Exemplo n.º 1
0
// This gets an AABB for the renderable, but it doesn't cause a parent's bones to be setup.
// This is used for placement in the leaves, but the more expensive version is used for culling.
void CalcRenderableWorldSpaceAABB_Fast( IClientRenderable *pRenderable, Vector &absMin, Vector &absMax )
{
	C_BaseEntity *pEnt = pRenderable->GetIClientUnknown()->GetBaseEntity();
	if ( pEnt && pEnt->IsFollowingEntity() )
	{
		C_BaseEntity *pParent = pEnt->GetMoveParent();
		Assert( pParent );

		// Get the parent's abs space world bounds.
		CalcRenderableWorldSpaceAABB_Fast( pParent, absMin, absMax );

		// Add the maximum of our local render bounds. This is making the assumption that we can be at any
		// point and at any angle within the parent's world space bounds.
		Vector vAddMins, vAddMaxs;
		pEnt->GetRenderBounds( vAddMins, vAddMaxs );
		// if our origin is actually farther away than that, expand again
		float radius = pEnt->GetLocalOrigin().Length();

		float flBloatSize = max( vAddMins.Length(), vAddMaxs.Length() );
		flBloatSize = max(flBloatSize, radius);
		absMin -= Vector( flBloatSize, flBloatSize, flBloatSize );
		absMax += Vector( flBloatSize, flBloatSize, flBloatSize );
	}
	else
	{
		// Start out with our own render bounds. Since we don't have a parent, this won't incur any nasty 
		CalcRenderableWorldSpaceAABB( pRenderable, absMin, absMax );
	}
}
Exemplo n.º 2
0
//-----------------------------------------------------------------------------
// Helper functions.
//-----------------------------------------------------------------------------
void DefaultRenderBoundsWorldspace( IClientRenderable *pRenderable, Vector &absMins, Vector &absMaxs )
{
	// Tracker 37433:  This fixes a bug where if the stunstick is being wielded by a combine soldier, the fact that the stick was
	//  attached to the soldier's hand would move it such that it would get frustum culled near the edge of the screen.
	C_BaseEntity *pEnt = pRenderable->GetIClientUnknown()->GetBaseEntity();
	if ( pEnt && pEnt->IsFollowingEntity() )
	{
		C_BaseEntity *pParent = pEnt->GetFollowedEntity();
		if ( pParent )
		{
			// Get the parent's abs space world bounds.
			CalcRenderableWorldSpaceAABB_Fast( pParent, absMins, absMaxs );

			// Add the maximum of our local render bounds. This is making the assumption that we can be at any
			// point and at any angle within the parent's world space bounds.
			Vector vAddMins, vAddMaxs;
			pEnt->GetRenderBounds( vAddMins, vAddMaxs );
			// if our origin is actually farther away than that, expand again
			float radius = pEnt->GetLocalOrigin().Length();

			float flBloatSize = max( vAddMins.Length(), vAddMaxs.Length() );
			flBloatSize = max(flBloatSize, radius);
			absMins -= Vector( flBloatSize, flBloatSize, flBloatSize );
			absMaxs += Vector( flBloatSize, flBloatSize, flBloatSize );
			return;
		}
	}

	Vector mins, maxs;
	pRenderable->GetRenderBounds( mins, maxs );

	// FIXME: Should I just use a sphere here?
	// Another option is to pass the OBB down the tree; makes for a better fit
	// Generate a world-aligned AABB
	const QAngle& angles = pRenderable->GetRenderAngles();
	const Vector& origin = pRenderable->GetRenderOrigin();
	if (angles == vec3_angle)
	{
		VectorAdd( mins, origin, absMins );
		VectorAdd( maxs, origin, absMaxs );
	}
	else
	{
		matrix3x4_t	boxToWorld;
		AngleMatrix( angles, origin, boxToWorld );
		TransformAABB( boxToWorld, mins, maxs, absMins, absMaxs );
	}
	Assert( absMins.IsValid() && absMaxs.IsValid() );
}