ReadOnly Property UMinValue As System.Double

Dim instance As ICurveParamData
Dim value As System.Double
 
value = instance.UMinValue

System.double UMinValue {get;}

property System.double UMinValue {
   System.double get();
}

Property Value

The minimum U parameter must always be smaller than the maximum U parameter.

If the curve and edge are in opposite directions (ICurveParamData::Sense returns false) and the minimum U parameter is larger than the maximum U parameter, then the parameters are in negative parameter space. For example, if ICurveParamData::Sense is false, minimum U parameter is 10, and maximum U parameter is 5, then ICurveParamData::UMinValue = -10 and ICurveParamData::UMaxValue = -5. To normalize the values in positive parameter space, swap the two U parameter values and then negate them, so that the values of the minimum U parameter is 5 and the maximum U parameter is 10.

If the curve is closed and the curve starts and ends at the same point, then ICurveParamData::UMinValue and ICurveParamData::UMaxValue are a period apart.