这是可行的（我相信在所有情况下），但可能需要进行更彻底的测试：
Area area; // The value is set elsewhere in the pre ArrayList<double[]> areaPoints = new ArrayList<double[]>();ArrayList<Line2D.Double> areaSegments = new ArrayList<Line2D.Double>();double[] coords = new double[6];for (PathIterator pi = area.getPathIterator(null); !pi.isDone(); pi.next()) { // The type will be SEG_LINETO, SEG_MOVETO, or SEG_CLOSE // Because the Area is composed of straight lines int type = pi.currentSegment(coords); // We record a double array of {segment type, x coord, y coord} double[] pathIteratorCoords = {type, coords[0], coords[1]}; areaPoints.add(pathIteratorCoords);}double[] start = new double[3]; // To record where each polygon startsfor (int i = 0; i < areaPoints.size(); i++) { // If we're not on the last point, return a line from this point to the next double[] currentElement = areaPoints.get(i); // We need a default value in case we've reached the end of the ArrayList double[] nextElement = {-1, -1, -1}; if (i < areaPoints.size() - 1) { nextElement = areaPoints.get(i + 1); } // Make the lines if (currentElement[0] == PathIterator.SEG_MOVETO) { start = currentElement; // Record where the polygon started to close it later } if (nextElement[0] == PathIterator.SEG_LINETO) { areaSegments.add( new Line2D.Double( currentElement[1], currentElement[2], nextElement[1], nextElement[2] ) ); } else if (nextElement[0] == PathIterator.SEG_CLOSE) { areaSegments.add( new Line2D.Double( currentElement[1], currentElement[2], start[1], start[2] ) ); }}// areaSegments now contains all the line segments
