Method makeShapeFromArray

ij/src/main/java/ij/gui/ShapeRoi.java:355–385

Constructs a GeneralPath from a float array of segment type+coordinates for each segment. The resulting GeneralPath has winding rule WIND_EVEN_ODD, which is appropriate for closed shapes

(float[] array)

	/** Constructs a GeneralPath from a float array of segment type+coordinates for each segment. 
	 *  The resulting GeneralPath has winding rule WIND_EVEN_ODD, which is appropriate for closed shapes */
	static GeneralPath makeShapeFromArray(float[] array) {
		if(array==null) return null;
		GeneralPath s = new GeneralPath(GeneralPath.WIND_EVEN_ODD);
		int index=0;
		float[] seg = new float[7];
		while (true) {
			//if(index<array.length)IJ.log(index+" type="+array[index]);
			index = getSegment(array, seg, index);
			if (index<0) break;
			int type = (int)seg[0];
			switch(type) {
				case PathIterator.SEG_MOVETO:
					((GeneralPath)s).moveTo(seg[1], seg[2]);
					break;
				case PathIterator.SEG_LINETO:
					((GeneralPath)s).lineTo(seg[1], seg[2]);
					break;
				case PathIterator.SEG_QUADTO:
					((GeneralPath)s).quadTo(seg[1], seg[2],seg[3], seg[4]);
					break;
				case PathIterator.SEG_CUBICTO:
					((GeneralPath)s).curveTo(seg[1], seg[2], seg[3], seg[4], seg[5], seg[6]);
					break;
				case PathIterator.SEG_CLOSE:
					((GeneralPath)s).closePath();
					break;
				default: break;
			}
		}
		return s;
	}

	/** Reads the data of a segment from an array describing the shape at as in a PathIterator. Reading starts at 'index'.
	 *  The position in the array for the next segment is returned, -1 if the array ends.