Android Open Source - Schooner-3D I P O

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License

The source code is released under:

Apache License

Java Source Code

/*
 * Copyright 2012 Dan Mercer/*from  ww w  .j a  va2 s .co m*/
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.supermercerbros.gameengine.util;


/**
 * Contains interpolation utilities. (IPO is shorthand for interpolation.)
 * 
 * @version 1.0
 */
public class IPO {
  @SuppressWarnings("unused")
  private static final String TAG = "com.supermercerbros.gameengine.util.IPO";

  /**
   * Interpolates to the given point between two mesh keyframes.
   * 
   * @param frame
   *            The float array that holds the interpolated frame.
   * @param startKeyframe
   *            The float array that holds the first keyframe.
   * @param endKeyframe
   *            The float array that holds the second keyframe.
   * @param framePoint
   *            The point to be interpolated to. For example, 0.5f would
   *            result in the halfway-point between the two keyframes.
   * 
   * @throws IllegalArgumentException
   *             if <code>frame</code>, <code>startKeyframe</code>, and
   *             <code>endKeyframe</code> are not equal lengths.
   * @throws NullPointerException
   *             if <code>frame</code>, <code>startKeyframe</code>, or
   *             <code>endKeyframe</code> is null.
   */
  public static void mesh(float[] frame, float[] startKeyframe,
      float[] endKeyframe, double framePoint) {
    
    int size = frame.length;
    
    if (frame == null || startKeyframe == null || endKeyframe == null)
      throw new NullPointerException();
    if (size != startKeyframe.length && size != endKeyframe.length)
      throw new IllegalArgumentException();

    for (int i = 0; i < size; i++) {
      frame[i] = (float) (startKeyframe[i]
          + ((endKeyframe[i] - startKeyframe[i]) * framePoint));
    }
  }

}

Java Source Code List

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