org.biojava.nbio.structure.symmetry.geometry

Class SphereSampler

java.lang.Object

org.biojava.nbio.structure.symmetry.geometry.SphereSampler

public final class SphereSampler
extends Object

Sample possible orientations. An orientation can be represented as a quaternion or as a rotation axis and angle. The orientations are somewhat evenly distributed over orientation space, but the current implementation is not suited for statistically uniform sampling.

Author:

Peter

Method Summary

Modifier and Type	Method and Description
static void	getAxisAngle(int index, javax.vecmath.AxisAngle4d axisAngle)
static void	getAxisAngle(int index, javax.vecmath.AxisAngle4f axisAngle)
static javax.vecmath.Quat4d	getQuat4d(int index)
static int	getSphereCount()

Methods inherited from class java.lang.Object

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

Method Detail

getSphereCount

public static int getSphereCount()

getQuat4d

public static javax.vecmath.Quat4d getQuat4d(int index)

getAxisAngle

public static void getAxisAngle(int index,
                                javax.vecmath.AxisAngle4f axisAngle)

getAxisAngle

public static void getAxisAngle(int index,
                                javax.vecmath.AxisAngle4d axisAngle)

Parameters:

index - Index between 0 and getSphereCount()-1

axisAngle - (Output) modified to contain the index-th sampled orientation