#include ".\skybox.h"

SkyBox::SkyBox(void)
{
}

SkyBox::~SkyBox(void)
{
}

void SkyBox::Display(Camera& cam)
{	
	glMatrixMode(GL_PROJECTION);
	glPushMatrix();
	glLoadIdentity();

	cam.SetProjection();
	
	glMatrixMode(GL_MODELVIEW);
	glPushMatrix();
	glLoadIdentity();
	cam.setViewforBbox();
/*	
	glRotatef(-cam.m_Orientation.y,0,1,0);
	glRotatef(360-cam.m_Orientation.x,1,0,0);	*/
	
	glDepthMask(GL_FALSE);
	glDisable(GL_DEPTH_TEST);

	float d=-0.002;
	glEnable(GL_TEXTURE_2D);
	glBindTexture(GL_TEXTURE_2D,m_Textures[0].getTextureHandler());
	glBegin(GL_QUADS);
	
		glTexCoord2f(-d,1+d);
		glVertex3f(-1,-1,-1);
		glTexCoord2f(-d,-d);
		glVertex3f(-1,1,-1);
		glTexCoord2f(1+d,-d);
		glVertex3f(1,1,-1);
		glTexCoord2f(1+d,1+d);
		glVertex3f(1,-1,-1);
	glEnd();

	glBindTexture(GL_TEXTURE_2D,m_Textures[1].getTextureHandler());
	glBegin(GL_QUADS);
		
		glTexCoord2f(-d,1+d);
		glVertex3f(+1,-1,+1);
		glTexCoord2f(-d,-d);
		glVertex3f(1,1,1);
		glTexCoord2f(1+d,-d);
		glVertex3f(-1,1,1);
		glTexCoord2f(1+d,1+d);
		glVertex3f(-1,-1,1);
	glEnd();

	glBindTexture(GL_TEXTURE_2D,m_Textures[4].getTextureHandler());
	glBegin(GL_QUADS);
			
		glTexCoord2f(-d,1+d);
		glVertex3f(-1,-1,1);
		glTexCoord2f(-d,-d);
		glVertex3f(-1,1,1);
		glTexCoord2f(1+d,-d);
		glVertex3f(-1,1,-1);
		glTexCoord2f(1+d,1+d);
		glVertex3f(-1,-1,-1);
	glEnd();

	glBindTexture(GL_TEXTURE_2D,m_Textures[5].getTextureHandler());
	glBegin(GL_QUADS);
	
		glTexCoord2f(-d,1+d);
		glVertex3f(1,-1,-1);
		glTexCoord2f(-d,-d);
		glVertex3f(1,1,-1);
		glTexCoord2f(1+d,-d);
		glVertex3f(1,1,1);
		glTexCoord2f(1+d,1+d);
		glVertex3f(1,-1,1);
	glEnd();

	glBindTexture(GL_TEXTURE_2D,m_Textures[2].getTextureHandler());
	glBegin(GL_QUADS);
		
		glTexCoord2f(-d,1+d);
		glVertex3f(-1,-1,-1);
		glTexCoord2f(1+d,1+d);
		glVertex3f(-1,-1,1);
		glTexCoord2f(1+d,-d);
		glVertex3f(1,-1,1);
		glTexCoord2f(-d,-d);
		glVertex3f(1,-1,-1);
	glEnd();

	glBindTexture(GL_TEXTURE_2D,m_Textures[3].getTextureHandler());
	glBegin(GL_QUADS);
		
		glTexCoord2f(1+d,-d);
		glVertex3f(-1,1,1);
		glTexCoord2f(-d,-d);
		glVertex3f(-1,1,-1);
		glTexCoord2f(-d,1+d);
		glVertex3f(1,1,-1);
		glTexCoord2f(1+d,1+d);
		glVertex3f(1,1,1);
	glEnd();
	

	glMatrixMode(GL_MODELVIEW);
	glPopMatrix();
	glMatrixMode(GL_PROJECTION);
	glPopMatrix();
	
    glDisable(GL_TEXTURE_2D);
	glDepthMask(GL_TRUE);
	glEnable(GL_DEPTH_TEST);
}

int SkyBox::Initialize(char* filename,char* ext)
{	
	char *fname=new char[20];
	fname[0]=NULL;
	strcat(fname,filename);	
	m_Textures[0].setFilename(strcat(strcat(fname,"back."),ext));
	//m_Textures[0].setFilename("test.png");
	fname=new char[20];
	fname[0]=NULL;
	strcat(fname,filename);
	m_Textures[1].setFilename(strcat(strcat(fname,"front."),ext));
	fname=new char[20];
	fname[0]=NULL;
	strcat(fname,filename);
	m_Textures[2].setFilename(strcat(strcat(fname,"bottom."),ext));
	fname=new char[20];
	fname[0]=NULL;
	strcat(fname,filename);
	m_Textures[3].setFilename(strcat(strcat(fname,"top."),ext));
	fname=new char[20];
	fname[0]=NULL;
	strcat(fname,filename);
	m_Textures[4].setFilename(strcat(strcat(fname,"left."),ext));
	fname=new char[20];
	fname[0]=NULL;
	strcat(fname,filename);
	m_Textures[5].setFilename(strcat(strcat(fname,"right."),ext));

	for(int i=0;i<6;i++)
	{
		m_Textures[i].LoadImage();
	}

	return true;
}