svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.geometry / org.gvsig.fmap.geometry.api / src / main / java / org / gvsig / fmap / geom / primitive / Curve.java @ 40435
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1 | 40435 | jjdelcerro | /* gvSIG. Geographic Information System of the Valencian Government
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2 | *
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3 | * Copyright (C) 2007-2008 Infrastructures and Transports Department
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4 | * of the Valencian Government (CIT)
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 2
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | */
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22 | |||
23 | /*
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24 | * AUTHORS (In addition to CIT):
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25 | * 2009 {Iver T.I.} {Task}
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26 | */
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27 | |||
28 | package org.gvsig.fmap.geom.primitive; |
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29 | |||
30 | /**
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31 | * <p>
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32 | * This interface is equivalent to the GM_Curve and the GM_CurveSegment specified in
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33 | * <a href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=26012">ISO 19107</a>.
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34 | * Curve is a descendent subtype of {@link Primitive} through {@link OrientablePrimitive}.
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35 | * It is the basis for 1-dimensional geometry.
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36 | * </p>
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37 | * <p>
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38 | * A curve is a continuous image of an open interval
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39 | * and so could be written as a parameterized function such as c(t):(a, b) -> E^n where "t" is a real
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40 | * parameter and E^n is Euclidean space of dimension n (usually 2 or 3, as determined by
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41 | * the coordinate reference system). Any other parameterization that results in the same image curve,
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42 | * traced in the same direction, such as any linear shifts and positive scales such as
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43 | * e(t) = c(a + t(b-a)):(0,1) -> E^n, is an equivalent representation of the same curve.
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44 | * </p>
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45 | * <p>
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46 | * Curves are continuous, connected, and have a measurable length in terms of
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47 | * the coordinate system. The orientation of the curve is determined by this
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48 | * parameterization, and is consistent with the tangent function, which
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49 | * approximates the derivative function of the parameterization and shall
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50 | * always point in the "forward" direction. The parameterization of the reversal of
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51 | * the curve defined by c(t):(a, b) -> E^n would be defined by a function of the
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52 | * form s(t) = c(a + b - t):(a, b) - >E^n.
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53 | * </p>
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54 | * <p>
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55 | * In the ISO model a curve is composed of one or more curve segments.
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56 | * In gvSIG a curve is not composed by curve segments: a curve is
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57 | * one and only one curve segment.
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58 | * </p>
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59 | * @see <a href="http://www.iso.org/iso/iso_catalogue/catalogue_tc/catalogue_detail.htm?csnumber=26012">ISO 19107</a>
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60 | * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>
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61 | */
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62 | public interface Curve extends OrientableCurve{ |
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63 | |||
64 | /**
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65 | * Sets the initial point and the end point of the curve. On this case,
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66 | * the curve is a single line
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67 | * @param initialPoint
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68 | * The initial point
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69 | * @param endPoint
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70 | * The end point
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71 | */
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72 | public void setPoints(Point initialPoint, Point endPoint); |
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73 | |||
74 | } |