source: GTP/trunk/App/Demos/Illum/Illumination Networks Demo [OpenGL]/src/ThirdPersonCamera.cpp @ 845

#include ".\thirdpersoncamera.h"

ThirdPersonCamera::ThirdPersonCamera(void)
{
        rot=0;
        yaw=0;
        dist=1;
        m_LookAt=Vector(0.5,0,0);
}

ThirdPersonCamera::~ThirdPersonCamera(void)
{
}
void ThirdPersonCamera::setViewforBbox()
{
        glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();

        gluLookAt(0,0,0,-m_EyePosition.x,
                                -m_EyePosition.y,
                                -m_EyePosition.z,
                                m_UpVector.x,
                                m_UpVector.y,
                                m_UpVector.z);
        
}

void ThirdPersonCamera::SetViewandProjection(void)
{
        glMatrixMode(GL_PROJECTION);
        glLoadIdentity();
        gluPerspective(m_FovY,m_AspectRatio,m_NearClipDistance,m_FarClipDistance);

        glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();

        gluLookAt(m_EyePosition.x,
                                m_EyePosition.y,
                                m_EyePosition.z,
                                m_LookAt.x,
                                m_LookAt.y,
                                m_LookAt.z,
                                m_UpVector.x,
                                m_UpVector.y,
                                m_UpVector.z);
        


}

void ThirdPersonCamera::Move(Axis axis, double distance)
{
        switch (axis)
        {
        case AXIS_X:
                rot+=distance*3.14/40.0;
                break;
        case AXIS_Y:
                yaw+=distance*3.14/40.0;
                break;
        case AXIS_Z:
                dist-=distance; 
                break;
        }
        Vector dir(cos(rot)*cos(yaw),sin(yaw),sin(rot)*cos(yaw));
        dir=dir*dist;
        m_EyePosition=m_LookAt+dir;
        m_Orientation.y=rot/3.14*180.0;
        m_Orientation.x=-yaw/3.14*180.0;
}