FreeMat: vtkFastSplatter

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vtkFastSplatter

Section: Visualization Toolkit Imaging Classes

# Usage

vtkFastSplatter takes any vtkPointSet as input (of which vtkPolyData and vtkUnstructuredGrid inherit). Each point in the data set is considered to be an impulse. These impulses are convolved with a given splat image. In other words, the splat image is added to the final image at every place where there is an input point.

Note that point and cell data are thrown away. If you want a sampling of unstructured points consider vtkGaussianSplatter or vtkShepardMethod.

Use input port 0 for the impulse data (vtkPointSet), and input port 1 for the splat image (vtkImageData)

.SECTION Bugs

Any point outside of the extents of the image is thrown away, even if it is close enough such that it's convolution with the splat image would overlap the extents.

To create an instance of class vtkFastSplatter, simply invoke its constructor as follows

      obj = vtkFastSplatter

# Methods

The class vtkFastSplatter has several methods that can be used. They are listed below. Note that the documentation is translated automatically from the VTK sources, and may not be completely intelligible. When in doubt, consult the VTK website. In the methods listed below, `obj` is an instance of the vtkFastSplatter class.

- `string = obj.GetClassName ()`
- `int = obj.IsA (string name)`
- `vtkFastSplatter = obj.NewInstance ()`
- `vtkFastSplatter = obj.SafeDownCast (vtkObject o)`
- `obj.SetModelBounds (double , double , double , double , double , double )` - Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed. If any of the (min,max) bounds values are min >= max, then the bounds will be computed automatically from the input data. Otherwise, the user-specified bounds will be used.
- `obj.SetModelBounds (double a[6])` - Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed. If any of the (min,max) bounds values are min >= max, then the bounds will be computed automatically from the input data. Otherwise, the user-specified bounds will be used.
- `double = obj. GetModelBounds ()` - Set / get the (xmin,xmax, ymin,ymax, zmin,zmax) bounding box in which the sampling is performed. If any of the (min,max) bounds values are min >= max, then the bounds will be computed automatically from the input data. Otherwise, the user-specified bounds will be used.
- `obj.SetOutputDimensions (int , int , int )` - Set/get the dimensions of the output image
- `obj.SetOutputDimensions (int a[3])` - Set/get the dimensions of the output image
- `int = obj. GetOutputDimensions ()` - Set/get the dimensions of the output image
- `obj.SetLimitMode (int )` - Set/get the way voxel values will be limited. If this is set to None (the default), the output can have arbitrarily large values. If set to clamp, the output will be clamped to [MinValue,MaxValue]. If set to scale, the output will be linearly scaled between MinValue and MaxValue.
- `int = obj.GetLimitMode ()` - Set/get the way voxel values will be limited. If this is set to None (the default), the output can have arbitrarily large values. If set to clamp, the output will be clamped to [MinValue,MaxValue]. If set to scale, the output will be linearly scaled between MinValue and MaxValue.
- `obj.SetLimitModeToNone ()` - Set/get the way voxel values will be limited. If this is set to None (the default), the output can have arbitrarily large values. If set to clamp, the output will be clamped to [MinValue,MaxValue]. If set to scale, the output will be linearly scaled between MinValue and MaxValue.
- `obj.SetLimitModeToClamp ()` - Set/get the way voxel values will be limited. If this is set to None (the default), the output can have arbitrarily large values. If set to clamp, the output will be clamped to [MinValue,MaxValue]. If set to scale, the output will be linearly scaled between MinValue and MaxValue.
- `obj.SetLimitModeToScale ()` - Set/get the way voxel values will be limited. If this is set to None (the default), the output can have arbitrarily large values. If set to clamp, the output will be clamped to [MinValue,MaxValue]. If set to scale, the output will be linearly scaled between MinValue and MaxValue.
- `obj.SetLimitModeToFreezeScale ()` - See the LimitMode method.
- `obj.SetMinValue (double )` - See the LimitMode method.
- `double = obj.GetMinValue ()` - See the LimitMode method.
- `obj.SetMaxValue (double )` - See the LimitMode method.
- `double = obj.GetMaxValue ()` - See the LimitMode method.
- `int = obj.GetNumberOfPointsSplatted ()` - This returns the number of points splatted (as opposed to discarded for being outside the image) during the previous pass.
- `obj.SetSplatConnection (vtkAlgorithmOutput )` - Convenience function for connecting the splat algorithm source. This is provided mainly for convenience using the filter with ParaView, VTK users should prefer SetInputConnection(1, splat) instead.