1 | /* -*-c++-*- osgVisual - Copyright (C) 2009-2011 Torben Dannhauer |
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2 | * |
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3 | * This library is based on OpenSceneGraph, open source and may be redistributed and/or modified under |
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4 | * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or |
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5 | * (at your option) any later version. The full license is in LICENSE file |
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6 | * included with this distribution, and on the openscenegraph.org website. |
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7 | * |
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8 | * osgVisual requires for some proprietary modules a license from the correspondig manufacturer. |
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9 | * You have to aquire licenses for all used proprietary modules. |
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10 | * |
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11 | * This library 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 | * OpenSceneGraph Public License for more details. |
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15 | */ |
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16 | |
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17 | #include "ellipsoidTechnique.h" |
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18 | |
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19 | |
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20 | ellipsoidTechnique::ellipsoidTechnique() |
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21 | { |
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22 | _height = 0.0; |
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23 | } |
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24 | |
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25 | ellipsoidTechnique::~ellipsoidTechnique() |
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26 | { |
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27 | } |
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28 | |
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29 | void ellipsoidTechnique::modifyHeightfield(region& modificationROI, osg::HeightField* h, region tileExtends) |
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30 | { |
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31 | //OSG_NOTIFY( osg::ALWAYS ) << "ellipsoidTechnique::modifyHeightfield()" << std::endl; |
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32 | //OSG_NOTIFY( osg::ALWAYS ) << "LAT: " << tileExtends._lat_min << " | " << tileExtends._lat_max << std::endl; |
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33 | //OSG_NOTIFY( osg::ALWAYS ) << "LON: " << tileExtends._lon_min << " | " << tileExtends._lon_max << std::endl; |
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34 | |
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35 | // calculate colum start/end and row start/end of affected vertices |
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36 | int startX=0, startY=0, endX=h->getNumColumns(), endY=h->getNumRows(); |
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37 | |
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38 | |
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39 | // Determine loop variables.. |
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40 | if(tileExtends._lat_min<modificationROI._lat_min) |
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41 | startY = (modificationROI._lat_min - tileExtends._lat_min) / h->getYInterval(); |
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42 | if(tileExtends._lat_max>modificationROI._lat_max) |
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43 | endY = (modificationROI._lat_max - tileExtends._lat_min) / h->getYInterval(); |
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44 | |
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45 | if(tileExtends._lon_min<modificationROI._lon_min) |
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46 | startX = (modificationROI._lon_min - tileExtends._lon_min) / h->getXInterval(); |
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47 | if(tileExtends._lon_max>modificationROI._lon_max) |
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48 | endX = (modificationROI._lon_max - tileExtends._lon_min) / h->getXInterval(); |
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49 | |
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50 | |
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51 | // Modify height value of affected vertices |
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52 | for(int x=startX;x<endX;x++) |
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53 | { |
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54 | for(int y=startY;y<endY;y++) |
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55 | { |
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56 | h->setHeight( x, y, _height); |
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57 | } |
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58 | } |
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59 | } |
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60 | |
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