added normals

src/graphics/arrays.cpp

@@ -29,5 +29,8 @@ void arrays::vertex_attrib_pointers()
 
 	glVertexAttribPointer(2, 3, GL_FLOAT, false, sizeof(v), ptr_diff(&v.pos, &v));
 	glEnableVertexAttribArray(2);
+
+	glVertexAttribPointer(3, 3, GL_FLOAT, false, sizeof(v), ptr_diff(&v.normal, &v));
+	glEnableVertexAttribArray(3);
 }
 

src/graphics/arrays.hpp

@@ -12,6 +12,7 @@ struct vertex
 	unsigned long texid = 0;
 	glm::vec2 texpos = {0, 0};
 	glm::vec3 pos = {0, 0, 0};
+	glm::vec3 normal = {0, 0, 0};
 
 	vertex() { }
 	vertex(unsigned long texid, glm::vec2 texpos, glm::vec3 pos) : texid(texid), texpos(texpos), pos(pos) { }

src/graphics/camera.cpp

@@ -16,8 +16,8 @@ static double x = 0, y = 0, z = 0;
 
 void camera::rotate(double y, double p)
 {
-	yaw += y * 0.1;
-	pitch += p * 0.1;
+	yaw += y * 0.05;
+	pitch += p * 0.05;
 
 	if(pitch < -90) pitch = -90;
 	if(pitch > 90) pitch = 90;
@@ -37,34 +37,17 @@ void camera::update()
 	glm::vec<3, double> off(0, 0, 0);
 	
 	if(keyboard::is_pressed(GLFW_KEY_SPACE))
-	{
 		off.y -= 1;
-	}
-
 	if(keyboard::is_pressed(GLFW_KEY_LEFT_SHIFT))
-	{
 		off.y += 1;
-	}
-
 	if(keyboard::is_pressed(GLFW_KEY_W))
-	{
 		off.z += 1;
-	}
-
 	if(keyboard::is_pressed(GLFW_KEY_S))
-	{
 		off.z -= 1;
-	}
-
 	if(keyboard::is_pressed(GLFW_KEY_A))
-	{
 		off.x += 1;
-	}
-
 	if(keyboard::is_pressed(GLFW_KEY_D))
-	{
 		off.x -= 1;
-	}
 
 	double angle = -glm::radians<double>(yaw);
 
@@ -75,12 +58,12 @@ void camera::update()
 	
 	glm::vec<2, double> rotated = glm::vec<2, double>(off.x, off.z) * mat;
 	
-	y += off.y * 0.1;
-	x += rotated.x * 0.1;
-	z += rotated.y * 0.1;
+	y += off.y * 0.05;
+	x += rotated.x * 0.05;
+	z += rotated.y * 0.05;
 }
 
-glm::mat4 camera::get()
+glm::mat4 camera::get_model_matrix()
 {
 	glm::mat4 mat(1);
 

src/graphics/camera.hpp

@@ -2,11 +2,12 @@
 #pragma once
 
 #include <glm/matrix.hpp>
+#include <glm/vec3.hpp>
 
 namespace sim::graphics::camera
 {
 
-glm::mat4 get();
+glm::mat4 get_model_matrix();
 void rotate(double pitch, double yaw);
 void move(double x, double y, double z);
 void update();

src/graphics/mesh.cpp

@@ -0,0 +1,62 @@
+
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+
+#include "mesh.hpp"
+#include "arrays.hpp"
+#include <iostream>
+
+using namespace sim::graphics;
+
+mesh::mesh()
+{
+	glGenVertexArrays(1, &vao);
+	glGenBuffers(1, &vbo);
+	glGenBuffers(1, &ebo);
+
+	glBindVertexArray(vao);
+	glBindBuffer(GL_ARRAY_BUFFER, vbo);
+	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
+
+	arrays::vertex_attrib_pointers();
+}
+
+mesh::mesh(mesh&& o)
+{
+	vbo = o.vbo;
+	ebo = o.ebo;
+	vao = o.vao;
+	size = o.size;
+	o.vbo = 0;
+	o.ebo = 0;
+	o.vao = 0;
+}
+
+mesh::~mesh()
+{
+	if(vbo) glDeleteBuffers(1, &vbo);
+	if(ebo) glDeleteBuffers(1, &ebo);
+	if(vao) glDeleteVertexArrays(1, &vao);
+}
+
+void mesh::set_vertices(const arrays::vertex* data, size_t size, int mode)
+{
+	glBufferData(GL_ARRAY_BUFFER, size * sizeof(data[0]), data, mode);
+}
+
+void mesh::set_indices(const unsigned int* data, size_t size, int mode)
+{
+	glBufferData(GL_ELEMENT_ARRAY_BUFFER, size * sizeof(data[0]), data, mode);
+	this->size = size;
+}
+
+void mesh::bind() const
+{
+	glBindVertexArray(vao);
+}
+
+void mesh::render() const
+{
+	glDrawElements(GL_TRIANGLES, size, GL_UNSIGNED_INT, 0);
+}
+

src/graphics/mesh.hpp

@@ -0,0 +1,25 @@
+
+#pragma once
+
+#include "arrays.hpp"
+
+namespace sim::graphics
+{
+
+struct mesh
+{
+	unsigned int vao = 0, vbo = 0, ebo = 0, size = 0;
+
+	mesh();
+	mesh(mesh&& o);
+	mesh(const mesh& o) = delete;
+	~mesh();
+
+	void bind() const;
+	void set_vertices(const arrays::vertex* data, size_t size, int mode);
+	void set_indices(const unsigned int* data, size_t size, int mode);
+	void render() const;
+};
+
+};
+

src/graphics/model.cpp

@@ -8,115 +8,74 @@
 
 #include <vector>
 
+#include "mesh.hpp"
 #include "model.hpp"
 #include "arrays.hpp"
 
 using namespace sim::graphics;
 
-model::model()
+static void proc_mesh(std::vector<mesh>& meshes, aiMesh* mesh, const aiScene* scene)
 {
-	
-}
-
-model::~model()
-{
-	if(vbo) glDeleteBuffers(1, &vbo);
-	if(ebo) glDeleteBuffers(1, &ebo);
-	if(vao) glDeleteVertexArrays(1, &vao);
-}
-
-void model::alloc()
-{
-	glGenVertexArrays(1, &vao);
-	glGenBuffers(1, &vbo);
-	glGenBuffers(1, &ebo);
-
-	glBindVertexArray(vao);
-	glBindBuffer(GL_ARRAY_BUFFER, vbo);
-	glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
-
-	arrays::vertex_attrib_pointers();
-}
-
-void model::load_vbo(const arrays::vertex* data, size_t size, int mode)
-{
-	glBufferData(GL_ARRAY_BUFFER, size * sizeof(data[0]), data, mode);
-}
-
-void model::load_ebo(const unsigned int* data, size_t size, int mode)
-{
-	glBufferData(GL_ELEMENT_ARRAY_BUFFER, size * sizeof(data[0]), data, mode);
-	this->size = size;
-}
-
-struct proc_state
-{
-	size_t at = 0;
 	std::vector<arrays::vertex> vertices;
 	std::vector<unsigned int> indices;
-};
-
-static void proc_mesh(proc_state& state, aiMesh* mesh, const aiScene* scene)
-{
+	
 	for(unsigned int i = 0; i < mesh->mNumVertices; i++)
 	{
 		arrays::vertex vertex;
 
 		vertex.pos = {mesh->mVertices[i].x, mesh->mVertices[i].y, mesh->mVertices[i].z};
 
-		state.vertices.push_back(vertex);
-	}
+		if(mesh->HasNormals())
+		{
+			vertex.normal = {mesh->mNormals[i].x, mesh->mNormals[i].y, mesh->mNormals[i].z};
+		}
 
-	unsigned int at = state.at;
+		vertices.push_back(vertex);
+	}
 
 	for(unsigned int i = 0; i < mesh->mNumFaces; i++)
 	{
 		aiFace face = mesh->mFaces[i];
-		unsigned int j;
 		
-		for(j = 0; j < face.mNumIndices; j++)
+		for(unsigned int j = 0; j < face.mNumIndices; j++)
 		{
-			state.indices.push_back(face.mIndices[j] + state.at);
+			indices.push_back(face.mIndices[j]);
 		}
-
-		at += j;
 	}
 
-	state.at = at;
+	sim::graphics::mesh m;
+	m.set_vertices(&vertices[0], vertices.size(), GL_STATIC_DRAW);
+	m.set_indices(&indices[0], indices.size(), GL_STATIC_DRAW);
+	meshes.push_back(std::move(m));
 }
 
-static void proc_node(proc_state& state, aiNode* node, const aiScene* scene)
+static void proc_node(std::vector<mesh>& meshes, aiNode* node, const aiScene* scene)
 {
 	for(size_t i = 0; i < node->mNumMeshes; i++)
 	{
 		aiMesh* mesh = scene->mMeshes[node->mMeshes[i]];
-		proc_mesh(state, mesh, scene);
+		proc_mesh(meshes, mesh, scene);
 	}
 
 	for(size_t i = 0; i < node->mNumChildren; i++)
 	{
-		proc_node(state, node->mChildren[i], scene);
+		proc_node(meshes, node->mChildren[i], scene);
 	}
 }
 
 void model::load(const char* path)
 {
-	proc_state state;
 	Assimp::Importer importer;
 	const aiScene *scene = importer.ReadFile(path, aiProcess_Triangulate | aiProcess_FlipUVs);
-	proc_node(state, scene->mRootNode, scene);
-
-	load_vbo(&state.vertices[0], state.vertices.size(), GL_STATIC_DRAW);
-	load_ebo(&state.indices[0], state.indices.size(), GL_STATIC_DRAW);
+	proc_node(meshes, scene->mRootNode, scene);
 }
 
-void model::bind()
+void model::render() const
 {
-	glBindVertexArray(vao);
-}
-
-void model::render()
-{
-	glDrawElements(GL_TRIANGLES, size, GL_UNSIGNED_INT, 0);
+	for(const mesh& m : meshes)
+	{
+		m.bind();
+		m.render();
+	}
 }
 

src/graphics/model.hpp

@@ -1,24 +1,19 @@
 
 #pragma once
 
-#include "arrays.hpp"
+#include "mesh.hpp"
+
+#include <vector>
 
 namespace sim::graphics
 {
 
 struct model
 {
-	unsigned int vao = 0, vbo = 0, ebo = 0, size = 0;
+	std::vector<mesh> meshes;
 
-	model();
-	~model();
-
-	void bind();
-	void alloc();
 	void load(const char* path);
-	void load_vbo(const arrays::vertex* data, size_t size, int mode);
-	void load_ebo(const unsigned int* data, size_t size, int mode);
-	void render();
+	void render() const;
 };
 
 };

src/graphics/shader.cpp

@@ -16,6 +16,7 @@ static const char* VERTEX_SHADER = R"(
 layout (location = 0) in sampler2D aTex;
 layout (location = 1) in vec2 aTexPos;
 layout (location = 2) in vec3 aPos;
+layout (location = 3) in vec3 aNormal;
 
 uniform mat4 model;
 uniform mat4 projection;
@@ -27,10 +28,16 @@ out float zVal;
 void main()
 {
 	vec4 pos = model * vec4(aPos, 1.0);
+
+	mat3 model_norm = mat3(model);
+	vec3 normal = aNormal;
+	vec3 cNormal = vec3(0.f, 0.f, 1.f) * model_norm;
+
+	zVal = dot(normal, cNormal);// / (length(aNormal) * length(cNormal));
+
 	gl_Position = projection * pos;
 	texPos = aTexPos;
 	tex = aTex;
-	zVal = 8.0f / (pos.z * pos.z);
 }
 
 )";

src/graphics/window.cpp

@@ -66,8 +66,7 @@ void window::create()
 
 	shader::init_program();
 
-	Model.alloc();
-	Model.load("monkey.obj");
+	Model.load("teapot.obj");
 
 	glViewport(0, 0, 800, 600);
 }
@@ -86,13 +85,14 @@ void window::loop()
 
 	camera::update();
 
-	glm::mat4 mat_model = camera::get();
+	glm::mat4 mat_model = camera::get_model_matrix();
 
 	double mouse_x, mouse_y;
 	mouse::get(mouse_x, mouse_y);
 	
 	mat_model = glm::translate(mat_model, glm::vec3(0.0f, 0.0f, -5.0f));
 	mat_model = glm::rotate(mat_model, float(M_PI * 0.125), glm::vec3(1, 1, 1));
+	mat_model = glm::scale(mat_model, glm::vec3(1, 1, 1) * 0.2f);
 	
 	glm::mat4 mat_projection = glm::perspective(float(M_PI * 0.25), (float)resize::get_aspect(), 0.1f, 100.f);
 
@@ -101,7 +101,6 @@ void window::loop()
 	glUniformMatrix4fv(shader::gl_model, 1, false, &mat_model[0][0]);
 	glUniform1i(shader::gl_do_tex, 0);
 	
-	Model.bind();
 	Model.render();
 
 	glfwSwapBuffers(win);