Frustum Camera::GetSplitFrustum(float nearClip, float farClip) const
{
if (projectionDirty_)
UpdateProjection();
nearClip = Max(nearClip, projNearClip_);
farClip = Min(farClip, projFarClip_);
if (farClip < nearClip)
farClip = nearClip;
Frustum ret;
if (customProjection_)
{
// DefineSplit() needs to project the near & far distances, so can not use a combined view-projection matrix.
// Transform to world space afterward instead
ret.DefineSplit(projection_, nearClip, farClip);
ret.Transform(GetEffectiveWorldTransform());
}
else
{
if (!orthographic_)
ret.Define(fov_, aspectRatio_, zoom_, nearClip, farClip, GetEffectiveWorldTransform());
else
ret.DefineOrtho(orthoSize_, aspectRatio_, zoom_, nearClip, farClip, GetEffectiveWorldTransform());
}
return ret;
}
Frustum Camera::GetViewSpaceSplitFrustum(float nearClip, float farClip) const
{
if (projectionDirty_)
UpdateProjection();
nearClip = Max(nearClip, projNearClip_);
farClip = Min(farClip, projFarClip_);
if (farClip < nearClip)
farClip = nearClip;
Frustum ret;
if (customProjection_)
ret.DefineSplit(projection_, nearClip, farClip);
else
{
if (!orthographic_)
ret.Define(fov_, aspectRatio_, zoom_, nearClip, farClip);
else
ret.DefineOrtho(orthoSize_, aspectRatio_, zoom_, nearClip, farClip);
}
return ret;
}
