a combination of vtkColorTransferFunction and vtkLookupTable.
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#include <vtkDiscretizableColorTransferFunction.h>
Inherits vtkColorTransferFunction.
a combination of vtkColorTransferFunction and vtkLookupTable.
This is a cross between a vtkColorTransferFunction and a vtkLookupTable selectively combiniting the functionality of both. NOTE: One must call Build() after making any changes to the points in the ColorTransferFunction to ensure that the discrete and non-discrete version match up.
- Tests:
- vtkDiscretizableColorTransferFunction (Tests)
Definition at line 37 of file vtkDiscretizableColorTransferFunction.h.
vtkDiscretizableColorTransferFunction::vtkDiscretizableColorTransferFunction |
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vtkDiscretizableColorTransferFunction::~vtkDiscretizableColorTransferFunction |
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virtual const char* vtkDiscretizableColorTransferFunction::GetClassName |
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static int vtkDiscretizableColorTransferFunction::IsTypeOf |
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const char * |
type | ) |
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virtual int vtkDiscretizableColorTransferFunction::IsA |
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const char * |
type | ) |
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void vtkDiscretizableColorTransferFunction::PrintSelf |
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ostream & |
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vtkIndent |
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virtual void vtkDiscretizableColorTransferFunction::Build |
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Generate discretized lookup table, if applicable. This method must be called after changes to the ColorTransferFunction otherwise the discretized version will be inconsitent with the non-discretized one.
virtual void vtkDiscretizableColorTransferFunction::SetDiscretize |
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int |
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Set if the values are to mapped after discretization. The number of discrete values is set by using SetNumberOfValues(). Not set by default, i.e. color value is determined by interpolating at the scalar value.
virtual int vtkDiscretizableColorTransferFunction::GetDiscretize |
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Set if the values are to mapped after discretization. The number of discrete values is set by using SetNumberOfValues(). Not set by default, i.e. color value is determined by interpolating at the scalar value.
virtual void vtkDiscretizableColorTransferFunction::DiscretizeOn |
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Set if the values are to mapped after discretization. The number of discrete values is set by using SetNumberOfValues(). Not set by default, i.e. color value is determined by interpolating at the scalar value.
virtual void vtkDiscretizableColorTransferFunction::DiscretizeOff |
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Set if the values are to mapped after discretization. The number of discrete values is set by using SetNumberOfValues(). Not set by default, i.e. color value is determined by interpolating at the scalar value.
virtual void vtkDiscretizableColorTransferFunction::SetUseLogScale |
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int |
useLogScale | ) |
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Get/Set if log scale must be used while mapping scalars to colors. The default is 0.
virtual int vtkDiscretizableColorTransferFunction::GetUseLogScale |
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Get/Set if log scale must be used while mapping scalars to colors. The default is 0.
void vtkDiscretizableColorTransferFunction::SetNumberOfValues |
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vtkIdType |
number | ) |
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Set the number of values i.e. colors to be generated in the discrete lookup table. This has no effect if Discretize is off. The default is
virtual vtkIdType vtkDiscretizableColorTransferFunction::GetNumberOfValues |
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Set the number of values i.e. colors to be generated in the discrete lookup table. This has no effect if Discretize is off. The default is
virtual unsigned char* vtkDiscretizableColorTransferFunction::MapValue |
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double |
v | ) |
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Map one value through the lookup table and return a color defined as a RGBA unsigned char tuple (4 bytes).
virtual void vtkDiscretizableColorTransferFunction::GetColor |
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double |
v, |
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double |
rgb[3] |
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Map one value through the lookup table and return the color as an RGB array of doubles between 0 and 1.
An internal method maps a data array into a 4-component, unsigned char RGBA array. The color mode determines the behavior of mapping. If VTK_COLOR_MODE_DEFAULT is set, then unsigned char data arrays are treated as colors (and converted to RGBA if necessary); otherwise, the data is mapped through this instance of ScalarsToColors. The offset is used for data arrays with more than one component; it indicates which component to use to do the blending. When the component argument is -1, then the this object uses its own selected technique to change a vector into a scalar to map.
double* vtkDiscretizableColorTransferFunction::GetRGBPoints |
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Returns the (x, r, g, b) values as an array.
virtual void vtkDiscretizableColorTransferFunction::SetAlpha |
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double |
alpha | ) |
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Specify an additional opacity (alpha) value to blend with. Values != 1 modify the resulting color consistent with the requested form of the output. This is typically used by an actor in order to blend its opacity. Overridden to pass the alpha to the internal vtkLookupTable.
virtual void vtkDiscretizableColorTransferFunction::SetNanColor |
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double |
r, |
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double |
g, |
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double |
b |
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Set the color to use when a NaN (not a number) is encountered. This is an RGB 3-tuple color of doubles in the range [0,1]. Overridden to pass the NanColor to the internal vtkLookupTable.
virtual void vtkDiscretizableColorTransferFunction::SetNanColor |
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double |
rgb[3] | ) |
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virtual int vtkDiscretizableColorTransferFunction::UsingLogScale |
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virtual vtkIdType vtkDiscretizableColorTransferFunction::GetNumberOfAvailableColors |
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Get the number of available colors for mapping to.
int vtkDiscretizableColorTransferFunction::Discretize |
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int vtkDiscretizableColorTransferFunction::UseLogScale |
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vtkIdType vtkDiscretizableColorTransferFunction::NumberOfValues |
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vtkTimeStamp vtkDiscretizableColorTransferFunction::BuildTime |
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The documentation for this class was generated from the following file: