/* <copyright>
Copyright (c) 2012, Motorola Mobility, Inc
All Rights Reserved.
BSD License.

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 Motorola Mobility 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 THE COPYRIGHT OWNER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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</copyright> */

var PulseMaterial = require("js/lib/rdge/materials/pulse-material").PulseMaterial;
var Texture = require("js/lib/rdge/texture").Texture;

var DeformMaterial = function DeformMaterial() {
    ///////////////////////////////////////////////////////////////////////
    // Instance variables
    ///////////////////////////////////////////////////////////////////////
    this._name = "Deform";
    this._shaderName = "deform";

    this._defaultTexMap = 'assets/images/rocky-normal.jpg';

    this._time = 0.0;
    this._dTime = 0.01;

    // array textures indexed by shader uniform name
    this._glTextures = [];

    ///////////////////////////////////////////////////////////////////////
    // Properties
    ///////////////////////////////////////////////////////////////////////
    // all defined in parent PulseMaterial.js
    // load the local default value
    var u_tex0_index    = 0;
    this._propNames         = ["u_tex0",        "u_speed" ];
    this._propLabels        = ["Texture map",   "Speed" ];
    this._propTypes         = ["file",          "float" ];
    this._propValues        = [];
    this._propValues[this._propNames[0]] = this._defaultTexMap.slice(0);
    this._propValues[this._propNames[1]] = 1.0;

    this._propValues[ this._propNames[  u_tex0_index] ] = this._defaultTexMap.slice(0);

    ///////////////////////////////////////////////////////////////////////
    // Material Property Accessors
    ///////////////////////////////////////////////////////////////////////
    this.isAnimated         = function()            {  return true;     };
    this.getShaderDef       = function()            {  return pulseMaterialDef; }

    ///////////////////////////////////////////////////////////////////////


    ///////////////////////////////////////////////////////////////////////
    // Methods
    ///////////////////////////////////////////////////////////////////////
    // duplcate method requirde

    this.init = function (world) {
        // save the world
        if (world) this.setWorld(world);

        // set up the shader
        this._shader = new RDGE.jshader();
        this._shader.def = deformMaterialDef;
        this._shader.init();

        // set up the material node
        this._materialNode = RDGE.createMaterialNode("deformMaterial" + "_" + world.generateUniqueNodeID());
        this._materialNode.setShader(this._shader);

        this._time = 0;
        if (this._shader && this._shader['default']) {
            this._shader['default'].u_time.set([this._time]);
        }

        // set the shader values in the shader
        this.setShaderValues();
        this.setResolution([world.getViewportWidth(), world.getViewportHeight()]);
        this.update(0);
    };

	this.resetToDefault = function()
	{
		this._propValues[this._propNames[0]] = this._defaultTexMap.slice(0);
		this._propValues[this._propNames[1]] = 1.0;
	
		var nProps = this._propNames.length;
		for (var i=0; i<nProps;  i++)
			this.setProperty( this._propNames[i],  this._propValues[this._propNames[i]]  );
	};
};

///////////////////////////////////////////////////////////////////////////////////////
// RDGE shader

// shader spec (can also be loaded from a .JSON file, or constructed at runtime)
var deformMaterialDef =
{'shaders':
    {
        'defaultVShader':"assets/shaders/Basic.vert.glsl",
        'defaultFShader':"assets/shaders/Deform.frag.glsl"
    },
    'techniques':
    {
        'default':
        [
            {
                'vshader' : 'defaultVShader',
                'fshader' : 'defaultFShader',
                // attributes
                'attributes' :
                {
                    'vert'  :   { 'type' : 'vec3' },
                    'normal' :  { 'type' : 'vec3' },
                    'texcoord'  :   { 'type' : 'vec2' }
                },
                // parameters
                'params' :
                {
                    'u_tex0': { 'type' : 'tex2d' },
                    'u_time' : { 'type' : 'float' },
                    'u_speed' : { 'type' : 'float' },
                    'u_resolution'  :   { 'type' : 'vec2' }
                },

                // render states
                'states' :
                {
                    'depthEnable' : true,
                    'offset':[1.0, 0.1]
                }
            }
        ]
    }
};

DeformMaterial.prototype = new PulseMaterial();

if (typeof exports === "object") {
    exports.DeformMaterial = DeformMaterial;
}