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vtkImplicitBoolean

Section: Visualization Toolkit Filtering Classes

# Usage

vtkImplicitBoolean is an implicit function consisting of boolean combinations of implicit functions. The class has a list of functions (FunctionList) that are combined according to a specified operator (VTK_UNION or VTK_INTERSECTION or VTK_DIFFERENCE). You can use nested combinations of vtkImplicitFunction's (and/or vtkImplicitBoolean) to create elaborate implicit functions. vtkImplicitBoolean is a concrete implementation of vtkImplicitFunction.

The operators work as follows. The VTK_UNION operator takes the minimum value of all implicit functions. The VTK_INTERSECTION operator takes the maximum value of all implicit functions. The VTK_DIFFERENCE operator subtracts the 2nd through last implicit functions from the first. The VTK_UNION_OF_MAGNITUDES takes the minimum absolute value of the implicit functions.

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

      obj = vtkImplicitBoolean

# Methods

The class vtkImplicitBoolean 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 vtkImplicitBoolean class.

- `string = obj.GetClassName ()`
- `int = obj.IsA (string name)`
- `vtkImplicitBoolean = obj.NewInstance ()`
- `vtkImplicitBoolean = obj.SafeDownCast (vtkObject o)`
- `double = obj.EvaluateFunction (double x[3])` - Evaluate boolean combinations of implicit function using current operator.
- `double = obj.EvaluateFunction (double x, double y, double z)` - Evaluate boolean combinations of implicit function using current operator.
- `obj.EvaluateGradient (double x[3], double g[3])` - Evaluate gradient of boolean combination.
- `long = obj.GetMTime ()` - Override modified time retrieval because of object dependencies.
- `obj.AddFunction (vtkImplicitFunction in)` - Add another implicit function to the list of functions.
- `obj.RemoveFunction (vtkImplicitFunction in)` - Remove a function from the list of implicit functions to boolean.
- `vtkImplicitFunctionCollection = obj.GetFunction ()` - Return the collection of implicit functions.
- `obj.SetOperationType (int )` - Specify the type of boolean operation.
- `int = obj.GetOperationTypeMinValue ()` - Specify the type of boolean operation.
- `int = obj.GetOperationTypeMaxValue ()` - Specify the type of boolean operation.
- `int = obj.GetOperationType ()` - Specify the type of boolean operation.
- `obj.SetOperationTypeToUnion ()` - Specify the type of boolean operation.
- `obj.SetOperationTypeToIntersection ()` - Specify the type of boolean operation.
- `obj.SetOperationTypeToDifference ()` - Specify the type of boolean operation.
- `obj.SetOperationTypeToUnionOfMagnitudes ()` - Specify the type of boolean operation.
- `string = obj.GetOperationTypeAsString ()` - Specify the type of boolean operation.