void CCamera::Init(const POINT3D &pos,const Vector4D& dir,float fov,float nearz,
float farz,float viewport_width,float viewport_height )
{
m_pos = pos;
m_dir = dir;
m_fov = fov;
m_nearclipz = nearz;
m_farclipz = farz;
m_viewport_width = viewport_width;
m_viewport_height = viewport_height;
m_aspectratio = m_viewport_width/m_viewport_height;
m_imageplannar_width = 2;
m_imageplannar_height = 2/m_aspectratio;
m_imageplannar_viewdist = 1/tan(DEG2RAD *(m_fov/2));
m_w2camMatrix.Identity();
m_c2prjMatrix.Identity();
m_p2ScrMatrix.Identity();
SetWorldToCameraMatrix();
SetCameraToProjectionMatrix();
SetProjectionToScreenMatrix();
}
ProjectionFrustum::ProjectionFrustum(float fov, float z_near, float z_far)
: camera_clip_matrix(1.0)
, world_camera_matrix(1.0)
, fov(fov)
, z_near(z_near)
, z_far(z_far)
{
SetupCameraClip();
SetCameraToClipMatrix(camera_clip_matrix);
SetWorldToCameraMatrix(world_camera_matrix);
}
