Constructor Detail

• BoundingBox

  public BoundingBox()

  Creates an empty box. The minimum point will have all components set to positive infinity, and the maximum will have all components set to negative infinity.

• BoundingBox

  public BoundingBox​(BoundingBox b)

  Creates a copy of the given box.

  Parameters:

  b - bounding box to copy

• BoundingBox

  public BoundingBox​(Point3 p)

  Creates a bounding box containing only the specified point.

  Parameters:

  p - point to include

• BoundingBox

  public BoundingBox​(float x,
                     float y,
                     float z)

  Creates a bounding box containing only the specified point.

  Parameters:

  x - x coordinate of the point to include

  y - y coordinate of the point to include

  z - z coordinate of the point to include

• BoundingBox

  public BoundingBox​(float size)

  Creates a bounding box centered around the origin.

  Parameters:

  size - half edge length of the bounding box

Method Detail

• getMinimum

  public final Point3 getMinimum()

  Gets the minimum corner of the box. That is the corner of smallest coordinates on each axis. Note that the returned reference is not cloned for efficiency purposes so care must be taken not to change the coordinates of the point.

  Returns:

  a reference to the minimum corner

• getMaximum

  public final Point3 getMaximum()

  Gets the maximum corner of the box. That is the corner of largest coordinates on each axis. Note that the returned reference is not cloned for efficiency purposes so care must be taken not to change the coordinates of the point.

  Returns:

  a reference to the maximum corner

• getCenter

  public final Point3 getCenter()

  Gets the center of the box, computed as (min + max) / 2.

  Returns:

  a reference to the center of the box

• getCorner

  public final Point3 getCorner​(int i)

  Gets a corner of the bounding box. The index scheme uses the binary representation of the index to decide which corner to return. Corner 0 is equivalent to the minimum and corner 7 is equivalent to the maximum.

  Parameters:

  i - a corner index, from 0 to 7

  Returns:

  the corresponding corner

• getBound

  public final float getBound​(int i)

  Gets a specific coordinate of the surface's bounding box.

  Parameters:

  i - index of a side from 0 to 5

  Returns:

  value of the request bounding box side

• getExtents

  public final Vector3 getExtents()

  Gets the extents vector for the box. This vector is computed as (max - min). Its coordinates are always positive and represent the dimensions of the box along the three axes.

  Returns:

  a refreence to the extent vector

  See Also:

  Vector3.length()

• getArea

  public final float getArea()

  Gets the surface area of the box.

  Returns:

  surface area

• getVolume

  public final float getVolume()

  Gets the box's volume

  Returns:

  volume

• enlargeUlps

  public final void enlargeUlps()

  Enlarge the bounding box by the minimum possible amount to avoid numeric precision related problems.

• isEmpty

  public final boolean isEmpty()

  Returns true when the box has just been initialized, and is still empty. This method might also return true if the state of the box becomes inconsistent and some component of the minimum corner is larger than the corresponding coordinate of the maximum corner.

  Returns:

  true if the box is empty, false otherwise

• intersects

  public final boolean intersects​(BoundingBox b)

  Returns true if the specified bounding box intersects this one. The boxes are treated as volumes, so a box inside another will return true. Returns false if the parameter is null.

  Parameters:

  b - box to be tested for intersection

  Returns:

  true if the boxes overlap, false otherwise

• contains

  public final boolean contains​(Point3 p)

  Checks to see if the specified pointis inside the volume defined by this box. Returns false if the parameter is null.

  Parameters:

  p - point to be tested for containment

  Returns:

  true if the point is inside the box, false otherwise

• contains

  public final boolean contains​(float x,
                                float y,
                                float z)

  Check to see if the specified point is inside the volume defined by this box.

  Parameters:

  x - x coordinate of the point to be tested

  y - y coordinate of the point to be tested

  z - z coordinate of the point to be tested

  Returns:

  true if the point is inside the box, false otherwise

• include

  public final void include​(Point3 p)

  Changes the extents of the box as needed to include the given pointinto this box. Does nothing if the parameter is null.

  Parameters:

  p - point to be included

• include

  public final void include​(float x,
                            float y,
                            float z)

  Changes the extents of the box as needed to include the given point into this box.

  Parameters:

  x - x coordinate of the point

  y - y coordinate of the point

  z - z coordinate of the point

• include

  public final void include​(BoundingBox b)

  Changes the extents of the box as needed to include the given box into this box. Does nothing if the parameter is null.

  Parameters:

  b - box to be included

• toString

  public final java.lang.String toString()

  Overrides:

  toString in class java.lang.Object