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/*
 * Copyright (c) 2010, 2014, Oracle and/or its affiliates.
 * All rights reserved. Use is subject to license terms.
 *
 * This file is available and licensed under the following license:
 *
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 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  - Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  - Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the distribution.
 *  - Neither the name of Oracle Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 */

package org.fxyz3d.utils.geom;

import javafx.scene.Group;
import javafx.scene.transform.Rotate;
import javafx.scene.transform.Scale;
import javafx.scene.transform.Translate;

/**
 * Joint -  A Joint is equivalent to a Maya Joint Node
 * 
 * If you are post-multiplying matrices, To transform a point p from object-space to world-space you would need to
 * post-multiply by the worldMatrix. (p' = p * wm) matrix = [S][SO][R][JO][IS][T] where R = [RX][RY][RZ]  (Note: order
 * is determined by rotateOrder)
 * 
 * If you are pre-multiplying matrices, to transform a point p from object-space to world-space you would need to
 * pre-multiply by the worldMatrix. (p' = wm * p) matrix = [T][IS][JO][R][SO][S] where R = [RZ][RY][RX]  (Note: order is
 * determined by rotateOrder) Of these sub-matrices we can set [SO] to identity, so matrix = [T][IS][JO][R][S]
 */
public class Joint extends Group {
    public final Translate t = new Translate();

    public final Rotate jox = new Rotate();

    { jox.setAxis(Rotate.X_AXIS); }

    public final Rotate joy = new Rotate();

    { joy.setAxis(Rotate.Y_AXIS); }

    public final Rotate joz = new Rotate();

    { joz.setAxis(Rotate.Z_AXIS); }

    public final Rotate rx = new Rotate();

    { rx.setAxis(Rotate.X_AXIS); }

    public final Rotate ry = new Rotate();

    { ry.setAxis(Rotate.Y_AXIS); }

    public final Rotate rz = new Rotate();

    { rz.setAxis(Rotate.Z_AXIS); }

    public final Scale s = new Scale();
    public final Scale is = new Scale();
    // should bind "is" to be in the inverse of the parent's "s"

    public Joint() {
        super();
        getTransforms().addAll(t, is, joz, joy, jox, rz, ry, rx, s);
    }
}