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Class jtr.mesh.Stencil

java.lang.Object
   |
   +----jtr.mesh.Stencil

public class Stencil

extends Object

Stencil(Mesh, int, int)

Constructor; creates array of references to Point3's to store point information, and initializes the corners from VRML information.

CatClark()

Perform Catmull-Clark subdivision on the face at a given level, based on the stencil at the earlier level.

Get(int, int, float[])

accessor

Get(int, int, int)

universal accessor.

GetFaceRing(int, int)

facering...

GetHorEdgeRing(int, int)

horizontal edgering...

GetVertEdgeRing(int, int)

vertical edgering...

GetVertexRing(int, int)

vertex ring

order:

• element 0 is the vertex
• remaining elements alternate, in order:
• vertex connected by one edge, vertex connected to previous
• vertex by one edge (two edges from center vertex)

Set(int, int, float[])

mutator

 public Stencil(Mesh m_,
                int facenum_,
                int lev_)

Constructor; creates array of references to Point3's to store point information, and initializes the corners from VRML information.

Parameters:

m_ - the mesh in which the stencil is contained

facenum_ - the number of the stencil's face

lev_ - level of subdivision (0 == none)

 public void Set(int x,
                 int y,
                 float p[])

mutator

 public void Get(int x,
                 int y,
                 float p[])

accessor

 public Point3 Get(int corner,
                   int x,
                   int y)

universal accessor. Takes a corner and x,y coordinates in the rotated frame in which it is in the upper-left corner, and returns the right element.

 public Point3[] GetFaceRing(int x,
                             int y)

facering... ring of corner points on face with upperleft corner x, y

 public Point3[] GetHorEdgeRing(int x,
                                int y)

horizontal edgering... ring about edge from x,y to x+1,y order of edgering (important for assigning weights): elements 0, 1 are the edge itself elements 2, 3 and 4, 5 make up the edges above and below

 public Point3[] GetVertEdgeRing(int x,
                                 int y)

vertical edgering... ring about edge from x,y to x,y+1 elements 0, 1 are the edge itself elements 2, 3 and 4, 5 make up the edges above and below

 public Stencil. CountedPoints GetVertexRing(int x,
                                             int y)

vertex ring

order:

• element 0 is the vertex
• remaining elements alternate, in order:
• vertex connected by one edge, vertex connected to previous
• vertex by one edge (two edges from center vertex)

 public void CatClark()

Perform Catmull-Clark subdivision on the face at a given level, based on the stencil at the earlier level. Level 0 is filled in automatically... if you don't divide in strict order (1, then 2, ...) it will use unitialized values from the previous level and you will end up with massively unexciting output meshes.

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