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} else if (spiralStaircaseAngle <= Math.PI) {
   float width = (1 - cosAngle) * spiralStairOuterRadius;
   float height = spiralStairOuterRadius + treadDelta;
   cutOutShape = "M 1," + (height - treadDelta) / height
        + " A " + spiralStairOuterRadius / width + "," + (height - treadDelta) / height + " 1 0,0 0," + (1 - sinAngle)
        + " L " + cosAngle * (spiralStairInnerRadius - spiralStairOuterRadius) / width + "," + (spiralStairOuterRadius - sinAngle * spiralStairInnerRadius) / height
        + " A " + spiralStairInnerRadius / width + "," + spiralStairInnerRadius / height + " 1 0,1 " 
           + -cosAngle * (spiralStairOuterRadius + spiralStairInnerRadius) / width + "," + (height - treadDelta) / height
        + " z";