protected float[] FindLimitsOneLine() {
float x1 = FindLimitsPoint(leftWall);
if (lineStatus == LINE_STATUS_OFFLIMITS || lineStatus == LINE_STATUS_NOLINE)
return null;
float x2 = FindLimitsPoint(rightWall);
if (lineStatus == LINE_STATUS_NOLINE)
return null;
return new float[]{x1, x2};
}