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@@ -0,0 +1,141 @@
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+/**
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+ * @author daron1337 / http://daron1337.github.io/
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+ */
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+
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+THREE.Lut = function ( colormap, numberofcolors ) {
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+
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+ this.lut = new Array();
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+ this.map = THREE.ColorMapKeywords[ colormap ];
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+ this.n = numberofcolors;
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+
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+ var step = 1. / this.n;
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+
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+ for ( var i = 0; i <= 1; i+=step ) {
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+
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+ for ( var j = 0; j < this.map.length - 1; j++ ) {
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+
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+ if ( i >= this.map[ j ][ 0 ] && i < this.map[ j+1 ][ 0 ] ) {
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+
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+ var min = this.map[ j ][ 0 ];
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+ var max = this.map[ j+1 ][ 0 ];
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+ var color = new THREE.Color( 0xffffff );
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+ var minColor = new THREE.Color( 0xffffff ).setHex( this.map[ j ][ 1 ] );
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+ var maxColor = new THREE.Color( 0xffffff ).setHex( this.map[ j+1 ][ 1 ] );
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+
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+ color = minColor.lerp( maxColor, ( i - min ) / ( max - min ) );
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+
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+ this.lut.push(color);
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+
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+ }
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+
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+ }
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+
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+ }
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+
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+ return this.set( this );
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+
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+};
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+
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+THREE.Lut.prototype = {
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+
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+ constructor: THREE.Lut,
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+
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+ lut: [], map: [], mapname: 'rainbow' , n: 256, minV: 0, maxV: 1,
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+
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+ set: function ( value ) {
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+
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+ if ( value instanceof THREE.Lut ) {
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+
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+ this.copy( value );
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+
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+ }
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+
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+ return this;
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+
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+ },
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+
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+ setMin: function ( min ) {
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+
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+ this.minV = min;
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+
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+ return this;
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+
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+ },
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+
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+ setMax: function ( max ) {
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+
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+ this.maxV = max;
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+
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+ return this;
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+
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+ },
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+
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+ changeNumberOfColors: function ( numberofcolors ) {
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+
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+ this.n = numberofcolors;
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+
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+ return new THREE.Lut( this.mapname, this.n );
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+
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+ },
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+
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+ changeColorMap: function ( colormap ) {
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+
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+ this.mapname = colormap;
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+
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+ return new THREE.Lut( this.mapname, this.n );
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+
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+ },
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+
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+ copy: function ( lut ) {
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+
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+ this.lut = lut.lut;
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+ this.mapname = lut.mapname;
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+ this.map = lut.map;
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+ this.n = lut.n;
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+ this.minV = lut.minV;
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+ this.maxV = lut.maxV;
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+
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+ return this;
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+
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+ },
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+
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+ getColor: function ( alpha ) {
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+
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+
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+ if ( alpha <= this.minV ) {
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+
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+ alpha = this.minV;
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+
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+ }
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+
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+ else if ( alpha >= this.maxV ) {
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+
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+ alpha = this.maxV;
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+
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+ }
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+
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+
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+ alpha = ( alpha - this.minV ) / ( this.maxV - this.minV );
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+
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+ var colorPosition = Math.round ( alpha * this.n );
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+ colorPosition == this.n ? colorPosition -= 1 : colorPosition;
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+
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+ return this.lut[ colorPosition ];
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+
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+ },
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+
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+ addColorMap: function ( colormapName, arrayOfColors ) {
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+
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+ THREE.ColorMapKeywords[ colormapName ] = arrayOfColors;
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+
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+ },
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+
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+};
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+
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+THREE.ColorMapKeywords = {
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+
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+ "rainbow": [ [ 0.0, '0x0000FF' ], [ 0.2, '0x00FFFF' ], [ 0.5, '0x00FF00' ], [ 0.8, '0xFFFF00'], [1.0, '0xFF0000' ] ],
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+ "cooltowarm": [ [ 0.0, '0x3C4EC2' ], [ 0.2, '0x9BBCFF' ], [ 0.5, '0xDCDCDC' ], [ 0.8, '0xF6A385'], [1.0, '0xB40426' ] ],
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+ "blackbody" : [ [ 0.0, '0x000000' ], [ 0.2, '0x780000' ], [ 0.5, '0xE63200' ], [ 0.8, '0xFFFF00'], [1.0, '0xFFFFFF' ] ]
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+
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+}
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daron1337