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HNurbsSurface Class Reference

The HNurbsSurface class encapsulates a NURBS surface or Chaking subdivision surface. More...

#include <HOpCreateNurbs3D.h>

List of all members.

Public Member Functions

void CreateDefaultVertices (HPoint *center, HPoint *axis)
void DisableSelectability ()
void DisplayVertices ()
void EnableSelectability ()
HC_KEY GetKey ()
HC_KEY GetSurfaceMeshKey ()
void HideVertices ()
 HNurbsSurface ()
HC_KEY Init (HPoint *center, HPoint *axis, int num_u_vertices, int num_v_vertices, int degree, int tesselation_level, float distance, HSurfaceType stype)
void Init (HC_KEY key)
void Recalculate ()
void ShowVertex (int vertexnum, HPoint &v)
void UpdateVertex (int vertexnum, float x, float y, float z)


Detailed Description

The HNurbsSurface class encapsulates a NURBS surface or Chaking subdivision surface.

The surface can either be created by passing the necessary parameters like degree, control points, tessellation level or implicitly from an existing nurbs segment in the hoops segment tree. It is internally represented as a HOOPS mesh as described in HC_Insert_NURBS_Surface and a second invisible mesh representing the control points themselves.


Constructor & Destructor Documentation

HNurbsSurface::HNurbsSurface (  )  [inline]

Constructs a HNurbsSurface.


Member Function Documentation

void HNurbsSurface::CreateDefaultVertices ( HPoint center,
HPoint axis 
)

This method creates a set of default control points given a center point and an axis of rotation.

Parameters:
center The center point for creation.
axis An initial axis of rotation.

void HNurbsSurface::DisableSelectability (  ) 

This method disables the selectability of NURBS Surface.

void HNurbsSurface::DisplayVertices (  ) 

This method shows the mesh containing the control points for the surface.

void HNurbsSurface::EnableSelectability (  ) 

This method enables the selectability of the NURBS surface.

HC_KEY HNurbsSurface::GetKey (  ) 

Returns:
The NURBS surface key.

HC_KEY HNurbsSurface::GetSurfaceMeshKey (  )  [inline]

Returns:
The key to the tesselated mesh.

References HC_KEY.

void HNurbsSurface::HideVertices (  ) 

This method hides the control point mesh.

HC_KEY HNurbsSurface::Init ( HPoint center,
HPoint axis,
int  num_u_vertices,
int  num_v_vertices,
int  degree,
int  tesselation_level,
float  distance,
HSurfaceType  stype 
)

This method initialize the Nurbs object based on given parameters.

Parameters:
center The location of the center of creation.
axis The initial axis of rotation.
num_u_vertices The number of control points in the u direction.
num_v_vertices The number of control points in the v direction.
degree The degree of the surface.
tesselation_level The tesselation density.
distance The distance of vertices. This parameter is used during tesselation.
stype Pass which type of surface you want to create. It can either be either NURBS or Chakin.

void HNurbsSurface::Init ( HC_KEY  key  ) 

This method initializes the Nurbs object based on existing nurbs segment in HOOPS.

Parameters:
key The key to the nurbs segment in HOOPS.

void HNurbsSurface::Recalculate (  ) 

This method recalculates the surface based on the existing control points.

void HNurbsSurface::ShowVertex ( int  vertexnum,
HPoint v 
)

This method returns the location of a control point given a specific index identifier.

Parameters:
vertexnum The control point index number in the m_pVertices list.
v Reference to HPoint structure. This method returns the control poĆ­nt position.

void HNurbsSurface::UpdateVertex ( int  vertexnum,
float  x,
float  y,
float  z 
)

This method allows you to modify a specific control point.

Parameters:
vertexnum The control point index number in the m_pVertices list.
x The new x coordinate.
y The new y coordinate.
z The new z coordinate.


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