org.biojava.nbio.structure.geometry

Class CalcPoint

java.lang.Object

org.biojava.nbio.structure.geometry.CalcPoint

public class CalcPoint
extends Object

Utility operations on Point3d.

Since:

5.0.0

Author:

Aleix Lafita

Method Summary

Modifier and Type	Method and Description
static void	center(javax.vecmath.Point3d[] x) Center a cloud of points.
static javax.vecmath.Point3d	centroid(javax.vecmath.Point3d[] x) Calculate the centroid of the point cloud.
static javax.vecmath.Point3d[]	clonePoint3dArray(javax.vecmath.Point3d[] x) Clone an array of points.
static Matrix	formMatrix(javax.vecmath.Point3d[] a, javax.vecmath.Point3d[] b) Peter can you document this method? TODO
static void	transform(javax.vecmath.Matrix4d rotTrans, javax.vecmath.Point3d[] x) Transform all points with a 4x4 transformation matrix.
static void	translate(javax.vecmath.Point3d trans, javax.vecmath.Point3d[] x) Translate all points with a translation vector.

Methods inherited from class java.lang.Object

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

Method Detail

center

public static void center(javax.vecmath.Point3d[] x)

Center a cloud of points. This means subtracting the of the cloud to each point.

Parameters:

x - array of points. Point objects will be modified

centroid

public static javax.vecmath.Point3d centroid(javax.vecmath.Point3d[] x)

Calculate the centroid of the point cloud.

Parameters:

x - array of points. Point objects will not be modified

Returns:

centroid as Point3d

transform

public static void transform(javax.vecmath.Matrix4d rotTrans,
                             javax.vecmath.Point3d[] x)

Transform all points with a 4x4 transformation matrix.

Parameters:

rotTrans - 4x4 transformation matrix

array - of points. Point objects will be modified

translate

public static void translate(javax.vecmath.Point3d trans,
                             javax.vecmath.Point3d[] x)

Translate all points with a translation vector.

Parameters:

rotTrans - 4x4 transformation matrix

array - of points. Point objects will be modified

clonePoint3dArray

public static javax.vecmath.Point3d[] clonePoint3dArray(javax.vecmath.Point3d[] x)

Clone an array of points.

Parameters:

x - original array of points. Point objects will not be modified

Returns:

new array of points, identical clone of x

formMatrix

public static Matrix formMatrix(javax.vecmath.Point3d[] a,
                                javax.vecmath.Point3d[] b)

Peter can you document this method? TODO

Parameters:

a -

b -

Returns: