source: GTP/branches/IllumWPdeliver2008dec/IlluminationWP/demos/Standalone/Hierarchical Systems Demo [OpenGL]/RESOURCES/include/My3DGraphRes/Light.cpp @ 3255

// Light.cpp: implementation of the Light class.
//
//////////////////////////////////////////////////////////////////////

#include "Light.h"

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

Light::Light()
{

}

Light::~Light()
{

}

void Light::SetLight(GLenum light)
{
        //glLightfv(light,GL_AMBIENT,m_Ambient_Color.GetArrayf());
        glLightfv(light,GL_DIFFUSE,m_Diffuse_Color.GetArrayf());
        //glLightfv(light,GL_AMBIENT,m_Diffuse_Color.GetArrayf());
        glLightfv(light,GL_SPECULAR,m_Specular_Color.GetArrayf());

        if(this->m_type==LIGHT_TYPE_DIRECTIONAL)
        {
                m_Position.z=0;
                m_Position.x=-1*m_Spot_Direction.x;
                m_Position.y=-1*m_Spot_Direction.y;
                m_Position.z=-1*m_Spot_Direction.z;
        }
        glLightfv(light,GL_POSITION,m_Position.GetArrayf());

        if(m_type==LIGHT_TYPE_SPOT)
        {
        glLightfv(light,GL_SPOT_DIRECTION,m_Spot_Direction.GetArrayf());
        glLightf(light,GL_SPOT_EXPONENT,m_Exponent);
        glLightf(light,GL_SPOT_CUTOFF,m_Cutoff);
        }

        if(this->m_type==LIGHT_TYPE_POINT)
        {
                m_Cutoff=180;
                glLightf(light,GL_SPOT_CUTOFF,m_Cutoff);
        }       

        glEnable(light);
}

void Light::Load(ifstream *file)
{
        fprintf(stderr, "Loading Light...\n");
        
        char* tempchar=new char[500];
        file->getline(tempchar,500,' ');
        file->getline(tempchar,500,'\n');
        //pointlight
        if(tempchar[0]=='p')
        {
                m_type=0;
        }
        //directionallight
        if(tempchar[0]=='d')
        {
                m_type=1;
        }
        //spotlight
        if(tempchar[0]=='s')
        {
                m_type=2;
        }
        
        file->getline(tempchar,500,'\n');
        sscanf(tempchar,"color %f %f %f",&m_Diffuse_Color.x,&m_Diffuse_Color.y,&m_Diffuse_Color.z);
        m_Specular_Color=m_Diffuse_Color;

        switch(m_type)
        {
        case 0:
                file->getline(tempchar,500,'\n');
                sscanf(tempchar,"position %f %f %f",&m_Position.x,&m_Position.y,&m_Position.z);
                m_Position.w=1;
                file->getline(tempchar,500,'\n');
                break;
        case 1:
                file->getline(tempchar,500,'\n');
                sscanf(tempchar,"position %f %f %f",&m_Position.x,&m_Position.y,&m_Position.z);
                m_Position.w=0;
                sscanf(tempchar,"direction %f %f %f",&m_Position.x,&m_Position.y,&m_Position.z);
                break;
        case 2:
                file->getline(tempchar,500,'\n');
                sscanf(tempchar,"position %f %f %f",&m_Position.x,&m_Position.y,&m_Position.z);
                m_Position.w=1;
                sscanf(tempchar,"direction %f %f %f",&m_Spot_Direction.x,&m_Spot_Direction.y,&m_Spot_Direction.z);
                break;
        }       
}