HM_ExtAPI::CurveSegmentGetData()
Returns parameters that define straight segment curve.
Syntax
bool CurveSegmentGetData(
const HM_EntityGeometryCurve & curve,
HM_Point& start_point,
HM_Point& end_point
);
Type
HyperMesh Ext API
Description
The function expects that the type of curve object is HM_ExtAPI::SEGMENT(). Application should call the function HM_ExtAPI::GeomCurveGetType() to verify the type before calling CurveSegmentGetData function.
The points on the segment can be calculated parametrically as linear interpolation between start and end points
C(t) = S (1 - t) + E t
using parameters returned by the CurveSegmentGetData function as summarized in the table below.
| Parameters used by CurveSegmentGetData | Segment parameters |
|---|---|
| start_point | S |
| end_point | E |
If the function succeeds, the return value is true. If the function fails, the return value is false. To get extended value information, call HM_ExtAPI::GetLastErrorCode().
Requires including hm_extapi.h.
Inputs
- curve
- [in] - Handle to curve object that was returned by previous calls to API functions.
- start_point
- [out] - The point corresponding to curve parameter value 0.
- end_point
- [out] - The point corresponding to curve parameter value 1.
Errors
None.