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## igeo
Class IFace

    java.lang.Object
      igeo.IFace

    public class IFace

extends java.lang.Object

Class of a face of polygon mesh.

Author:
  Satoru Sugihara

Field Summary
`IColor` | `clr`
`boolean` | `deleted` used in deleting process
`IEdge[]` | `edges`
`IVec` | `normal`
`IVertex[]` | `vertices`

Constructor Summary
`IFace(IEdge[] e)`
`IFace(IEdge e1, IEdge e2, IEdge e3)`
`IFace(IEdge e1, IEdge e2, IEdge e3, IEdge e4)`
`IFace(IFace f)` Copis a face but shareing same vertices and edges with the original
`IFace(IVertex[] v)`
`IFace(IVertex v1, IVertex v2, IVertex v3)`
`IFace(IVertex v1, IVertex v2, IVertex v3, IVertex v4)`

Method Summary
`double` | `area()`
`void` | `calcNormal()`
`IVec` | `center()`
`IColor` | `clr()`
`IFace` | `clr(java.awt.Color c)`
`IFace` | `clr(java.awt.Color c, double alpha)`
`IFace` | `clr(java.awt.Color c, float alpha)`
`IFace` | `clr(java.awt.Color c, int alpha)`
`IFace` | `clr(double dgray)`
`IFace` | `clr(double dgray, double dalpha)`
`IFace` | `clr(double dr, double dg, double db)`
`IFace` | `clr(double dr, double dg, double db, double da)`
`IFace` | `clr(float fgray)`
`IFace` | `clr(float fgray, float falpha)`
`IFace` | `clr(float fr, float fg, float fb)`
`IFace` | `clr(float fr, float fg, float fb, float fa)`
`IFace` | `clr(IColor c)`
`IFace` | `clr(IColor c, double alpha)` to set color, with alpha value overwritten
`IFace` | `clr(IColor c, float alpha)` to set color, with alpha value overwritten
`IFace` | `clr(IColor c, int alpha)` to set color, with alpha value overwritten
`IFace` | `clr(int gray)`
`IFace` | `clr(int gray, int alpha)`
`IFace` | `clr(int r, int g, int b)`
`IFace` | `clr(int r, int g, int b, int a)`
`boolean` | `contains(IEdge e)` checks if the edge is inside face's edges array
`boolean` | `contains(IVertex v)`
`void` | `del()`
`double` | `dist(IVecI pt)` calculate closest distance to face taking normal into consideration.
`IFace` | `dup()`
`IEdge` | `edge(int i)`
`int` | `edgeNum()`
`static boolean` | `eq(double v1, double v2)`
`boolean` | `eq(IFace face)`
`void` | `flipNormal()`
`IVertex[]` | `getAdjacentVertices(IVertex v1, IVertex v2)`
`IVec` | `getAverageNormal()` average normal
`IVec[]` | `getBoundary()`
`IVec` | `getCenter()` alias of center
`IColor` | `getColor()`
`IEdge` | `getEdge(int i)`
`IEdge` | `getEdge(IVertex v1, IVertex v2)`
`IEdge` | `getOtherEdge(IEdge e)`
`IEdge` | `getOtherEdge(IVertex v)`
`IEdge[]` | `getOtherEdges(IEdge e)`
`IEdge[]` | `getOtherEdges(IVertex v)`
`IEdge[]` | `getOtherEdges(IVertex v1, IVertex v2, IVertex... otherVtx)` returns edges which aren't a link between any two of given vertex variable vtx.
`IVertex` | `getOtherVertex(IEdge e)`
`IVertex` | `getOtherVertex(IVertex v1, IVertex v2)`
`IVertex[]` | `getOtherVertices(IVertex v)`
`IEdge` | `getSharedEdge(IFace f)`
`IVertex[]` | `getSharedVertices(IFace f)`
`IVertex` | `getVertex(int i)`
`IFace` | `hsb(double dh, double ds, double db)`
`IFace` | `hsb(double dh, double ds, double db, double da)`
`IFace` | `hsb(float h, float s, float b)`
`IFace` | `hsb(float h, float s, float b, float a)`
`int` | `indexOf(IEdge e)`
`void` | `init(IEdge[] e)`
`boolean` | `loopDir(IEdge edge)` direction of edge based on the sequence of vertices array inside a face
`IVec` | `nml()` returns normal.
`IVec` | `normal()` alias of nml()
`boolean` | `onFace(IEdge e)` checks if the edge is located on the edge of the face even if it's not inside face's edges array
`void` | `replaceEdge(IEdge oldEdge, IEdge newEdge)`
`void` | `replaceVertex(IVertex oldVertex, IVertex newVertex)`
`boolean` | `sameLoopDir(IEdge e1, IEdge e2)`
`void` | `setNormal(IVec n)`
`java.util.ArrayList<java.lang.Object>` | `triangulate(boolean triangulateDirection, IMeshType creator)`
`java.util.ArrayList<java.lang.Object>` | `triangulateAtCenter(IMeshType creator)`
`IVertex` | `vertex(int i)`
`int` | `vertexNum()`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### vertices

    public IVertex[] vertices

### edges

    public IEdge[] edges

### normal

    public IVec normal

### deleted

    public boolean deleted

  used in deleting process

### clr

    public IColor clr

Constructor Detail

### IFace

    public IFace(IEdge[] e)

### IFace

    public IFace(IEdge e1,
                 IEdge e2,
                 IEdge e3)

### IFace

    public IFace(IEdge e1,
                 IEdge e2,
                 IEdge e3,
                 IEdge e4)

### IFace

    public IFace(IVertex[] v)

### IFace

    public IFace(IVertex v1,
                 IVertex v2,
                 IVertex v3)

### IFace

    public IFace(IVertex v1,
                 IVertex v2,
                 IVertex v3,
                 IVertex v4)

### IFace

    public IFace(IFace f)

  Copis a face but shareing same vertices and edges with the original

Method Detail

### init

    public void init(IEdge[] e)

### dup

    public IFace dup()

### getVertex

    public IVertex getVertex(int i)

### vertex

    public IVertex vertex(int i)

### getEdge

    public IEdge getEdge(int i)

### edge

    public IEdge edge(int i)

### vertexNum

    public int vertexNum()

### edgeNum

    public int edgeNum()

### getEdge

    public IEdge getEdge(IVertex v1,
                         IVertex v2)

### getOtherEdges

    public IEdge[] getOtherEdges(IVertex v1,
                                 IVertex v2,
                                 IVertex... otherVtx)

  returns edges which aren't a link between any two of given vertex variable vtx. matching only one is fine to be returned.

### getOtherEdges

    public IEdge[] getOtherEdges(IVertex v)

### getOtherEdge

    public IEdge getOtherEdge(IVertex v)

### getOtherEdges

    public IEdge[] getOtherEdges(IEdge e)

### getOtherEdge

    public IEdge getOtherEdge(IEdge e)

### getOtherVertex

    public IVertex getOtherVertex(IVertex v1,
                                  IVertex v2)

### getOtherVertex

    public IVertex getOtherVertex(IEdge e)

### getOtherVertices

    public IVertex[] getOtherVertices(IVertex v)

### getSharedVertices

    public IVertex[] getSharedVertices(IFace f)

### getSharedEdge

    public IEdge getSharedEdge(IFace f)

### getAdjacentVertices

    public IVertex[] getAdjacentVertices(IVertex v1,
                                         IVertex v2)

### loopDir

    public boolean loopDir(IEdge edge)

  direction of edge based on the sequence of vertices array inside a face

  Returns:
    true if it's same with vertices array sequence, otherwise false and also if edge is not included inside face, false.

### sameLoopDir

    public boolean sameLoopDir(IEdge e1,
                               IEdge e2)

### center

    public IVec center()

### getCenter

    public IVec getCenter()

  alias of center

### del

    public void del()

### contains

    public boolean contains(IVertex v)

### contains

    public boolean contains(IEdge e)

  checks if the edge is inside face's edges array

### onFace

    public boolean onFace(IEdge e)

  checks if the edge is located on the edge of the face even if it's not inside face's edges array

### indexOf

    public int indexOf(IEdge e)

### replaceVertex

    public void replaceVertex(IVertex oldVertex,
                              IVertex newVertex)

### replaceEdge

    public void replaceEdge(IEdge oldEdge,
                            IEdge newEdge)

### area

    public double area()

### nml

    public IVec nml()

  returns normal. if null, calculate average normal

### normal

    public IVec normal()

  alias of nml()

### getAverageNormal

    public IVec getAverageNormal()

  average normal

### calcNormal

    public void calcNormal()

### setNormal

    public void setNormal(IVec n)

### flipNormal

    public void flipNormal()

### triangulate

    public java.util.ArrayList<java.lang.Object> triangulate(boolean triangulateDirection,
                                                             IMeshType creator)

### triangulateAtCenter

    public java.util.ArrayList<java.lang.Object> triangulateAtCenter(IMeshType creator)

### eq

    public static boolean eq(double v1,
                             double v2)

### eq

    public boolean eq(IFace face)

### getBoundary

    public IVec[] getBoundary()

### dist

    public double dist(IVecI pt)

  calculate closest distance to face taking normal into consideration. if input point is different side of normal vector, it returns negative value

### clr

    public IColor clr()

### clr

    public IFace clr(IColor c)

### clr

    public IFace clr(IColor c,
                     int alpha)

  to set color, with alpha value overwritten

### clr

    public IFace clr(IColor c,
                     float alpha)

  to set color, with alpha value overwritten

### clr

    public IFace clr(IColor c,
                     double alpha)

  to set color, with alpha value overwritten

### clr

    public IFace clr(java.awt.Color c)

### clr

    public IFace clr(java.awt.Color c,
                     int alpha)

### clr

    public IFace clr(java.awt.Color c,
                     float alpha)

### clr

    public IFace clr(java.awt.Color c,
                     double alpha)

### getColor

    public IColor getColor()

  Returns:
    returns whatever Color of any graphics member. (first found)

### clr

    public IFace clr(int gray)

### clr

    public IFace clr(double dgray)

### clr

    public IFace clr(float fgray)

### clr

    public IFace clr(int gray,
                     int alpha)

### clr

    public IFace clr(double dgray,
                     double dalpha)

### clr

    public IFace clr(float fgray,
                     float falpha)

### clr

    public IFace clr(int r,
                     int g,
                     int b)

### clr

    public IFace clr(double dr,
                     double dg,
                     double db)

### clr

    public IFace clr(float fr,
                     float fg,
                     float fb)

### clr

    public IFace clr(int r,
                     int g,
                     int b,
                     int a)

### clr

    public IFace clr(double dr,
                     double dg,
                     double db,
                     double da)

### clr

    public IFace clr(float fr,
                     float fg,
                     float fb,
                     float fa)

### hsb

    public IFace hsb(double dh,
                     double ds,
                     double db,
                     double da)

### hsb

    public IFace hsb(float h,
                     float s,
                     float b,
                     float a)

### hsb

    public IFace hsb(double dh,
                     double ds,
                     double db)

### hsb

    public IFace hsb(float h,
                     float s,
                     float b)

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