vtk
Class vtkUnstructuredGridBunykRayCastFunction

java.lang.Object
  extended byvtk.vtkObjectBase
      extended byvtk.vtkObject
          extended byvtk.vtkUnstructuredGridVolumeRayCastFunction
              extended byvtk.vtkUnstructuredGridBunykRayCastFunction
All Implemented Interfaces:
java.io.Serializable

public class vtkUnstructuredGridBunykRayCastFunction
extends vtkUnstructuredGridVolumeRayCastFunction
implements java.io.Serializable

vtkUnstructuredGridBunykRayCastFunction - a superclass for ray casting functions. vtkUnstructuredGridBunykRayCastFunction is a concrete implementation of a ray cast function for unstructured grid data. This class was based on the paper "Simple, Fast, Robust Ray Casting of Irregular Grids" by Paul Bunyk, Arie Kaufmna, and Claudio Silva. This method is quite memory intensive (with extra explicit copies of the data) and therefore should not be used for very large data. This method assumes that the input data is composed entirely of tetras - use vtkDataSetTriangleFilter before setting the input on the mapper. The basic idea of this method is as follows: 1) Enumerate the triangles. At each triangle have space for some information that will be used during rendering. This includes which tetra the triangles belong to, the plane equation and the Barycentric coefficients. 2) Keep a reference to all four triangles for each tetra. 3) At the beginning of each render, do the precomputation. This includes creating an array of transformed points (in view coordinates) and computing the view dependent info per triangle (plane equations and barycentric coords in view space) 4) Find all front facing boundary triangles (a triangle is on the boundary if it belongs to only one tetra). For each triangle, find all pixels in the image that intersect the triangle, and add this to the sorted (by depth) intersection list at each pixel. 5) For each ray cast, traverse the intersection list. At each intersection, accumulate opacity and color contribution per tetra along the ray until you reach an exiting triangle (on the boundary). JavaBean wrapper for vtkUnstructuredGridBunykRayCastFunction object.

Author:
vtk2jbean Automatic JavaBean wrapper for VTK.
See Also:
Serialized Form

Field Summary
protected  java.beans.PropertyChangeSupport changes
           
 
Fields inherited from class vtk.vtkObjectBase
vtkId
 
Constructor Summary
  vtkUnstructuredGridBunykRayCastFunction()
           
protected vtkUnstructuredGridBunykRayCastFunction(int dmy)
           
 
Method Summary
 java.lang.String getClassName()
          Return the class name as a string.
 vtkUnstructuredGridBunykRayCastFunction getThisUnstructuredGridBunykRayCastFunction()
           
 int isA(java.lang.String id0)
          Return 1 if this class is the same type of (or a subclass of) the named class.
protected  void VTKCastInit()
           
 void VTKInit()
           
 
Methods inherited from class vtk.vtkUnstructuredGridVolumeRayCastFunction
getThisUnstructuredGridVolumeRayCastFunction
 
Methods inherited from class vtk.vtkObject
AddObserver, breakOnError, debugOff, debugOn, getDebug, getGlobalWarningDisplay, getMTime, getThisObject, globalWarningDisplayOff, globalWarningDisplayOn, hasObserver, hasObserver, invokeEvent, invokeEvent, modified, Print, PrintRevisions, register, removeObserver, removeObservers, removeObservers, setDebug, setGlobalWarningDisplay, unRegister
 
Methods inherited from class vtk.vtkObjectBase
addPropertyChangeListener, finalize, getReferenceCount, getThisObjectBase, isTypeOf, removePropertyChangeListener, setReferenceCount, VTKDelete
 
Methods inherited from class java.lang.Object
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

changes

protected java.beans.PropertyChangeSupport changes
Constructor Detail

vtkUnstructuredGridBunykRayCastFunction

public vtkUnstructuredGridBunykRayCastFunction()

vtkUnstructuredGridBunykRayCastFunction

protected vtkUnstructuredGridBunykRayCastFunction(int dmy)
Method Detail

getThisUnstructuredGridBunykRayCastFunction

public vtkUnstructuredGridBunykRayCastFunction getThisUnstructuredGridBunykRayCastFunction()

getClassName

public java.lang.String getClassName()
Description copied from class: vtkObjectBase
Return the class name as a string. This method is defined in all subclasses of vtkObjectBase with the vtkTypeRevisionMacro found in vtkSetGet.h.

Overrides:
getClassName in class vtkUnstructuredGridVolumeRayCastFunction

isA

public int isA(java.lang.String id0)
Description copied from class: vtkObjectBase
Return 1 if this class is the same type of (or a subclass of) the named class. Returns 0 otherwise. This method works in combination with vtkTypeRevisionMacro found in vtkSetGet.h.

Overrides:
isA in class vtkUnstructuredGridVolumeRayCastFunction

VTKInit

public void VTKInit()
Overrides:
VTKInit in class vtkObject

VTKCastInit

protected void VTKCastInit()
Overrides:
VTKCastInit in class vtkUnstructuredGridVolumeRayCastFunction


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