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Open CASCADE Technology
6.7.1
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Open CASCADE Technology
6.7.1
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defines a LOD (level of detailization) node of VRML specifying properties
of geometry and its appearance.
This group node is used to allow applications to switch between
various representations of objects automatically. The children of this
node typically represent the same object or objects at the varying
of Levels Of Detail (LOD), from highest detail to lowest.
The specified center point of the LOD is transformed by current
transformation into world space, and yhe distancefrom the transformed
center to the world-space eye point is calculated.
If thedistance is less than the first value in the ranges array,
than the first child of the LOD group is drawn. If between
the first and second values in the range array, the second child
is drawn, etc.
If there are N values in the range array, the LOD group should
have N+1 children.
Specifying too few children will result in the last child being
used repeatedly for the lowest lewels of detail; if too many children
are specified, the extra children w ll be ignored.
Each value in the ranges array should be greater than the previous
value, otherwise results are undefined.
More...
#include <Vrml_LOD.hxx>
Public Member Functions | |
| Vrml_LOD () | |
| Vrml_LOD (const Handle< TColStd_HArray1OfReal > &aRange, const gp_Vec &aCenter) | |
| void | SetRange (const Handle< TColStd_HArray1OfReal > &aRange) |
| Handle_TColStd_HArray1OfReal | Range () const |
| void | SetCenter (const gp_Vec &aCenter) |
| gp_Vec | Center () const |
| Standard_OStream & | Print (Standard_OStream &anOStream) const |
 Public Member Functions inherited from MMgt_TShared | |
| virtual void | Delete () const |
| Memory deallocator for transient classes. More... | |
| Public Member Functions inherited from Standard_Transient | |
| Standard_Transient () | |
| Empty constructor. More... | |
| Standard_Transient (const Standard_Transient &) | |
| Copy constructor – does nothing. More... | |
| Standard_Transient & | operator= (const Standard_Transient &) |
| Assignment operator, needed to avoid copying reference counter. More... | |
| virtual | ~Standard_Transient () |
| Destructor must be virtual. More... | |
| virtual void | ShallowDump (Standard_OStream &) const |
| virtual const Handle_Standard_Type & | DynamicType () const |
| Returns a type information object about this object. More... | |
| Standard_Boolean | IsInstance (const Handle_Standard_Type &theType) const |
| Returns a true value if this is an instance of Type. More... | |
| Standard_Boolean | IsInstance (const Standard_CString theTypeName) const |
| Returns a true value if this is an instance of TypeName. More... | |
| Standard_Boolean | IsKind (const Handle_Standard_Type &theType) const |
| Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More... | |
| Standard_Boolean | IsKind (const Standard_CString theTypeName) const |
| Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More... | |
| virtual Handle_Standard_Transient | This () const |
| Returns a Handle which references this object. Must never be called to objects created in stack. More... | |
| Standard_Integer | GetRefCount () const |
| Get the reference counter of this object. More... | |
defines a LOD (level of detailization) node of VRML specifying properties
of geometry and its appearance.
This group node is used to allow applications to switch between
various representations of objects automatically. The children of this
node typically represent the same object or objects at the varying
of Levels Of Detail (LOD), from highest detail to lowest.
The specified center point of the LOD is transformed by current
transformation into world space, and yhe distancefrom the transformed
center to the world-space eye point is calculated.
If thedistance is less than the first value in the ranges array,
than the first child of the LOD group is drawn. If between
the first and second values in the range array, the second child
is drawn, etc.
If there are N values in the range array, the LOD group should
have N+1 children.
Specifying too few children will result in the last child being
used repeatedly for the lowest lewels of detail; if too many children
are specified, the extra children w ll be ignored.
Each value in the ranges array should be greater than the previous
value, otherwise results are undefined.
| Vrml_LOD::Vrml_LOD | ( | ) |
| Vrml_LOD::Vrml_LOD | ( | const Handle< TColStd_HArray1OfReal > & | aRange, |
| const gp_Vec & | aCenter | ||
| ) |
| gp_Vec Vrml_LOD::Center | ( | ) | const |
| Standard_OStream& Vrml_LOD::Print | ( | Standard_OStream & | anOStream | ) | const |
| Handle_TColStd_HArray1OfReal Vrml_LOD::Range | ( | ) | const |
| void Vrml_LOD::SetCenter | ( | const gp_Vec & | aCenter | ) |
| void Vrml_LOD::SetRange | ( | const Handle< TColStd_HArray1OfReal > & | aRange | ) |
1.8.5