Revision 9447
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* $Id$ |
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* Revision 1.5 2006-12-21 18:25:30 azabala |
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* Revision 1.6 2006-12-22 09:02:03 caballero |
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* Tener en cuenta tanto las unidades reales como las de medida |
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* |
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* Revision 1.5 2006/12/21 18:25:30 azabala |
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* bug fixed (change getMapUnits with getDistanceUnits) |
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* |
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* Revision 1.4 2006/09/15 10:42:54 caballero |
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/** |
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* Utility methods to manage distances |
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* (conversion from user entries to internal units, |
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* verifying if projection is planar or we are
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* verifying if projection is planar or we are |
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* working with geographic coordinates, etc.) |
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* @author azabala |
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* |
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*/ |
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public class UnitUtils {
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public static final double EARTH_RADIUS = 6378137d; |
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/** |
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* For computing with geodetic coordinates: |
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* returns the angular measure (in radians) |
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* for a distance over the earth along a
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* for a distance over the earth along a |
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* meridiam. |
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* Because this consideration is an approximation, |
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* we consideer the eart like an sphere (not an |
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*/ |
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return Math.toDegrees((2 * Math.PI * dist)/EARTH_RADIUS); |
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} |
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/** |
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* Converts a distance entered by user in the GUI in the same distance |
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* in internal units (measure units) |
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*
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* |
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* */ |
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public static double getInInternalUnits(double userEntryDistance){
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// VCN he modificado esto a como creo que deber?a de estar, as? tiene en cuenta para calcular la distancia tanto las unidades |
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//en las que se encuentra la cartograf?a como las unidades de medida seleccionadas por el usuario. |
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int distanceUnits = ((View)PluginServices. |
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getMDIManager(). |
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getActiveWindow()).getMapControl().getViewPort().getDistanceUnits(); |
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int mapUnits = ((View)PluginServices. |
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getMDIManager(). |
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getActiveWindow()).getMapControl().getViewPort().getDistanceUnits();
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double distInInternalUnits = userEntryDistance * MapContext.CHANGEM[mapUnits];
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getActiveWindow()).getMapControl().getViewPort().getMapUnits();
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double distInInternalUnits = (userEntryDistance/MapContext.CHANGEM[distanceUnits]) * MapContext.CHANGEM[mapUnits];
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/* |
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* if layer's projections is in geographics |
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coords, pass distance to a angular measure |
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getProjection(); |
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if( (proj != null) && !(proj instanceof CSUTM)){
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distInInternalUnits = |
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UnitUtils.toSexaAngularMeasure(distInInternalUnits);
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UnitUtils.toSexaAngularMeasure(distInInternalUnits); |
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} |
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return distInInternalUnits; |
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} |
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} |
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