cz.cuni.jagrlib
Class CSGNode

java.lang.Object
  cz.cuni.jagrlib.DefaultSceneNode
      cz.cuni.jagrlib.CSGCommonNode
          cz.cuni.jagrlib.CSGNode

All Implemented Interfaces:

IntersectionAttributes, SceneNode

public class CSGNode
extends CSGCommonNode

Inner node of CSG scene representation.

Since:

0.11

See Also:

CSGNode.java, CSGLeaf

Nested Class Summary

protected static class

CSGNode.Child

Field Summary

protected java.util.ArrayList<CSGNode.Child>	ch Array of child-references.
int	op Set operation code.

Fields inherited from class cz.cuni.jagrlib.CSGCommonNode

attr, order, parent, root

Fields inherited from class cz.cuni.jagrlib.DefaultSceneNode

serial

Fields inherited from interface cz.cuni.jagrlib.SceneNode

ATTR_BSSRDF, ATTR_COLOR, ATTR_TEXTURE

Constructor Summary

CSGNode(int _op)
Initializing constructor.

Method Summary

SceneNode	getChild(int i) Returns the given child node.
TrMatrix	getChildMatrix(int i) Returns transformation matrix for the given child node.
TrMatrix	getChildMatrixInv(int i) Returns inverse transformation matrix for the given child node.
int	children() Returns number of child nodes.
int	insertChild(SceneNode child, TrMatrix m, TrMatrix mInv) Inserts a new child node.
java.util.List<MicroFacet>	intersection(double[] P0, double[] P1) Computes all intersections of the given ray with sub-scene surface.
protected java.util.List<MicroFacet>	intersection(double[] P0, double[] P1, int i) Computes all intersections of the given ray with one child scene.
int	removeChild(int i) Removes the given child node.

Methods inherited from class cz.cuni.jagrlib.CSGCommonNode

assertAttributes, getAttribute, getAttributes, getOrder, getParent, isObjectRoot, selfAttribute, setAttribute, setObjectRoot, setOrder, setParent

Methods inherited from class cz.cuni.jagrlib.DefaultSceneNode

getSerial, setSerial

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

op

public int op

Set operation code.

See Also:

BinaryOperation

ch

protected java.util.ArrayList<CSGNode.Child> ch

Array of child-references.

Constructor Detail

CSGNode

public CSGNode(int _op)

Initializing constructor.

Method Detail

children

public final int children()

Returns number of child nodes.

Specified by:

children in interface SceneNode

Overrides:

children in class DefaultSceneNode

Returns:

Number of child nodes (0 for leaf node).

See Also:

getChild(int), getChildMatrix(int), getChildMatrixInv(int)

getChild

public SceneNode getChild(int i)

Returns the given child node.

Specified by:

getChild in interface SceneNode

Overrides:

getChild in class DefaultSceneNode

Parameters:

i - Order of the requested node (from 0 to children()-1).

Returns:

The requested node or null.

See Also:

children(), getChildMatrix(int), getChildMatrixInv(int)

getChildMatrix

public TrMatrix getChildMatrix(int i)

Returns transformation matrix for the given child node.

Specified by:

getChildMatrix in interface SceneNode

Overrides:

getChildMatrix in class DefaultSceneNode

Parameters:

i - Order of the child node.

Returns:

Transformation matrix from the child's coordinate system to this node's one. null stands for identity.

See Also:

children(), getChild(int), getChildMatrixInv(int)

getChildMatrixInv

public TrMatrix getChildMatrixInv(int i)

Returns inverse transformation matrix for the given child node.

Specified by:

getChildMatrixInv in interface SceneNode

Overrides:

getChildMatrixInv in class DefaultSceneNode

Parameters:

i - Order of the child node.

Returns:

Transformation matrix from this node's coordinate system to child's one. null stands for identity.

See Also:

children(), getChild(int), getChildMatrix(int)

insertChild

public int insertChild(SceneNode child,
                       TrMatrix m,
                       TrMatrix mInv)

Inserts a new child node.

Specified by:

insertChild in interface SceneNode

Overrides:

insertChild in class DefaultSceneNode

Parameters:

child - The new child node.

m - Transformation matrix for the new child node (transformation from child's coordinate system to this node's one). Can be null, even for non-trivial mInv.

mInv - Inverse transformation matrix for the new child node (transformation from this node's coordinate system to child's one). Can be null, even for non-trivial m.

Returns:

Order of the inserted child node (or -1 in case of failure).

See Also:

removeChild(int), children()

removeChild

public int removeChild(int i)

Removes the given child node.

Specified by:

removeChild in interface SceneNode

Overrides:

removeChild in class DefaultSceneNode

Parameters:

i - Order of the child node to be removed.

Returns:

Number of child nodes after the remove-operation.

See Also:

insertChild(cz.cuni.jagrlib.SceneNode, cz.cuni.jagrlib.TrMatrix, cz.cuni.jagrlib.TrMatrix), children()

intersection

protected java.util.List<MicroFacet> intersection(double[] P0,
                                                  double[] P1,
                                                  int i)

Computes all intersections of the given ray with one child scene. W/o any checks.

Parameters:

P0 - Ray origin (double[3]).

P1 - Direction vector of the ray (double[3]).

i - Order of the child node.

Returns:

List of all intersections with the given child-scene.

intersection

public java.util.List<MicroFacet> intersection(double[] P0,
                                               double[] P1)

Computes all intersections of the given ray with sub-scene surface.

Specified by:

intersection in interface SceneNode

Overrides:

intersection in class DefaultSceneNode

Parameters:

P0 - Ray origin (double[3] or double[4]).

P1 - Direction vector of the ray (double[3] or double[4]).

Returns:

List of all intersections with the sub-scene.