Added phong lighting

examples/movement/main.cpp

@@ -183,6 +183,7 @@ int main(int argc, char** argv)
 
 	// Make a square
 	oglu::VertexArray cubeDefault = oglu::MakeVertexArray(vertices, sizeof(vertices), nullptr, 0, topology, sizeof(topology));
+	oglu::SharedMaterial cubeMaterial(new oglu::Material);
 	oglu::Object cubes[10] = { 
 		oglu::Object(cubeDefault),
 		oglu::Object(cubeDefault),
@@ -218,6 +219,9 @@ int main(int argc, char** argv)
 	cubes[8].SetRotation(150.0f, 20.0f, -150.0f);
 	cubes[9].SetRotation(-130.0f, 10.0f, -150.0f);
 
+	for (oglu::Object& cube : cubes)
+		cube.material = cubeMaterial;
+
 	oglu::Object lightSource(cubeDefault);
 	lightSource.SetScale(glm::vec3(0.1f));
 
@@ -254,6 +258,7 @@ int main(int argc, char** argv)
 
 	oglu::Color bgColor = oglu::Color::Black;
 	lightSource.SetPosition(1.0f, 1.0f, -1.0f);
+
 	while (!glfwWindowShouldClose(window))
 	{
 		processInput(window);
@@ -271,6 +276,8 @@ int main(int argc, char** argv)
 		shader->SetUniform3fv("lightPos", 1, glm::value_ptr(lightSource.GetPosition()));
 		shader->SetUniform("lightColor", pointLight.color, true);
 
+		shader->SetUniform3fv("viewPos", 1, glm::value_ptr(camera.GetPosition()));
+
 		shader->SetUniformMatrix4fv("view", 1, GL_FALSE, glm::value_ptr(camera.GetMatrix()));
 		shader->SetUniformMatrix4fv("projection", 1, GL_FALSE, glm::value_ptr(camera.GetProjection()));
 
@@ -278,6 +285,11 @@ int main(int argc, char** argv)
 		{
 			shader->SetUniform("model", cube);
 			shader->SetUniformMatrix3fv("normal", 1, GL_FALSE, glm::value_ptr(cube.GetNormalMatrix()));
+
+			shader->SetUniform("material.ambient", cube.material->ambient, true);
+			shader->SetUniform("material.diffuse", cube.material->diffuse, true);
+			shader->SetUniform("material.specular", cube.material->specular, true);
+			shader->SetUniform("material.shininess", cube.material->shininess);
 			cube.Render();
 		}
 
@@ -320,6 +332,18 @@ int main(int argc, char** argv)
 				ImGui::TreePop();
 				ImGui::Separator();
 			}
+
+			ImGui::SetNextItemOpen(true);
+			if (ImGui::TreeNode("Cube Material"))
+			{
+				ImGui::ColorEdit3("Ambient", &(cubeMaterial->ambient.r));
+				ImGui::ColorEdit3("Diffuse", &(cubeMaterial->diffuse.r));
+				ImGui::ColorEdit3("Specular", &(cubeMaterial->specular.r));
+				ImGui::SliderFloat("Shininess", &(cubeMaterial->shininess), 1.0f, 256.0f);
+
+				ImGui::TreePop();
+				ImGui::Separator();
+			}
 		}
 
 		ImGui::End();

examples/movement/shaders/fragmentShader.frag

@@ -1,4 +1,10 @@
 #version 330 core
+struct Material 
+{
+	vec3 ambient, diffuse, specular;
+	float shininess;
+};
+
 in vec2 oUV;
 in vec3 oNormal;
 in vec3 oFragPos;
@@ -14,18 +20,30 @@ uniform vec3 ambientColor;
 uniform vec3 lightPos;
 uniform vec3 lightColor;
 
+uniform vec3 viewPos;
+
+uniform Material material;
+
 void main()
 {
-	vec3 ambient = ambientColor * ambientStrength;
+	// Ambient light
+	vec3 ambient = ambientColor * ambientStrength * material.ambient;
+
 	vec3 norm = normalize(oNormal);
+	// Diffuse light
 	vec3 lightDir = normalize(lightPos - oFragPos);
 
-	float diff = max(dot(norm, lightDir), 0.0) * 2.0;
+	float diff = max(dot(norm, lightDir), 0.0);
-	diff *= min(1.0 / pow(length(lightPos - oFragPos), 2), 2.0);
+	vec3 diffuse = (diff * material.diffuse) * lightColor;
-	
+
-	vec3 diffuse = diff * lightColor;
+	// Specular light
+	vec3 viewDir = normalize(viewPos - oFragPos);
+	vec3 reflectDir = reflect(-lightDir, norm);
+
+	float spec = pow(max(dot(viewDir, reflectDir), 0.0), material.shininess);
+	vec3 specular = (material.specular * spec) * lightColor;
 
 	vec4 objColor = mix(texture(texture1, oUV), texture(texture2, oUV), 0.2);
 
-	FragColor = vec4(ambient + diffuse, 1.0) * objColor;
+	FragColor = vec4(ambient + diffuse + specular, 1.0) * objColor;
 }

include/camera.hpp

@@ -74,6 +74,13 @@ namespace oglu
 		 */
 		void SetPosition(const glm::vec3& position);
 
+		/**
+		 * @brief Get the cameras position.
+		 * 
+		 * @returns a 3D vector pointing to the position of the camera
+		 */
+		const glm::vec3 GetPosition();
+
 		/**
 		 * @brief Offset the cameras position
 		 *

include/lighting/point.hpp

@@ -25,6 +25,7 @@ namespace oglu
 	public:
 		Color color;
 
+
 	private:
 		glm::vec3* position;
 		bool isLinked;

include/object.hpp

@@ -9,11 +9,26 @@
 #define OBJECT_HPP
 
 #include <core.hpp>
+#include <color.hpp>
 #include <transformable.hpp>
 #include <vertexArray.hpp>
 
 namespace oglu
 {
+	/**
+	 * @brief A structure representing an object's material.
+	 */
+	class OGLU_API Material
+	{
+	public:
+		Color ambient = Color::White;
+		Color diffuse = Color::White;
+		Color specular = Color::White;
+		float shininess = 32.0f;
+	};
+
+	typedef std::shared_ptr<Material> SharedMaterial;
+
 	/**
 	 * @brief An object in 3D space.
 	 * 
@@ -63,6 +78,10 @@ namespace oglu
 		 */
 		void Render();
 
+		void CopyMaterial(const Material& other);
+
+		SharedMaterial material;
+
 	private:
 		VertexArray VAO;	///< The VAO used for rendering
 	};

src/camera.cpp

@@ -52,6 +52,11 @@ namespace oglu
 		LookAt(this->position + front);
 	}
 
+	const glm::vec3 Camera::GetPosition()
+	{
+		return position;
+	}
+
 	void Camera::Move(float x, float y, float z)
 	{
 		this->position += glm::vec3(x, y, z);

src/object.cpp

@@ -2,19 +2,19 @@
 
 namespace oglu
 {
-	Object::Object(const GLfloat* vertices, size_t verticesSize, const GLuint* indices, size_t indicesSize, const VertexAttribute* topology, size_t topologySize) //:
+	Object::Object(const GLfloat* vertices, size_t verticesSize, const GLuint* indices, size_t indicesSize, const VertexAttribute* topology, size_t topologySize) :
-		// VAO(MakeVertexArray(vertices, verticesSize, indices, indicesSize, topology, topologySize))
+		VAO(MakeVertexArray(vertices, verticesSize, indices, indicesSize, topology, topologySize)),
+		material(new Material)
 	{
-		VAO = MakeVertexArray(vertices, verticesSize, indices, indicesSize, topology, topologySize);
 	}
 
 	Object::Object(const VertexArray& vao) :
-		VAO(vao)
+		VAO(vao), material(new Material)
 	{
 	}
 
 	Object::Object(const Object& other) :
-		VAO(other.VAO)
+		VAO(other.VAO), material(new Material)
 	{
 	}
 
@@ -26,4 +26,9 @@ namespace oglu
 	{
 		VAO->BindAndDraw();
 	}
+
+	void Object::CopyMaterial(const Material& other)
+	{
+		memcpy(material.get(), &other, sizeof(Material));
+	}
 }