// Camera update function
void CameraObject::Update(float dT)
{
bool bUpdateViewProj = false;
if(bTransformDirty)
{
Matrix4x4::ConstructLookAtMatrix(&cachedViewMatrix, GetLocation(), GetOrientationQuat());
bTransformDirty = false;
bUpdateViewProj = true;
}
if(bProjectionDirty)
{
switch(projectionType)
{
case CameraObject::CLT_Perspective: Matrix4x4::ConstructPerspectiveMatrix(&cachedProjectionMatrix, pParams.FOV, pParams.Aspect, pParams.Near, pParams.Far); break;
case CameraObject::CLT_Orthographic: Matrix4x4::ConstructOrthographicMatrix(&cachedProjectionMatrix, oParams.Width, oParams.Height, oParams.Near, oParams.Far); break;
default: assert(false && "Unknown projection type");
}
bProjectionDirty = false;
bUpdateViewProj = true;
}
if(bUpdateViewProj)
{
cachedViewProjectionMatrix = cachedViewMatrix * cachedProjectionMatrix;
}
}
Quat Util_L::GetOrientationQuat(const Vec3f &_nodePos, const Vec3f &_viewPos, const Vec3f &_baseUp, S32 _order[3], Float *_pDist)
{
Vec3f vFrontDir = _viewPos - _nodePos;
if (_pDist)
{
(*_pDist) = vFrontDir.GetNorm();
}
vFrontDir.CNormalize();
return GetOrientationQuat(vFrontDir, _baseUp, _order);
}
