Package com.openinventor.inventor
Class SbBox3f
- java.lang.Object
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- com.openinventor.inventor.SbBasic
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- com.openinventor.inventor.SbBox3f
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- Direct Known Subclasses:
SbXfBox3f
public class SbBox3f extends SbBasic
3D box class. 3D box which has planes parallel to the major axes and is specified by two points on a diagonal. This class is part of the standard Open Inventor datatype classes and is used as input and output to geometry operations (seeSoGetBoundingBoxAction
).
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Field Summary
Fields Modifier and Type Field Description float[]
array
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Constructor Summary
Constructors Constructor Description SbBox3f()
Constructor for a 3D float box.SbBox3f(float[] components)
SbBox3f(float xmin, float ymin, float zmin, float xmax, float ymax, float zmax)
Constructor for a 3D float box.SbBox3f(SbBox3f copyFrom)
SbBox3f(SbVec3f _min, SbVec3f _max)
Constructor for a 3D float box.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description float
computeMaxDistance2(SbVec3f p)
Returns the squared maximum distance between a point and the 8 bounding box's vertices.boolean
contains(SbBox3f bb)
Returns true if the specified box is fully contained inside this box.boolean
equals(java.lang.Object obj)
void
extendBy(SbBox3f bb)
Extends this box (if necessary) to contain the specified box.void
extendBy(SbVec3f pt)
Extends this box (if necessary) to contain the specified point.float[]
getBounds()
Gets the corners of the box.SbVec3f
getCenter()
Returns the center of the box.SbVec3f
getClosestPoint(SbVec3f point)
Returns the closest point on the box to the given point.SbVec3f
getMax()
Returns the maximum point of the box.SbVec3f
getMin()
Returns the minimum point of the box.SbVec3f[]
getMinMax()
Gets the corners of the box.float[]
getOrigin()
Gets box origin which is the same as the minimum corner of the box.SbVec3f
getSize()
Gets box size.float[]
getSpan(SbVec3f direction)
Finds the span of a box along a specified direction.float[]
getValue()
float
getVolume()
Returns the volume of the box.boolean
hasVolume()
Returns true if all three dimensions of the box have positive size, and false otherwise.boolean
intersect(SbBox3f bb)
Returns true if the specified box intersects this box.boolean
intersect(SbVec3f pt)
Returns true if the specified point intersects this box.SbBox3f
intersection(SbBox3f box)
Returns the intersection of the specified box with this box.boolean
isEmpty()
Returns true if the box is empty, and false otherwise.void
makeEmpty()
Makes an empty box.int
outside(SbMatrix MVP)
Returns true if bounding box is completely outside the view-volume defined by the model+view+projection matrix given.void
setBounds(float xmin, float ymin, float zmin, float xmax, float ymax, float zmax)
Sets the corners of the box.void
setBounds(SbVec3f _min, SbVec3f _max)
Sets the corners of the box.SbBox3f
setValue(float[] components)
SbBox3f
setValue(float[] components, int startIndex)
void
setValue(SbBox3f copyFrom)
static SbBox3f[]
toArray(long nativeArray, long length)
void
transform(SbMatrix m)
Transforms box by matrix, enlarging box to contain result.boolean
triangleBoxOverlap(SbVec3f u0, SbVec3f u1, SbVec3f u2)
Return true if the given triangle intersects the bounding box.
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Constructor Detail
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SbBox3f
public SbBox3f(SbBox3f copyFrom)
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SbBox3f
public SbBox3f(float[] components)
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SbBox3f
public SbBox3f(float xmin, float ymin, float zmin, float xmax, float ymax, float zmax)
Constructor for a 3D float box. xmin , ymin , zmin , xmax , ymax and zmax are the bounds of the box.
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SbBox3f
public SbBox3f()
Constructor for a 3D float box. The box is initially empty.
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Method Detail
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setValue
public SbBox3f setValue(float[] components, int startIndex)
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setValue
public SbBox3f setValue(float[] components)
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getValue
public float[] getValue()
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setValue
public void setValue(SbBox3f copyFrom)
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computeMaxDistance2
public float computeMaxDistance2(SbVec3f p)
Returns the squared maximum distance between a point and the 8 bounding box's vertices.
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transform
public void transform(SbMatrix m)
Transforms box by matrix, enlarging box to contain result.
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extendBy
public void extendBy(SbBox3f bb)
Extends this box (if necessary) to contain the specified box.
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getVolume
public float getVolume()
Returns the volume of the box.
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triangleBoxOverlap
public boolean triangleBoxOverlap(SbVec3f u0, SbVec3f u1, SbVec3f u2)
Return true if the given triangle intersects the bounding box. Note that intersection considers the whole box, not just the border. Therefore a triangle completely inside the box will return true.
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toArray
public static SbBox3f[] toArray(long nativeArray, long length)
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equals
public boolean equals(java.lang.Object obj)
- Overrides:
equals
in classjava.lang.Object
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getSpan
public float[] getSpan(SbVec3f direction)
Finds the span of a box along a specified direction. The span is the total distance the box occupies along a given direction. The total distance is returned in the form of a minimum and maximum distance from the origin of each of the corners of the box along the given direction. The difference between these two values is the span.
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outside
public int outside(SbMatrix MVP)
Returns true if bounding box is completely outside the view-volume defined by the model+view+projection matrix given. "cullBits" keeps track of which view-volume clipping planes the box is completely inside of; if a 'parent' bounding box of this bounding box was found to be completely inside the left/right clipping planes, the low bit of cullBits will be set to zero, and this routine will not test this box against those planes. When cullBits is zero, it is a waste of time to call this function! Before calling this the first time, set cullBits to 7 (SoGLRenderAction
andSoSeparator
will handle this automatically for render culling).
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getMax
public SbVec3f getMax()
Returns the maximum point of the box. The maximum point is the corner of the box with the highest X, Y, and Z values.
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setBounds
public void setBounds(float xmin, float ymin, float zmin, float xmax, float ymax, float zmax)
Sets the corners of the box.
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getMin
public SbVec3f getMin()
Returns the minimum point of the box. The minimum point is the corner of the box with the lowest X, Y, and Z values.
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contains
public boolean contains(SbBox3f bb)
Returns true if the specified box is fully contained inside this box.
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intersect
public boolean intersect(SbVec3f pt)
Returns true if the specified point intersects this box.
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extendBy
public void extendBy(SbVec3f pt)
Extends this box (if necessary) to contain the specified point.
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intersect
public boolean intersect(SbBox3f bb)
Returns true if the specified box intersects this box.
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intersection
public SbBox3f intersection(SbBox3f box)
Returns the intersection of the specified box with this box. Returned box is empty if there is no intersection.
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getCenter
public SbVec3f getCenter()
Returns the center of the box.
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makeEmpty
public void makeEmpty()
Makes an empty box.
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isEmpty
public boolean isEmpty()
Returns true if the box is empty, and false otherwise. Note: Setting the box to all zeros does not make it "empty". Use themakeEmpty()
method. (This method only returns true if the maximum X value is less than the minimum X value.)
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hasVolume
public boolean hasVolume()
Returns true if all three dimensions of the box have positive size, and false otherwise.
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getSize
public SbVec3f getSize()
Gets box size.
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getMinMax
public SbVec3f[] getMinMax()
Gets the corners of the box.
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getBounds
public float[] getBounds()
Gets the corners of the box.
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getClosestPoint
public SbVec3f getClosestPoint(SbVec3f point)
Returns the closest point on the box to the given point. (Returns the point on the center of the Z face if passed the center.)
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getOrigin
public float[] getOrigin()
Gets box origin which is the same as the minimum corner of the box.
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