//
// ShapeControl.java
//

/*
VisAD system for interactive analysis and visualization of numerical
data.  Copyright (C) 1996 - 2017 Bill Hibbard, Curtis Rueden, Tom
Rink, Dave Glowacki, Steve Emmerson, Tom Whittaker, Don Murray, and
Tommy Jasmin.

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA
*/

package visad;

import java.rmi.*;

import visad.util.Util;

/**
   ShapeControl is the VisAD class for controlling Shape display scalars.

*/
public class ShapeControl extends Control {

  private SimpleSet shapeSet = null;
  private VisADGeometryArray[] shapes = null;

  // WLH 31 May 2000
  private float scale = 1.0f;

  // WLH 6 Aug 2001
  private boolean autoScale = false;
  private ProjectionControlListener pcl = null;

  public ShapeControl(DisplayImpl d) {
    super(d);
  }

  /**
   * Sets the SimpleSet that defines the mapping from RealType values to indices
   * into an array of shapes.  This method must be called before the
   * setShapes() method to avoid a subsequent NullPointerException in the
   * running of the display.
   *
   * @param set			1-D set of values that defines the mapping from
   *				RealType values to indices into the array of
   *				shapes.  The domain dimension shall be 1.
   */
  public synchronized void setShapeSet(SimpleSet set)
         throws VisADException, RemoteException {
    if (set == null) {
      shapeSet = null;
      shapes = null;
      return;
    }
    if (set.getDimension() != 1) {
      throw new DisplayException("ShapeControl.setShapeSet: domain " +
                                 "dimension must be 1");
    }
    shapeSet = set;
    shapes = new VisADGeometryArray[shapeSet.getLength()];
    changeControl(true);
  }

  /** set the shape associated with index;
      the VisADGeometryArray class hierarchy defines various
      kinds of shapes */
  public synchronized void setShape(int index, VisADGeometryArray shape)
         throws VisADException, RemoteException {
    if (shapes == null) return;
    if (0 <= index && index < shapes.length) {
      shapes[index] = shape;
    }
    changeControl(true);
  }

  /**
   * Sets the array of shapes.  The array is accessed by index determined from
   * the value-to-index mapping established by the setShapeSet()
   * method.  The VisADGeometryArray class hierarchy defines various kinds of
   * shapes.  This method must be called after the setShapeSet()
   * method to avoid a subsequent NullPointerException in the running of the
   * display.
   *
   * @param shs			The array of shapes.
   */
  public synchronized void setShapes(VisADGeometryArray[] shs)
         throws VisADException, RemoteException {
    if (shapeSet == null) return;
    if (shs != null && shs.length > 0) {
      final int len = Math.min(shs.length, shapes.length);
      for (int i=0; i shs.length) {
        for (int i=shs.length; i < shapes.length; i++) {
          shapes[i] = null;
        }
      }
    }
    changeControl(true);
  }

  public synchronized VisADGeometryArray[] getShapes(float[] values)
         throws VisADException {
    if (values == null || values.length < 1) return null;
    VisADGeometryArray[] sh = new VisADGeometryArray[values.length];
    if (shapeSet == null) return sh;
    float[][] set_values = new float[1][];
    set_values[0] = values;
    int[] indices = null;
    if (shapeSet.getLength() < 2) {
      indices = new int[values.length];
      for (int i=0; i