This represents a single control vertex in a NurbsEvaluator. More...

#include "nurbsVertex.h"

Public Member Functions
	NurbsVertex (const NurbsVertex &copy)

PN_stdfloat	get_extended_vertex (int d) const
	Returns an n-dimensional vertex value. More...

NodePath	get_space (const NodePath &rel_to) const

const LVecBase4 &	get_vertex () const

void	operator= (const NurbsVertex &copy)

void	set_extended_vertex (int d, PN_stdfloat value)
	Sets an n-dimensional vertex value. More...

void	set_space (const NodePath &space)
	Sets the space of this vertex as a fixed NodePath. More...

void	set_space (const std::string &space)
	Sets the space of this vertex as a relative path from the rel_to node. More...

void	set_vertex (const LVecBase4 &vertex)

Detailed Description

This represents a single control vertex in a NurbsEvaluator.

It may be relative to a particular coordinate space; or its coordinate space may be unspecified.

This is not related to NurbsCurve, CubicCurveseg or any of the ParametricCurve-derived objects in this module. It is a completely parallel implementation of NURBS curves, and will probably eventually replace the whole ParametricCurve class hierarchy.

Definition at line 32 of file nurbsVertex.h.

Member Function Documentation

◆ get_extended_vertex()

PN_stdfloat NurbsVertex::get_extended_vertex ( int d ) const

Returns an n-dimensional vertex value.

See set_extended_vertex(). This returns the value set for the indicated dimension, or 0.0 if nothing has been set.

Definition at line 43 of file nurbsVertex.cxx.

◆ set_extended_vertex()

void NurbsVertex::set_extended_vertex	(	int	d,
		PN_stdfloat	value
	)

Sets an n-dimensional vertex value.

This allows definition of a NURBS surface or curve in a sparse n-dimensional space, typically used for associating additional properties (like color or joint membership) with each vertex of a surface.

The value d is an arbitrary integer value and specifies the dimension of question for this particular vertex. Any number of dimensions may be specified, and they need not be consecutive. If a value for a given dimension is not specified, is it implicitly 0.0.

The value is implicitly scaled by the homogenous weight value–that is, the fourth component of the value passed to set_vertex(). This means the ordinary vertex must be set first, before the extended vertices can be set.

Definition at line 33 of file nurbsVertex.cxx.

◆ set_space() [1/2]

void NurbsVertex::set_space ( const NodePath & space )

inline

Sets the space of this vertex as a fixed NodePath.

Definition at line 70 of file nurbsVertex.I.

◆ set_space() [2/2]

void NurbsVertex::set_space ( const std::string & space )

inline

Sets the space of this vertex as a relative path from the rel_to node.

Definition at line 79 of file nurbsVertex.I.

The documentation for this class was generated from the following files:

panda/src/parametrics/nurbsVertex.h
panda/src/parametrics/nurbsVertex.cxx
panda/src/parametrics/nurbsVertex.I