4 8/14/4
+f 2/13/5 1/1/5 3/4/5 4/5/5
+f 6/11/6 5/10/6 1/1/6 2/13/6