OdDbRay::getFirstDeriv Method
|
Parameters |
Description |
|
double param |
[in] Parameter value specifying the point on the ray as a Double value. |
|
OdGeVector3d& firstDeriv |
[out] Reference to a variable in which this method must save the first derivative as three-dimensional vector instance. |
Computes the first derivative for the specified parameter of the ray entity and returns the three-dimensional vector instance. The first derivative is constant for any point of the ray.
Example of Working with the Ray Object
Computed Ray Properties
|
Copyright © 2002–2020. Open Design Alliance. All rights reserved.
|
