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  contributors may be used to endorse or promote products derived from this
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</copyright> */

/* Base class for the 3D translate tools
Subclass TranslateObject3DTool will translate the object that was clicked.
*/
var Montage = require("montage/core/core").Montage,
    ModifierToolBase = require("js/tools/modifier-tool-base").ModifierToolBase,
    toolHandleModule = require("js/stage/tool-handle"),
    viewUtils = require("js/helper-classes/3D/view-utils").ViewUtils,
    vecUtils = require("js/helper-classes/3D/vec-utils").VecUtils,
    drawUtils = require("js/helper-classes/3D/draw-utils").DrawUtils,
    ElementsMediator = require("js/mediators/element-mediator").ElementMediator;

exports.Translate3DToolBase = Montage.create(ModifierToolBase,
{
    _inLocalMode: { value: true, enumerable: true },
    _clickedOnStage: { value: false },

    HandleDoubleClick : {
       value : function() {
       }
    },

    modifyElements : {
        value : function(data, event)
        {
            //console.log( "modifyElements, data: " + data.pt0 + " => " + data.pt1 );

            // form the translation vector and post translate the matrix by it.
            var delta = vecUtils.vecSubtract( 3, data.pt1, data.pt0 );
            if(this._handleMode !== null)
            {
                switch(this._handleMode)
                {
                    case 0:
                        delta[1] = 0;
                        delta[2] = 0;
                        break;
                    case 1:
                        delta[0] = 0;
                        delta[2] = 0;
                        break;
                    case 2:
                        delta[0] = 0;
                        delta[1] = 0;
                        break;
                }
                if( (this.application.ninja.selectedElements.length > 1) && this._clickedOnStage )
                {
                    this._delta = ~~(delta[this._handleMode]);
                }
                else
                {
                    this._delta += ~~(delta[this._handleMode]);
                }

            }
            else
            {
                if(this._mode === 1)
                {
                    delta[2] = delta[1];
                    delta[0] = 0;
                    delta[1] = 0;
                }
                this._delta = delta.slice(0);
            }

            //console.log( "modifyElements delta: " + delta );
            var transMat = Matrix.Translation( delta );

            //console.log( "Translate: " + delta );
            if(this._inLocalMode && (this.application.ninja.selectedElements.length === 1) )
            {
                this._translateLocally(transMat);
            }
            else
            {
                this._translateGlobally(transMat);
            }
        }
    },


    Reset: {
        value: function() {
            var mat, iMat, dist, mod3dObject = [], self = this;

            this.application.ninja.selectedElements.forEach(function(element) {
                // Reset to the identity matrix
                //item = this.application.ninja.selectedElements[i];
                iMat = Matrix.I(4);
                mat = ElementsMediator.getMatrix(element);
                mat[12] = 0;
                mat[13] = 0;
                mat[14] = 0;

                dist = ElementsMediator.getPerspectiveDist(element);

                var previousStyleStr = {dist:dist, mat:element.elementModel.getProperty("mat")};
                var newStyleStr = {dist:dist, mat:iMat};

                mod3dObject.push({element:element, properties:newStyleStr, previousProperties: previousStyleStr});
            });

            ElementsMediator.set3DProperties(mod3dObject, "Change", "rotateTool");

            this.isDrawing = false;
            this.endDraw(event);

            // Need to force stage to draw immediately so the new selection center is calculated
            this.application.ninja.stage.draw();
            // And captureSelectionDrawn to draw the transform handles
            this.captureSelectionDrawn(null);
        }
    },

    // We will only translate single elements locally
    _translateLocally: {
        value: function (transMat) {
            //console.log( "_translateLocally, startMat: " + this._startMat );
            //console.log( "_translateLocally, transMat: " + transMat );
            //console.log( "_translateLocally, startMat: " + this._startMat + ", transMat: " + transMat );
            var mat = glmat4.multiply(this._startMat, transMat, []);
            viewUtils.setMatrixForElement( this._target, mat, true );
            if(this._mode !== 1)
            {
                this._startMat = mat;
            }
        }
    },

    _translateGlobally: {
        value: function (transMat) {
            //console.log( "_translateGlobally, transMat: " + transMat );
            var selectedElements = this.application.ninja.selectedElements;

            var len = selectedElements.length,
                self = this,
                target = selectedElements[0],
                curMat = viewUtils.getMatrixFromElement( target ),
                matInv = glmat4.inverse(this._startMat, []),
                nMat = glmat4.multiply(transMat, this._startMat, [] );
//              qMat = glmat4.multiply(matInv, nMat, []);

            if(this._mode === 1) {
                if (len > 1)  curMat = target.elementModel.getProperty("mat").slice();
                var curInv = glmat4.inverse( curMat, [] );
                transMat = glmat4.multiply( nMat, curInv, [] );
            }

            var shouldUpdateStartMat = true;

            if(this._clickedOnStage || ((this._handleMode === 2) && (len > 1)))
            {
                shouldUpdateStartMat = false;
            }
            else if(this._mode !== 1)
            {
                this._startMat = nMat;
            }

            selectedElements.forEach(function(element) {
                curMat = element.elementModel.getProperty("mat").slice(0);

//                glmat4.multiply(curMat, qMat, curMat);
//                viewUtils.setMatrixForElement( elt, curMat, true);
                curMat[12] += transMat[12];
                curMat[13] += transMat[13];
                curMat[14] += transMat[14];

                viewUtils.setMatrixForElement(element, curMat, true);

                if(shouldUpdateStartMat) {
                    //console.log(  "\t\tshouldUpdateStartMat" );
                    element.elementModel.setProperty("mat", curMat);
                }

            });
        }
    },

    _updateTargets: {
        value: function(addToUndo) {
            var mod3dObject = [], self = this;

            this.application.ninja.selectedElements.forEach(function(element) {
                if(addToUndo) {
                    var previousMat = element.elementModel.getProperty("mat").slice(0);
                    var previousStyleStr = {dist:element.elementModel.getProperty("dist"), mat:MathUtils.scientificToDecimal(previousMat, 5)};
                    var newStyleStr = {dist:viewUtils.getPerspectiveDistFromElement(element), mat:MathUtils.scientificToDecimal(viewUtils.getMatrixFromElement(element), 5)};

                    mod3dObject.push({element:element, properties:newStyleStr, previousProperties: previousStyleStr});

                }
            });

            if(addToUndo) {
                ElementsMediator.set3DProperties(mod3dObject, "Change", "translateTool");

                if(this._origin && this._delta) {
                    if(this._handleMode !== null) {
                        this._origin[this._handleMode] += this._delta;
                    } else {
                        this._origin[0] += this._delta[0];
                        this._origin[1] += this._delta[1];
                    }
                }

                this._delta = null;
            }

            this.application.ninja.selectedElements.forEach(function(element) {
                element.elementModel.setProperty("mat", viewUtils.getMatrixFromElement(element));
                element.elementModel.setProperty("dist", viewUtils.getPerspectiveDistFromElement(element));
            });

        }
    },

    HandleAltKeyDown: {
        value: function(event) {
            this._inLocalMode = !this._inLocalMode;
            this.DrawHandles();
        }
    },

    HandleAltKeyUp: {
        value: function(event) {
            this._inLocalMode = !this._inLocalMode;
            this.DrawHandles();
        }
    },

    handleScroll: {
        value: function(event) {
            this.captureSelectionDrawn(null);
        }
    },

    _updateHandlesOrigin: {
        value: function () {
            var ctr;

            var len = this.application.ninja.selectedElements.length;
            if(len > 0)
            {
                if(len === 1)
                {
                    var item = this._target;
                    viewUtils.pushViewportObj( item );
                    ctr = viewUtils.getCenterOfProjection();
                    viewUtils.popViewportObj();
                    ctr[2] = 0;

                    this._origin = viewUtils.localToGlobal(ctr, item);
                }
                else
                {
                    this._origin = undefined;
                    this._origin = this.calculateMultiSelOrigin();
                }
            }
        }
    },

    captureSelectionDrawn: {
        value: function(event){
            this._origin = null;
            this._startOriginArray = null;

            var len = this.application.ninja.selectedElements.length;
            if(len) {
                if(len === 1) {
                    this.target = this.application.ninja.selectedElements[0];

                    viewUtils.pushViewportObj( this.target );
                    var eltCtr = viewUtils.getCenterOfProjection();
                    eltCtr[2] = 0;
                    viewUtils.popViewportObj();

                    var ctrOffset = this.target.elementModel.props3D.m_transformCtr;
                    if(ctrOffset) {
                        eltCtr[2] = 0;
                        eltCtr = vecUtils.vecAdd(3, eltCtr, ctrOffset);
                    }

                    this._origin = viewUtils.localToGlobal(eltCtr, this.target);
//                  console.log( "Rotate3DToolBase.captureSelectionDrawn _origin: " + this._origin );
                    this._updateTargets();
                    //this._setTransformOrigin(false);
                }
                else {
                    this.target = this.application.ninja.currentDocument.model.documentRoot;
                    //this._origin = drawUtils._selectionCtr.slice(0);
                    //this._origin[0] += this.application.ninja.stage.userContentLeft;
                    //this._origin[1] += this.application.ninja.stage.userContentTop;
                    this._updateTargets();
                    this._origin = this.calculateMultiSelOrigin();
                    //this._setTransformOrigin(true);
                }
            }
            else {
                this.target = null;
            }
            this.DrawHandles();

            if(event)
            {
                this.eventManager.removeEventListener("selectionDrawn", this, true);
            }
        }
    },

    calculateMultiSelOrigin:
    {
        value: function()
        {
            var minPt,  maxPt, i,j;
            this._startOriginArray = [];
            var len = this.application.ninja.selectedElements.length;
            for (i = 0; i < len; i++)
            {
                // get the next element and localToGlobal matrix
                var elt = this.application.ninja.selectedElements[i];
                var l2g = elt.elementModel.getProperty("l2g");

                // get the element bounds in 'plane' space
                var bounds = viewUtils.getElementViewBounds3D( elt );
                for (j=0;  j<4;  j++)
                {
                    var localPt = bounds[j];
                    //var pt = MathUtils.transformAndDivideHomogeneousPoint( localPt, l2g );
                    var pt = viewUtils.localToStageWorld( localPt, elt );
                    if (!minPt)
                    {
                        minPt = pt.slice();
                        maxPt = pt.slice();
                    }
                    else
                    {
                        minPt[0] = Math.min(minPt[0],pt[0]);  minPt[1] = Math.min(minPt[1],pt[1]);  minPt[2] = Math.min(minPt[2],pt[2]);
                        maxPt[0] = Math.max(maxPt[0],pt[0]);  maxPt[1] = Math.max(maxPt[1],pt[1]);  maxPt[2] = Math.max(maxPt[2],pt[2]);
                    }
                }
            }
            var stageWorldCtr = [ 0.5*(minPt[0] + maxPt[0]),  0.5*(minPt[1] + maxPt[1]), 0.5*(minPt[2] + maxPt[2]) ];
            var globalCtr = MathUtils.transformAndDivideHomogeneousPoint( stageWorldCtr, viewUtils.getStageWorldToGlobalMatrix() );
//          console.log( "resetting _origin to: " + this._origin );

            return globalCtr;
        }
    },


    DrawHandles: {
        value: function (delta) {
            this.application.ninja.stage.clearDrawingCanvas();

            if(!this._handles)
            {
                this._handles = [];

                // TODO - Using dummy cursors for now

                // translateX
                var rX = toolHandleModule.TranslateHandle.create();
                rX.init("url('images/cursors/Translate_X.png') 0 0, default", 'rgba(255,0,0,1)', "x");
                this._handles.push(rX);

                // translateY
                var rY = toolHandleModule.TranslateHandle.create();
                rY.init("url('images/cursors/Translate_Y.png') 0 0, default", 'rgba(0,255,0,1)', "y");
                this._handles.push(rY);

                // translateZ
                var rZ = toolHandleModule.TranslateHandle.create();
                rZ.init("url('images/cursors/Translate_Z.png') 0 0, default", 'rgba(0,0,255,1)', "z");
                this._handles.push(rZ);
            }

            var item = this._target;
            if(!item)
            {
                return;
            }

            // Draw tool handles

            this._updateHandlesOrigin();
            var base = this._origin.slice(0);

//          if (this.isDrawing)
//              console.log( "handle origin: " + base );

            var len = this.application.ninja.selectedElements.length;
            var lMode = this._inLocalMode;
            if(len === 1)
            {
                viewUtils.pushViewportObj( item );
            }
            else
            {
                lMode = false;
                viewUtils.pushViewportObj( this.application.ninja.currentDocument.model.documentRoot );
            }

            if(this._handleMode !== null)
            {
                switch(this._handleMode)
                {
                    case 0:
                        this._handles[1]._strokeStyle = 'rgba(0, 255, 0, 0.2)';
                        this._handles[2]._strokeStyle = 'rgba(0, 0, 255, 0.2)';
                        break;
                    case 1:
                        this._handles[0]._strokeStyle = 'rgba(255, 0, 0, 0.2)';
                        this._handles[2]._strokeStyle = 'rgba(0, 0, 255, 0.2)';
                        break;
                    case 2:
                        this._handles[0]._strokeStyle = 'rgba(255, 0, 0, 0.2)';
                        this._handles[1]._strokeStyle = 'rgba(0, 255, 0, 0.2)';
                        break;
                }
                if( delta && (len > 1) )
                {
                    base[this._handleMode] += ~~delta;
                }
            }
            this._handles[0].draw(base, item, lMode);
            this._handles[1].draw(base, item, lMode);
            this._handles[2].draw(base, item, lMode);

            if(delta && (this._handleMode !== null))
            {
                this._handles[this._handleMode].drawDelta(~~delta);
            }

            this._handles[0]._strokeStyle = 'rgba(255, 0, 0, 1)';
            this._handles[1]._strokeStyle = 'rgba(0, 255, 0, 1)';
            this._handles[2]._strokeStyle = 'rgba(0, 0, 255, 1)';

            viewUtils.popViewportObj();
        }
    }

});