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 / Ellipse.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 | |||
31 | /**
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32 | * <p>
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33 | * An ellipse is the finite or bounded case of a conic section,
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34 | * the geometric shape that results from cutting a circular conical
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35 | * or cylindrical surface with an oblique plane (the other two cases being
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36 | * the parabola and the hyperbola). It is also the locus of all points of
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37 | * the plane whose distances to two fixed points add to the same constant.
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38 | * </p>
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39 | * @see <a href="http://en.wikipedia.org/wiki/Ellipse">Full definition from Wikipedia</a>
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40 | * @author <a href="mailto:jpiera@gvsig.org">Jorge Piera</a>
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41 | */
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42 | public interface Ellipse extends Surface { |
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43 | |||
44 | /**
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45 | * Sets the values to define a ellipse.
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46 | * @param axis1Start
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47 | * The point where the first axis starts.
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48 | * @param axis1End
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49 | * The point where the first axis ends.
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50 | * @param axis2Length
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51 | * The length of the second axis.
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52 | */
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53 | void setPoints(Point axis1Start, Point axis1End, double axis2Length); |
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54 | |||
55 | /**
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56 | * Returns the point where the first axis starts.
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57 | * @return
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58 | * The point where the first axis starts.
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59 | */
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60 | Point getAxis1Start();
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61 | |||
62 | /**
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63 | * Returns the point where the first axis ends.
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64 | * @return
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65 | * The point where the first axis ends.
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66 | */
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67 | Point getAxis1End();
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68 | |||
69 | /**
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70 | * Returns the length of the second axis.
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71 | * @return
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72 | * The length of the second axis.
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73 | */
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74 | double getAxis2Dist();
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75 | } |