nl.knowledgeplaza.math.geometry
Class GeometryUtil

java.lang.Object
  nl.knowledgeplaza.math.geometry.GeometryUtil

public class GeometryUtil
extends Object

This class used Apache common math

Author:

User

Constructor Summary

GeometryUtil()

Method Summary

static org.apache.commons.math.geometry.Vector3D

projectOntoXYPlane(org.apache.commons.math.geometry.Vector3D point, org.apache.commons.math.geometry.Vector3D eye, double z) Create a projection of a 3D point onto a XY plane (specified by the z coordinate) as seen from an eye point.

Methods inherited from class java.lang.Object

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

Constructor Detail

GeometryUtil

public GeometryUtil()

Method Detail

projectOntoXYPlane

public static org.apache.commons.math.geometry.Vector3D projectOntoXYPlane(org.apache.commons.math.geometry.Vector3D point,
                                                                           org.apache.commons.math.geometry.Vector3D eye,
                                                                           double z)

Create a projection of a 3D point onto a XY plane (specified by the z coordinate) as seen from an eye point. For example: // calculate rotation Vector3D lPoint = new Vector3D(1000, 1500, 0); Rotation lRotation = new Rotation(Vector3D.PLUS_J, Math.toRadians(50.0)); // rotate around the y-axis (0,1,0) // 3D to 2D viewport projection Vector3D lEyePoint = new Vector3D(0, 750, 6000); Vector3D lPointProjectedOnViewport = GeometryUtil.projectOntoXYPlane(lPoint, lEyePoint, 0); // XY plane is on z=0

Parameters:

point -

eye -

z -

Returns: