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&;'_''!(((|))9*X**+++h,,--!/=/r0011Q4_4m55vtkUnstructuredGridPreIntegrationvtkRenderingVolumePython.vtkUnstructuredGridPreIntegrationvtkUnstructuredGridPreIntegration - performs ray integration with pre-integration tables. Superclass: vtkUnstructuredGridVolumeRayIntegrator vtkUnstructuredGridPreIntegration performs ray integration by looking into a precomputed table. The result should be equivalent to that computed by vtkUnstructuredGridLinearRayIntegrator and vtkUnstructuredGridPartialPreIntegration, but faster than either one. The pre-integration algorithm was first introduced by Roettger, Kraus, and Ertl in "Hardware-Accelerated Volume And Isosurface Rendering Based On Cell-Projection." Due to table size limitations, a table can only be indexed by independent scalars. Thus, dependent scalars are not supported. IsTypeOfV.IsTypeOf(string) -> int C++: static vtkTypeBool IsTypeOf(const char *type) 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 vtkTypeMacro found in vtkSetGet.h. IsAV.IsA(string) -> int C++: vtkTypeBool IsA(const char *type) override; 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 vtkTypeMacro found in vtkSetGet.h. SafeDownCastV.SafeDownCast(vtkObjectBase) -> vtkUnstructuredGridPreIntegration C++: static vtkUnstructuredGridPreIntegration *SafeDownCast( vtkObjectBase *o) NewInstanceV.NewInstance() -> vtkUnstructuredGridPreIntegration C++: vtkUnstructuredGridPreIntegration *NewInstance() InitializeV.Initialize(vtkVolume, vtkDataArray) C++: void Initialize(vtkVolume *volume, vtkDataArray *scalars) override; Set up the integrator with the given properties and scalars. IntegrateV.Integrate(vtkDoubleArray, vtkDataArray, vtkDataArray, [float, float, float, float]) C++: void Integrate(vtkDoubleArray *intersectionLengths, vtkDataArray *nearIntersections, vtkDataArray *farIntersections, float color[4]) override; 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. GetIntegratorV.GetIntegrator() -> vtkUnstructuredGridVolumeRayIntegrator C++: virtual vtkUnstructuredGridVolumeRayIntegrator *GetIntegrator( ) The class used to fill the pre integration table. By default, a vtkUnstructuredGridPartialPreIntegration is built. SetIntegratorV.SetIntegrator(vtkUnstructuredGridVolumeRayIntegrator) C++: virtual void SetIntegrator( vtkUnstructuredGridVolumeRayIntegrator *) The class used to fill the pre integration table. By default, a vtkUnstructuredGridPartialPreIntegration is built. SetIntegrationTableScalarResolutionV.SetIntegrationTableScalarResolution(int) C++: virtual void SetIntegrationTableScalarResolution(int _arg) Set/Get the size of the integration table built. GetIntegrationTableScalarResolutionV.GetIntegrationTableScalarResolution() -> int C++: virtual int GetIntegrationTableScalarResolution() Set/Get the size of the integration table built. SetIntegrationTableLengthResolutionV.SetIntegrationTableLengthResolution(int) C++: virtual void SetIntegrationTableLengthResolution(int _arg) Set/Get the size of the integration table built. GetIntegrationTableLengthResolutionV.GetIntegrationTableLengthResolution() -> int C++: virtual int GetIntegrationTableLengthResolution() Set/Get the size of the integration table built. GetIntegrationTableScalarShiftV.GetIntegrationTableScalarShift(int) -> float C++: virtual double GetIntegrationTableScalarShift( int component=0) Get how an integration table is indexed. GetIntegrationTableScalarScaleV.GetIntegrationTableScalarScale(int) -> float C++: virtual double GetIntegrationTableScalarScale( int component=0) Get how an integration table is indexed. GetIntegrationTableLengthScaleV.GetIntegrationTableLengthScale() -> float C++: virtual double GetIntegrationTableLengthScale() Get how an integration table is indexed. GetIncrementalPreIntegrationV.GetIncrementalPreIntegration() -> int C++: virtual int GetIncrementalPreIntegration() Get/set whether to use incremental pre-integration (by default it's on). Incremental pre-integration is much faster but can introduce error due to numerical imprecision. Under most circumstances, the error is not noticeable. SetIncrementalPreIntegrationV.SetIncrementalPreIntegration(int) C++: virtual void SetIncrementalPreIntegration(int _arg) Get/set whether to use incremental pre-integration (by default it's on). Incremental pre-integration is much faster but can introduce error due to numerical imprecision. Under most circumstances, the error is not noticeable. IncrementalPreIntegrationOnV.IncrementalPreIntegrationOn() C++: virtual void IncrementalPreIntegrationOn() Get/set whether to use incremental pre-integration (by default it's on). Incremental pre-integration is much faster but can introduce error due to numerical imprecision. Under most circumstances, the error is not noticeable. IncrementalPreIntegrationOffV.IncrementalPreIntegrationOff() C++: virtual void IncrementalPreIntegrationOff() Get/set whether to use incremental pre-integration (by default it's on). Incremental pre-integration is much faster but can introduce error due to numerical imprecision. Under most circumstances, the error is not noticeable. GetPreIntegrationTableV.GetPreIntegrationTable(int) -> (float, ...) C++: virtual float *GetPreIntegrationTable(int component=0) Get the partial pre-integration table for the given scalar component. The tables are built when Initialize is called. A segment of length d with a front scalar of sf and a back scalar of sb is referenced in the resulting table as 4 * ((l * IntegrationTableLengthScale) * \c IntegrationTableScalarResolution * IntegrationTableScalarResolution + (sb * IntegrationTableScalarScale + \c IntegrationTableScalarShift) * IntegrationTableScalarResolution + (sf * IntegrationTableScalarScale + \c IntegrationTableScalarShift)). GetTableEntryV.GetTableEntry(float, float, float, int) -> (float, ...) C++: float *GetTableEntry(double scalar_front, double scalar_back, double lenth, int component=0) Get an entry (RGBA) in one of the pre-integration tables. The tables are built when Initialize is called. GetIndexedTableEntryV.GetIndexedTableEntry(int, int, int, int) -> (float, ...) C++: float *GetIndexedTableEntry(int scalar_front_index, int scalar_back_index, int length_index, int component=0) Like GetTableEntry, except the inputs are scaled indices into the table rather than than the actual scalar and length values. 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