Package com.openinventor.inventor.actions

Class SoSimplifyAction

  • Direct Known Subclasses:
    SoGlobalSimplifyAction, SoReorganizeAction, SoShapeSimplifyAction
    public class SoSimplifyAction
extends SoAction
    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 Detail

      • SoSimplifyAction

        public SoSimplifyAction​(SoSimplifier _simplifier)
        Constructor. The algorithm used for simplifying is defined by the SoSimplifier class that is passed in the constructor.

    • Method Detail

      • setRanges

        public void setRanges​(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.

      • setUrlName

        public void setUrlName​(java.lang.String name)
        Sets the name used when creating Inline files for each simplified child.

      • getDirectRanges

        public java.nio.FloatBuffer getDirectRanges()
        Gets the ranges that will be used in the LevelOfSimplification node to decide which level of detail to display.

      • enableElement

        public static void enableElement​(java.lang.Class<? extends Inventor> t,
                                 int stkIndex)

      • setSimplificationLevels

        public void setSimplificationLevels​(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.

      • getDirectSimplificationLevels

        public java.nio.FloatBuffer getDirectSimplificationLevels()
        Gets percentages to produce at each level of detail.

      • getNumSimplificationLevels

        public int getNumSimplificationLevels()
        Gets number of levels of detail to produce.

      • getSimplificationLevels

        public float[] getSimplificationLevels()
        Gets percentages to produce at each level of detail.

      • isVerbose

        public boolean isVerbose()
        Gets verbosity flag. If true, the simplify action prints out messages at each stage of the simplification.

      • setInlineLOD

        public void setInlineLOD​(boolean i)
        Sets inlineLOD flag. If true, each simplified child is written into a separate file using SoWWWInline nodes.

      • setMinTriangles

        public void 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.

      • getUrlName

        public java.lang.String getUrlName()
        Gets the name used when creating Inline files for each simplified child.

      • setVerbosity

        public void setVerbosity​(boolean v)
        Sets verbosity flag. If true, the simplify action prints out messages at each stage of the simplification.

      • isInlineLOD

        public boolean isInlineLOD()
        Gets inlineLOD flag. If true, each simplified child is written into a separate file using SoWWWInline nodes.

      • getSizeFactor

        public float getSizeFactor()
        Gets the scale factor to use to decide what values of ranges to use in the LevelOfSimplification node.

      • getNumRanges

        public int getNumRanges()
        Gets the number of ranges that will be used in the LevelOfSimplification node to decide which level of detail to display.

      • isRenderCulling

        public int isRenderCulling()
        Gets render culling flag. If true, the "renderCulling" field will be set to ON for the Separators that hold each simplified level.

      • getRanges

        public float[] getRanges()
        Gets the ranges that will be used in the LevelOfSimplification node to decide which level of detail to display.

      • getMinTriangles

        public int getMinTriangles()
        Gets the minimum number of triangles for a simplified child.

      • setSizeFactor

        public void setSizeFactor​(float size)
        Sets the scale factor to use to decide what values of ranges to use in the LevelOfSimplification node.

      • setRenderCulling

        public void setRenderCulling​(boolean r)
        Sets render culling flag. If true, the "renderCulling" field will be set to ON for the Separators that hold each simplified level.