git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@7818 75d07b2b-3a1a-0410-a2c5-0572b91ccdca3.0
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package com.jme3.terrain.heightmap; |
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import java.io.IOException; |
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import com.jme3.export.InputCapsule; |
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import com.jme3.export.JmeExporter; |
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import com.jme3.export.JmeImporter; |
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import com.jme3.export.OutputCapsule; |
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import com.jme3.export.Savable; |
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import com.jme3.math.FastMath; |
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/** |
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* <code>RawArrayHeightMap</code> creates a height map directly from a float |
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* Array. |
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* |
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* @author OzoneGrif |
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* @version $Id$ |
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*/ |
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public class RawArrayHeightMap extends AbstractHeightMap implements Savable |
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{ |
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/** |
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* Empty constructor, used by the <code>Savable</code> implementation. |
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* Do not use manually. |
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*/ |
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public RawArrayHeightMap() |
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{ |
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} |
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/** |
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* Creates an empty heightMap |
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* |
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* @param size |
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*/ |
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public RawArrayHeightMap( int size ) |
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{ |
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this.size = size; |
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heightData = new float[ size * size ]; |
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} |
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/** |
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* Creates a heightMap from a pre-existing float Array |
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*/ |
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public RawArrayHeightMap( float[] buffer ) throws Exception |
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{ |
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size = (int) FastMath.sqr( buffer.length ); |
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if ( (size * size) == buffer.length ) |
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heightData = buffer; |
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else |
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throw new Exception( "buffer size must be 2^n" ); |
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} |
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/** |
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* Not needed for <code>RawArrayHeightMap</code>, will return false if not |
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* initialized |
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*/ |
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@Override |
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public boolean load() |
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{ |
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return ((size > 0) && (heightData != null)); |
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} |
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/** |
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* Checks if both heightMaps are strictly identical |
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*/ |
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@Override |
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public boolean equals( Object o ) |
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{ |
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if ( o instanceof AbstractHeightMap ) |
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{ |
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RawArrayHeightMap rhm = (RawArrayHeightMap) o; |
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if ( (size == rhm.size) && (heightScale == rhm.heightScale) && (filter == rhm.filter) ) |
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{ |
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for ( int i = 0 ; i < heightData.length ; i++ ) |
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if ( heightData[ i ] != rhm.heightData[ i ] ) |
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return false; |
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return true; |
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} else |
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return false; |
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} else |
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return false; |
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} |
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/** |
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* Returns an unique hashCode strictly linked to this heightMap's data |
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*/ |
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@Override |
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public int hashCode() |
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{ |
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int hashCode = (size ^ Float.floatToIntBits( heightScale ) ^ Float.floatToIntBits( filter )); |
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for ( float element : heightData ) |
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hashCode ^= Float.floatToIntBits( element ); |
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return hashCode; |
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} |
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/** |
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* Save the heightMap for a BinaryExporter |
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* |
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* @param out |
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* @throws IOException |
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*/ |
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@Override |
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public void write( JmeExporter ex ) throws IOException |
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{ |
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OutputCapsule oc = ex.getCapsule( this ); |
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oc.write( size, "size", 0 ); |
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oc.write( heightScale, "heightScale", 1.0f ); |
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oc.write( filter, "filter", 0.5f ); |
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oc.write( heightData, "heightData", null ); |
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} |
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/** |
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* Load the heightMap for a BinaryImporter |
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* |
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* @param in |
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* @throws IOException |
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* @throws ClassNotFoundException |
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*/ |
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@Override |
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public void read( JmeImporter im ) throws IOException |
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{ |
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InputCapsule ic = im.getCapsule( this ); |
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size = ic.readInt( "size", 0 ); |
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heightScale = ic.readFloat( "heightScale", 1.0f ); |
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filter = ic.readFloat( "filter", 0.5f ); |
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heightData = ic.readFloatArray( "heightData", null ); |
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} |
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} |
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