#include <occtl_curves.h>
Public Attributes | |
| uint32_t | struct_version |
| const void * | p_next |
| const occtl_point3_t * | poles |
| size_t | pole_count |
| const double * | weights |
| const double * | knots |
| const int32_t * | multiplicities |
| size_t | knot_count |
| int32_t | degree |
| int32_t | is_periodic |
Detailed Description
Versioned create-info struct for B-spline curve construction.
Knots are in compact form (distinct values + multiplicities), which is OCCT's canonical representation. Arrays are borrowed for the duration of the occtl_curve_create_bspline call; they are not retained afterwards.
For a non-rational B-spline set weights to NULL. For a rational B-spline (NURBS) provide weights with pole_count entries; all values must be > 0.
Member Data Documentation
◆ degree
| int32_t occtl_curve_bspline_create_info::degree |
Polynomial degree; must be >= 1.
◆ is_periodic
| int32_t occtl_curve_bspline_create_info::is_periodic |
0 = non-periodic; 1 = periodic.
◆ knot_count
| size_t occtl_curve_bspline_create_info::knot_count |
Number of distinct knot values.
◆ knots
| const double* occtl_curve_bspline_create_info::knots |
[in] Borrows it; distinct knot values; count = knot_count.
◆ multiplicities
| const int32_t* occtl_curve_bspline_create_info::multiplicities |
[in] Borrows it; count = knot_count.
◆ p_next
| const void* occtl_curve_bspline_create_info::p_next |
Reserved for extensions; must be NULL.
◆ pole_count
| size_t occtl_curve_bspline_create_info::pole_count |
Number of poles.
◆ poles
| const occtl_point3_t* occtl_curve_bspline_create_info::poles |
[in] Borrows it; count = pole_count.
◆ struct_version
| uint32_t occtl_curve_bspline_create_info::struct_version |
Must be OCCTL_CURVE_BSPLINE_CREATE_INFO_VERSION_1.
◆ weights
| const double* occtl_curve_bspline_create_info::weights |
[in] Borrows it; count = pole_count when non-NULL. NULL -> non-rational; non-NULL -> rational (NURBS).
The documentation for this struct was generated from the following file:
- include/occtl/occtl_curves.h
