svn-gvsig-desktop / branches / v2_0_0_prep / libraries / libFMap_geometries / src / org / gvsig / fmap / geom / primitive / OrientablePrimitive.java @ 28990
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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/*
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* AUTHORS (In addition to CIT):
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* 2009 {Iver T.I.} {Task}
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*/
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package org.gvsig.fmap.geom.primitive; |
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/**
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* <p>
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* This interface is equivalent to the GM_OrientablePrimitive specified in
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* <a href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=26012">ISO 19107</a>.
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* Orientable primitives are those that can be mirrored into new
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* geometric objects in terms of their internal local coordinate
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* systems (manifold charts).
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* </p>
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* <p>
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* For curves, the orientation reflects the direction in which the curve is traversed,
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* that is, the sense of its parameterization. When used as boundary curves,
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* the surface being bounded is to the "left" of the oriented curve.
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* </p>
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* <p>
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* For surfaces, the orientation reflects from which direction the local coordinate
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* system can be viewed as right handed, the "top" or the surface being the direction
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* of a completing z-axis that would form a right-handed system.
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* </p>
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* <p>
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* When used as a boundary surface, the bounded solid is "below" the surface.
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* The orientation of points and solids has no immediate geometric interpretation
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* in 3-dimensional space.
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* </p>
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* <p> OrientablePrimitive objects are essentially references to geometric primitives
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* that carry an "orientation" reversal flag (either "+" or "-") that determines whether
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* this primitive agrees or disagrees with the orientation of the referenced object.
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* </p>
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* @see <a href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=26012">ISO 19107</a>
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* @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>
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*/
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public interface OrientablePrimitive extends Primitive { |
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} |