constructor (showEdges, edgeColor, edgeThreshold)
    {
        this.showEdges = showEdges;
        this.edgeColor = edgeColor;
        this.edgeThreshold = edgeThreshold;
    }
@param {boolean} showEdges Show edges.
@param {RGBColor} edgeColor Color of the edges.
@param {number} edgeThreshold Minimum angle between faces to show edges between them in.
The value must be in degrees.