barsuift.simLife.tree
Class TreeStateFactory

java.lang.Object
  barsuift.simLife.tree.TreeStateFactory

public class TreeStateFactory
extends java.lang.Object

Field Summary

static float	HEIGHT_BRANCH_RADIAL_LENGTH_RATIO Ratio between the length of branches compared to the tree height
static int	HEIGHT_RADIUS_RATIO

Constructor Summary

TreeStateFactory()

Method Summary

protected javax.vecmath.Point3d	computeBranchEndPoint(double treeHeight, boolean goingToPositiveX, boolean goingToPositiveZ) Compute the branch end point.
protected javax.vecmath.Vector3d	computeBranchTranslationVector(float treeRadius, float treeHeight) Compute the branch translation vector.
protected TreeBranchState	computeRandomBranchState(float treeRadius, float treeHeight)
TreeState	createRandomTreeState(javax.vecmath.Point3d translationVector, int nbBranches, float height)

Methods inherited from class java.lang.Object

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

Field Detail

HEIGHT_RADIUS_RATIO

public static final int HEIGHT_RADIUS_RATIO

See Also:

Constant Field Values

HEIGHT_BRANCH_RADIAL_LENGTH_RATIO

public static final float HEIGHT_BRANCH_RADIAL_LENGTH_RATIO

Ratio between the length of branches compared to the tree height

See Also:

Constant Field Values

Constructor Detail

TreeStateFactory

public TreeStateFactory()

Method Detail

createRandomTreeState

public TreeState createRandomTreeState(javax.vecmath.Point3d translationVector,
                                       int nbBranches,
                                       float height)

computeRandomBranchState

protected TreeBranchState computeRandomBranchState(float treeRadius,
                                                   float treeHeight)

computeBranchTranslationVector

protected javax.vecmath.Vector3d computeBranchTranslationVector(float treeRadius,
                                                                float treeHeight)

Compute the branch translation vector.

• x=[-1;1] * treeRadius
• y=treeHeight
• z=[-1;1] * treeRadius * sin(acos(x))

Parameters:

treeRadius - the tree radius

treeHeight - the tree height

Returns:

the computed translation vector

computeBranchEndPoint

protected javax.vecmath.Point3d computeBranchEndPoint(double treeHeight,
                                                      boolean goingToPositiveX,
                                                      boolean goingToPositiveZ)

Compute the branch end point.

The end pôint is computed as follows :

• x=[0-1] * HEIGHT_BRANCH_RADIAL_LENGTH_RATIO * treeHeight
• y=[0-1] * treeHeight
• z=[0-1] * HEIGHT_BRANCH_RADIAL_LENGTH_RATIO * treeHeight

Parameters:

treeHeight - the tree height

goingToPositiveX - true of the x should be positive, false otherwise

goingToPositiveZ - true of the z should be positive, false otherwise

Returns:

the computed branch end point