graphicsclass.cpp

////////////////////////////////////////////////////////////////////////////////
// Filename: graphicsclass.cpp
////////////////////////////////////////////////////////////////////////////////
#include "graphicsclass.h"


GraphicsClass::GraphicsClass()
{
	m_D3D = 0;
	m_Camera = 0;
	m_Model = 0;
	m_TextureShader = 0;
	m_RenderTarget = 0;
}


GraphicsClass::GraphicsClass(const GraphicsClass& other)
{
}


GraphicsClass::~GraphicsClass()
{
}


bool GraphicsClass::Initialize(int screenWidth, int screenHeight, HWND hwnd)
{
	bool result;

		
	// Create the Direct3D object.
	m_D3D = new D3DClass;
	if(!m_D3D)
	{
		return false;
	}

	// Initialize the Direct3D object.
	result = m_D3D->Initialize(screenWidth, screenHeight, VSYNC_ENABLED, hwnd, FULL_SCREEN, SCREEN_DEPTH, SCREEN_NEAR);
	if(!result)
	{
		MessageBox(hwnd, L"Could not initialize Direct3D", L"Error", MB_OK);
		return false;
	}


	// Create the camera object.
	m_Camera = new CameraClass;
	if(!m_Camera)
	{
		return false;
	}

	// Create the model object.
	m_Model = new ModelClass;
	if(!m_Model)
	{
		return false;
	}

	// Initialize the model object.
	result = m_Model->Initialize(m_D3D->GetDevice());
	if(!result)
	{
		MessageBox(hwnd, L"Could not initialize the model object.", L"Error", MB_OK);
		return false;
	}

	// Create the color shader object.
	m_TextureShader = new ShaderClass;
	if(!m_TextureShader)
	{
		return false;
	}

	// Initialize the color shader object.
	result = m_TextureShader->Initialize(m_D3D->GetDevice(), hwnd);
	if(!result)
	{
		MessageBox(hwnd, L"Could not initialize the color shader object.", L"Error", MB_OK);
		return false;
	}

	m_RenderTarget = new RenderTarget();
	result = m_RenderTarget->Init(m_D3D->GetDevice(),800,600,DXGI_FORMAT_R8G8B8A8_UNORM,false);
	if(!result)
	{
		MessageBox(hwnd, L"Could not initialize the render target object.", L"Error", MB_OK);
		return false;
	}

	track_key mykey;

	return true;
}


void GraphicsClass::Shutdown()
{
	// Release the color shader object.
	if(m_TextureShader)
	{
		m_TextureShader->Shutdown();
		delete m_TextureShader;
		m_TextureShader = 0;
	}

	// Release the model object.
	if(m_Model)
	{
		m_Model->Shutdown();
		delete m_Model;
		m_Model = 0;
	}

	// Release the camera object.
	if(m_Camera)
	{
		delete m_Camera;
		m_Camera = 0;
	}

	// Release the D3D object.
	if(m_D3D)
	{
		m_D3D->Shutdown();
		delete m_D3D;
		m_D3D = 0;
	}

	return;
}


void GraphicsClass::Frame()
{
	// Set the position of the camera.
	m_Camera->SetPosition(0.0f, 0.0f, -5.0f);

	return;
}


bool GraphicsClass::Render()
{
	D3DXMATRIX worldMatrix, viewMatrix, projectionMatrix;
	bool result;

	m_RenderTarget->SetTarget(m_D3D->GetDeviceContext());

	m_RenderTarget->Clear(m_D3D->GetDeviceContext(),1.0f,1.0f,0.0f,1.0f);
	m_Camera->SetPosition(0.0f, 0.0f, -8.0f);
	m_Camera->Render();
	m_Camera->GetViewMatrix(viewMatrix);
	m_D3D->GetWorldMatrix(worldMatrix);
	m_D3D->GetProjectionMatrix(projectionMatrix);
	m_Model->Render(m_D3D->GetDeviceContext());
	
	m_TextureShader->Render(m_D3D->GetDeviceContext(), m_Model->GetIndexCount(), worldMatrix, viewMatrix, projectionMatrix, m_Model->GetTexture());
	m_TextureShader->DrawBuffers(m_D3D->GetDeviceContext(), m_Model->GetIndexCount());



	// restore render target
	m_D3D->RestoreTarget();

	// Clear the buffers to begin the scene.
	m_D3D->Clear(1.0f, 0.0f, 0.0f, 1.0f);

	// Generate the view matrix based on the camera's position.
		m_Camera->SetPosition(0.0f, 0.0f, -5.0f);
		m_Camera->Render();

	// Get the view, projection, and world matrices from the camera and D3D objects.
	m_Camera->GetViewMatrix(viewMatrix);
	m_D3D->GetWorldMatrix(worldMatrix);
	m_D3D->GetProjectionMatrix(projectionMatrix);

	// Put the model vertex and index buffers on the graphics pipeline to prepare them for drawing.
	m_Model->Render(m_D3D->GetDeviceContext());
	
	// Render the model with the color shader.
	result = m_TextureShader->Render(m_D3D->GetDeviceContext(), m_Model->GetIndexCount(), worldMatrix, viewMatrix, projectionMatrix,m_RenderTarget->GetResource());
	if(!result)
	{
		return false;
	}

	m_TextureShader->DrawBuffers(m_D3D->GetDeviceContext(), m_Model->GetIndexCount());

	// Present the rendered scene to the screen.
	m_D3D->Present();

	return true;
}