//STEP 3: SENSE (COMPONENT) -> EXTRACT FROM COMPONENT:
// 1) STATION
// 2) START_VECTOR
// 3) END_VECTOR
// 4) RADIUS
// 5) GLOBAL TRANSFORMATION MATRIX
// -> USE MATRIX ON START_VECTOR AND END_VECTOR TO MAKE GLOBAL_START_VECTOR & GLOBAL_END_VECTOR
// MAKE NEW NULL PART
// MAKE A POINT OBJECT AS ZERO-LENGTH-VECTOR (WHAT'S A ZERO-LENGTH-VECTOR?)
// MAKE NEW NULL GRAPHICS COMPONENT -> (ASSUMPTION: TRY TO ALLOCATE A GRAPHICS COMPONENT VIA component.GraphicComponents.TryGetGraphicComponent())
// CHECK FOR LINE INTERSECTION:
// IF INTERSECTION -> ALLOCATE PART AND POINT TO COMPONENT -> RETURN 1
// ELSE -> ALLOCATE NULL AND ZERO_POINT TO COMPONENT -> RETURN 0
protected int Sense(SmartComponent component)
{
Station stn = component.ContainingProject as Station;
if (stn == null)
{
return(0); //??
}
Vector3 start = (Vector3)component.Properties["Start"].Value;
Vector3 end = (Vector3)component.Properties["End"].Value;
double radius = (double)component.Properties["Radius"].Value;
// Convert to global (i.e. translate start and end point from component frame coorinates to global coordinates)
Matrix4 mat = component.Transform.GlobalMatrix;
start = mat.MultiplyPoint(start);
end = mat.MultiplyPoint(end);
Part part = null;
Vector3 point = Vector3.ZeroVector;
GraphicComponent gc = null;
component.GraphicComponents.TryGetGraphicComponent("_sensorPart_", out gc);//<- WHAT'S ALL THIS THEN?!
int result;
if (CollisionDetector.CheckLineIntersection(stn, start, end, radius, out part, out point))
{
component.Properties["SensedPart"].Value = part;
component.Properties["SensedPoint"].Value = point;
result = 1;
}
else
{
component.Properties["SensedPart"].Value = null;
component.Properties["SensedPoint"].Value = Vector3.ZeroVector;
result = 0;
}
return(result);
}