/* <copyright>
This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
(c) Copyright 2011 Motorola Mobility, Inc.  All Rights Reserved.
</copyright> */

///////////////////////////////////////////////////////////////////////
// Class GLGeomObj
//      Super class for all geometry classes
///////////////////////////////////////////////////////////////////////
function GLGeomObj()
{
    ///////////////////////////////////////////////////////////////////////
    // Constants
    ///////////////////////////////////////////////////////////////////////
	this.GEOM_TYPE_RECTANGLE		=  1;
	this.GEOM_TYPE_CIRCLE			=  2;
	this.GEOM_TYPE_LINE             =  3;
	this.GEOM_TYPE_PATH			    =  4;
	this.GEOM_TYPE_CUBIC_BEZIER     =  5;
	this.GEOM_TYPE_UNDEFINED		= -1;

    // Needed for calculating dashed/dotted strokes
    this.DASH_LENGTH = 0.15;
    this.DOT_LENGTH = 0.05;
    this.GAP_LENGTH = 0.05;
	
    ///////////////////////////////////////////////////////////////////////
    // Instance variables
    ///////////////////////////////////////////////////////////////////////
    this._matrix = Matrix.I(4);

    this._next = undefined;
    this._prev = undefined;
    this._child = undefined;
    this._parent = undefined;

    this.m_world = null;

    // stroke and fill colors
    this._strokeColor;
    this._fillColor;

	// stroke and fill materials
	this._fillMaterial;
	this._strokeMaterial;

	// array of primitives - used in RDGE
	this._primArray = [];
	this._materialNodeArray = [];
	this._materialArray = [];
	this._materialTypeArray = [];

	// the transform node used by RDGE
	this._trNode = null;


    ///////////////////////////////////////////////////////////////////////
    // Property accessors
    ///////////////////////////////////////////////////////////////////////
    this.setWorld       = function( world )     {  this.m_world = world;        }
    this.getWorld       = function()            {  return this.m_world;         }

	this.getMatrix		= function()			{  return this._matrix.slice(0);	}
	this.setMatrix		= function(m)			{  this._matrix = m.slice(0);		}

    this.setNext     = function( next )          {  this._next = next;       }
    this.getNext     = function()                {  return this._next;       }
    this.setPrev     = function( prev )          {  this._prev = prev;       }
    this.getPrev     = function()                {  return this._prev;       }
    this.setChild    = function( child )         {  this._child = child;     }
    this.getChild    = function()                {  return this._child;      }
    this.setParent   = function( parent )        {  this._parent = parent;   }
    this.getParent   = function()                {  return this._parent;     }

	this.geomType	= function()				 {  return this.GEOM_TYPE_UNDEFINED;	}

	this.getPrimitiveArray		= function()		{  return this._primArray;				}
	this.getMaterialNodeArray	= function()		{  return this._materialNodeArray;		}
	this.getMaterialArray		= function()		{  return this._materialArray;			}

	this.getTransformNode		= function()		{  return this._trNode;					}
	this.setTransformNode		= function(t)		{  this._trNode = t;					}

    ///////////////////////////////////////////////////////////////////////
    // Methods
    ///////////////////////////////////////////////////////////////////////
	this.setMaterialColor   = function(c, type)
	{
		if (type == "fill")
			this._fillColor = c.slice(0);
		else
			this._strokeColor = c.slice(0);
		if (this._materialArray && this._materialTypeArray)
		{
			var nMats = this._materialArray.length;
			if (nMats === this._materialTypeArray.length)
			{
				for (var i=0;  i<nMats;  i++)
				{
					if (this._materialTypeArray[i] == type)
						this._materialArray[i].setProperty( "color", c.slice(0) );
				}
			}
		}
	}

	this.setFillColor   = function(c)		{  this.setMaterialColor(c, "fill");		}
	this.setStrokeColor = function(c)		{  this.setMaterialColor(c, "stroke");		}

    this.makeStrokeMaterial = function()
    {
        var strokeMaterial;
        if (this.getStrokeMaterial())
            strokeMaterial = this.getStrokeMaterial().dup();
        else
            strokeMaterial = new FlatMaterial();

        if (strokeMaterial)
        {
            strokeMaterial.init( this.getWorld() );
            if(this._strokeColor)
             {
                strokeMaterial.setProperty("color", this._strokeColor);
            }
        }

        this._materialArray.push( strokeMaterial );
        this._materialTypeArray.push( "stroke" );

        return strokeMaterial;
    }

    this.makeFillMaterial = function()
    {
        var fillMaterial;
        if (this.getFillMaterial())
            fillMaterial = this.getFillMaterial().dup();
        else
            fillMaterial = new FlatMaterial();

        if (fillMaterial)
        {
            fillMaterial.init( this.getWorld() );
            //if(!this.getFillMaterial() && this._fillColor)
            if (this._fillColor)
            {
                fillMaterial.setProperty("color", this._fillColor);
            }
        }

        this._materialArray.push( fillMaterial );
        this._materialTypeArray.push( "fill" );

        return fillMaterial;
    }


    this.translate   = function(v)
    {
        var mat = Matrix.Translation( v );
        //var mat2 = mat.multiply( this._matrix );
        //this._matrix = mat2;
		glmat4.multiply(mat, this._matrix, this._matrix);
    }

    this.transform  = function( mat )
    {
        if (mat)
		{
            //this._matrix = mat.multiply( this._matrix );
			glmat4.multiply(mat, this._matrix, this._matrix);
		}
    }

    this.setMatrix  = function(mat)
    {
        var gl = this.getWorld().getGLContext();
        if (gl)
        {
            gl.uniformMatrix4fv(this.getWorld().getShaderProgram().mvMatrixUniform, false, new Float32Array(mat));
        }
    }

    this.buildBuffers = function()
    {
        // this function must be overridden by the base class
        alert( "GLGeomObj.buildBuffers must be overridden by base class" );
    }

    this.render = function()
    {
        alert( "GLGeomObj.render method must be overridden by sub class" );
    }

    this.collidesWithPoint = function( x, y )
    {
        alert( "GLGeomObj.collidesWithPoint method must be overridden by sub class" );
    }


    this.getNearPoint = function( pt, dir )
    {
		// the alert is not displayed.  Objects may choose not to implement this method.
        //alert( "GLGeomObj.getNearPoint method must be overridden by sub class" );
    }

	this.getNearVertex = function( pt, dir )
	{
		// this should be overridden by objects (such as rectangles) that have corners
	}

    this.containsPoint = function( pt, dir )
    {
		// the alert is not displayed.  Objects may choose not to implement this method.
        //alert( "GLGeomObj.containsPoint method must be overridden by sub class" );
    }

	this.getPropertyFromString = function( prop, str )
	{
		var index = str.indexOf( prop );
		if (index < 0)  throw new Error( "property " + prop + " not found in string: " + str);

		var rtnStr = str.substr( index+prop.length );
		index = rtnStr.indexOf( "\n" );
		if (index >= 0)
			rtnStr = rtnStr.substr(0, index);

		return rtnStr;
	}

    this.export = function()
    {
		var rtnStr;

		/*
		var matNodeArr = this.getMaterialNodeArray();
		if (matNodeArr)
		{
			var nMats = matNodeArr.length;
			if (nMats > 0)
			{
				for (var i=0;  i<nMats;  i++)
				{
					var trNode = this.getWorld().findTransformNodeByMaterial( matNodeArr[i] );
					if (trNode)
					{
						var meshNode = trNode.transformNode.meshes[i];
						if (meshNode)
						{
							var matNode = trNode.transformNode.materialNode;
							if (matNode)
							{
								if (!rtnStr)
									rtnStr = "type: " + this.geomType() + "\n";

								var jsonMeshText = JSON.stringify( meshNode );

								rtnStr += "mesh: " + jsonMeshText + "endMesh\n";

								//var jsonMatDef = JSON.parse( matNode.shaderProgram.exportShader() );
								var jsonMatText = matNode.shaderProgram.exportShader();
								rtnStr += "material: " + jsonMatText + "endMat\n";
							}
						}
					}
				}
			}
		}
		*/

		return rtnStr;
    }
}