gov.nasa.worldwind.util

Class PolygonTessellator2

java.lang.Object

gov.nasa.worldwind.util.PolygonTessellator2

public class PolygonTessellator2
extends Object

TODO: Combine these capabilities into PolygonTessellator with support for pattern used by ShapefileExtrudedPolygons. TODO: Keep the combined class in package gov.nasa.worldwind.util.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	PolygonTessellator2.TessCallbackAdapter

Field Summary

Fields

Modifier and Type	Field and Description
protected IntBuffer	boundaryIndices
protected double[]	clip
protected double[]	coords
protected IntBuffer	interiorIndices
protected boolean	isBoundaryEdge
protected double[]	offset
protected Range	polygonVertexRange
protected int	prevClipCode
protected GLUtessellator	tess
protected float[]	vertex
protected int	vertexStride
protected FloatBuffer	vertices

Constructor Summary

Constructors

Constructor and Description
PolygonTessellator2()

Method Summary

Modifier and Type	Method and Description
void	addVertex(double x, double y, double z)
void	beginContour()
void	beginPolygon()
protected int	clipCode(double x, double y, double z) Computes a 4-bit code indicating the vertex's location in the 9 cell grid defined by the clip bounds and the eight adjacent spaces defined by extending the min/max boundaries to infinity.
void	endContour()
void	endPolygon()
int	getBoundaryIndexCount()
IntBuffer	getBoundaryIndices(IntBuffer buffer)
int	getInteriorIndexCount()
IntBuffer	getInteriorIndices(IntBuffer buffer)
Range	getPolygonVertexRange()
int	getVertexCount()
FloatBuffer	getVertices(FloatBuffer buffer)
protected void	putBoundaryIndex(int i)
protected void	putInteriorIndex(int i)
protected int	putVertex(double[] coords, int pos)
void	reset()
void	resetIndices()
void	setPolygonClipCoords(double xMin, double xMax, double yMin, double yMax)
void	setPolygonNormal(double x, double y, double z)
void	setVertexOffset(double x, double y, double z)
void	setVertexStride(int stride)
protected void	tessBegin(int type)
protected void	tessCombine(double[] coords, Object[] vertexData, float[] weight, Object[] outData)
protected void	tessEdgeFlag(boolean boundaryEdge)
protected void	tessEnd()
protected void	tessVertex(Object vertexData)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

boundaryIndices

protected IntBuffer boundaryIndices

clip

protected double[] clip

coords

protected double[] coords

interiorIndices

protected IntBuffer interiorIndices

isBoundaryEdge

protected boolean isBoundaryEdge

offset

protected double[] offset

polygonVertexRange

protected Range polygonVertexRange

prevClipCode

protected int prevClipCode

tess

protected GLUtessellator tess

vertex

protected float[] vertex

vertexStride

protected int vertexStride

vertices

protected FloatBuffer vertices

Constructor Detail

PolygonTessellator2

public PolygonTessellator2()

Method Detail

addVertex

public void addVertex(double x,
                      double y,
                      double z)

beginContour

public void beginContour()

beginPolygon

public void beginPolygon()

clipCode

protected int clipCode(double x,
                       double y,
                       double z)

Computes a 4-bit code indicating the vertex's location in the 9 cell grid defined by the clip bounds and the eight adjacent spaces defined by extending the min/max boundaries to infinity. 0 indicates that the vertex is inside the clip bounds.

endContour

public void endContour()

endPolygon

public void endPolygon()

getBoundaryIndexCount

public int getBoundaryIndexCount()

getBoundaryIndices

public IntBuffer getBoundaryIndices(IntBuffer buffer)

getInteriorIndexCount

public int getInteriorIndexCount()

getInteriorIndices

public IntBuffer getInteriorIndices(IntBuffer buffer)

getPolygonVertexRange

public Range getPolygonVertexRange()

getVertexCount

public int getVertexCount()

getVertices

public FloatBuffer getVertices(FloatBuffer buffer)

putBoundaryIndex

protected void putBoundaryIndex(int i)

putInteriorIndex

protected void putInteriorIndex(int i)

putVertex

protected int putVertex(double[] coords,
                        int pos)

reset

public void reset()

resetIndices

public void resetIndices()

setPolygonClipCoords

public void setPolygonClipCoords(double xMin,
                                 double xMax,
                                 double yMin,
                                 double yMax)

setPolygonNormal

public void setPolygonNormal(double x,
                             double y,
                             double z)

setVertexOffset

public void setVertexOffset(double x,
                            double y,
                            double z)

setVertexStride

public void setVertexStride(int stride)

tessBegin

protected void tessBegin(int type)

tessCombine

protected void tessCombine(double[] coords,
                           Object[] vertexData,
                           float[] weight,
                           Object[] outData)

tessEdgeFlag

protected void tessEdgeFlag(boolean boundaryEdge)

tessEnd

protected void tessEnd()

tessVertex

protected void tessVertex(Object vertexData)