Package com.jme3.bullet.collision.shapes

Class ConicalFrustum

java.lang.Object
com.jme3.bullet.NativePhysicsObject
com.jme3.bullet.collision.shapes.CollisionShape
com.jme3.bullet.collision.shapes.ConvexShape
com.jme3.bullet.collision.shapes.ConicalFrustum
All Implemented Interfaces:
com.jme3.export.Savable, com.jme3.util.clone.JmeCloneable, Cloneable, Comparable<NativePhysicsObject>
public class ConicalFrustum extends ConvexShape
A collision shape for a conical frustum with uniform density, based on btConvexInternalShape. By convention, the local Y axis is the height axis, with the "A" base having y<0 and the "B" base having y>0.

This is an imprecise shape; margin always expands the shape.

  • Field Details

    • logger2

      public static final Logger logger2
      message logger for this class

  • Constructor Details

    • ConicalFrustum

      protected ConicalFrustum()
      No-argument constructor needed by SavableClassUtil.

    • ConicalFrustum

      public ConicalFrustum(float a, float b, float height)
      Instantiate a conical frustum with the specified dimensions.
      Parameters:
      a - the desired radius of the "A" base for scale=(1,1,1) (>0)
      b - the desired radius of the "B" base for scale=(1,1,1) (>0)
      height - the desired height for scale=(1,1,1) (>0)

  • Method Details

    • aRadius

      public float aRadius()
      Return the radius of the "A" base.
      Returns:
      the unscaled radius (>0)

    • bRadius

      public float bRadius()
      Return the radius of the "B" base.
      Returns:
      the unscaled radius (>0)

    • height

      public float height()
      Return the height of the frustum.
      Returns:
      the unscaled height (>0)

    • canScale

      public boolean canScale(com.jme3.math.Vector3f scale)
      Test whether the specified scale factors can be applied to the shape. For a conical frustum, scaling must preserve the circular cross section.
      Overrides:
      canScale in class CollisionShape
      Parameters:
      scale - the desired scale factor for each local axis (may be null, unaffected)
      Returns:
      true if applicable, otherwise false

    • cloneFields

      public void cloneFields(com.jme3.util.clone.Cloner cloner, Object original)
      Callback from Cloner to convert this shallow-cloned shape into a deep-cloned one, using the specified Cloner and original to resolve copied fields.
      Specified by:
      cloneFields in interface com.jme3.util.clone.JmeCloneable
      Overrides:
      cloneFields in class CollisionShape
      Parameters:
      cloner - the Cloner that's cloning this shape (not null)
      original - the instance from which this shape was shallow-cloned (not null, unaffected)

    • maxRadius

      public float maxRadius()
      Calculate how far the scaled shape extends from its center of mass, including collision margin.
      Overrides:
      maxRadius in class CollisionShape
      Returns:
      the distance (in physics-space units, ≥0)

    • read

      public void read(com.jme3.export.JmeImporter importer) throws IOException
      De-serialize the shape from the specified importer, for example when loading from a J3O file.
      Specified by:
      read in interface com.jme3.export.Savable
      Overrides:
      read in class CollisionShape
      Parameters:
      importer - (not null)
      Throws:
      IOException - from the importer

    • scaledVolume

      public float scaledVolume()
      Estimate the volume of the collision shape, including scale and margin.
      Overrides:
      scaledVolume in class ConvexShape
      Returns:
      the estimated volume (in physics-space units cubed, ≥0)

    • write

      public void write(com.jme3.export.JmeExporter exporter) throws IOException
      Serialize the shape to the specified exporter, for example when saving to a J3O file.
      Specified by:
      write in interface com.jme3.export.Savable
      Overrides:
      write in class CollisionShape
      Parameters:
      exporter - (not null)
      Throws:
      IOException - from the exporter