SoSimplifyAction Class Reference
[Actions]
Abstract base class for simplifying scene graphs.
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#include <Inventor/actions/SoSimplifyAction.h>
Public Member Functions | |
| virtual SoType | getTypeId () const |
| SoSimplifyAction (SoSimplifier *_simplifier) | |
| ~SoSimplifyAction () | |
| void | setSimplificationLevels (int num, const float levels[]) |
| const float * | getSimplificationLevels () const |
| int | getNumSimplificationLevels () const |
| void | setRanges (int num, const float newRanges[]) |
| const float * | getRanges () const |
| int | getNumRanges () const |
| void | setSizeFactor (float size) |
| float | getSizeFactor () const |
| void | setInlineLOD (SbBool i) |
| SbBool | isInlineLOD () const |
| void | setUrlName (const SbString name) |
| SbString | getUrlName () const |
| void | setVerbosity (SbBool v) |
| SbBool | isVerbose () const |
| void | setMinTriangles (int mt) |
| int | getMinTriangles () const |
| void | setRenderCulling (SbBool r) |
| int | isRenderCulling () const |
Static Public Member Functions | |
| static SoType | getClassTypeId () |
Detailed Description
Abstract base class for simplifying scene graphs.
This class is the base class of the simplify actions that produce versions of a scene graph with fewer triangles. The simplify actions can generate either several simplified levels of the original geometry, grouped by a LevelOfSimplification node, or just one reduced level of detail. If a single level is computed, the action creates a single IndexedTriangleFaceSet.
Each simplified sub-levels can be stored in regular separators or in WWWInline nodes. In this case, the urlName defines the full url to use for each WWWInline. For instance if urlName = "dir/file", the action will generate "dir/file_1.wrl","dir/file_2.wrl", and so on. When a simplify action generates Level of Simplification nodes, the range field of each Level of Simplification node can be given globally in the range field of the simplify action. If the simplify action range field is not set, the simplify action computes it automatically for each LevelOfSimplification node. In this case, the sizeFactor field can be used to customize the range computation.
A minimum number of triangles can be set to stop the simplification when the object becomes too small. Specifying 0.0 for the last level inserts an empty node in the scene graph. This allows you to avoid rendering an object that is too small or too far from the viewer.
Available simplification actions are:
- SoGlobalSimplifyAction
Traverses the scene graph and collects all the triangles into a single shape which is then simplified.
- SoShapeSimplifyAction
Traverses the scene graph and simplifies each shape independently.
- SoReorganizeAction
Reorganizes the scene graph by grouping shapes with common properties, then combines those shapes in a single shape and runs the simplifier on it.
SEE ALSO
SoAction, SoLevelOfSimplification, SoGlobalSimplifyAction, SoShapeSimplifyAction, SoReorganizeAction
Constructor & Destructor Documentation
| SoSimplifyAction::SoSimplifyAction | ( | SoSimplifier * | _simplifier | ) |
Constructor.
The algorithm used for simplifying is defined by the SoSimplifier class that is passed in the constructor.
| SoSimplifyAction::~SoSimplifyAction | ( | ) |
Destructor.
Member Function Documentation
| static SoType SoSimplifyAction::getClassTypeId | ( | ) | [static] |
Returns the type identifier for this class.
Reimplemented from SoAction.
Reimplemented in SoGlobalSimplifyAction, SoReorganizeAction, and SoShapeSimplifyAction.
| int SoSimplifyAction::getMinTriangles | ( | ) | const |
Gets the minimum number of triangles for a simplified child.
| int SoSimplifyAction::getNumRanges | ( | ) | const |
Gets the number of ranges that will be used in the LevelOfSimplification node to decide which level of detail to display.
| int SoSimplifyAction::getNumSimplificationLevels | ( | ) | const |
Gets number of levels of detail to produce.
| const float* SoSimplifyAction::getRanges | ( | ) | const |
Gets the ranges that will be used in the LevelOfSimplification node to decide which level of detail to display.
| const float* SoSimplifyAction::getSimplificationLevels | ( | ) | const |
Gets percentages to produce at each level of detail.
| float SoSimplifyAction::getSizeFactor | ( | ) | const |
Gets the scale factor to use to decide what values of ranges to use in the LevelOfSimplification node.
| virtual SoType SoSimplifyAction::getTypeId | ( | ) | const [virtual] |
Returns the type identifier for this specific instance.
Implements SoTypedObject.
Reimplemented in SoGlobalSimplifyAction, SoReorganizeAction, and SoShapeSimplifyAction.
| SbString SoSimplifyAction::getUrlName | ( | ) | const |
Gets the name used when creating Inline files for each simplified child.
| SbBool SoSimplifyAction::isInlineLOD | ( | ) | const |
Gets inlineLOD flag.
If true, each simplified child is written into a separate file using SoWWWInline nodes.
| int SoSimplifyAction::isRenderCulling | ( | ) | const |
Gets render culling flag.
If true, the "renderCulling" field will be set to ON for the Separators that hold each simplified level.
| SbBool SoSimplifyAction::isVerbose | ( | ) | const |
Gets verbosity flag.
If true, the simplify action prints out messages at each stage of the simplification.
| void SoSimplifyAction::setInlineLOD | ( | SbBool | i | ) |
Sets inlineLOD flag.
If true, each simplified child is written into a separate file using SoWWWInline nodes.
| void SoSimplifyAction::setMinTriangles | ( | int | mt | ) |
Sets the minimum number of triangles for a simplified child; if a given percentage would create a simplified version that went below this minimum, no simplified chld is produced for this level.
| void SoSimplifyAction::setRanges | ( | int | num, | |
| const float | newRanges[] | |||
| ) |
Sets the ranges that will be used in the LevelOfSimplification node to decide which level of detail to display.
This is optional; if not given, the size factor will be used to generate range values.
| void SoSimplifyAction::setRenderCulling | ( | SbBool | r | ) |
Sets render culling flag.
If true, the "renderCulling" field will be set to ON for the Separators that hold each simplified level.
| void SoSimplifyAction::setSimplificationLevels | ( | int | num, | |
| const float | levels[] | |||
| ) |
Sets number of levels of detail to produce and what percentage to produce at each level.
An example array would be [1.0, 0.3, 0.1], which would generate a LevelOfSimplification node with the original geometry and then two simplified children, one with 30% of the triangles and the other with 10% of the triangles in the original.
| void SoSimplifyAction::setSizeFactor | ( | float | size | ) |
Sets the scale factor to use to decide what values of ranges to use in the LevelOfSimplification node.
| void SoSimplifyAction::setUrlName | ( | const SbString | name | ) |
Sets the name used when creating Inline files for each simplified child.
| void SoSimplifyAction::setVerbosity | ( | SbBool | v | ) |
Sets verbosity flag.
If true, the simplify action prints out messages at each stage of the simplification.
The documentation for this class was generated from the following file:
- Inventor/actions/SoSimplifyAction.h