vtkUnstructuredGridPartialPreIntegration Class Reference
#include <vtkUnstructuredGridPartialPreIntegration.h>
Inheritance diagram for vtkUnstructuredGridPartialPreIntegration:
Detailed Description
performs piecewise linear ray integration.vtkUnstructuredGridPartialPreIntegration performs piecewise linear ray integration. This will give the same results as vtkUnstructuredGridLinearRayIntegration (with potentially a error due to table lookup quantization), but should be notably faster. The algorithm used is given by Moreland and Angel, "A Fast High Accuracy Volume Renderer for Unstructured Data."
This class is thread safe only after the first instance is created.
- Created by:
- Moreland, Kenneth
- CVS contributions (if > 5%):
- Moreland, Kenneth (97%)
- CVS logs (CVSweb):
Definition at line 62 of file vtkUnstructuredGridPartialPreIntegration.h.
Public Types | |
| typedef vtkUnstructuredGridVolumeRayIntegrator | Superclass |
Public Member Functions | |
| virtual const char * | GetClassName () |
| virtual int | IsA (const char *type) |
| virtual void | PrintSelf (ostream &os, vtkIndent indent) |
| virtual void | Initialize (vtkVolumeProperty *property, vtkDataArray *scalars) |
| virtual void | Integrate (vtkDoubleArray *intersectionLengths, vtkDataArray *nearIntersections, vtkDataArray *farIntersections, float color[4]) |
Static Public Member Functions | |
| int | IsTypeOf (const char *type) |
| vtkUnstructuredGridPartialPreIntegration * | SafeDownCast (vtkObject *o) |
| vtkUnstructuredGridPartialPreIntegration * | New () |
| float | Psi (float taufD, float taubD) |
| void | BuildPsiTable () |
| void | IntegrateRay (double length, double intensity_front, double attenuation_front, double intensity_back, double attenuation_back, float color[4]) |
| void | IntegrateRay (double length, const double color_front[3], double attenuation_front, const double color_back[3], double attenuation_back, float color[4]) |
Protected Types | |
| enum | { PSI_TABLE_SIZE = 512 } |
Protected Member Functions | |
| vtkUnstructuredGridPartialPreIntegration () | |
| ~vtkUnstructuredGridPartialPreIntegration () | |
Protected Attributes | |
| vtkVolumeProperty * | Property |
| vtkPartialPreIntegrationTransferFunction * | TransferFunctions |
| vtkTimeStamp | TransferFunctionsModified |
| int | NumIndependentComponents |
Static Protected Attributes | |
| float | PsiTable [PSI_TABLE_SIZE *PSI_TABLE_SIZE] |
Member Typedef Documentation
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Reimplemented from vtkUnstructuredGridVolumeRayIntegrator. Definition at line 66 of file vtkUnstructuredGridPartialPreIntegration.h. |
Member Enumeration Documentation
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Definition at line 111 of file vtkUnstructuredGridPartialPreIntegration.h. |
Constructor & Destructor Documentation
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Member Function Documentation
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Reimplemented from vtkUnstructuredGridVolumeRayIntegrator. |
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Return 1 if this class type 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. Reimplemented from vtkUnstructuredGridVolumeRayIntegrator. |
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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. Reimplemented from vtkUnstructuredGridVolumeRayIntegrator. |
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Reimplemented from vtkUnstructuredGridVolumeRayIntegrator. |
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Create an object with Debug turned off, modified time initialized to zero, and reference counting on. Reimplemented from vtkObject. |
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Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes. Reimplemented from vtkUnstructuredGridVolumeRayIntegrator. |
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Set up the integrator with the given properties and scalars. Implements vtkUnstructuredGridVolumeRayIntegrator. |
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Given a set of intersections (defined by the three arrays), compute the peicewise integration of the array in front to back order. /c intersectionLengths holds the lengths of each peicewise segment. /c nearIntersections and /c farIntersections hold the scalar values at the front and back of each segment. /c color should contain the RGBA value of the volume in front of the segments passed in, and the result will be placed back into /c color. Implements vtkUnstructuredGridVolumeRayIntegrator. |
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Integrates a single ray segment. Definition at line 130 of file vtkUnstructuredGridPartialPreIntegration.h. References Psi(). |
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Integrates a single ray segment. Definition at line 153 of file vtkUnstructuredGridPartialPreIntegration.h. References Psi(). |
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Looks up Psi (as defined by Moreland and Angel, "A Fast High Accuracy Volume Renderer for Unstructured Data") in a table. The table must be created first, which happens on the first instantiation of this class or when BuildPsiTable is first called. Definition at line 120 of file vtkUnstructuredGridPartialPreIntegration.h. References vtkMath::Floor(), PSI_TABLE_SIZE, and PsiTable. Referenced by IntegrateRay(). |
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Member Data Documentation
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Definition at line 104 of file vtkUnstructuredGridPartialPreIntegration.h. |
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Definition at line 106 of file vtkUnstructuredGridPartialPreIntegration.h. |
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Definition at line 107 of file vtkUnstructuredGridPartialPreIntegration.h. |
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Definition at line 108 of file vtkUnstructuredGridPartialPreIntegration.h. |
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Definition at line 113 of file vtkUnstructuredGridPartialPreIntegration.h. Referenced by Psi(). |
The documentation for this class was generated from the following file:
- dox/Rendering/vtkUnstructuredGridPartialPreIntegration.h