Example usage for org.apache.commons.math.geometry Vector3D negate

Introduction

In this page you can find the example usage for org.apache.commons.math.geometry Vector3D negate.

Prototype

public Vector3D negate() 

Source Link

Document

Get the opposite of the instance.

Usage

From source file:org.orekit.frames.LocalOrbitalFrame.java

/** {@inheritDoc} */
protected void updateFrame(final AbsoluteDate date) throws OrekitException {

    // get position/velocity with respect to parent frame
    final PVCoordinates pv = provider.getPVCoordinates(date, getParent());
    final Vector3D p = pv.getPosition();
    final Vector3D v = pv.getVelocity();
    final Vector3D momentum = pv.getMomentum();

    // compute the translation part of the transform
    final Transform translation = new Transform(p.negate(), v.negate());

    // compute the rotation part of the transform
    final Rotation r = new Rotation((type == LOFType.TNW) ? v : p, momentum, Vector3D.PLUS_I, Vector3D.PLUS_K);
    final Transform rotation = new Transform(r, new Vector3D(1.0 / p.getNormSq(), r.applyTo(momentum)));

    // update the frame defining transform
    setTransform(new Transform(translation, rotation));

}

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