#include <vtkUnstructuredGridPartialPreIntegration.h>
Inheritance diagram for vtkUnstructuredGridPartialPreIntegration:
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.
Definition at line 53 of file vtkUnstructuredGridPartialPreIntegration.h.
| virtual void | Integrate (vtkDoubleArray *intersectionLengths, vtkDataArray *nearIntersections, vtkDataArray *farIntersections, float color[4]) |
| static void | IntegrateRay (double length, double intensity_front, double attenuation_front, double intensity_back, double attenuation_back, float color[4]) |
| static void | IntegrateRay (double length, const double color_front[3], double attenuation_front, const double color_back[3], double attenuation_back, float color[4]) |
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 (vtkVolume *volume, vtkDataArray *scalars) |
Static Public Member Functions | |
| static int | IsTypeOf (const char *type) |
| static vtkUnstructuredGridPartialPreIntegration * | SafeDownCast (vtkObject *o) |
| static vtkUnstructuredGridPartialPreIntegration * | New () |
| static float | Psi (float taufD, float taubD) |
| static void | BuildPsiTable () |
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 | |
| static float | PsiTable [PSI_TABLE_SIZE *PSI_TABLE_SIZE] |
| static int | PsiTableBuilt |
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Reimplemented from vtkUnstructuredGridVolumeRayIntegrator. Definition at line 57 of file vtkUnstructuredGridPartialPreIntegration.h. |
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Definition at line 102 of file vtkUnstructuredGridPartialPreIntegration.h. |
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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 122 of file vtkUnstructuredGridPartialPreIntegration.h. References Psi(). |
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Definition at line 145 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 112 of file vtkUnstructuredGridPartialPreIntegration.h. References vtkMath::Floor(), PSI_TABLE_SIZE, and PsiTable. Referenced by IntegrateRay(). |
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Definition at line 95 of file vtkUnstructuredGridPartialPreIntegration.h. |
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Definition at line 97 of file vtkUnstructuredGridPartialPreIntegration.h. |
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Definition at line 98 of file vtkUnstructuredGridPartialPreIntegration.h. |
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Definition at line 99 of file vtkUnstructuredGridPartialPreIntegration.h. |
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Definition at line 104 of file vtkUnstructuredGridPartialPreIntegration.h. Referenced by Psi(). |
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Definition at line 105 of file vtkUnstructuredGridPartialPreIntegration.h. |
1.4.3-20050530