clip polygonbug

[eyworldwide]

in renderPolygon method of the canvasRender class:

    // clip of poly if all vertices have been marked for clipping
    var clippoly = 1;
    for (var i=0; i<vertices.length; i++) {
        // console.log(clip)
        clippoly &= clip[vertices[i]];
    }
    if (clippoly) return;

there are cases that all vertices have been marked but still be visible in the canvas:

I think it's a hack that i add the condition whether 4 corners of canvas are in the current path or not:

        // HACK: all vertices have been marked but still be visible nearby the 4 corners of the canvas
        var width = this.canvas.width;
        var height = this.canvas.height;
        if(ctx.isPointInPath(0, 0) || ctx.isPointInPath(0, height)
             || ctx.isPointInPath(width, 0) || ctx.isPointInPath(width, height)){
            clippoly = 0;
        }
        if (clippoly) return;

do you have some more elegant solutions?