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vtkFrustumCoverageCuller Class Reference
cull props based on frustum coverage.
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#include <vtkFrustumCoverageCuller.h>
Inheritance diagram for vtkFrustumCoverageCuller:
[legend]Collaboration diagram for vtkFrustumCoverageCuller:
[legend]List of all members.
Detailed Description
cull props based on frustum coverage.
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Date:
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2000/12/10 20:08:38
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Revision:
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1.18
vtkFrustumCoverageCuller will cull props based on the coverage in the view frustum. The coverage is computed by enclosing the prop in a bounding sphere, projecting that to the viewing coordinate system, then taking a slice through the view frustum at the center of the sphere. This results in a circle on the plane slice through the view frustum. This circle is enclosed in a squared, and the fraction of the plane slice that this square covers is the coverage. This is a number between 0 and 1. If the number is less than the MinumumCoverage, the allocated render time for that prop is set to zero. If it is greater than the MaximumCoverage, the allocated render time is set to 1.0. In between, a linear ramp is used to convert coverage into allocated render time.
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See also:
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vtkCuller
Definition at line 74 of file vtkFrustumCoverageCuller.h.
Constructor & Destructor Documentation
| vtkFrustumCoverageCuller::vtkFrustumCoverageCuller |
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[protected] |
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| vtkFrustumCoverageCuller::~vtkFrustumCoverageCuller |
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[inline, protected] |
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| vtkFrustumCoverageCuller::vtkFrustumCoverageCuller |
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const vtkFrustumCoverageCuller & |
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[inline, protected] |
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Member Function Documentation
| vtkFrustumCoverageCuller* vtkFrustumCoverageCuller::New |
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[static] |
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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* vtkFrustumCoverageCuller::GetClassName |
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[virtual] |
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Return the class name as a string. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkCuller. |
| int vtkFrustumCoverageCuller::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 vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkCuller. |
| virtual int vtkFrustumCoverageCuller::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 vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkCuller. |
| vtkFrustumCoverageCuller* vtkFrustumCoverageCuller::SafeDownCast |
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vtkObject * |
o |
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[static] |
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Will cast the supplied object to vtkObject* is this is a safe operation (i.e., a safe downcast); otherwise NULL is returned. This method is defined in all subclasses of vtkObject with the vtkTypeMacro found in vtkSetGet.h.
Reimplemented from vtkCuller. |
| void vtkFrustumCoverageCuller::PrintSelf |
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ostream & |
os, |
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vtkIndent |
indent |
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[virtual] |
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Methods invoked by print to print information about the object including superclasses. Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.
Reimplemented from vtkObject. |
| virtual void vtkFrustumCoverageCuller::SetMinimumCoverage |
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float |
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[virtual] |
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Set/Get the minimum coverage - props with less coverage than this are given no time to render (they are culled) |
| virtual float vtkFrustumCoverageCuller::GetMinimumCoverage |
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[virtual] |
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| virtual void vtkFrustumCoverageCuller::SetMaximumCoverage |
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float |
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[virtual] |
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Set/Get the maximum coverage - props with more coverage than this are given an allocated render time of 1.0 (the maximum) |
| virtual float vtkFrustumCoverageCuller::GetMaximumCoverage |
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[virtual] |
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| virtual void vtkFrustumCoverageCuller::SetSortingStyle |
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int |
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[virtual] |
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Set the sorting style - none, front-to-back or back-to-front The default is none |
| virtual int vtkFrustumCoverageCuller::GetSortingStyle |
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[virtual] |
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| void vtkFrustumCoverageCuller::SetSortingStyleToNone |
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[inline] |
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| void vtkFrustumCoverageCuller::SetSortingStyleToBackToFront |
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[inline] |
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| void vtkFrustumCoverageCuller::SetSortingStyleToFrontToBack |
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[inline] |
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| const char* vtkFrustumCoverageCuller::GetSortingStyleAsString |
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void |
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| float vtkFrustumCoverageCuller::Cull |
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vtkRenderer * |
ren, |
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vtkProp ** |
propList, |
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int & |
listLength, |
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int & |
initialized |
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[virtual] |
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WARNING: INTERNAL METHOD - NOT INTENDED FOR GENERAL USE DO NOT USE THESE METHODS OUTSIDE OF THE RENDERING PROCESS Perform the cull operation This method should only be called by vtkRenderer as part of the render process
Reimplemented from vtkCuller. |
| void vtkFrustumCoverageCuller::operator= |
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const vtkFrustumCoverageCuller & |
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[inline, protected] |
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Member Data Documentation
float vtkFrustumCoverageCuller::MinimumCoverage [protected]
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float vtkFrustumCoverageCuller::MaximumCoverage [protected]
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int vtkFrustumCoverageCuller::SortingStyle [protected]
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The documentation for this class was generated from the following file:
Generated on Wed Nov 21 12:48:01 2001 for VTK by
1.2.11.1 written by Dimitri van Heesch,
© 1997-2001