#include "Renderer.h"

Renderer::Renderer(Window& parent) : OGLRenderer(parent) {
	cube = Mesh::LoadFromMeshFile("OffsetCubeY.msh");
	camera = new Camera();

	shader = new Shader("SceneVertex.glsl", "SceneFragment.glsl");

	if (!shader->LoadSuccess()) {
		return;
	}

	projMatrix = Matrix4::Perspective(1.0f, 10000.0f,
		(float)width / (float)height, 45.0f);

	camera->SetPosition(Vector3(0, 30, 175));

	root = new SceneNode();
	root->AddChild(new CubeRobot(cube));

	glEnable(GL_DEPTH_TEST);
	init = true;
}

Renderer::~Renderer(void) {
	delete root;
	delete shader;
	delete camera;
	delete cube;
}

void Renderer::UpdateScene(float dt) {
	camera->UpdateCamera(dt);
	viewMatrix = camera->BuildViewMatrix();
	root->Update(dt);
}

void Renderer::RenderScene() {
	glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);

	BindShader(shader);
	UpdateShaderMatrices();

	glUniform1i(glGetUniformLocation(shader->GetProgram(), 
		"diffuseTex"), 1);

	DrawNode(root);
}

void Renderer::DrawNode(SceneNode* n) {
	if (n->GetMesh()) {
		Matrix4 model = n->GetWorldTransform() *
			Matrix4::Scale(n->GetModelScale());
		
		glUniformMatrix4fv(
			glGetUniformLocation(shader->GetProgram(),
			"modelMatrix"), 1, false, model.values);
		
		glUniform4fv(
			glGetUniformLocation(shader->GetProgram(),
			"nodeColour"), 1, (float*)&n->GetColour());

		glUniform1i(
			glGetUniformLocation(shader->GetProgram(),
			"useTexture"), 0);

		n->Draw(*this);
	}

	for (vector<SceneNode*>::const_iterator
		i = n->GetChildIteratorStart();
		i != n->GetChildIteratorEnd(); ++i) {
		DrawNode(*i);
	}
}


//
//#include "Renderer.h"
//
// Renderer::Renderer(Window & parent) : OGLRenderer(parent) {
//	 cube = Mesh::LoadFromMeshFile("OffsetCubeY.msh");
//	 //cube = Mesh::LoadFromMeshFile("Cube.msh");
//	 camera = new Camera();
//	
//	 shader = new Shader("SceneVertex.glsl", "SceneFragment.glsl");
//	
//	 if (!shader -> LoadSuccess()) {
//	 return;
//	
//	}
//	
//	 projMatrix = Matrix4::Perspective(1.0f, 10000.0f,
//	 (float)width / (float)height, 45.0f);
//	
//	 camera -> SetPosition(Vector3(0, 30, 175));
//	
//	 root = new SceneNode();
//	 root -> AddChild(new CubeRobot(cube));
//	
//	 glEnable(GL_DEPTH_TEST);
//	 init = true;
//	
//}
//
// Renderer ::~Renderer(void) {
// delete root;
// delete shader;
// delete camera;
// delete cube;
//
//}
//
//
//void Renderer::UpdateScene(float dt) {
//	 camera -> UpdateCamera(dt);
//	 viewMatrix = camera -> BuildViewMatrix();
//	 root -> Update(dt);
//	
//}
//
// void Renderer::RenderScene() {
// glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
//
// BindShader(shader);
// UpdateShaderMatrices();
//
// glUniform1i(glGetUniformLocation(shader -> GetProgram(),
// "diffuseTex"), 1);
//
// DrawNode(root);
//
//}
//
//
// void Renderer::DrawNode(SceneNode * n) {
//	 if (n -> GetMesh()) {
//		 Matrix4 model = n -> GetWorldTransform() *
//			 Matrix4::Scale(n -> GetModelScale());
//		 glUniformMatrix4fv(
//			 glGetUniformLocation(shader -> GetProgram(),
//				 " modelMatrix "), 1, false, model.values);
//		
//			 glUniform4fv(glGetUniformLocation(shader -> GetProgram(),
//				 " nodeColour "), 1, (float*)&n -> GetColour());
//		
//			 glUniform1i(glGetUniformLocation(shader -> GetProgram(),
//				 "useTexture"), 0); // Next tutorial ;)
//				 n -> Draw(*this);
//				
//	}
//	
//		 for (vector < SceneNode* >::const_iterator
//			 i = n -> GetChildIteratorStart();
//			 i != n -> GetChildIteratorEnd(); ++i) {
//		 DrawNode(*i);
//		
//	}
//	
//}