Work on assignment 4

diff --git a/.gitignore b/.gitignore
index 2e68889e62a9ff871f325c0041491a3593035cdc..bc1c2f26f8a4e23b6c9505e984032e91d3aa7224 100644 (file)
--- a/.gitignore
+++ b/.gitignore
@@ -1,10 +1,10 @@
+tags
 .DS_Store
 *.swp
 CMakeCache.txt
 CMakeFiles
 CMakeScripts
 Testing
-Makefile
 cmake_install.cmake
 install_manifest.txt
 compile_commands.json

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2e6b60c989bbf9efc503d5e52d9e1964800b7e45..dbd4180d0cd793e32e52d2549261820d404857e7 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,7 @@ cmake_minimum_required(VERSION 2.6)
 project(opengl)
 set(CMAKE_BINARY_DIR "bin")
 set(EXECUTABLE_OUTPUT_PATH ${CMAKE_BINARY_DIR})
-add_executable(main main.cpp)
+add_executable(main main.cpp model.cpp)
 
 find_package(OpenGL REQUIRED)
 include_directories(${OPENGL_INCLUDE_DIRS})

diff --git a/Makefile b/Makefile
new file mode 100644 (file)
index 0000000..5b60118
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,5 @@
+all: main
+       
+main:
+       clang++ -g --std=c++11 *.cpp -L/usr/local/lib -lassimp -framework OpenGL -framework glut -lglew -o bin/main
+       ctags *.cpp

diff --git a/assignment-2/Makefile b/assignment-2/Makefile
new file mode 100644 (file)
index 0000000..d8f5235
--- /dev/null
+++ b/assignment-2/Makefile
@@ -0,0 +1,3 @@
+all: report.pdf
+%.pdf: %.latex
+       pdflatex -shell-escape $<

diff --git a/assignment-3/Makefile b/assignment-3/Makefile
new file mode 100644 (file)
index 0000000..d8f5235
--- /dev/null
+++ b/assignment-3/Makefile
@@ -0,0 +1,3 @@
+all: report.pdf
+%.pdf: %.latex
+       pdflatex -shell-escape $<

diff --git a/assignment-3/ambient.png b/assignment-3/ambient.png
new file mode 100644 (file)
index 0000000..ece4b0b
Binary files /dev/null and b/assignment-3/ambient.png differ

diff --git a/assignment-3/diffuse.png b/assignment-3/diffuse.png
new file mode 100644 (file)
index 0000000..87a40be
Binary files /dev/null and b/assignment-3/diffuse.png differ

diff --git a/assignment-3/final.png b/assignment-3/final.png
new file mode 100644 (file)
index 0000000..94dd61d
Binary files /dev/null and b/assignment-3/final.png differ

diff --git a/assignment-3/report.latex b/assignment-3/report.latex
new file mode 100644 (file)
index 0000000..5117b7a
--- /dev/null
+++ b/assignment-3/report.latex
@@ -0,0 +1,112 @@
+\documentclass{article}
+\usepackage{fullpage}
+\usepackage{graphicx}
+\usepackage{minted}
+\begin{document}
+
+\title{Assignment 3}
+\author{Luke Lau 15336810}
+\maketitle
+
+\begin{figure}[!htb]
+\includegraphics[width=\textwidth]{final}
+               \caption{The final product}
+\end{figure}
+
+\section{Normal generation}
+In order to calculate the lighting on the pyramids, I needed to work out their normals.
+The tutorial I've been following, \texttt{http://learnopengl.com}, has the normals for a cube
+pre-calculated in an array, and this also seems to be the standard way they are loaded from
+.obj and other model files.
+
+However I did not know the normals for the pyramid, and wanted to use something more dynamic in case
+I decide to change the shape later, so I wrote a function to calculate them:
+
+\inputminted[firstline=441,lastline=453,gobble=1]{c++}{../main.cpp}
+
+\section{Phong Lighting}
+Now that I had the normals for the pyramid, I was able to add some lighting.
+It's built up out of three components.
+
+\begin{figure}[!htb]
+\minipage{0.32\textwidth}
+  \includegraphics[width=\linewidth]{ambient}
+  \caption{Simple, global ambient lighting. The white cube is the light source.}
+\endminipage\hfill
+\minipage{0.32\textwidth}
+  \includegraphics[width=\linewidth]{diffuse}
+  \caption{Ambient with diffuse lighting. Sides facing the light are brighter.}
+\endminipage\hfill
+\minipage{0.32\textwidth}
+  \includegraphics[width=\linewidth]{specular}
+  \caption{Ambient, diffuse and specular lighting, giving a shiny appearance.}
+\endminipage
+\end{figure}
+
+\subsection{Ambient}
+Ambient lighting provides the global background lighting even when there's no direct light source.
+It is described as being similar to the light reflected from the moon during night time.
+
+\begin{minted}{c++}
+void main() {
+       float ambient = 0.1;
+       FragColor = ambient * color;
+}
+\end{minted}
+
+\subsection{Diffuse}
+Diffuse lighting is the lighting calculated for each surface.
+It's strongest whenever the light direction is facing the normal, and so can be calculated
+with the dot product of the two vertices.
+
+\begin{minted}{c++}
+void main() {
+       float ambient = 0.1;
+       vec3 lightDir = normalize(fragPos - lightPos);
+       float diffuse = max(0, dot(-normal, lightDir));
+       FragColor = (ambient + diffuse) * color;
+}
+\end{minted}
+
+\subsection{Specular}
+Specular lighting gives objects a sheen. It takes into account the angle that the surface is being viewed at, 
+so the shader needs this information passed in as a uniform.
+The vector that the light reflects off of the normal is calculated,
+and then if the camera angle/vector is facing at this, then the lighting is intensified exponentially.
+
+\begin{minted}{c++}
+void main() {
+       float ambient = 0.1;
+       vec3 lightDir = normalize(fragPos - lightPos);
+       float diffuse = max(0, dot(-normal, lightDir));
+
+       float specularStrength = 0.5;
+       vec3 viewDir = normalize(fragPos - viewPos);
+       vec3 reflectDir = reflect(-lightDir, normal);
+       float specular = pow(max(0, dot(viewDir, reflectDir)), 256);    
+
+       FragColor = (ambient + diffuse + specular) * color;
+}
+\end{minted}
+
+\section{Multiple shader programs}
+This program uses three shader programs in total:
+
+\begin{enumerate}
+               \item The previous "rainbow" shader program for the pyramids
+               \item A flat "solid" shader for the light source cube which is just one colour with no lighting.
+               \item A normal shader where the fragment depends on the normal, used for the teapot. This shader has lighting
+\end{enumerate}
+
+I was able to reuse the same vector shader for both the rainbow and normal shader, since they took in the same uniforms and inputs.
+To switch between the different programs when drawing, the program calls \mintinline{cpp}{glUseProgram}.
+
+\section{Interesting things}
+The light source is animated, and seems to be correctly updated even when applying transformations such as and scales rotations to the pyramids.
+
+When drawing the four other teapots in the smaller viewports, I found myself having to clear the depth buffer with \mintinline{cpp}{glClear(GL_DEPTH_BUFFER_BIT)} before drawing them, otherwise they would sometimes draw behind the pyramids/big teapot in the main viewport.
+
+\section{Projection}
+I wrote up about projection and the camera in the second assignment report, and so haven't included it here.
+
+\end{document}

diff --git a/assignment-3/specular.png b/assignment-3/specular.png
new file mode 100644 (file)
index 0000000..f51d7e0
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diff --git a/chest.obj b/chest.obj
new file mode 100755 (executable)
index 0000000..fed8fd8
--- /dev/null
+++ b/chest.obj
@@ -0,0 +1,2687 @@
+# Blender v2.71 (sub 0) OBJ File: 'chest.blend'
+# www.blender.org
+mtllib chest.mtl
+o lock_Cube.002
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diff --git a/fragment.glsl b/gradientfrag.glsl
similarity index 100%
rename from fragment.glsl
rename to gradientfrag.glsl

diff --git a/latexMakefile b/latexMakefile
new file mode 100644 (file)
index 0000000..d8f5235
--- /dev/null
+++ b/latexMakefile
@@ -0,0 +1,3 @@
+all: report.pdf
+%.pdf: %.latex
+       pdflatex -shell-escape $<

diff --git a/main.cpp b/main.cpp
index 4c9171ab71a63c726e19996252e402b4e24949e1..003723704f39485a8f84184292a45634ffba1aad 100644 (file)
--- a/main.cpp
+++ b/main.cpp
@@ -14,6 +14,7 @@
 #include <glm/glm.hpp>
 #include <glm/ext.hpp>
 #include <glm/gtc/type_ptr.hpp>
+#include "model.hpp"
 #include "teapot.h"
 
 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
@@ -21,24 +22,25 @@
 using namespace std;
 
 GLuint pyramidVao, lightVao, teapotVao;
-GLuint gradientProgId, solidProgId, normalProgId;
+GLuint gradientProgId, plainProgId, normalProgId, solidProgId;
 glm::vec3 camPos   = glm::vec3(0.0f, 0.0f,  -10.0f);
 glm::vec3 camFront = glm::vec3(0.0f, 0.0f, 1.0f);
 glm::vec3 camUp    = glm::vec3(0.0f, 1.0f,  0.0f);
 float yaw = 1.57, pitch = 0;
 bool doScale, doRotate, doTranslate;
+Model *monkeyHead, *chest;
 
 const int WIDTH = 800, HEIGHT = 600;
 const float ASPECT = (float)WIDTH / (float)HEIGHT;
 
 void setProjectionAndViewUniforms(GLuint progId) {
-       GLuint projId = glGetUniformLocation(progId, "projection");
+       GLuint projLoc = glGetUniformLocation(progId, "projection");
        glm::mat4 proj = glm::perspective(glm::radians(45.f), ASPECT, 0.01f, 10000.f);
-       glUniformMatrix4fv(projId, 1, GL_FALSE, glm::value_ptr(proj));
+       glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(proj));
 
-       GLuint viewId = glGetUniformLocation(progId, "view");
+       GLuint viewLoc = glGetUniformLocation(progId, "view");
        glm::mat4 view = glm::lookAt(camPos, camPos + camFront, camUp);
-       glUniformMatrix4fv(viewId, 1, GL_FALSE, glm::value_ptr(view));
+       glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));
 }
 
 void setLightColorAndPos(GLuint progId, glm::vec3 lightPos, glm::vec4 lightColor) {
@@ -50,15 +52,15 @@ void setLightColorAndPos(GLuint progId, glm::vec3 lightPos, glm::vec4 lightColor
 }
 
 void drawLight(float d, glm::vec3 lightPos, glm::vec4 lightColor) {
-       glUseProgram(solidProgId);
+       glUseProgram(plainProgId);
        glBindVertexArray(lightVao);
-       setProjectionAndViewUniforms(solidProgId);
+       setProjectionAndViewUniforms(plainProgId);
        glm::mat4 model = glm::translate(glm::mat4(1.f), lightPos);
        model = glm::scale(model, glm::vec3(0.2));
-       GLuint modelId = glGetUniformLocation(solidProgId, "model");
-       glUniformMatrix4fv(modelId, 1, GL_FALSE, glm::value_ptr(model));
+       GLuint modelLoc = glGetUniformLocation(plainProgId, "model");
+       glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));
 
-       GLuint colorLoc = glGetUniformLocation(solidProgId, "color");
+       GLuint colorLoc = glGetUniformLocation(plainProgId, "color");
        glm::vec4 color(lightColor);
        glUniform4fv(colorLoc, 1, glm::value_ptr(color));
                
@@ -107,8 +109,8 @@ enum TeapotProjection { teapotOrtho, teapotCamera, teapotPerspStatic, teapotPers
 void drawTeapot(TeapotProjection proj, bool rotate, float d, glm::vec3 lightPos, glm::vec4 lightColor) {
        glUseProgram(normalProgId);
        
-       GLuint projId = glGetUniformLocation(normalProgId, "projection");
-       GLuint viewId = glGetUniformLocation(normalProgId, "view");
+       GLuint projLoc = glGetUniformLocation(normalProgId, "projection");
+       GLuint viewLoc = glGetUniformLocation(normalProgId, "view");
        switch (proj) {
        case teapotCamera:
                setProjectionAndViewUniforms(normalProgId);
@@ -116,11 +118,11 @@ void drawTeapot(TeapotProjection proj, bool rotate, float d, glm::vec3 lightPos,
        case teapotOrtho:
                {
                        glm::mat4 proj = glm::ortho(-5.f * ASPECT, 5.f * ASPECT, -5.f, 5.f, 0.01f, 1000.f);
-                       glUniformMatrix4fv(projId, 1, GL_FALSE, glm::value_ptr(proj));
+                       glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(proj));
 
                        glm::vec3 camPos(-5, 5, -5), camFront = glm::vec3(0) - camPos;
                        glm::mat4 view = glm::lookAt(camPos, camPos + camFront, camUp);
-                       glUniformMatrix4fv(viewId, 1, GL_FALSE, glm::value_ptr(view));
+                       glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));
                }
                break;
        case teapotPerspStatic:
@@ -130,10 +132,10 @@ void drawTeapot(TeapotProjection proj, bool rotate, float d, glm::vec3 lightPos,
                        if (proj == teapotPerspAnimated)
                                fov += glm::radians(sin(d) * 30.f);
                        glm::mat4 proj = glm::perspective(fov, ASPECT, 0.01f, 10000.f);
-                       glUniformMatrix4fv(projId, 1, GL_FALSE, glm::value_ptr(proj));
+                       glUniformMatrix4fv(projLoc, 1, GL_FALSE, glm::value_ptr(proj));
 
                        glm::mat4 view = glm::lookAt(glm::vec3(0, 0, -10), glm::vec3(0), camUp);
-                       glUniformMatrix4fv(viewId, 1, GL_FALSE, glm::value_ptr(view));
+                       glUniformMatrix4fv(viewLoc, 1, GL_FALSE, glm::value_ptr(view));
                }
                break;
        }
@@ -157,23 +159,40 @@ void display() {
        glm::vec4 lightColor(1, 1, 1, 1);
 
        glViewport(0, 0, WIDTH, HEIGHT);
-       drawPyramids(d, lightPos, lightColor);
+       /* drawPyramids(d, lightPos, lightColor); */
        drawLight(d, lightPos, lightColor);
-       drawTeapot(teapotCamera, false, d, lightPos, lightColor);
 
-       glClear(GL_DEPTH_BUFFER_BIT);
+       glUseProgram(solidProgId);
+       setProjectionAndViewUniforms(solidProgId);
+       setLightColorAndPos(solidProgId, lightPos, lightColor);
+       GLuint colorLoc = glGetUniformLocation(solidProgId, "color");
+       glm::vec4 c(1.f, 0, 1.f, 1.f);
+       glUniform4fv(colorLoc, 1, glm::value_ptr(c));
+       GLuint modelLoc = glGetUniformLocation(solidProgId, "model");
+       glm::mat4 model(1);
+       model = glm::scale(model, glm::vec3(2.0));
+       glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));
+       monkeyHead->draw();
+       model = glm::translate(model, glm::vec3(3, 0, 0));
+       glUniformMatrix4fv(modelLoc, 1, GL_FALSE, glm::value_ptr(model));
+       chest->draw();
+       
+       /* drawTeapot(teapotCamera, false, d, lightPos, lightColor); */
 
-       glViewport(0, 0, WIDTH / 4, HEIGHT / 4);
-       drawTeapot(teapotOrtho, false, d, lightPos, lightColor);
+       /* glClear(GL_DEPTH_BUFFER_BIT); */
 
-       glViewport(WIDTH / 4, 0, WIDTH / 4, HEIGHT / 4);
-       drawTeapot(teapotOrtho, true, d, lightPos, lightColor);
+       /* glViewport(0, 0, WIDTH / 4, HEIGHT / 4); */
+       /* drawTeapot(teapotOrtho, false, d, lightPos, lightColor); */
 
-       glViewport(WIDTH / 4 * 2, 0, WIDTH / 4, HEIGHT / 4);
-       drawTeapot(teapotPerspStatic, false, d, lightPos, lightColor);
+       /* glViewport(WIDTH / 4, 0, WIDTH / 4, HEIGHT / 4); */
+       /* drawTeapot(teapotOrtho, true, d, lightPos, lightColor); */
+
+       /* glViewport(WIDTH / 4 * 2, 0, WIDTH / 4, HEIGHT / 4); */
+       /* drawTeapot(teapotPerspStatic, false, d, lightPos, lightColor); */
+
+       /* glViewport(WIDTH / 4 * 3, 0, WIDTH / 4, HEIGHT / 4); */
+       /* drawTeapot(teapotPerspAnimated, false, d, lightPos, lightColor); */
 
-       glViewport(WIDTH / 4 * 3, 0, WIDTH / 4, HEIGHT / 4);
-       drawTeapot(teapotPerspAnimated, false, d, lightPos, lightColor);
 
        glutSwapBuffers();
 }
@@ -452,23 +471,30 @@ void init() {
                }
        }
 
-       gradientProgId = compileShaders((char*)"vertex.glsl", (char*)"fragment.glsl");
+       gradientProgId = compileShaders((char*)"vertex.glsl", (char*)"gradientfrag.glsl");
        glUseProgram(gradientProgId);
        pyramidVao = setupBuffers(vertices, normals, gradientProgId);
        validateProgram(gradientProgId);
 
-       solidProgId = compileShaders((char*)"solidvertex.glsl", (char*)"solidfrag.glsl");
-       glUseProgram(solidProgId);
-       setupLightBuffers(solidProgId);
-       validateProgram(solidProgId);
+       plainProgId = compileShaders((char*)"plainvertex.glsl", (char*)"plainfrag.glsl");
+       glUseProgram(plainProgId);
+       setupLightBuffers(plainProgId);
+       validateProgram(plainProgId);
 
        normalProgId = compileShaders((char*)"vertex.glsl", (char*)"normalfrag.glsl");
        glUseProgram(normalProgId);
        setupTeapotBuffers(normalProgId);
        validateProgram(normalProgId);
 
+       solidProgId = compileShaders((char*)"vertex.glsl", (char*)"solidfrag.glsl");
+       glUseProgram(solidProgId);
+       validateProgram(solidProgId);
+
+       monkeyHead = new Model("monkeyhead_smooth.dae", solidProgId);
+       chest = new Model("chest.obj", solidProgId);
+
        glEnable(GL_DEPTH_TEST); 
-       glEnable(GL_CULL_FACE); 
+       /* glEnable(GL_CULL_FACE); */ 
 }
 
 bool* keyStates = new bool[256];

diff --git a/model.cpp b/model.cpp
new file mode 100644 (file)
index 0000000..29e3d8a
--- /dev/null
+++ b/model.cpp
@@ -0,0 +1,78 @@
+#include "model.hpp"
+#include <iostream>
+#include <assimp/Importer.hpp>
+#include <assimp/scene.h>
+#include <assimp/postprocess.h>
+
+Model::Mesh::Mesh(const aiMesh *aiMesh, GLuint progId) {
+       for (int i = 0; i < aiMesh->mNumVertices; i++) {
+               if (aiMesh->HasPositions()) {
+                       aiVector3D v = aiMesh->mVertices[i];
+                       vertices.push_back(glm::vec3(v.x, v.y, v.z));
+               }
+               if (aiMesh->HasNormals()) {
+                       const aiVector3D v = aiMesh->mNormals[i];
+                       normals.push_back(glm::vec3(v.x, v.y, v.z));
+               }
+               // check for texture coord set 0
+               if (aiMesh->HasTextureCoords(0)) {
+                       const aiVector3D v = aiMesh->mTextureCoords[0][i];
+                       texCoords.push_back(glm::vec2(v.x, v.y));
+               }
+       }
+
+       for (int i = 0; i < aiMesh->mNumFaces; i++) {
+               const aiFace &face = aiMesh->mFaces[i];
+               if(face.mNumIndices == 3) {
+                       indices.push_back(face.mIndices[0]);
+                       indices.push_back(face.mIndices[1]);
+                       indices.push_back(face.mIndices[2]);
+               }
+       }
+       
+       glGenVertexArrays(1, &vao);
+       glBindVertexArray(vao);
+       
+       GLuint vbos[3];
+       glGenBuffers(3, vbos);
+       vertexVbo = vbos[0], normalVbo = vbos[1], indicesVbo = vbos[2];
+       
+       GLuint posLoc = glGetAttribLocation(progId, "vPosition");
+       GLuint normalLoc = glGetAttribLocation(progId, "vNormal");
+       
+       glBindBuffer(GL_ARRAY_BUFFER, vertexVbo);
+       glBufferData(GL_ARRAY_BUFFER, vertices.size() * sizeof(glm::vec3), &vertices[0], GL_STATIC_DRAW);
+       glEnableVertexAttribArray(posLoc);
+       glVertexAttribPointer(posLoc, 3, GL_FLOAT, GL_FALSE, 0, 0);
+       
+       glBindBuffer(GL_ARRAY_BUFFER, normalVbo);
+       glBufferData(GL_ARRAY_BUFFER, normals.size() * sizeof(glm::vec3), &normals[0], GL_STATIC_DRAW);
+       glEnableVertexAttribArray(normalLoc);
+       glVertexAttribPointer(normalLoc, 3, GL_FLOAT, GL_FALSE, 0, 0);
+
+       glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indicesVbo);
+       glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(GLuint), &indices[0], GL_STATIC_DRAW);
+};
+
+void Model::loadModel(const std::string &file) {
+       Assimp::Importer importer;
+       const aiScene *scene = importer.ReadFile(file, 
+                       aiProcess_Triangulate | aiProcess_PreTransformVertices |
+                       aiProcess_GenNormals);
+       if (!scene) {
+               std::cerr << importer.GetErrorString() << std::endl;
+               exit(1);
+       }
+
+       for (int i = 0; i < scene->mNumMeshes; i++) {
+               const aiMesh *mesh = scene->mMeshes[i];
+               meshes.push_back(Mesh(mesh, progId));
+       }
+}
+
+void Model::draw() {
+       for (Mesh &mesh: meshes) {
+               glBindVertexArray(mesh.vao);
+               glDrawElements(GL_TRIANGLES, mesh.indices.size(), GL_UNSIGNED_INT, 0);
+       }
+}

diff --git a/model.hpp b/model.hpp
new file mode 100644 (file)
index 0000000..0339538
--- /dev/null
+++ b/model.hpp
@@ -0,0 +1,32 @@
+#include <vector>
+#ifdef __APPLE__
+#include <GL/glew.h>
+#else
+#include <OpenGL/glew.h>
+#endif
+#include <glm/glm.hpp>
+#include <assimp/scene.h>
+
+class Model {
+       public:
+               Model(const std::string &path, GLuint progId): progId(progId) {
+                       loadModel(path);
+               }
+               void draw();
+       private:
+               const GLuint progId;
+
+               struct Mesh {
+                       Mesh(const aiMesh *aiMesh, GLuint progId);
+                       
+                       GLuint vao, vertexVbo, normalVbo, indicesVbo;
+
+                       std::vector<glm::vec3> vertices;
+                       std::vector<glm::vec3> normals;
+                       std::vector<glm::vec2> texCoords;
+                       std::vector<GLuint> indices;
+               };
+               
+               std::vector<Mesh> meshes;
+               void loadModel(const std::string &path);
+};

diff --git a/monkeyhead_smooth.dae b/monkeyhead_smooth.dae
new file mode 100755 (executable)
index 0000000..dd8265a
--- /dev/null
+++ b/monkeyhead_smooth.dae
@@ -0,0 +1,61 @@
+<?xml version="1.0" encoding="utf-8"?>
+<COLLADA xmlns="http://www.collada.org/2005/11/COLLADASchema" version="1.4.1">
+  <asset>
+    <contributor>
+      <author>Blender User</author>
+      <authoring_tool>Blender 2.74.0 commit date:2015-03-31, commit time:13:39, hash:000dfc0</authoring_tool>
+    </contributor>
+    <created>2018-10-15T14:19:34</created>
+    <modified>2018-10-15T14:19:34</modified>
+    <unit name="meter" meter="1"/>
+    <up_axis>Z_UP</up_axis>
+  </asset>
+  <library_images/>
+  <library_geometries>
+    <geometry id="Suzanne_002-mesh" name="Suzanne.002">
+      <mesh>
+        <source id="Suzanne_002-mesh-positions">
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25 56 64 54 54 23 26 25 30 55 53 56 64 22 25 58 56 57 55 59 57 23 26 58 56 12 16 62 58 59 57 63 59 13 19 62 58 10 14 64 60 63 59 65 61 11 15 64 60 0 1 48 47 65 61 49 49 1 4 173 66 175 68 90 67 174 69 89 73 90 67 171 71 173 66 88 65 172 72 87 299 89 73 86 70 84 74 171 71 87 299 172 72 85 77 84 74 82 78 169 75 85 77 170 76 83 81 82 78 80 82 167 79 83 81 168 80 81 85 163 143 78 86 145 88 164 144 146 89 79 91 93 92 147 138 145 88 94 94 92 90 146 89 147 138 93 92 149 96 148 93 150 97 94 94 97 99 151 103 149 96 98 101 96 98 150 97 99 102 153 107 151 103 100 105 98 101 152 100 101 106 155 130 153 107 102 109 100 105 154 104 155 130 101 106 157 111 156 108 158 112 102 109 105 114 159 118 157 111 106 116 104 113 158 112 107 117 161 122 159 118 108 120 106 116 160 115 66 121 67 123 161 122 66 121 108 120 162 119 127 125 159 118 161 122 128 126 110 245 162 119 159 118 127 125 157 111 160 115 158 112 128 126 155 130 157 111 178 127 156 108 126 132 179 128 153 107 155 130 125 129 154 104 124 134 126 132 151 103 153 107 123 131 152 100 122 136 124 134 149 96 151 103 121 133 150 97 120 139 122 136 147 138 149 96 119 135 148 93 118 141 120 139 145 88 147 138 117 137 146 89 116 231 118 141 115 140 113 142 145 88 116 231 146 89 114 145 163 143 113 142 176 147 164 144 176 147 114 145 161 122 67 123 111 149 162 119 110 245 112 150 182 220 111 149 177 151 183 152 177 151 112 150 180 146 182 220 177 151 181 148 176 147 177 151 173 66 134 153 175 68 174 69 175 68 135 155 171 71 132 156 173 66 172 72 174 69 133 157 132 156 171 71 169 75 133 157 131 163 170 76 167 79 165 83 184 160 168 80 185 161 166 84 184 160 130 158 167 79 185 161 168 80 131 163 189 165 188 166 186 159 189 165 144 185 187 162 186 159 188 166 68 167 187 162 185 161 68 167 130 158 184 160 68 167 131 163 129 168 68 167 143 164 141 169 190 171 144 185 191 172 142 174 194 176 192 170 141 169 195 177 140 181 142 174 196 179 194 176 139 175 197 180 138 178 140 181 70 183 196 179 138 178 143 164 190 171 69 184 144 185 189 165 69 184 190 171 205 195 207 186 191 172 69 184 207 186 196 179 70 183 199 189 197 180 200 190 70 183 194 176 196 179 201 191 195 177 202 192 197 180 201 191 203 194 192 170 202 192 195 177 193 173 190 171 192 170 205 195 191 172 206 187 193 173 203 194 201 191 199 189 204 193 198 188 200 190 203 194 198 188 205 195 204 193 206 187 198 188 176 147 138 178 163 143 176 147 164 144 138 178 163 143 139 175 210 196 164 144 211 197 140 181 143 164 212 199 210 196 144 185 142 174 211 197 186 159 165 83 212 199 187 162 144 185 213 198 208 200 212 199 165 83 209 201 81 85 166 84 214 202 210 196 212 199 215 203 209 201 213 198 214 202 78 86 210 196 215 203 211 197 79 91 129 168 71 205 221 204 129 168 131 163 222 206 219 207 132 156 221 204 220 208 222 206 133 157 217 209 134 153 219 207 218 210 220 208 135 155 216 211 136 154 217 209 216 211 218 210 136 154 217 209 228 219 230 212 218 210 216 211 230 212 228 219 217 209 226 214 229 213 227 215 218 210 226 214 219 207 224 216 227 215 225 217 220 208 71 205 223 218 224 216 71 205 222 206 225 217 224 216 223 218 228 219 225 217 229 213 223 218 231 223 182 220 233 221 232 224 234 222 183 152 253 265 111 149 231 223 254 226 232 224 112 150 111 149 253 265 255 225 112 150 110 245 256 227 113 142 251 262 233 221 114 145 181 148 234 222 251 262 113 142 249 229 252 228 250 230 114 145 249 229 115 140 247 232 250 230 248 233 116 231 247 232 117 137 245 234 248 233 246 235 118 141 245 234 119 135 243 236 246 235 244 237 120 139 123 131 241 239 243 236 124 134 122 136 244 237 125 129 239 250 241 239 126 132 124 134 242 238 239 250 125 129 235 241 240 240 236 242 126 132 235 241 178 127 237 243 236 242 238 244 179 128 237 243 127 125 255 225 238 244 256 227 128 126 275 248 237 243 257 246 276 249 258 247 238 244 277 504 235 241 275 248 278 252 276 249 236 242 235 241 277 504 273 251 236 242 240 240 274 253 239 250 273 251 271 254 240 240 242 238 272 255 269 505 243 236 271 254 270 257 272 255 244 237 243 236 269 505 267 256 244 237 246 235 268 258 265 506 247 232 267 256 266 260 268 258 248 233 247 232 265 506 263 259 248 233 250 230 264 261 249 229 263 259 261 263 250 230 252 228 262 264 279 270 233 221 261 263 280 271 262 264 234 222 257 246 255 225 259 266 258 247 260 267 256 227 259 266 253 265 281 268 260 267 282 269 254 226 281 268 231 223 279 270 282 269 280 271 232 224 72 364 66 121 283 272 72 364 284 273 66 121 283 272 107 117 285 274 284 273 286 275 108 120 103 110 287 277 285 274 104 113 106 116 286 275 101 106 289 279 287 277 102 109 104 113 288 276 99 102 291 341 289 279 100 105 102 109 290 278 291 341 99 102 293 281 292 280 294 282 100 105 95 95 295 326 293 281 96 98 98 101 294 282 295 326 95 95 297 284 296 283 298 285 96 98 297 284 93 92 299 286 298 285 300 287 94 94 308 289 327 306 337 290 308 289 307 288 338 292 307 288 337 290 335 294 307 288 306 293 336 295 306 293 335 294 339 297 306 293 305 296 340 298 339 297 88 65 305 296 340 298 305 296 89 73 333 300 86 70 339 297 334 301 340 298 87 299 329 302 84 74 333 300 330 303 334 301 85 77 331 305 82 78 329 302 332 307 330 303 83 81 331 305 329 302 337 290 332 307 338 292 330 303 333 300 339 297 335 294 334 301 330 303 336 295 331 305 337 290 327 306 332 307 326 311 328 291 325 304 80 82 331 305 326 311 332 307 81 85 341 308 343 376 214 202 342 310 209 201 215 203 325 304 341 308 208 200 326 311 81 85 209 201 214 202 343 376 345 312 215 203 79 91 346 313 345 312 299 286 91 87 346 313 79 91 92 90 323 315 351 319 303 316 324 318 76 314 303 316 351 319 349 322 77 320 352 317 303 316 77 320 304 325 77 320 347 323 304 325 348 324 77 320 308 289 304 325 327 306 308 289 328 291 304 325 327 306 347 323 341 308 328 291 326 311 342 310 309 366 295 326 317 327 310 365 318 328 296 283 315 330 323 315 76 314 316 331 75 329 76 314 357 333 355 337 302 334 358 336 301 332 302 334 74 340 302 334 353 338 74 340 354 339 302 334 75 329 74 340 315 330 75 329 316 331 74 340 363 344 291 341 361 342 364 347 362 343 292 280 365 348 363 344 367 345 366 351 368 346 364 347 371 352 365 348 369 349 372 355 370 350 366 351 373 360 371 352 375 353 374 358 376 354 372 355 377 357 373 360 375 353 378 359 314 502 376 354 377 357 315 330 373 360 378 359 374 358 316 331 373 360 353 338 371 352 374 358 372 355 354 339 371 352 355 337 365 348 372 355 366 351 356 335 365 348 357 333 363 344 366 351 364 347 358 336 291 341 363 344 359 361 292 280 290 278 360 362 359 361 357 333 301 332 360 362 73 363 301 332 285 274 287 277 289 279 286 275 284 273 290 278 73 363 283 272 359 361 73 363 360 362 284 273 295 326 309 366 361 342 296 283 294 282 362 343 361 342 309 366 367 345 362 343 368 346 310 365 367 345 311 367 369 349 368 346 370 350 312 368 375 353 369 349 381 369 376 354 314 502 382 370 349 322 385 380 383 371 350 321 348 324 384 373 383 371 385 380 319 374 384 373 318 328 320 375 317 327 297 284 383 371 318 328 384 373 298 285 383 371 299 286 341 308 384 373 342 310 300 287 321 377 379 381 377 357 322 379 314 502 378 359 377 357 379 381 323 315 378 359 316 331 324 318 385 380 379 381 321 377 386 372 320 375 322 379 351 319 379 381 385 380 352 317 350 321 386 372 387 383 413 418 401 384 388 386 400 390 402 387 397 391 399 382 403 388 398 497 404 389 400 390 403 388 405 395 395 392 404 389 398 497 396 394 405 395 407 399 393 396 406 393 396 394 394 398 407 399 409 403 391 400 408 397 394 398 392 402 389 424 391 400 411 404 390 426 412 405 392 402 411 404 409 403 417 407 412 405 418 408 410 401 409 403 407 399 419 406 410 401 420 409 408 397 423 412 421 410 407 399 424 413 406 393 408 397 425 414 423 412 405 395 426 415 404 389 406 393 427 416 425 414 403 388 428 417 402 387 404 389 427 416 401 384 415 419 428 417 416 420 402 387 319 374 443 425 441 421 320 375 318 328 442 423 389 424 411 404 443 425 390 426 320 375 444 422 311 367 309 366 441 421 312 368 442 423 310 365 387 383 381 369 413 418 388 386 414 385 382 370 443 425 411 404 439 429 444 422 440 430 412 405 445 432 443 425 439 429 446 433 438 435 440 430 435 448 433 434 437 431 436 450 438 435 434 436 447 438 445 432 433 434 448 439 432 441 434 436 447 438 431 437 449 440 448 439 430 428 450 442 429 427 449 440 415 419 430 428 414 385 416 420 447 438 429 427 381 369 448 439 312 368 382 370 441 421 445 432 447 438 442 423 312 368 448 439 475 457 415 419 451 443 476 458 452 444 416 420 431 437 461 484 451 443 432 441 450 442 452 444 461 484 431 437 459 446 462 445 460 447 432 441 435 448 457 451 459 446 436 450 434 436 460 447 437 431 455 468 457 451 438 435 436 450 458 449 455 468 437 431 453 453 456 452 454 454 438 435 453 453 439 429 473 455 454 454 474 456 440 430 463 459 427 416 475 457 464 460 476 458 428 417 465 461 425 414 463 459 466 462 464 460 426 415 467 485 423 412 465 461 468 464 466 462 424 413 423 412 467 485 469 463 424 413 422 411 470 465 421 410 469 463 471 466 422 411 420 409 472 467 419 406 471 466 473 455 420 409 418 408 474 456 455 468 479 472 477 469 456 452 458 449 478 471 479 472 481 476 483 473 480 470 478 471 484 475 485 479 483 473 487 477 486 483 488 478 484 475 487 477 489 486 491 480 488 478 486 483 492 482 491 480 463 459 485 479 492 482 486 483 464 460 483 473 485 479 475 457 484 475 452 444 476 458 461 484 477 469 483 473 462 445 452 444 484 475 459 446 457 451 461 484 460 447 462 445 458 449 473 455 479 472 455 468 474 456 454 454 456 452 473 455 471 466 479 472 474 456 480 470 472 467 487 477 481 476 471 466 488 478 470 465 472 467 489 486 487 477 469 463 490 481 468 464 470 465 467 485 465 461 489 486 468 464 490 481 466 462 501 489 391 400 503 487 502 490 504 488 392 402 499 501 393 396 501 489 500 492 502 490 394 398 393 396 499 501 497 491 394 398 396 394 498 493 395 392 497 491 495 494 396 394 398 497 496 495 397 391 495 494 493 496 398 497 400 390 494 498 399 382 493 496 505 499 400 390 388 386 506 500 501 489 503 487 505 499 502 490 494 498 506 500 501 489 493 496 499 501 502 490 500 492 494 498 381 369 387 383 505 499 382 370 314 502 506 500 321 377 313 356 503 487 322 379 504 488 314 502 389 424 319 374 503 487 390 426 504 488 320 375</p>
+        </polylist>
+      </mesh>
+    </geometry>
+  </library_geometries>
+  <library_controllers/>
+  <library_visual_scenes>
+    <visual_scene id="Scene" name="Scene">
+      <node id="Suzanne" name="Suzanne" type="NODE">
+        <matrix sid="transform">0.9999999 0 0 0 0 -1.62921e-7 -1 0 0 1 -1.62921e-7 0 0 0 0 1</matrix>
+        <instance_geometry url="#Suzanne_002-mesh"/>
+      </node>
+    </visual_scene>
+  </library_visual_scenes>
+  <scene>
+    <instance_visual_scene url="#Scene"/>
+  </scene>
+</COLLADA>
\ No newline at end of file

diff --git a/plainfrag.glsl b/plainfrag.glsl
new file mode 100644 (file)
index 0000000..f9b91ba
--- /dev/null
+++ b/plainfrag.glsl
@@ -0,0 +1,6 @@
+#version 330
+uniform vec4 color;
+out vec4 FragColor;
+void main() {
+  FragColor = color;
+}

diff --git a/solidvertex.glsl b/plainvertex.glsl
similarity index 100%
rename from solidvertex.glsl
rename to plainvertex.glsl

diff --git a/solidfrag.glsl b/solidfrag.glsl
index f9b91ba4d0f2fb16b7515f808730d0df7f10b4a6..fa00e7aa2e7ed8f0021774fa525665937ab65f5b 100644 (file)
--- a/solidfrag.glsl
+++ b/solidfrag.glsl
@@ -1,6 +1,24 @@
 #version 330
+in vec3 normal;
+in vec3 fragPos;
+uniform vec3 lightPos;
+uniform vec3 viewPos;
+uniform vec4 lightColor;
 uniform vec4 color;
 out vec4 FragColor;
+
 void main() {
-  FragColor = color;
+       float ambient = 0.1;
+       float specularStrength = 0.5;
+       vec3 lightDir = normalize(fragPos - lightPos);
+       float diffuse = max(0, dot(-normal, lightDir));
+
+       vec3 viewDir = normalize(fragPos - viewPos);
+       vec3 reflectDir = reflect(-lightDir, normal);
+       float specular = pow(max(0, dot(viewDir, reflectDir)), 128);
+
+       vec4 lighting = (ambient + diffuse + specular) * lightColor;
+
+       FragColor = lighting * color;
 }
+