Section: Visualization Toolkit Common Classes
For further information about this surface, please consult the technical description "Parametric surfaces" in http://www.vtk.org/documents.php in the "VTK Technical Documents" section in the VTk.org web pages.
.SECTION Thanks Andrew Maclean a.maclean@cas.edu.au for creating and contributing the class.
To create an instance of class vtkParametricConicSpiral, simply invoke its constructor as follows
obj = vtkParametricConicSpiral
obj
is an instance of the vtkParametricConicSpiral class.
string = obj.GetClassName ()
int = obj.IsA (string name)
vtkParametricConicSpiral = obj.NewInstance ()
vtkParametricConicSpiral = obj.SafeDownCast (vtkObject o)
int = obj.GetDimension ()
- Set/Get the scale factor.
Default = 0.2
obj.SetA (double )
- Set/Get the scale factor.
Default = 0.2
double = obj.GetA ()
- Set/Get the scale factor.
Default = 0.2
obj.SetB (double )
- Set/Get the A function coefficient (see equation below).
Default = 1.
double = obj.GetB ()
- Set/Get the A function coefficient (see equation below).
Default = 1.
obj.SetC (double )
- Set/Get the B function coefficient (see equation below).
Default = 0.1.
double = obj.GetC ()
- Set/Get the B function coefficient (see equation below).
Default = 0.1.
obj.SetN (double )
- Set/Get the C function coefficient (see equation below).
Default = 2.
double = obj.GetN ()
- Set/Get the C function coefficient (see equation below).
Default = 2.
double = obj.EvaluateScalar (double uvw[3], double Pt[3], double Duvw[9])
- Calculate a user defined scalar using one or all of uvw, Pt, Duvw.
uvw are the parameters with Pt being the the cartesian point,
Duvw are the derivatives of this point with respect to u, v and w.
Pt, Duvw are obtained from Evaluate().
This function is only called if the ScalarMode has the value
vtkParametricFunctionSource::SCALAR_FUNCTION_DEFINED
If the user does not need to calculate a scalar, then the
instantiated function should return zero.