01:
02: /*
03: * The JTS Topology Suite is a collection of Java classes that
04: * implement the fundamental operations required to validate a given
05: * geo-spatial data set to a known topological specification.
06: *
07: * Copyright (C) 2001 Vivid Solutions
08: *
09: * This library is free software; you can redistribute it and/or
10: * modify it under the terms of the GNU Lesser General Public
11: * License as published by the Free Software Foundation; either
12: * version 2.1 of the License, or (at your option) any later version.
13: *
14: * This library is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17: * Lesser General Public License for more details.
18: *
19: * You should have received a copy of the GNU Lesser General Public
20: * License along with this library; if not, write to the Free Software
21: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22: *
23: * For more information, contact:
24: *
25: * Vivid Solutions
26: * Suite #1A
27: * 2328 Government Street
28: * Victoria BC V8T 5G5
29: * Canada
30: *
31: * (250)385-6040
32: * www.vividsolutions.com
33: */
34: package com.vividsolutions.jts.geom;
35:
36: /**
37: * <code>GeometryCollection</code> classes support the concept of
38: * applying a <code>GeometryFilter</code> to the <code>Geometry</code>.
39: * The filter is applied to every element <code>Geometry</code>.
40: * A <code>GeometryFilter</code> can either record information about the <code>Geometry</code>
41: * or change the <code>Geometry</code> in some way.
42: * <code>GeometryFilter</code>
43: * is an example of the Gang-of-Four Visitor pattern.
44: *
45: *@version 1.7
46: */
47: public interface GeometryFilter {
48:
49: /**
50: * Performs an operation with or on <code>geom</code>.
51: *
52: *@param geom a <code>Geometry</code> to which the filter is applied.
53: */
54: void filter(Geometry geom);
55: }
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