vtkEncodedGradientShader Class Reference
#include <vtkEncodedGradientShader.h>
Inheritance diagram for vtkEncodedGradientShader:
[legend]Collaboration diagram for vtkEncodedGradientShader:
[legend]List of all members.
Detailed Description
Compute shading tables for encoded normals.
vtkEncodedGradientShader computes shading tables for encoded normals that indicates the amount of diffuse and specular illumination that is received from all light sources at a surface location with that normal. For diffuse illumination this is accurate, but for specular illumination it is approximate for perspective projections since the center view direction is always used as the view direction. Since the shading table is dependent on the volume (for the transformation that must be applied to the normals to put them into world coordinates) there is a shading table per volume. This is necessary because multiple volumes can share a volume mapper.
- Created by:
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- CVS contributions (if > 5%):
- Avila, Lisa (80%)
- Martin, Ken (6%)
- Lorensen, Bill (5%)
- CVS logs (CVSweb):
/Rendering/vtkEncodedGradientShader.h)/Rendering/vtkEncodedGradientShader.cxx)
Definition at line 55 of file vtkEncodedGradientShader.h.
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Public Types |
| typedef vtkObject | Superclass |
Public Member Functions |
| virtual const char * | GetClassName () |
| virtual int | IsA (const char *type) |
| void | PrintSelf (ostream &os, vtkIndent indent) |
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| virtual void | SetZeroNormalDiffuseIntensity (float) |
| virtual float | GetZeroNormalDiffuseIntensity () |
| virtual void | SetZeroNormalSpecularIntensity (float) |
| virtual float | GetZeroNormalSpecularIntensity () |
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| void | UpdateShadingTable (vtkRenderer *ren, vtkVolume *vol, vtkEncodedGradientEstimator *gradest) |
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| float * | GetRedDiffuseShadingTable (vtkVolume *vol) |
| float * | GetGreenDiffuseShadingTable (vtkVolume *vol) |
| float * | GetBlueDiffuseShadingTable (vtkVolume *vol) |
| float * | GetRedSpecularShadingTable (vtkVolume *vol) |
| float * | GetGreenSpecularShadingTable (vtkVolume *vol) |
| float * | GetBlueSpecularShadingTable (vtkVolume *vol) |
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| virtual void | SetActiveComponent (int) |
| virtual int | GetActiveComponent () |
Static Public Member Functions |
| vtkEncodedGradientShader * | New () |
| int | IsTypeOf (const char *type) |
| vtkEncodedGradientShader * | SafeDownCast (vtkObject *o) |
Protected Member Functions |
| | vtkEncodedGradientShader () |
| | ~vtkEncodedGradientShader () |
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| void | BuildShadingTable (int index, double lightDirection[3], double lightColor[3], double lightIntensity, double viewDirection[3], double material[4], int twoSided, vtkEncodedGradientEstimator *gradest, int updateFlag) |
Protected Attributes |
| float * | ShadingTable [VTK_MAX_SHADING_TABLES][6] |
| vtkVolume * | ShadingTableVolume [VTK_MAX_SHADING_TABLES] |
| int | ShadingTableSize [VTK_MAX_SHADING_TABLES] |
| int | ActiveComponent |
| float | ZeroNormalDiffuseIntensity |
| float | ZeroNormalSpecularIntensity |
Member Typedef Documentation
Constructor & Destructor Documentation
| vtkEncodedGradientShader::vtkEncodedGradientShader |
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Member Function Documentation
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Create an object with Debug turned off, modified time initialized to zero, and reference counting on.
Reimplemented from vtkObject. |
| virtual const char* vtkEncodedGradientShader::GetClassName |
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[virtual] |
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| int vtkEncodedGradientShader::IsTypeOf |
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const char * |
type |
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[static] |
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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 vtkTypeRevisionMacro found in vtkSetGet.h.
Reimplemented from vtkObject. |
| virtual int vtkEncodedGradientShader::IsA |
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const char * |
type |
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[virtual] |
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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 vtkTypeRevisionMacro found in vtkSetGet.h.
Reimplemented from vtkObject. |
| void vtkEncodedGradientShader::PrintSelf |
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ostream & |
os, |
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vtkIndent |
indent |
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[virtual] |
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Print the vtkEncodedGradientShader
Reimplemented from vtkObject. |
| virtual void vtkEncodedGradientShader::SetZeroNormalDiffuseIntensity |
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float |
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[virtual] |
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Set / Get the intensity diffuse / specular light used for the zero normals. |
| virtual float vtkEncodedGradientShader::GetZeroNormalDiffuseIntensity |
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[virtual] |
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Set / Get the intensity diffuse / specular light used for the zero normals. |
| virtual void vtkEncodedGradientShader::SetZeroNormalSpecularIntensity |
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float |
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[virtual] |
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Set / Get the intensity diffuse / specular light used for the zero normals. |
| virtual float vtkEncodedGradientShader::GetZeroNormalSpecularIntensity |
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[virtual] |
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Set / Get the intensity diffuse / specular light used for the zero normals. |
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Cause the shading table to be updated |
| float* vtkEncodedGradientShader::GetRedDiffuseShadingTable |
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vtkVolume * |
vol |
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Get the red/green/blue shading table. |
| float* vtkEncodedGradientShader::GetGreenDiffuseShadingTable |
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vtkVolume * |
vol |
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Get the red/green/blue shading table. |
| float* vtkEncodedGradientShader::GetBlueDiffuseShadingTable |
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vtkVolume * |
vol |
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Get the red/green/blue shading table. |
| float* vtkEncodedGradientShader::GetRedSpecularShadingTable |
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vtkVolume * |
vol |
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Get the red/green/blue shading table. |
| float* vtkEncodedGradientShader::GetGreenSpecularShadingTable |
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vtkVolume * |
vol |
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Get the red/green/blue shading table. |
| float* vtkEncodedGradientShader::GetBlueSpecularShadingTable |
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vtkVolume * |
vol |
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Get the red/green/blue shading table. |
| virtual void vtkEncodedGradientShader::SetActiveComponent |
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int |
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Set the active component for shading. This component's ambient / diffuse / specular / specular power values will be used to create the shading table. The default is 1.0 |
| virtual int vtkEncodedGradientShader::GetActiveComponent |
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Set the active component for shading. This component's ambient / diffuse / specular / specular power values will be used to create the shading table. The default is 1.0 |
| void vtkEncodedGradientShader::BuildShadingTable |
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int |
index, |
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double |
lightDirection[3], |
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double |
lightColor[3], |
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double |
lightIntensity, |
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double |
viewDirection[3], |
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double |
material[4], |
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int |
twoSided, |
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vtkEncodedGradientEstimator * |
gradest, |
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int |
updateFlag |
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[protected] |
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Build a shading table for a light with the specified direction, and color for an object of the specified material properties. material[0] = ambient, material[1] = diffuse, material[2] = specular and material[3] = specular exponent. If the ambient flag is 1, then ambient illumination is added. If not, then this means we are calculating the "other side" of two sided lighting, so no ambient intensity is added in. If the update flag is 0, the shading table is overwritten with these new shading values. If the updateFlag is 1, then the computed light contribution is added to the current shading table values. There is one shading table per volume, and the index value indicated which index table should be used. It is computed in the UpdateShadingTable method. |
Member Data Documentation
The documentation for this class was generated from the following file: