fix dce adding spurious closing vertex

Author: micycle1

src/main/java/micycle/pgs/PGS_Transformation.java

@@ -486,7 +486,7 @@ public static PShape align(PShape alignShape, PShape baseShape, double alignment
 		}
 
 		// both shapes need same vertex quantity
-		final int vertices = Math.min(alignShape.getVertexCount(), baseShape.getVertexCount()) - 1;
+		final int vertices = Math.min(alignShape.getVertexCount(), baseShape.getVertexCount());
 		PShape sourceShapeT = alignShape;
 		PShape transformShapeT = baseShape;
 		if (alignShape.getVertexCount() > vertices) {

src/main/java/micycle/pgs/commons/DiscreteCurveEvolution.java

@@ -97,7 +97,12 @@ public interface DCETerminationCallback {
 	 */
 	public static Coordinate[] process(LineString lineString, DCETerminationCallback terminationCallback) {
 		final boolean closed = lineString.isClosed();
-		final Coordinate[] coords = lineString.getCoordinates();
+		Coordinate[] coords = lineString.getCoordinates();
+		if (closed && coords.length > 2) {
+			Coordinate[] newCoords = new Coordinate[coords.length - 1];
+			System.arraycopy(coords, 0, newCoords, 0, coords.length - 1);
+			coords = newCoords;
+		}
 
 		/*
 		 * Initialise kinks (initially unlinked to each other), then link each one to