NativeAnimationTween.java

package com.drawbridge.dm.animation;

import com.drawbridge.utils.Utils;

public class NativeAnimationTween
{

	public final long					mTimeLength;
	public final NativeAnimationItem[]	mFrames;
	private boolean						isAllowedToTween	= true;

	public NativeAnimationTween(NativeAnimationItem[] frames, double timeDelay) {
		mFrames = frames;
		mTimeLength = (long) (timeDelay * 1000);
	}

	public void stopTween()
	{
		isAllowedToTween = false;
	}

	public Thread getTween()
	{

		Thread result = new Thread(new Runnable() {

			@Override
			public void run()
			{
				Utils.out.println(this.getClass(),"NAT started with " + mFrames.length + " frames");
				long timeDelayInMilli = 10;
				long timeLength = mTimeLength;
				int expectedRuns = Utils.safeLongToInt((mTimeLength / timeDelayInMilli));

				// Utils.out.println(this.getClass(),"Expected Runs:" + expectedRuns);
				double[] xDiffs = new double[mFrames.length];
				double[] yDiffs = new double[mFrames.length];
				double[] wDiffs = new double[mFrames.length];
				double[] hDiffs = new double[mFrames.length];
				double[] currentX = new double[mFrames.length];
				double[] currentY = new double[mFrames.length];
				double[] currentW = new double[mFrames.length];
				double[] currentH = new double[mFrames.length];

				for (int i = 0; i < mFrames.length; i++)
				{
					if (mFrames[i].x != null)
						xDiffs[i] = mFrames[i].x - mFrames[i].mObject.getX();
					else
						xDiffs[i] = 0;

					if (mFrames[i].y != null)
						yDiffs[i] = mFrames[i].y - mFrames[i].mObject.getY();
					else
						yDiffs[i] = 0;

					if (mFrames[i].w != null)
						wDiffs[i] = mFrames[i].w - mFrames[i].mObject.getWidth();
					else
						wDiffs[i] = 0;

					if (mFrames[i].h != null)
						hDiffs[i] = mFrames[i].h - mFrames[i].mObject.getHeight();
					else
						hDiffs[i] = 0;

					currentY[i] = mFrames[i].mObject.getLocation().y;
					currentX[i] = mFrames[i].mObject.getLocation().x;
					currentW[i] = mFrames[i].mObject.getSize().width;
					currentH[i] = mFrames[i].mObject.getSize().height;
				}
				while (timeLength >= 0 && isAllowedToTween)
				{

					for (int i = 0; i < mFrames.length; i++)
					{
						// Change Location
						double xAdd = (xDiffs[i] != 0.0 && expectedRuns != 0) ? xDiffs[i] / expectedRuns : 0;
						double yAdd = (yDiffs[i] != 0.0 && expectedRuns != 0) ? yDiffs[i] / expectedRuns : 0;

						currentX[i] += xAdd;
						currentY[i] += yAdd;
						if(xAdd != 0.0 || yAdd != 0.0)
							mFrames[i].mObject.setLocation((int) currentX[i], (int) currentY[i]);

						// Change Size
						double wAdd = (wDiffs[i] != 0.0 && expectedRuns != 0) ? wDiffs[i] / expectedRuns : 0;
						double hAdd = (hDiffs[i] != 0.0 && expectedRuns != 0) ? hDiffs[i] / expectedRuns : 0;
						
						currentW[i] += wAdd;
						currentH[i] += hAdd;
						if(wAdd != 0.0 || hAdd != 0.0)
							mFrames[i].mObject.setSize((int) currentW[i], (int) currentH[i]);

					}

					// Wait for the time delay
					timeLength -= timeDelayInMilli;
					try
					{
						Thread.sleep(timeDelayInMilli);
					} catch (InterruptedException e)
					{
						e.printStackTrace();
					}
				}

			}
		});
		return result;

	}

}