@vikasietum_tecknology/record-rtc/WebGL-Recording/vendor/glge-compiled.js

record-rtc is a library based on recordrtc library. In this forked version of the original library we have optimized the memory management. The video recording is stored in IndexDB in chunks.

/*
GLGE WebGL Graphics Engine
Copyright (c) 2010, Paul Brunt
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of GLGE nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL PAUL BRUNT BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**
 * @fileOverview
 * @name GLGE_math.js
 */

 if(typeof(GLGE) == "undefined"){
	/**
	* @namespace Holds the functionality of the library
	*/
	GLGE = {};
}

(function(GLGE){


var matrixCache=[];

//matrix reuse prevent so much GC
GLGE.reuseMatrix4=function(mat4){
	//if(mat4 && mat4.length==16 && matrixCache<10000) matrixCache.push(mat4);
}

GLGE.matrix4=function(a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16){
	if(matrixCache.length==0){
		var mat=[a1,a2,a3,a4,a5,a6,a7,a8,a9,a10,a11,a12,a13,a14,a15,a16];
	}else{
		var mat=matrixCache.shift();
		mat[0]=a1;
		mat[1]=a2;
		mat[2]=a3;
		mat[3]=a4;
		mat[4]=a5;
		mat[5]=a6;
		mat[6]=a7;
		mat[7]=a8;
		mat[8]=a9;
		mat[9]=a10;
		mat[10]=a11;
		mat[11]=a12;
		mat[12]=a13;
		mat[13]=a14;
		mat[14]=a15;
		mat[15]=a16;
	}
	return mat;	
}


GLGE.Vec=function(array) {
    return array.slice(0);
}

/**
* The Vec3 Class creates a vector 
* @param {Array} array An array of 3 floats
*/
GLGE.Vec3=function(x,y,z){
    return [x,y,z];
}

/**
* The Vec4 Class creates a vector 
* @param {Array} array An array of 4 floats
*/
GLGE.Vec4=function(x,y,z,w){
    return [x,y,z,w];
}

/**
* Gets the nth element (1 indexed) from the array
* @param {Array} v A vector with 4 elements
* @param {number} i The index from one 
*/
GLGE.get1basedVec4=function(v,i){
	return v[i-1];
};
/**
* Gets the nth element (1 indexed) from the array
* @param {Array} v A vector with 3 elements
* @param {number} i The index from one 
*/
GLGE.get1basedVec3=function(v,i){
	return v[i-1];
};

/**
* Gets the nth element (1 indexed) from the array
* @param {Array} v A vector with 4 elements
* @param {number} i The index from one 
*/
GLGE.getVec4=function(v,i){
	return v[i];
};
/**
* Gets the nth element (1 indexed) from the array
* @param {Array} v A vector with 3 elements
* @param {number} i The index from one 
*/
GLGE.getVec3=function(v,i){
	return v[i];
};



/**
* Adds a GLGE.Vec4 to this Vec4
* @param {Array} a The first value to add
* * @param {Array} b The second value to add
*/
GLGE.addVec4=function(a,b) {
    return [a[0]+b[0],a[1]+b[1],a[2]+b[2],a[3]+b[3]];
}
/**
* Adds a GLGE.Vec3 to this GLGE.Vec3
* @param {Array} a The first value to add
* @param {Array} b The second value to add
*/
GLGE.addVec3=function(a,b) {
    return [a[0]+b[0],a[1]+b[1],a[2]+b[2]];
}


/**
* Adds a GLGE.Vec4 to this Vec4
* @param {Array} a The first value
* * @param {Array} b The second value to subtract from the first
*/
GLGE.subVec4=function(a,b) {
    return [a[0]-b[0],a[1]-b[1],a[2]-b[2],a[3]-b[3]];
}
/**
* Adds a GLGE.Vec3 to this GLGE.Vec3
* @param {Array} a The first value
* @param {Array} b The second value to subtract from the first
*/
GLGE.subVec3=function(a,b) {
    return [a[0]-b[0],a[1]-b[1],a[2]-b[2]];
}

/**
* Negates a GLGE.Vec4
*/
GLGE.negVec4=function(a) {
    return [-a[0], -a[1], -a[2], -a[3]];
}
GLGE.negVec3=function(a) {
    return [-a[0], -a[1], -a[2]];
}


/**
* Gets the dot product between this and the input vector
* @param {Array} a the first value to dot
* @param {Array} b the second value to dot
*/
GLGE.dotVec3=function(a,b) {
    return a[0]*b[0]+a[1]*b[1]+a[2]*b[2];
}


/**
* Gets the dot product between this and the input vector
* @param {Array} a the first value to dot
* @param {Array} b the second value to dot
*/
GLGE.dotVec4=function(a,b) {
    return a[0]*b[0]+a[1]*b[1]+a[2]*b[2]+a[3]*b[3];
}

/**
* Gets the dot product between this and the input vector
* @param {Array} a the vector to scale
* @param {Number} b the scalar
*/
GLGE.scaleVec4=function(a,b) {
    return [a[0]*b,a[1]*b,a[2]*b,a[3]*b];
}

/**
* Gets the dot product between this and the input vector
* @param {Array} a the vector to scale
* @param {Number} b the scalar
*/
GLGE.scaleVec3=function(a,b) {
    return [a[0]*b,a[1]*b,a[2]*b];
}


/**
* Gets the cross product between this and the input vector
* @param {Array} a the first value to dot
* @param {Array} b the second value to dot
*/
GLGE.crossVec3=function(a,b) {
  return [a[1]*b[2]-a[2]*b[1],
          a[2]*b[0]-a[0]*b[2],
          a[0]*b[1]-a[1]*b[0]];
}

/**
* Returns a unitized version of the input vector3
* @param {Array} a the vector3 to be unitized
*/
GLGE.toUnitVec3=function(a) {
    var sq=a[0]*a[0]+a[1]*a[1]+a[2]*a[2];
    var f=1.0;
    if (sq>0) {
        f=Math.pow(sq,0.5);
    }
    return [a[0]/f,a[1]/f,a[2]/f];
};

/**
* Returns a unitized version of the input vector4
* @param {Array} a the vector4 to be unitized
*/
GLGE.toUnitVec4=function(a) {
    var sq=a[0]*a[0]+a[1]*a[1]+a[2]*a[2]+a[3]*a[3];
    var f=1.0;
    if (sq>0) {
        f=Math.pow(sq,0.5);
    }
    return [a[0]/f,a[1]/f,a[2]/f,a[3]/f];
};


/**
* Returns the length of a vector3
* @param {Array} a the vector to be measured
*/
GLGE.lengthVec3=function(a) {
    return Math.pow(a[0]*a[0]+a[1]*a[1]+a[2]*a[2],0.5);
};

/**
* Returns the distance between 2 vector3s
* @param {Array} a the first vector
* @param {Array} b the second vector
*/
GLGE.distanceVec3=function(a,b){
    return GLGE.lengthVec3(GLGE.subVec3(a,b));
};

/**
* Returns the length of a vector3
* @param {Array} a the vector to be measured
*/
GLGE.lengthVec4=function(a,b) {
    return Math.pow(a[0]*a[0]+a[1]*a[1]+a[2]*a[2]+a[3]*a[3],0.5);
};

/**
* Returns the distance between 2 vector4s
* @param {Array} a the first vector
* @param {Array} b the second vector
*/
GLGE.distanceVec4=function(a,b){
    return GLGE.lengthVec4(GLGE.subVec4(a,b));
};


/**
* Returns the angle between 2 vector3s in radians
* @param {Array} a the first vector
* @param {Array} b the second vector
*/
GLGE.angleVec3=function(a,b){
    a=GLGE.toUnitVec3(a);
    b=GLGE.toUnitVec3(b);
    d=GLGE.dotVec3(a,b);
    if (d<-1)
        d=-1;
    if (d>1)
        d=1;
    return Math.acos(d);
};

/**
* Returns the angle between 2 vector4s in radians
* @param {Array} a the first vector
* @param {Array} b the second vector
*/
GLGE.angleVec4=function(a,b){
    a=GLGE.toUnitVec4(a);
    b=GLGE.toUnitVec4(b);
    d=GLGE.dotVec4(a,b);
    if (d<-1)
        d=-1;
    if (d>1)
        d=1;
    return Math.acos(d);
};

GLGE_math_use_webgl_float=false;

/**
* The Mat class creates a matrix from an array
* @param {Array} array An array of 9 or 16 floats
*/
GLGE.Mat3=GLGE_math_use_webgl_float?function(array) {
    if (array.length==9) {
        return new Float32Array(array);
    }else if (array.length==16) {
        return new Float32Array([array[0],array[1],array[2],array[4],array[5],array[6],array[8],array[9],array[10]]);        
    }else {
		throw "invalid matrix length";
    }
}:function(array) {
    var retval;
    if (array.length==9) {
        retval=array.slice(0);
    }else if (array.length==16) {
        retval=[array[0],array[1],array[2],array[4],array[5],array[6],array[8],array[9],array[10]];
    }else {
		throw "invalid matrix length";
    }    
    retval.get=function(i){return this[i];};
    return retval;
};
GLGE.Mat=GLGE_math_use_webgl_float?function(array) {
    return new Float32Array(array);
}:function(array){
    var retval=array.slice(0);
    retval.get=function(i){return this[i];};
    return retval;
};
GLGE.Mat4=function(array) {
    var retval;
    if (array.length==9) {
        retval=[array[0],array[1],array[2],0,array[3],array[4],array[5],0,array[6],array[7],array[8],0,0,0,0,1];
    }else if (array.length==16) {
        if(array.slice) retval=array.slice(0);
		else retval=array.subarray(0);
    }else {
        throw "invalid matrix length";
    }
    retval.get=function(i){return this[i];};
    return retval;
};
/**
* Finds the determinate of the matrix
* @returns {number} the determinate
*/
GLGE.determinantMat4=function(m) {
    return m[12] * m[9] * m[6] * m[3] - m[8] * m[13] * m[6] * m[3] - m[12] * m[5] * m[10] * m[3] + m[4] * m[13] * m[10] * m[3] + m[8] * m[5] * m[14] * m[3] - m[4] * m[9] * m[14] * m[3] - m[12] * m[9] * m[2] * m[7] + m[8] * m[13] * m[2] * m[7] + m[12] * m[1] * m[10] * m[7] - m[0] * m[13] * m[10] * m[7] - m[8] * m[1] * m[14] * m[7] + m[0] * m[9] * m[14] * m[7] + m[12] * m[5] * m[2] * m[11] - m[4] * m[13] * m[2] * m[11] - m[12] * m[1] * m[6] * m[11] + m[0] * m[13] * m[6] * m[11] + m[4] * m[1] * m[14] * m[11] - m[0] * m[5] * m[14] * m[11] - m[8] * m[5] * m[2] * m[15] + m[4] * m[9] * m[2] * m[15] + m[8] * m[1] * m[6] * m[15] - m[0] * m[9] * m[6] * m[15] - m[4] * m[1] * m[10] * m[15] + m[0] * m[5] * m[10] * m[15];
};

/**
* Finds the inverse of the matrix
* @returns {GLGE.Mat} the inverse
*/
GLGE.inverseMat4=function(mat){
	// Cache the matrix values (makes for huge speed increases!)
	var a00 = mat[0], a01 = mat[1], a02 = mat[2], a03 = mat[3];
	var a10 = mat[4], a11 = mat[5], a12 = mat[6], a13 = mat[7];
	var a20 = mat[8], a21 = mat[9], a22 = mat[10], a23 = mat[11];
	var a30 = mat[12], a31 = mat[13], a32 = mat[14], a33 = mat[15];
	
	var d = a30*a21*a12*a03 - a20*a31*a12*a03 - a30*a11*a22*a03 + a10*a31*a22*a03 +
			a20*a11*a32*a03 - a10*a21*a32*a03 - a30*a21*a02*a13 + a20*a31*a02*a13 +
			a30*a01*a22*a13 - a00*a31*a22*a13 - a20*a01*a32*a13 + a00*a21*a32*a13 +
			a30*a11*a02*a23 - a10*a31*a02*a23 - a30*a01*a12*a23 + a00*a31*a12*a23 +
			a10*a01*a32*a23 - a00*a11*a32*a23 - a20*a11*a02*a33 + a10*a21*a02*a33 +
			a20*a01*a12*a33 - a00*a21*a12*a33 - a10*a01*a22*a33 + a00*a11*a22*a33;
	
	return GLGE.matrix4((a21*a32*a13 - a31*a22*a13 + a31*a12*a23 - a11*a32*a23 - a21*a12*a33 + a11*a22*a33)/d,
	(a31*a22*a03 - a21*a32*a03 - a31*a02*a23 + a01*a32*a23 + a21*a02*a33 - a01*a22*a33)/d,
	(a11*a32*a03 - a31*a12*a03 + a31*a02*a13 - a01*a32*a13 - a11*a02*a33 + a01*a12*a33)/d,
	(a21*a12*a03 - a11*a22*a03 - a21*a02*a13 + a01*a22*a13 + a11*a02*a23 - a01*a12*a23)/d,
	(a30*a22*a13 - a20*a32*a13 - a30*a12*a23 + a10*a32*a23 + a20*a12*a33 - a10*a22*a33)/d,
	(a20*a32*a03 - a30*a22*a03 + a30*a02*a23 - a00*a32*a23 - a20*a02*a33 + a00*a22*a33)/d,
	(a30*a12*a03 - a10*a32*a03 - a30*a02*a13 + a00*a32*a13 + a10*a02*a33 - a00*a12*a33)/d,
	(a10*a22*a03 - a20*a12*a03 + a20*a02*a13 - a00*a22*a13 - a10*a02*a23 + a00*a12*a23)/d,
	(a20*a31*a13 - a30*a21*a13 + a30*a11*a23 - a10*a31*a23 - a20*a11*a33 + a10*a21*a33)/d,
	(a30*a21*a03 - a20*a31*a03 - a30*a01*a23 + a00*a31*a23 + a20*a01*a33 - a00*a21*a33)/d,
	(a10*a31*a03 - a30*a11*a03 + a30*a01*a13 - a00*a31*a13 - a10*a01*a33 + a00*a11*a33)/d,
	(a20*a11*a03 - a10*a21*a03 - a20*a01*a13 + a00*a21*a13 + a10*a01*a23 - a00*a11*a23)/d,
	(a30*a21*a12 - a20*a31*a12 - a30*a11*a22 + a10*a31*a22 + a20*a11*a32 - a10*a21*a32)/d,
	(a20*a31*a02 - a30*a21*a02 + a30*a01*a22 - a00*a31*a22 - a20*a01*a32 + a00*a21*a32)/d,
	(a30*a11*a02 - a10*a31*a02 - a30*a01*a12 + a00*a31*a12 + a10*a01*a32 - a00*a11*a32)/d,
	(a10*a21*a02 - a20*a11*a02 + a20*a01*a12 - a00*a21*a12 - a10*a01*a22 + a00*a11*a22)/d)
};

/**
* multiplies two mat4's
* @returns {GLGE.Mat} the matrix multiplication of the matrices
*/
GLGE.mulMat4Vec3=function(mat1,vec2){
	return GLGE.Vec3(mat1[0]*vec2[0]+mat1[1]*vec2[1]+mat1[2]*vec2[2]+mat1[3],
			          mat1[4]*vec2[0]+mat1[5]*vec2[1]+mat1[6]*vec2[2]+mat1[7],
			          mat1[8]*vec2[0]+mat1[9]*vec2[1]+mat1[10]*vec2[2]+mat1[11]);
};

/**
* multiplies two mat4's
* @returns {GLGE.Mat} the matrix multiplication of the matrices
*/
GLGE.mulMat4Vec4=function(mat1,vec2){
	return GLGE.Vec4(mat1[0]*vec2[0]+mat1[1]*vec2[1]+mat1[2]*vec2[2]+mat1[3]*vec2[3],
			          mat1[4]*vec2[0]+mat1[5]*vec2[1]+mat1[6]*vec2[2]+mat1[7]*vec2[3],
			          mat1[8]*vec2[0]+mat1[9]*vec2[1]+mat1[10]*vec2[2]+mat1[11]*vec2[3],
			          mat1[12]*vec2[0]+mat1[13]*vec2[1]+mat1[14]*vec2[2]+mat1[15]*vec2[3]);
};
     
/**
* multiplies a Mat4 by a scalar value
* @returns {GLGE.Mat} the matrix multiplication of the matrices
*/
GLGE.scaleMat4=function(m,value) {
    return GLGE.matrix4([m[0]*value,m[1]*value,m[2]*value,m[3]*value,
                                m[4]*value,m[5]*value,m[6]*value,m[7]*value,
                                m[8]*value,m[9]*value,m[10]*value,m[11]*value,
                                m[12]*value,m[13]*value,m[14]*value,m[15]*value]);
};
/**
* multiplies a Mat4 by a scalar value in place without allocation
* @returns {GLGE.Mat} the input matrix, modified
*/
GLGE.scaleInPlaceMat4=function(m,value) {
    m.set(0,m[0]*value);
    m.set(1,m[1]*value);
    m.set(2,m[2]*value);
    m.set(3,m[3]*value);
    m.set(4,m[4]*value);
    m.set(5,m[5]*value);
    m.set(6,m[6]*value);
    m.set(7,m[7]*value);
    m.set(8,m[8]*value);
    m.set(9,m[9]*value);
    m.set(10,m[10]*value);
    m.set(11,m[11]*value);
    m.set(12,m[12]*value);
    m.set(13,m[13]*value);
    m.set(14,m[14]*value);
    m.set(15,m[15]*value);
    return m;
};

/**
* adds a Mat4 to another Mat4 in place without allocation
* @returns {GLGE.Mat} the first input matrix, modified to be added
*/
GLGE.addInPlaceMat4=function(m,value) {
    m.set(0,m[0]+value[0]);
    m.set(1,m[1]+value[1]);
    m.set(2,m[2]+value[2]);
    m.set(3,m[3]+value[3]);
    m.set(4,m[4]+value[4]);
    m.set(5,m[5]+value[5]);
    m.set(6,m[6]+value[6]);
    m.set(7,m[7]+value[7]);
    m.set(8,m[8]+value[8]);
    m.set(9,m[9]+value[9]);
    m.set(10,m[10]+value[10]);
    m.set(11,m[11]+value[11]);
    m.set(12,m[12]+value[12]);
    m.set(13,m[13]+value[13]);
    m.set(14,m[14]+value[14]);
    m.set(15,m[15]+value[15]);
    return m;
};



/**
* adds two Mat4 together
* @returns {GLGE.Mat} a new, added Mat4
*/
GLGE.addMat4=function(m,value) {
return GLGE.Mat([m[0]+value[0],
                 m[1]+value[1],
                 m[2]+value[2],
                 m[3]+value[3],
                 m[4]+value[4],
                 m[5]+value[5],
                 m[6]+value[6],
                 m[7]+value[7],
                 m[8]+value[8],
                 m[9]+value[9],
                 m[10]+value[10],
                 m[11]+value[11],
                 m[12]+value[12],
                 m[13]+value[13],
                 m[14]+value[14],
                 m[15]+value[15]]);
    return m;
};



/**
* subs a Mat4 from another Mat4 in place without allocation
* @returns {GLGE.Mat} the first input matrix, modified to have the second subtacted
*/
GLGE.subInPlaceMat4=function(m,value) {
    m.set(0,m[0]-value[0]);
    m.set(1,m[1]-value[1]);
    m.set(2,m[2]-value[2]);
    m.set(3,m[3]-value[3]);
    m.set(4,m[4]-value[4]);
    m.set(5,m[5]-value[5]);
    m.set(6,m[6]-value[6]);
    m.set(7,m[7]-value[7]);
    m.set(8,m[8]-value[8]);
    m.set(9,m[9]-value[9]);
    m.set(10,m[10]-value[10]);
    m.set(11,m[11]-value[11]);
    m.set(12,m[12]-value[12]);
    m.set(13,m[13]-value[13]);
    m.set(14,m[14]-value[14]);
    m.set(15,m[15]-value[15]);
    return m;
};



/**
* subtracts the second matrix from the first
* @returns {GLGE.Mat} a new, subed Mat4
*/
GLGE.subMat4=function(m,value) {
return GLGE.Mat([m[0]-value[0],
                 m[1]-value[1],
                 m[2]-value[2],
                 m[3]-value[3],
                 m[4]-value[4],
                 m[5]-value[5],
                 m[6]-value[6],
                 m[7]-value[7],
                 m[8]-value[8],
                 m[9]-value[9],
                 m[10]-value[10],
                 m[11]-value[11],
                 m[12]-value[12],
                 m[13]-value[13],
                 m[14]-value[14],
                 m[15]-value[15]]);
    return m;
};


/**
* Finds the matrix multiplication with another GLGE.Mat or GLGE.vec or an Array of length 3-4
* @param {object} value An GLGE.Mat, GLGE.vec or Array
* @returns {GLGE.Mat|GLGE.Vec}
*/
GLGE.mulMat4=function(mat2,mat1){

	var a00 = mat1[0], a01 = mat1[1], a02 = mat1[2], a03 = mat1[3];
	var a10 = mat1[4], a11 = mat1[5], a12 = mat1[6], a13 = mat1[7];
	var a20 = mat1[8], a21 = mat1[9], a22 = mat1[10], a23 = mat1[11];
	var a30 = mat1[12], a31 = mat1[13], a32 = mat1[14], a33 = mat1[15];
	
	var b00 = mat2[0], b01 = mat2[1], b02 = mat2[2], b03 = mat2[3];
	var b10 = mat2[4], b11 = mat2[5], b12 = mat2[6], b13 = mat2[7];
	var b20 = mat2[8], b21 = mat2[9], b22 = mat2[10], b23 = mat2[11];
	var b30 = mat2[12], b31 = mat2[13], b32 = mat2[14], b33 = mat2[15];
	return GLGE.matrix4(b00 * a00 + b01 * a10 + b02 * a20 + b03 * a30,
		b00 * a01 + b01 * a11 + b02 * a21 + b03 * a31,
		b00 * a02 + b01 * a12 + b02 * a22 + b03 * a32,
		b00 * a03 + b01 * a13 + b02 * a23 + b03 * a33,
		
		b10 * a00 + b11 * a10 + b12 * a20 + b13 * a30,
		b10 * a01 + b11 * a11 + b12 * a21 + b13 * a31,
		b10 * a02 + b11 * a12 + b12 * a22 + b13 * a32,
		b10 * a03 + b11 * a13 + b12 * a23 + b13 * a33,
		
		b20 * a00 + b21 * a10 + b22 * a20 + b23 * a30,
		b20 * a01 + b21 * a11 + b22 * a21 + b23 * a31,
		b20 * a02 + b21 * a12 + b22 * a22 + b23 * a32,
		b20 * a03 + b21 * a13 + b22 * a23 + b23 * a33,
		
		b30 * a00 + b31 * a10 + b32 * a20 + b33 * a30,
		b30 * a01 + b31 * a11 + b32 * a21 + b33 * a31,
		b30 * a02 + b31 * a12 + b32 * a22 + b33 * a32,
		b30 * a03 + b31 * a13 + b32 * a23 + b33 * a33);
};

GLGE.transposeInPlaceMat4=function(m) {
    var v=m[1];
    m.set(1,m[4]);
    m.set(4,v);


    v=m[8];
    m.set(8,m[2]);
    m.set(2,v);
    

    v=m[3];
    m.set(3,m[12]);
    m.set(12,v);

    v=m[9];
    m.set(9,m[6]);
    m.set(6,v);

    v=m[13];
    m.set(13,m[7]);
    m.set(7,v);

    v=m[14];
    m.set(14,m[11]);
    m.set(11,v);
    
};

/**
* Builds the transpose of the matrix
* @returns {GLGE.Mat} the transposed matrix
*/
GLGE.transposeMat4=function(m) {
    return GLGE.matrix4(m[0],m[4],m[8],m[12],
		              m[1],m[5],m[9],m[13],
		              m[2],m[6],m[10],m[14],
		              m[3],m[7],m[11],m[15]);
};

/**
* copys a js array into a webglarray
* @param {array} mat the source array
* @param {webglarray} glarray the destination array
*/
GLGE.mat4gl=function(mat,glarray){
	glarray[0]=mat[0];
	glarray[1]=mat[1];
	glarray[2]=mat[2];
	glarray[3]=mat[3];
	glarray[4]=mat[4];
	glarray[5]=mat[5];
	glarray[6]=mat[6];
	glarray[7]=mat[7];
	glarray[8]=mat[8];
	glarray[9]=mat[9];
	glarray[10]=mat[10];
	glarray[11]=mat[11];
	glarray[12]=mat[12];
	glarray[13]=mat[13];
	glarray[14]=mat[14];
	glarray[15]=mat[15];
};

/**
* Sets the value at the specified index
* @param {number} i the first index 1 offset
* @param {number} j the second index 1 offset
* @param {number} value the value to set
*/
GLGE.set1basedMat4=function(m,i,j,value){
	m[(i-1)*4+(j-1)]=value;
    if(m.glData!==undefined){
        delete m.glData;
    }
};

/**
* Sets the value at the specified index
* @param {number} i the first index from zero
* @param {number} j the second index from zero
* @param {number} value the value to set
*/
GLGE.setMat4=function(m,i,j,value){
	m[i*4+j]=value;
    if(m.glData!==undefined){
        delete m.glData;
    }
};

/**
* Gets the value at the specified index
* @param {number} i the first index from one
* @param {number} j the second index from one
* @returns {number} the value at the given index
*/
GLGE.get1basedMat4=function(m,i,j){
	return m.get((i-1)*4+(j-1));
};

/**
* Gets the value at the specified index
* @param {number} i the first index from zero
* @param {number} j the second index from zero
* @returns {number} the value at the given index
*/
GLGE.getMat4=function(m,i,j){
	return m[i*4+j];
};
/**
* gets the a webgl float array for this Matrix, once generated it will cache it so it doesn't need to recreate everytime
* @returns {Float32Array} the webgl array for this Matrix
* @private
*/
GLGE.glDataMat4=function(m) {
    m.glArray=new Float32Array(m);
    return m.glArray;
};
/**
 * Creates an identity matrix
 * @returns {GLGE.Mat} the identity matrix
 */
GLGE.identMatrix=function(){
	return GLGE.matrix4(1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1);
};
/**
 * Creates a translation matrix
 * @returns {Array} value an array GLGE.Vec or 3 paramters
 * @returns {GLGE.Mat} the translation matrix
 */
GLGE.translateMatrix=function(value){
	var x;
	var y;
	var z;
	if(arguments.length==3){
		x=arguments[0];
		y=arguments[1];
		z=arguments[2];
	}
	else if(value.data){
		x=value.data[0];
		y=value.data[1];
		z=value.data[2];
	}
	else if(value instanceof Array){
		x=value[0];
		y=value[1];
		z=value[2];
	}
	return GLGE.matrix4(
		1,0,0,x,
		0,1,0,y,
		0,0,1,z,
		0,0,0,1
		);
};
/**
 * Creates a scale matrix
 * @returns {Array} value an array GLGE.Vec or 3 paramters
 * @returns {GLGE.Mat} the scale matrix
 */
GLGE.scaleMatrix=function(value){
    var x;
    var y;
    var z;
	if(arguments.length==3){
		x=arguments[0];
		y=arguments[1];
		z=arguments[2];
	}
	else if(value.data){
		x=value.data[0];
		y=value.data[1];
		z=value.data[2];
	}
	else if(value instanceof Array){
		x=value[0];
		y=value[1];
		z=value[2];
	}
	return GLGE.matrix4(
		x,0,0,0,
		0,y,0,0,
		0,0,z,0,
		0,0,0,1
		);
}
/**
* @constant 
* @description Enum for XYZ rotation order
*/
GLGE.ROT_XYZ=1;
/**
* @constant 
* @description Enum for XZY rotation order
*/
GLGE.ROT_XZY=2;
/**
* @constant 
* @description Enum for YXZ rotation order
*/
GLGE.ROT_YXZ=3;
/**
* @constant 
* @description Enum for YZX rotation order
*/
GLGE.ROT_YZX=4;
/**
* @constant 
* @description Enum for ZXY rotation order
*/
GLGE.ROT_ZXY=5;
/**
* @constant 
* @description Enum for ZYX rotation order
*/
GLGE.ROT_ZYX=6;
/**
 * Creates a rotation matrix
 * @returns {Array} value an array GLGE.Vec or 3 paramters
 * @returns {GLGE.Mat} the rotation matrix
 */
GLGE.rotateMatrix=function(value,type) {
    var x;
    var y;
    var z;
	if(arguments.length>2){
		x=arguments[0];
		y=arguments[1];
		z=arguments[2];
		type=arguments[3];
	}
	else if(value.data){
		x=value.data[0];
		y=value.data[1];
		z=value.data[2];
	}
	else if(value instanceof Array){
		x=value[0];
		y=value[1];
		z=value[2];
	}
	if(!type) type=GLGE.ROT_XYZ;
	var cosx=Math.cos(x);
	var sinx=Math.sin(x);
	var cosy=Math.cos(y);
	var siny=Math.sin(y);
	var cosz=Math.cos(z);
	var sinz=Math.sin(z);
	var rotx=GLGE.matrix4(1,0,0,0,0,cosx,-sinx,0,0,sinx,cosx,0,0,0,0,1);
	var roty=GLGE.matrix4(cosy,0,siny,0,0,1,0,0,-siny,0,cosy,0,0,0,0,1);
	var rotz=GLGE.matrix4(cosz,-sinz,0,0,sinz,cosz,0,0,0,0,1,0,0,0,0,1);
	switch(type){
		case GLGE.ROT_XYZ:
			return GLGE.mulMat4(rotx,GLGE.mulMat4(roty,rotz));
			break;
		case GLGE.ROT_XZY:
			return GLGE.mulMat4(rotx,GLGE.mulMat4(rotz,roty));
			break;
		case GLGE.ROT_YXZ:
			return GLGE.mulMat4(roty,GLGE.mulMat4(rotx,rotz));
			break;
		case GLGE.ROT_YZX:
			return GLGE.mulMat4(roty,GLGE.mulMat4(rotz,rotx));
			break;
		case GLGE.ROT_ZXY:
			return GLGE.mulMat4(rotz,GLGE.mulMat4(rotx,roty));
			break;
		case GLGE.ROT_ZYX:
			return GLGE.mulMat4(rotz,GLGE.mulMat4(roty,rotx));
			break;
	}
}


GLGE.angleAxis=function(angle, axis) {
    var xmx,ymy,zmz,xmy,ymz,zmx,xms,yms,zms;
	axis=[axis[0],axis[1],axis[2],0];

        var x = axis[0];
        var y = axis[1];
        var z = axis[2];
	
	        
        var cos = Math.cos(angle);
        var cosi = 1.0 - cos;
	var sin = Math.sin(angle);
 
	xms = x * sin;yms = y * sin;zms = z * sin;
        xmx = x * x;ymy = y * y;zmz = z * z;
        xmy = x * y;ymz = y * z;zmx = z * x;
	
	var matrix = GLGE.matrix4((cosi * xmx) + cos,(cosi * xmy) - zms,(cosi * zmx) + yms,0,
			(cosi * xmy) + zms,(cosi * ymy) + cos,(cosi * ymz) - xms,0,
			(cosi * zmx) - yms,(cosi * ymz) + xms,(cosi * zmz) + cos,0,
			0,0,0,1);

        return GLGE.Mat(matrix);
};


// JHD
GLGE.quatFromAxisAngle = function(axis, angle) {
	var quaternion = [];
	var halfAngle = angle * 0.5;
	var sinus = Math.sin(halfAngle);
	var cosinus = Math.cos(halfAngle);
	quaternion[0] = axis[0] * sinus;
	quaternion[1] = axis[1] * sinus;
	quaternion[2] = axis[2] * sinus;
	quaternion[3] = cosinus;
	return quaternion;
};

GLGE.mulQuat = function(quaternion1, quaternion2) {
	var quaternion = [];
	var x = quaternion1[0];
	var y = quaternion1[1];
	var z = quaternion1[2];
	var w = quaternion1[3];
	var x2 = quaternion2[0];
	var y2 = quaternion2[1];
	var z2 = quaternion2[2];
	var w2 = quaternion2[3];
	var a = (y * z2) - (z * y2);
	var b = (z * x2) - (x * z2);
	var c = (x * y2) - (y * x2);
	var d = ((x * x2) + (y * y2)) + (z * z2);
	quaternion[0] = ((x * w2) + (x2 * w)) + a;
	quaternion[1] = ((y * w2) + (y2 * w)) + b;
	quaternion[2] = ((z * w2) + (z2 * w)) + c;
	quaternion[3] = (w * w2) - d;
	return quaternion;
};

GLGE.mat4FromQuat = function(quaternion) {
	// TODO: Optimize with storing the array-wise indexed values
	// in direct acessible variables?
	var x2 = quaternion[0] * quaternion[0];
	var y2 = quaternion[1] * quaternion[1];
	var z2 = quaternion[2] * quaternion[2];
	var xy = quaternion[0] * quaternion[1];
	var zw = quaternion[2] * quaternion[3];
	var zx = quaternion[2] * quaternion[0];
	var yw = quaternion[1] * quaternion[3];
	var yz = quaternion[1] * quaternion[2];
	var xw = quaternion[0] * quaternion[3];
	var result = [];
	result[0] = 1 - (2 * (y2 + z2));
	result[1] = 2 * (xy + zw);
	result[2] = 2 * (zx - yw);
	result[3] = 0;
	result[4] = 2 * (xy - zw);
	result[5] = 1 - (2 * (z2 + x2));
	result[6] = 2 * (yz + xw);
	result[7] = 0;
	result[8] = 2 * (zx + yw);
	result[9] = 2 * (yz - xw);
	result[10] = 1 - (2 * (y2 + x2));
	result[11] = 0;
	result[12] = 0;
	result[13] = 0;
	result[14] = 0;
	result[15] = 1;
	return result;
};
// JHD - end


GLGE.quatRotation=function(qx,qy,qz,qw){
	return GLGE.matrix4(
	                    1 - 2*qy*qy - 2*qz*qz,2*qx*qy - 2*qz*qw,2*qx*qz + 2*qy*qw,0,
	                    2*qx*qy + 2*qz*qw,1 - 2*qx*qx - 2*qz*qz,2*qy*qz - 2*qx*qw,0,
	                    2*qx*qz - 2*qy*qw,2*qy*qz + 2*qx*qw,1 - 2*qx*qx - 2*qy*qy,0,
	                    0,0,0,1
	                );
};


GLGE.makeOrtho=function(left,right,bottom,top,near,far){
	var x = -(right+left)/(right-left);
	var y = -(top+bottom)/(top-bottom);
	var z = -(far+near)/(far-near);

        return GLGE.matrix4(2/(right-left), 0, 0, x,
               0, 2/(top-bottom), 0, y,
               0, 0, -2/(far-near), z,
               0, 0, 0, 1);
};


GLGE.makeFrustum=function(left,right,bottom,top,near,far){
	var x = 2*near/(right-left);
	var y = 2*near/(top-bottom);
	var a = (right+left)/(right-left);
	var b = (top+bottom)/(top-bottom);
	var c = -(far+near)/(far-near);
	var d = -2*far*near/(far-near);
	return GLGE.matrix4(x, 0, a, 0,
		       0, y, b, 0,
		       0, 0, c, d,
		       0, 0, -1, 0);
};

GLGE.makePerspective=function(fovy, aspect, near, far){
	var ymax = near * Math.tan(fovy * 0.00872664625972);
	var ymin = -ymax;
	var xmin = ymin * aspect;
	var xmax = ymax * aspect;
	return GLGE.makeFrustum(xmin, xmax, ymin, ymax, near, far);
};

GLGE.makePerspectiveX=function(fovx, aspect, near, far){
	var xmax = near * Math.tan(fovx * 0.00872664625972);
	var xmin = -xmax;
	var ymin = xmin / aspect;
	var ymax = xmax / aspect;
	return GLGE.makeFrustum(xmin, xmax, ymin, ymax, near, far);
};

GLGE.matrix2Scale=function(m){
	var m1=m[0];
	var m2=m[1];
	var m3=m[2];
	var m4=m[4];
	var m5=m[5];
	var m6=m[6];
	var m7=m[8];
	var m8=m[9];
	var m9=m[10];
	var scaleX=Math.sqrt(m1*m1+m2*m2+m3*m3);
	var scaleY=Math.sqrt(m4*m4+m5*m5+m6*m6);
	var scaleZ=Math.sqrt(m7*m7+m8*m8+m9*m9);
	return [scaleX,scaleY,scaleZ]
}


GLGE.rotationMatrix2Quat=function(m){
	var tr = m[0] + m[5] + m[10]+1.0;
	var S,x,y,z,w;

	if (tr > 0) { 
		S = 0.5/Math.sqrt(tr); 
		w = 0.25 / S;
		x = (m[9] - m[6]) * S;
		y = (m[2] - m[8]) * S; 
		z = (m[4] - m[1]) * S; 
	} else if ((m[0] > m[5])&&(m[0] > m[10])) { 
		S = Math.sqrt(1.0 + m[0] - m[5] - m[10]) * 2; 
		w = (m[9] - m[6]) / S;
		x = 0.25 / S;
		y = (m[1] + m[4]) / S; 
		z = (m[2] + m[8]) / S; 
	} else if (m[5] > m[10]) { 
		S = Math.sqrt(1.0 + m[5] - m[0] - m[10]) * 2;
		w = (m[2] - m[8]) / S;
		x = (m[1] + m[4]) / S; 
		y = 0.25 / S;
		z = (m[6] + m[9]) / S; 
	} else { 
		S = Math.sqrt(1.0 + m[10] - m[0] - m[5]) * 2; 
		w = (m[4] - m[1]) / S;
		x = (m[2] + m[8]) / S;
		y = (m[6] + m[9]) / S;
		z = 0.25 / S;
	}
	var N=Math.sqrt(x*x+y*y+z*z+w*w)
	
	return [x/N,y/N,z/N,w/N];
}



//returns plane as array [X,Y,Z,D]
GLGE.rayToPlane=function(origin,dir){
	var dirnorm=GLGE.toUnitVec3(dir);
	return [dirnorm[0],dirnorm[1],dirnorm[2],GLGE.dotVec3(origin,dirnorm)];
}

GLGE.rayIntersectPlane=function(origin,dir,plane){
	var planeN=[plane[0],plane[1],plane[2]];
	var planeD=plane[3];
	var vdir=GLGE.dotVec3(planeN,dir);
	if(vdir<=0){
		//ray in wrong direction
		return false;
	}
	var vo=-(GLGE.dotVec3(planeN,origin)+planeD);
	var t=vo/vdir;
	if(t<=0){
		return false;
	}
	return GLGE.addVec3(origin,GLGE.scaleVec3(dir,t));
}
//assumes perspective projection
GLGE.screenToDirection=function(x,y,width,height,proj){
	xcoord =  -( ( ( 2 * x ) / width ) - 1 ) / proj[0];
	ycoord =( ( ( 2 * y ) / height ) - 1 ) / proj[5];
	zcoord =  1;
	return GLGE.toUnitVec3([xcoord,ycoord,zcoord]);
}

GLGE.BoundingVolume=function(minX,maxX,minY,maxY,minZ,maxZ){
	this.limits=[minX,maxX,minY,maxY,minZ,maxZ];
	
	this.calcProps();
}


GLGE.BoundingVolume.prototype.getCornerPoints=function(){
	return this.points;
}

//returns the radius of a bounding sphere
GLGE.BoundingVolume.prototype.getSphereRadius=function(){
	return this.radius;
}

//returns the center of a bounding volume
GLGE.BoundingVolume.prototype.getCenter=function(){
	return this.center;
}
GLGE.BoundingVolume.prototype.isNull=function(){
	return this.limits[0]==0&&this.limits[1]==0&&this.limits[2]==0&&this.limits[3]==0&&this.limits[4]==0&&this.limits[5]==0;
}
//adds an additional bounding volume to resize the current and returns the result
GLGE.BoundingVolume.prototype.addBoundingVolume=function(vol){
	if (this.isNull()) {
		this.limits[0]=vol.limits[0];
		this.limits[1]=vol.limits[1];
		this.limits[2]=vol.limits[2];
		this.limits[3]=vol.limits[3];
		this.limits[4]=vol.limits[4];
		this.limits[5]=vol.limits[5];
	}
	else if (!vol.isNull()) {
		this.limits[0]=Math.min(vol.limits[0],this.limits[0]);
		this.limits[2]=Math.min(vol.limits[2],this.limits[2]);
		this.limits[4]=Math.min(vol.limits[4],this.limits[4]);
		this.limits[1]=Math.max(vol.limits[1],this.limits[1]);
		this.limits[3]=Math.max(vol.limits[3],this.limits[3]);
		this.limits[5]=Math.max(vol.limits[5],this.limits[5]);
    }
	
	this.calcProps();
}

//scales a volume based on a transform matrix
GLGE.BoundingVolume.prototype.applyMatrix=function(matrix){
	var coord0=GLGE.mulMat4Vec4(matrix,[this.limits[0],this.limits[2],this.limits[4],1]);
	var coord1=GLGE.mulMat4Vec4(matrix,[this.limits[1],this.limits[2],this.limits[4],1]);
	var coord2=GLGE.mulMat4Vec4(matrix,[this.limits[0],this.limits[3],this.limits[4],1]);
	var coord3=GLGE.mulMat4Vec4(matrix,[this.limits[1],this.limits[3],this.limits[4],1]);
	var coord4=GLGE.mulMat4Vec4(matrix,[this.limits[0],this.limits[2],this.limits[5],1]);
	var coord5=GLGE.mulMat4Vec4(matrix,[this.limits[1],this.limits[2],this.limits[5],1]);
	var coord6=GLGE.mulMat4Vec4(matrix,[this.limits[0],this.limits[3],this.limits[5],1]);
	var coord7=GLGE.mulMat4Vec4(matrix,[this.limits[1],this.limits[3],this.limits[5],1]);
	this.limits[0]=Math.min(coord0[0],coord1[0],coord2[0],coord3[0],coord4[0],coord5[0],coord6[0],coord7[0]);
	this.limits[1]=Math.max(coord0[0],coord1[0],coord2[0],coord3[0],coord4[0],coord5[0],coord6[0],coord7[0]);
	this.limits[2]=Math.min(coord0[1],coord1[1],coord2[1],coord3[1],coord4[1],coord5[1],coord6[1],coord7[1]);
	this.limits[3]=Math.max(coord0[1],coord1[1],coord2[1],coord3[1],coord4[1],coord5[1],coord6[1],coord7[1]);
	this.limits[4]=Math.min(coord0[2],coord1[2],coord2[2],coord3[2],coord4[2],coord5[2],coord6[2],coord7[2]);
	this.limits[5]=Math.max(coord0[2],coord1[2],coord2[2],coord3[2],coord4[2],coord5[2],coord6[2],coord7[2]);
	this.calcProps();
}

GLGE.BoundingVolume.prototype.calcProps=function(){
	var minX=this.limits[0];
	var maxX=this.limits[1];
	var minY=this.limits[2];
	var maxY=this.limits[3];
	var minZ=this.limits[4];
	var maxZ=this.limits[5];
	this.points=[
		[minX,minY,minZ],
		[maxX,minY,minZ],
		[minX,maxY,minZ],
		[maxX,maxY,minZ],
		[minX,minY,maxZ],
		[maxX,minY,maxZ],
		[minX,maxY,maxZ],
		[maxX,maxY,maxZ]
	];
	this.center=[(this.limits[1]-this.limits[0])/2+this.limits[0],(this.limits[3]-this.limits[2])/2+this.limits[2],(this.limits[5]-this.limits[4])/2+this.limits[4]];
	var dx=this.limits[0]-this.center[0];
	var dy=this.limits[2]-this.center[1];
	var dz=this.limits[4]-this.center[2];
	this.radius=Math.sqrt(dx*dx+dy*dy+dz*dz);
}

GLGE.BoundingVolume.prototype.clone=function(){
	return new GLGE.BoundingVolume(this.limits[0],this.limits[1],this.limits[2],this.limits[3],this.limits[4],this.limits[5]);
}

GLGE.BoundingVolume.prototype.toString=function(){
	return this.limits.toString();
}


//creates the bounding planes for the cameraViewProjectionMatrix
GLGE.cameraViewProjectionToPlanes=function(cvp){
	var cvpinv=GLGE.inverseMat4(cvp);
	var mulMat4Vec4=GLGE.mulMat4Vec4;
	var subVec3=GLGE.subVec3;
	var crossVec3=GLGE.crossVec3;
	var toUnitVec3=GLGE.toUnitVec3;
	var dotVec3=GLGE.dotVec3
	
	var nbl=mulMat4Vec4(cvpinv,[-1,-1,-1,1]);
	var nbr=mulMat4Vec4(cvpinv,[1,-1,-1,1]);
	var fbl=mulMat4Vec4(cvpinv,[-1,-1,1,1]);
	var ntr=mulMat4Vec4(cvpinv,[1,1,-1,1]);
	var ftr=mulMat4Vec4(cvpinv,[1,1,1,1]);
	var ftl=mulMat4Vec4(cvpinv,[-1,1,1,1]);
	
	nbl=[nbl[0]/nbl[3],nbl[1]/nbl[3],nbl[2]/nbl[3]];
	nbr=[nbr[0]/nbr[3],nbr[1]/nbr[3],nbr[2]/nbr[3]];
	fbl=[fbl[0]/fbl[3],fbl[1]/fbl[3],fbl[2]/fbl[3]];
	ntr=[ntr[0]/ntr[3],ntr[1]/ntr[3],ntr[2]/ntr[3]];
	ftr=[ftr[0]/ftr[3],ftr[1]/ftr[3],ftr[2]/ftr[3]];
	ftl=[ftl[0]/ftl[3],ftl[1]/ftl[3],ftl[2]/ftl[3]];

	var nearnorm=toUnitVec3(crossVec3(subVec3(ntr,nbr),subVec3(nbl,nbr)));
	var farnorm=toUnitVec3(crossVec3(subVec3(ftl,fbl),subVec3(ftr,fbl)));
	var leftnorm=toUnitVec3(crossVec3(subVec3(nbl,fbl),subVec3(ftl,fbl)));
	var rightnorm=toUnitVec3(crossVec3(subVec3(ftr,ntr),subVec3(ntr,nbr)));
	var topnorm=toUnitVec3(crossVec3(subVec3(ftl,ntr),subVec3(ntr,ftr)));
	var bottomnorm=toUnitVec3(crossVec3(subVec3(nbl,nbr),subVec3(fbl,nbl)));

	nearnorm.push(dotVec3(nearnorm,nbl));
	farnorm.push(dotVec3(farnorm,fbl));
	leftnorm.push(dotVec3(leftnorm,nbl));
	rightnorm.push(dotVec3(rightnorm,nbr));
	topnorm.push(dotVec3(topnorm,ftr));
	bottomnorm.push(dotVec3(bottomnorm,nbl));
	//might be worth calulating the frustum sphere for optimization at this point!
	
	return [nearnorm,farnorm,leftnorm,rightnorm,topnorm,bottomnorm];
}


//Checks if sphere is within frustum planes
//sphere passed as [center.x,center.y,center.z,radius]
GLGE.sphereInFrustumPlanes=function(sphere,planes){
	var sphere0=sphere[0];var sphere1=sphere[1];
	var sphere2=sphere[2];var sphere3=sphere[3];
	var plane0=planes[0];var plane1=planes[1];
	var plane2=planes[2];var plane3=planes[3];
	var plane4=planes[4];var plane5=planes[5];
	if(sphere0*plane0[0] + sphere1*plane0[1] + sphere2*plane0[2] - plane0[3] - sphere3 > 0
	|| sphere0*plane1[0] + sphere1*plane1[1] + sphere2*plane1[2] - plane1[3]  - sphere3 > 0
	|| sphere0*plane2[0] + sphere1*plane2[1] + sphere2*plane2[2] - plane2[3]  - sphere3 > 0
	|| sphere0*plane3[0] + sphere1*plane3[1] + sphere2*plane3[2] - plane3[3]  - sphere3 > 0
	|| sphere0*plane4[0] + sphere1*plane4[1] + sphere2*plane4[2] - plane4[3]  - sphere3 > 0
	|| sphere0*plane5[0] + sphere1*plane5[1] + sphere2*plane5[2] - plane5[3]  - sphere3 > 0){
		return false;
	}else{
		return true;
	}
}

//checks if cube points are within the frustum planes
GLGE.pointsInFrustumPlanes=function(points,planes){
	var plane0=planes[0];var plane1=planes[1];
	var plane2=planes[2];var plane3=planes[3];
	var plane4=planes[4];var plane5=planes[5];
	var x, y, z;
	
	for(var i=0; i<points.length;i++){
		x=points[i][0];
		y=points[i][1];
		z=points[i][2];
	
		if(x*plane0[0] + y*plane0[1] + z*plane0[2] - plane0[3] > 0
		&& x*plane1[0] + y*plane1[1] + z*plane1[2] - plane1[3]  > 0
		&& x*plane2[0] + y*plane2[1] + z*plane2[2] - plane3[3]  > 0
		&& x*plane3[0] + y*plane3[1] + z*plane3[2] - plane4[3]  > 0
		&& x*plane4[0] + y*plane4[1] + z*plane4[2] - plane4[3]  > 0
		&& x*plane5[0] + y*plane5[1] + z*plane5[2] - plane5[3]  > 0){
			return false;
		}
	}
	return true;
}

//get projection matrix for a directional light
GLGE.getDirLightProjection=function(cvp,light,projectedDistance,distance){
	var pointTransform=GLGE.mulMat4(light,GLGE.inverseMat4(cvp));
	var min=[0,0,0];
	var max=[0,0,0];
	for(var x=0;x<2;x++){
		for(var y=0;y<2;y++){
			for(var z=0;z<2;z++){
				//var vec=GLGE.mulMat4Vec4(pointTransform,[x*2-1,y*2-1,z*projectedDistance,1]);
				var vec=GLGE.mulMat4Vec4(pointTransform,[x*2-1,y*2-1,(z*2-1),1]);
				//console.log(vec[0]/vec[3],vec[1]/vec[3],vec[2]/vec[3],vec[3]/vec[3]);
				vec[0]=vec[0]/vec[3];vec[1]=vec[1]/vec[3];vec[2]=vec[2]/vec[3];
				min[0]=min[0] > vec[0] ? vec[0] : min[0];
				min[1]=min[1] > vec[1] ? vec[1] : min[1];
				max[0]=max[0] < vec[0] ? vec[0] : max[0];
				max[1]=max[1] < vec[1] ? vec[1] : max[1];
				max[2]=max[2] < vec[2] ? vec[2] : max[2];
			}
		}
	}
	var mat=GLGE.makeOrtho(min[0],max[0],min[1],max[1],0.01,+distance);
	//mat[0]*=8;
	//mat[5]*=8;
	//var mat=GLGE.makeFrustum(min[0],max[0],min[1],max[1],500,0.01);
	//var mat=GLGE.makeOrtho(-30,30,-30,30,0.01,500);
	//alert(mat);
	return mat
};


function GLGE_mathUnitTest() {
    var a=GLGE.Vec([1,2,3,4]);
    var b=GLGE.Vec4(GLGE.getVec4(a,3),
                    GLGE.get1basedVec4(a,3),
                    GLGE.getVec4(a,1),
                    GLGE.getVec4(a,0));
    var c=GLGE.identMatrix();
    var d=GLGE.mulMat4Vec4(c,b);
    if (GLGE.getVec4(d,0)!=4||
        GLGE.getVec4(d,1)!=3||
        GLGE.getVec4(d,2)!=2||
        GLGE.getVec4(d,3)!=1) {
        throw "Unit Test 1 failed MatVecMul "+d;
    }
    var m=GLGE.Mat4([3,4,5,0,.5,.75,0,0,.75,.5,0,0,.25,.25,1,1]);
    var m1=GLGE.Mat4([2,1,8,2,1,4,3,2,1,.5,6.5,2,8,3,1,.25]);
    var mm1=GLGE.mulMat4(m,m1);
    var am1=GLGE.Mat4([15,21.5,68.5,24,
                       1.75,3.5,6.25,2.5,
                       2,2.75,7.5,2.5,
                       9.75,4.75,10.25,3.25]);
    for (var i=0;i<4;++i) {
        for (var j=0;j<4;++j) {      
            var diff=GLGE.getMat4(mm1,i,j)-GLGE.getMat4(am1,i,j);
            if (diff<.000001&&diff>-.000001) {                

            }else {
                throw "Unit Test 1 failed Multiplication "+GLGE.getMat4(mm1,i,j)+" != "+GLGE.getMat4(am1,i,j);      
            }
        }
    }
    var inv = GLGE.inverseMat4(m);
    var k = GLGE.mulMat4(m,inv);
    var l = GLGE.mulMat4(inv,m);
    for (var i=0;i<4;++i) {
        for (var j=0;j<4;++j) {      
            var diff=GLGE.getMat4(k,i,j)-GLGE.getMat4(c,i,j);
            if (diff<.0001&&diff>-.0001) {                
            }else {
                throw "Unit Test 1 failed Inverse "+GLGE.getMat4(k,i,j)+" != "+GLGE.getMat4(c,i,j);   
            }
        }
    }
}
GLGE_mathUnitTest() ;



})(GLGE);
/*
GLGE WebGL Graphics Engine
Copyright (c) 2010, Paul Brunt
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
    * Redistributions of source code must retain the above copyright
      notice, this list of conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright
      notice, this list of conditions and the following disclaimer in the
      documentation and/or other materials provided with the distribution.
    * Neither the name of GLGE nor the
      names of its contributors may be used to endorse or promote products
      derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL PAUL BRUNT BE LIABLE FOR ANY
DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

/**
 * @fileOverview
 * @name glge.js
 * @author me@paulbrunt.co.uk
 */



 if(typeof(GLGE) == "undefined"){
	/**
	* @namespace Holds the functionality of the library
	*/
	GLGE = {};
}

(function(GLGE){

//speed ups parsing a float that is already a float is expensive!
var parseFloat2=function(val){
	if(typeof val!="number") return parseFloat(val);
		else return val;
}


/**
* Function to augment one object with another
* @param {object} obj1 Source Object
* @param {object} obj2 Destination Object
*/
GLGE.augment=function(obj1,obj2){
	obj2.prototype.baseclass = obj1;
	for(var proto in obj1.prototype){
		if(!obj2.prototype[proto]) // do not overwrite functions of the derived objects
			obj2.prototype[proto]=obj1.prototype[proto];
		else // Attach those to the baseclass instead. Use 'call(this)' to call baseclass methods
			obj2.prototype.baseclass[proto]=obj1.prototype[proto];
	}
}


/**
* Moves all GLGE function to global
**/
GLGE.makeGlobal=function(){
	for(var key in GLGE){
		window[key]=GLGE[key];
	}
}

GLGE.New=function(createclass){
	if(GLGE[createclass].prototype.className!=""){
		return new GLGE[createclass]();
	}else{
		return false;
	}
}

/**
* @constant 
* @description Enumeration for TRUE
*/
GLGE.TRUE=1;
/**
* @constant 
* @description Enumeration for FALSE
*/
GLGE.FALSE=0;

/**
* @constant 
* @description Enumeration for global refrance frame
*/
GLGE.GLOBAL=0;
/**
* @constant 
* @description Enumeration for local refrance frame
*/
GLGE.LOCAL=1;


/**
* @constant 
* @description Enumeration for tri rendering
*/
GLGE.DRAW_TRIS=1;
/**
* @constant 
* @description Enumeration for line rendering
*/
GLGE.DRAW_LINES=2;

/**
* @constant 
* @description Enumeration for line loop rendering
*/
GLGE.DRAW_LINELOOPS=3;
/**
* @constant 
* @description Enumeration for line loop rendering
*/
GLGE.DRAW_LINESTRIPS=4;
/**
* @constant 
* @description Enumeration for point rendering
*/
GLGE.DRAW_POINTS=5;

/**
* @constant 
* @description Enumeration for point rendering
*/
GLGE.DRAW_TRIANGLESTRIP=6;




/**
* @constant 
* @description Enumeration for rendering using default shader
*/
GLGE.RENDER_DEFAULT=0;

/**
* @constant 
* @description Enumeration for rendering using shadow shader
*/
GLGE.RENDER_SHADOW=1;

/**
* @constant 
* @description Enumeration for rendering using pick shader
*/
GLGE.RENDER_PICK=2;

/**
* @constant 
* @description Enumeration for rendering using normal shader
*/
GLGE.RENDER_NORMAL=3;

/**
* @constant 
* @description Enumeration for emit rendering
*/
GLGE.RENDER_EMIT=4;

/**
* @constant 
* @description Enumeration for depth rendering
*/
GLGE.RENDER_DEPTH=5;

/**
* @constant 
* @description Enumeration for no rendering
*/
GLGE.RENDER_NULL=6;

/**
* @constant 
* @description Enumeration for box bound text picking
*/
GLGE.TEXT_BOXPICK=1;
/**
* @constant 
* @description Enumeration for text bound text picking
*/
GLGE.TEXT_TEXTPICK=2;

/**
* @constant 
* @description Enumeration for euler rotaions mode
*/
GLGE.P_EULER=1;

/**
* @constant 
* @description Enumeration for quaternions mode
*/
GLGE.P_QUAT=2;

/**
* @constant 
* @description Enumeration for matrix rotation mode
*/
GLGE.P_MATRIX=3;

/**
* @constant 
* @description Enumeration for no value
*/
GLGE.NONE=0;

/**
* @constant 
* @description Enumeration for X-Axis
*/
GLGE.XAXIS=1;
/**
* @constant 
* @description Enumeration for Y-Axis
*/
GLGE.YAXIS=2;
/**
* @constant 
* @description Enumeration for Z-Axis
*/
GLGE.ZAXIS=3;

/**
* @constant 
* @description Enumeration for +X-Axis
*/
GLGE.POS_XAXIS=1;
/**
* @constant 
* @description Enumeration for -X-Axis
*/
GLGE.NEG_XAXIS=2;
/**
* @constant 
* @description Enumeration for +Y-Axis
*/
GLGE.POS_YAXIS=3;
/**
* @constant 
* @description Enumeration for -Y-Axis
*/
GLGE.NEG_YAXIS=4;
/**
* @constant 
* @description Enumeration for +Z-Axis
*/
GLGE.POS_ZAXIS=5;
/**
* @constant 
* @description Enumeration for -Z-Axis
*/
GLGE.NEG_ZAXIS=6;


GLGE.ZERO="ZERO";
GLGE.ONE="ONE";
GLGE.SRC_COLOR="SRC_COLOR";
GLGE.ONE_MINUS_SRC_COLOR="ONE_MINUS_SRC_COLOR";
GLGE.SRC_ALPHA="SRC_ALPHA";
GLGE.ONE_MINUS_SRC_ALPHA="ONE_MINUS_SRC_ALPHA";
GLGE.DST_ALPHA="DST_ALPHA";
GLGE.ONE_MINUS_DST_ALPHA="ONE_MINUS_DST_ALPHA";


/**
* @constant 
* @description Linear blending function
*/
GLGE.LINEAR_BLEND=function(value){
	return value;
}
/**
* @constant 
* @description Quadratic blending function
*/
GLGE.QUAD_BLEND=function(value){
	return value*value;
}
/**
* @constant 
* @description Special blending function
*/
GLGE.SPECIAL_BLEND=function(value){
	value=value*(2-value);
	return value*value;
}


GLGE.error=function(error){
    if (console&&console.log)
        console.log("GLGE error: "+error);
    //do not use a modal dialog to indicate this users can override GLGE.error if they desire
};

GLGE.warning=function(warning){
    if (console&&console.log)
        console.log("GLGE warning: "+warning);
    //do not use a modal dialog to indicate this users can override GLGE.warning if they desire
};

/**
* @namespace Holds the global asset store
*/
GLGE.Assets={};
GLGE.Assets.assets={};
//don't need to register assets unless we are using network or webworkers
GLGE.REGISTER_ASSETS=false;
 
GLGE.Assets.createUUID=function(){
	var data=["0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F"];
	var data2=["8","9","A","B"];
	uuid="";
	for(var i=0;i<38;i++){
		switch(i){
			case 8:uuid=uuid+"-";break;
			case 13:uuid=uuid+"-";break;
			case 18:uuid=uuid+"-";break;
			case 14:uuid=uuid+"4";break;
			case 19:uuid=uuid+data2[Math.round(Math.random()*3)];break;
			default:uuid=uuid+data[Math.round(Math.random()*15)];break;
		}
	}
	return uuid;
}
/**
* @function registers a new asset
*/
GLGE.Assets.registerAsset=function(obj,uid){
	if(typeof uid=="object"){
		if(obj._) obj._(uid);
		uid=uid.uid;
	}
	if(!uid){
		uid=GLGE.Assets.createUUID();
	};
	obj.uid=uid;
	if(GLGE.REGISTER_ASSETS){
		GLGE.Assets.assets[uid]=obj;
	}
}
/**
* @function removes an asset
*/
GLGE.Assets.unregisterAsset=function(uid){
	delete GLGE.Assets.assets[uid];
}
/**
* @function finds an asset by uid
*/
GLGE.Assets.get=function(uid){
	var value=GLGE.Assets.assets[uid];
	if(value){
		return value;
	}else{
		return false;
	}
}

/**
* @function hashing function
* @private
*/
GLGE.DJBHash=function(str){
      var hash = 5381;

      for(var i = 0; i < str.length; i++){
		hash = ((hash << 5) + hash) + str.charCodeAt(i);
      }

      return hash;
}

/**
* @function check if shader is already created if not then create it
* @private
*/
GLGE.getGLShader=function(gl,type,str){
	var hash=GLGE.DJBHash(str);
	if(!gl.shaderCache) gl.shaderCache={};
	if(!gl.shaderCache[hash]){
		var shader=gl.createShader(type);
		gl.shaderSource(shader, str);
		gl.compileShader(shader);
		if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
			try {
				GLGE.error(gl.getShaderInfoLog(shader));
				return;
			} catch (e) {
				/* Firefox hack: Assume no error if there was no shader log. */
			}
		}
		gl.shaderCache[hash]=shader;
	}
	return gl.shaderCache[hash];
}

var progIdx=0;
/**
* @function tries to re use programs
* @private
*/
GLGE.getGLProgram=function(gl,vShader,fShader){
	if(!gl.programCache) gl.programCache=[];
	var programCache=gl.programCache;
	for(var i=0; i<programCache.length;i++){
		if(programCache[i].fShader==fShader && programCache[i].vShader==vShader){
			return programCache[i].program;
		}
	}
	var program=gl.createProgram();
	program.progIdx=progIdx++;
	gl.attachShader(program, vShader);
	gl.attachShader(program, fShader);
	gl.linkProgram(program);
	if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
		GLGE.error("Couldn't link shader: " + gl.getProgramInfoLog(program));
	}
	programCache.push({vShader:vShader,fShader:fShader,program:program});
	if(!program.uniformDetails){
		program.uniformDetails={};
		var uniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
		for (var i=0;i<uniforms;++i) {
			var info=gl.getActiveUniform(program, i);
			program.uniformDetails[info.name]={loc:GLGE.getUniformLocation(gl,program,info.name),info:info};
		}
	}
	return program;
}


/**
* function to cache the uniform locations
* @param {glcontext} the gl context of the program
* @param {program} the shader program
* @param {string} the uniform name
* @private
*/
GLGE.getUniformLocation=function(gl,program, uniform){
	/*if(program.uniformDetails[uniform]){
		return program.uniformDetails[uniform].loc;
	}else{
		return gl.getUniformLocation(program, uniform);
	}*/
	if(!program.uniformCache) program.uniformCache={};
	if(!program.uniformChecked) program.uniformChecked={};
	if(!program.uniformChecked[uniform]){
		program.uniformCache[u