org.j3d.aviatrix3d
Class IndexedTriangleFanArray

java.lang.Object
  org.j3d.aviatrix3d.SceneGraphObject
      org.j3d.aviatrix3d.NodeComponent
          org.j3d.aviatrix3d.Geometry
              org.j3d.aviatrix3d.VertexGeometry
                  org.j3d.aviatrix3d.IndexedVertexGeometry
                      org.j3d.aviatrix3d.IndexedTriangleFanArray

All Implemented Interfaces:

java.lang.Comparable, LeafPickTarget, PickableObject, PickTarget, DeletableRenderable, GeometryRenderable, Renderable

public class IndexedTriangleFanArray
extends IndexedVertexGeometry

An OpenGL IndexedTriangleFanArray.

Setting geometry

Part of the optimisation we make is to only copy into the underlying structures the exact number of coordinates, normals etc that are needed. To know this number, we need to know how many coordinates exist before attempting to set anything else. When constructing, or updating, geometry, you should always make sure that you first set the vertex list, then the sizing information for the strip or fan counts, and then set normals as needed.

Internationalisation Resource Names

• minStripSizeMsg: Error message when the strip list has at least one strip with less than 3 vertices listed.

Version:

$Revision: 1.33 $

Author:

Justin Couch

Field Summary

Fields inherited from class org.j3d.aviatrix3d.IndexedVertexGeometry

indexBuffer, indices, numIndices, numIndicesUsed, vboElementIdMap

Fields inherited from class org.j3d.aviatrix3d.VertexGeometry

ATTRIB_CLEAR, ATTRIB_MASK, attribIds, ATTRIBS, attributes, COLOR_3, COLOR_4, COLOR_CLEAR, COLOR_MASK, COLOR_SINGLE, COLOR2, COLOR2_CLEAR, COLOR2_MASK, color2Buffer, color2s, colorBuffer, colors, COORDINATE_2, COORDINATE_3, COORDINATE_4, COORDINATE_CLEAR, COORDINATE_MASK, coordinates, dataChanged, EDGE_CLEAR, EDGE_MASK, EDGES, FOG, FOG_CLEAR, FOG_MASK, fogBuffer, fogCoords, hasMultiTextureAPI, INTERSECT_ALL, INTERSECT_COLOR, INTERSECT_COORDS, INTERSECT_NORMAL, INTERSECT_TEXCOORDS_MULTI, INTERSECT_TEXCOORDS_SINGLE, maxTextureUnits, NORMAL_CLEAR, normalBuffer, normals, NORMALS, numCoords, numRenderedTextureSets, numRequiredCoords, numTextureArrays, numTextureSets, TEXTURE_CLEAR, TEXTURE_COORDINATE_1, TEXTURE_COORDINATE_2, TEXTURE_COORDINATE_3, TEXTURE_COORDINATE_4, TEXTURE_COORDINATE_MULTI, TEXTURE_COORDINATE_SINGLE, TEXTURE_MASK, TEXTURE_SET_AVAILABLE, TEXTURE_SET_CLEAR, textureBuffer, textures, textureSets, textureTypes, useVbo, VBO_HINT_DYNAMIC, VBO_HINT_STATIC, VBO_HINT_STREAM, vboAvailable, vboHint, vboIdMap, vboQueryComplete, vertexBuffer, vertexFormat, wkPolygon

Fields inherited from class org.j3d.aviatrix3d.Geometry

bounds, implicitBounds, internalUpdater, INVALID_BOUNDS, lastParentList, parentList, pickFlags, validAlpha

Fields inherited from class org.j3d.aviatrix3d.NodeComponent

lastParent, liveCount

Fields inherited from class org.j3d.aviatrix3d.SceneGraphObject

alive, LISTENER_SET_TIMING_ERR_PROP, updateHandler

Fields inherited from interface org.j3d.aviatrix3d.picking.PickableObject

COLLIDABLE_OBJECT, GENERAL_OBJECT, PROXIMITY_OBJECT, VISIBLE_OBJECT

Fields inherited from interface org.j3d.aviatrix3d.picking.PickTarget

CUSTOM_PICK_TYPE, GROUP_PICK_TYPE, LEAF_PICK_TYPE, SINGLE_PICK_TYPE

Constructor Summary

IndexedTriangleFanArray()
Constructs a IndexedTriangleFanArray with default values.

IndexedTriangleFanArray(boolean useVbo, int vboHint)
Constructs an instance.

Method Summary

int	compareTo(IndexedTriangleFanArray ta) Compares this object with the specified object for order.
int	compareTo(java.lang.Object o) Compares this object with the specified object for order.
boolean	equals(IndexedTriangleFanArray ta) Compares this object with the specified object to check for equivalence.
boolean	equals(java.lang.Object o) Compare this object for equality to the given object.
void	getFanCount(int[] values) Get the sizes of the valid fans.
int	getValidFanCount() Get the number of valid fans that are defined for this geometry.
protected boolean	isVisible() Check to see if this geometry is making the geometry visible or not.
boolean	pickLineRay(float[] origin, float[] direction, boolean findAny, float[] dataOut, int dataOutFlags) Check for all intersections against this geometry using a line ray and return the exact distance away of the closest picking point.
boolean	pickLineSegment(float[] start, float[] end, boolean findAny, float[] dataOut, int dataOutFlags) Check for all intersections against this geometry using a line segment and return the exact distance away of the closest picking point.
protected void	recomputeBounds() Internal method to recalculate the implicit bounds of this Node.
void	render(javax.media.opengl.GL gl) Issue ogl commands needed for this renderable object.
void	setFanCount(int[] counts, int num) Set the number of valid fans to use.

Methods inherited from class org.j3d.aviatrix3d.IndexedVertexGeometry

cleanup, createBuffer, fillBufferData, getIndices, getValidIndexCount, setIndices, setVBOEnabled, setVertexStateVBO

Methods inherited from class org.j3d.aviatrix3d.VertexGeometry

clearVertexState, computeBufferSize, getColor, getColors, getFogCoordinates, getFogCoordinates, getNormal, getNormals, getSecondaryColors, getSecondaryColors, getTextureCoordinate, getTextureCoordinates, getValidVertexCount, getVBOEnabled, getVBOHint, getVertex, getVertexType, getVertices, initPolygonDetails, is2D, isMultiTextureAllowed, numTextureUnits, ray3DQuadChecked, ray3DTriangleChecked, setAttributes, setAttributes, setAttributes, setAttributes, setAttributes, setColors, setFogCoordinates, setLive, setNormals, setSecondaryColors, setSingleColor, setTextureCoordinates, setTextureCoordinates, setTextureCoordinates, setTextureSetMap, setTextureSetMap, setValidVertexCount, setVBOHint, setVertexState, setVertices, setVertices, updateBounds

Methods inherited from class org.j3d.aviatrix3d.Geometry

addParent, boundsChanged, checkPickMask, getBounds, getPickableBounds, getPickMask, getPickTargetType, hasTransparency, markBoundsDirty, pickBatch, pickSingle, removeParent, setBounds, setPickMask

Methods inherited from class org.j3d.aviatrix3d.NodeComponent

addParent, getParents, numParents, removeParent

Methods inherited from class org.j3d.aviatrix3d.SceneGraphObject

checkForCyclicChild, checkForCyclicParent, dataChanged, getAppUpdateWriteTimingMessage, getBoundsWriteTimingMessage, getDataWriteTimingMessage, getUserData, isLive, setUpdateHandler, setUserData

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.j3d.aviatrix3d.rendering.GeometryRenderable

hasTransparency

Constructor Detail

IndexedTriangleFanArray

public IndexedTriangleFanArray()

Constructs a IndexedTriangleFanArray with default values.

IndexedTriangleFanArray

public IndexedTriangleFanArray(boolean useVbo,
                               int vboHint)

Constructs an instance.

Parameters:

useVbo - Should we use vertex buffer objects

vboHint - Hints for how to setup VBO. Valid values are VBO_HINT_*

Method Detail

render

public void render(javax.media.opengl.GL gl)

Issue ogl commands needed for this renderable object.

Parameters:

gl - The gl context to draw with

isVisible

protected boolean isVisible()

Check to see if this geometry is making the geometry visible or not. Returns true if the defined number of coordinates, indices and fans are all non-zero.

Overrides:

isVisible in class IndexedVertexGeometry

Returns:

true when the geometry is visible

pickLineSegment

public boolean pickLineSegment(float[] start,
                               float[] end,
                               boolean findAny,
                               float[] dataOut,
                               int dataOutFlags)
                        throws NotPickableException

Check for all intersections against this geometry using a line segment and return the exact distance away of the closest picking point.

Specified by:

pickLineSegment in interface LeafPickTarget

Overrides:

pickLineSegment in class Geometry

Parameters:

start - The start point of the segment

end - The end point of the segment

findAny - True if it only has to find a single intersection and can exit as soon as it finds the first intersection. False if it must find the closest polygon

dataOut - An array to put the data in for the intersection. Exact format is described by the flags

dataOutFlags - A set of derived-class specific flags describing what data should be included in the output array

Returns:

True if an intersection was found according to the input request

Throws:

NotPickableException - This object has been marked as non pickable, but you decided to try to call the method anyway

pickLineRay

public boolean pickLineRay(float[] origin,
                           float[] direction,
                           boolean findAny,
                           float[] dataOut,
                           int dataOutFlags)
                    throws NotPickableException

Check for all intersections against this geometry using a line ray and return the exact distance away of the closest picking point. Default implementation always returns false indicating that nothing was found. Derived classes should override and provide a real implementation.

Specified by:

pickLineRay in interface LeafPickTarget

Overrides:

pickLineRay in class Geometry

Parameters:

origin - The start point of the ray

direction - The direction vector of the ray

findAny - True if it only has to find a single intersection and can exit as soon as it finds the first intersection. False if it must find the closest polygon

dataOut - An array to put the data in for the intersection. Exact format is described by the flags

dataOutFlags - A set of derived-class specific flags describing what data should be included in the output array

Returns:

True if an intersection was found according to the input request

Throws:

NotPickableException - This object has been marked as non pickable, but you decided to try to call the method anyway

recomputeBounds

protected void recomputeBounds()

Internal method to recalculate the implicit bounds of this Node.

Overrides:

recomputeBounds in class IndexedVertexGeometry

compareTo

public int compareTo(java.lang.Object o)
              throws java.lang.ClassCastException

Compares this object with the specified object for order. Returns a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.

Parameters:

o - The objec to be compared

Returns:

-1, 0 or 1 depending on order

Throws:

java.lang.ClassCastException - The specified object's type prevents it from being compared to this Object

equals

public boolean equals(java.lang.Object o)

Compare this object for equality to the given object.

Specified by:

equals in interface Renderable

Overrides:

equals in class java.lang.Object

Parameters:

o - The object to be compared

Returns:

True if these represent the same values

setFanCount

public void setFanCount(int[] counts,
                        int num)
                 throws InvalidWriteTimingException

Set the number of valid fans to use. A check is performed to make sure that the number of vertices high enough to support the total of all the fan counts so make sure to call setVertex() with the required array length before calling this method. Each fan must be a minumum length of three.

Parameters:

counts - The array of counts

num - The number of valid items to read from the array

Throws:

java.lang.IllegalArgumentException - Invalid total fan count or individual fan count < 3

InvalidWriteTimingException - An attempt was made to write outside of the NodeUpdateListener bounds changed callback method

getValidFanCount

public int getValidFanCount()

Get the number of valid fans that are defined for this geometry.

Returns:

a positive number

getFanCount

public void getFanCount(int[] values)

Get the sizes of the valid fans. The passed array must be big enough to contain all the fan counts.

Parameters:

values - An array to copy the strip values into

compareTo

public int compareTo(IndexedTriangleFanArray ta)

Compares this object with the specified object for order. Returns a negative integer, zero, or a positive integer as this object is less than, equal to, or greater than the specified object.

Parameters:

ta - The argument instance to be compared

Returns:

-1, 0 or 1 depending on order

equals

public boolean equals(IndexedTriangleFanArray ta)

Compares this object with the specified object to check for equivalence.

Parameters:

ta - The geometry instance to be compared

Returns:

true if the objects represent identical values