This structure declares an extended three-dimensional point. The extended point contains one additional field that is used as a weight for NURBS surfaces.
Declaration:
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typedef struct tag_IGVectPoint3DEx
{
VECT_REAL m_x;
VECT_REAL m_y;
VECT_REAL m_z;
VECT_REAL m_w;
} IGVectPoint3DEx;
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Members:
| Name | Type | Description |
| m_x | VECT_REAL | x coordinate. |
| m_y | VECT_REAL | y coordinate. |
| m_z | VECT_REAL | z coordinate. |
| m_w | VECT_REAL | Weight of the point. |