source: main/trunk/model-sites-dev/von-sparql/js/von-sparql-venn.js@ 28914

var pathArray = new Array();
var pathCollectionNames = new Array();
var dragCircle = false;
var pallete = [30,60,90,120,150,180,210,240,270,300,330,360];

this.updateCircle = function(side){
    var quer = new ComparisonQuery();
    var newColor;
    var oldColor = -1;
    var index = 0;
    if(side == "right")
        index = 1;

    if(typeof(pathArray[index])!="undefined"){
        oldColor = pathArray[index].fillColor.hue;
        pathArray[index].remove();
    }

    pathArray[index] = new Path.Circle(new Point(70 + (index) * 70,70),50);
    pathArray[index].strokeColor = 'black';
    newColor = pallete[Math.floor(Math.random()*pallete.length)];   
    pallete.splice(pallete.indexOf(newColor),1);
    if(oldColor!=-1) 
        pallete.push(oldColor);

    pathArray[index].fillColor = {
        hue: newColor,
        saturation: 5,
        brightness: 1
    };
    pathArray[index].blendMode = 'darken';
    pathArray[index].opacity = .7;
    if(side == "left")
        pathCollectionNames[index] = (leftCollection);
    else if(side == "right")
        pathCollectionNames[index] = (rightCollection);

    return pathArray[index].fillColor.toCSS();
}
function onMouseDrag(event) {
    if(dragCircle==true && event.item!=null)
        event.item.position=event.point;
};

function onMouseDown(event){
    if(!dragCircle){
        //Add circle where clicked
        var s = new Path.Circle(event.point, 4,'#43ae0c');
        s.fillColor = '#000000';
        s.removeOnDown();

        var mousePos = event.point;
        var IndicesUnder = new Array();

        //Loop through circles to see which are under mouse
        for(var i=0; i < pathArray.length; i++){
            if(typeof(pathArray[i])!="undefined"){
                var circlePos = pathArray[i].position;
                var circleRadius = pathArray[i].bounds.width/2;
                var diff = distance(mousePos, circlePos);

                //If circle was clicked on
                if(diff < circleRadius)
                    IndicesUnder.push(i);
            }
        }
        if(IndicesUnder.length==2){
                comparisonQuery.type = "intersection";
                comparisonQuery.datasetSelection = "";
        }
        else if(IndicesUnder.length==1){
                comparisonQuery.type = "minus";
                comparisonQuery.datasetSelection = pathCollectionNames[IndicesUnder[0]];
        }
        if(IndicesUnder.length>0) 
            drawComparisonTable();
    }
    //If dragging a circle
    //Move circle to top of active layer
    else
        project.activeLayer.appendTop(event.item);
}
function distance(p1, p2){
    return Math.sqrt(Math.pow((p1.x - p2.x),2)+Math.pow((p1.y - p2.y),2));
}
function onKeyDown(event) {
    if(event.key == 'control')
        dragCircle=true;
}

function onKeyUp(event) {
    if(event.key == 'control')
        dragCircle=false;
}