bool RADAR::GetRadarCoord(ACTOR *actor, VECTOR3D pos3D, VECTOR2D *radarPos2D)
	{
	float radarR, radarCOS, radarSIN, rT;
	VECTOR3D deltaPos, v;

	//Compute coords of object relative to the actor

	deltaPos = pos3D-actor->worldPos;
	
	//Normalize that

	deltaPos.Normalize();
	
	//Distance of blip from center of radar is cosine of angle

	//between view direction and direction to object

	radarR = actor->directionVector.DotProduct(deltaPos);
	
	//Determine projection of object on plane perpendicular

	//to viewing plane

	v = deltaPos+actor->directionVector*(-radarR);
	
	//Handle special case of null v, meaning object is on

	//line of sight

	if(v.IsNull())
	{
		(*radarPos2D) = center;
		return true;
	}
	
	//Else normalize v

	v.Normalize();
	
	//v is now a vector from the actor''s viewpoint to projection

	//of object on the actors''s plane. Compute angle from actors''s

	//up vector to object

	radarSIN = actor->rightVector.DotProduct(v);
	radarCOS = actor->upVector.DotProduct(v);
	
	//Convert to cartesian

	rT = (1.0f-radarR)/2.0f;
	(*radarPos2D).x = center.x+radius*(-rT)*radarSIN;
	(*radarPos2D).y = center.y+radius*rT*radarCOS;
	
	return true;
	}