three.proton/src/zone/LineZone.js

three.Proton is an easily customizable html5 particle engine for three.js

(function(Proton, undefined) {
    /**
     * LineZone is a 3d line zone
     * @param {Number|Vector3D} x1 - the line's start point of x value or a Vector3D Object
     * @param {Number|Vector3D} y1 - the line's start point of y value or a Vector3D Object
     * @param {Number} z1 - the line's start point of z value 
     * @param {Number} x2 - the line's end point of x value 
     * @param {Number} y2 - the line's end point of y value 
     * @param {Number} z2 - the line's end point of z value 
     * @example 
     * var lineZone = new Proton.LineZone(0,0,0,100,100,0);
     * or
     * var lineZone = new Proton.LineZone(new Proton.Vector3D(0,0,0),new Proton.Vector3D(100,100,0));
     * @extends {Zone}
     * @constructor
     */
    function LineZone(x1, y1, z1, x2, y2, z2) {
        LineZone._super_.call(this);
        if (x1 instanceof Proton.Vector3D) {
            this.x1 = x1.x;
            this.y1 = x1.y;
            this.z1 = x1.z;

            this.x2 = x2.x;
            this.y2 = x2.y;
            this.z2 = x2.z;
        } else {
            this.x1 = x1;
            this.y1 = y1;
            this.z1 = z1;

            this.x2 = x2;
            this.y2 = y2;
            this.z2 = z2;
        }
    }


    Proton.Util.inherits(LineZone, Proton.Zone);
    LineZone.prototype.getPosition = function() {
        this.random = Math.random();
        this.vector.x = this.x1 + this.random * (this.x2 - this.x1);
        this.vector.y = this.y1 + this.random * (this.y2 - this.y1);
        this.vector.z = this.z1 + this.random * (this.z2 - this.z1);
        return this.vector;
    }

    LineZone.prototype.crossing = function(particle) {
        if (this.log) {
            console.error('Sorry LineZone does not support crossing method');
            this.log = false;
        }
    }

    Proton.LineZone = LineZone;
})(Proton);