115 lines
4.3 KiB
C++
115 lines
4.3 KiB
C++
/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2020 Pelican Mapping
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* http://osgearth.org
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*
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* osgEarth is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*/
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#pragma once
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#include <osgEarth/Common>
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#include <osgEarth/ImageLayer>
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#include <osgEarth/ElevationLayer>
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#include <osgEarth/LayerReference>
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namespace osgEarth
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{
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/**
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* ImageLayer that exposes gdal's dem processing capabilities.
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*/
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class OSGEARTH_EXPORT GDALDEMLayer : public ImageLayer
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{
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public: // serialization
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class OSGEARTH_EXPORT Options : public ImageLayer::Options {
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public:
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META_LayerOptions(osgEarth, Options, ImageLayer::Options);
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OE_OPTION_LAYER(ElevationLayer, elevationLayer);
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OE_OPTION(std::string, processing, "hillshade");
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OE_OPTION(float, azimuth, 0.0f);
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OE_OPTION(float, lightAltitude, 0.0f);
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OE_OPTION(bool, multidirectional);
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OE_OPTION(bool, combined, false);
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OE_OPTION(bool, alpha, false);
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OE_OPTION(URI, color_filename);
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virtual Config getConfig() const;
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private:
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void fromConfig(const Config& conf);
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};
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public:
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META_Layer(osgEarth, GDALDEMLayer, Options, ImageLayer, GDALDEMLayer);
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public:
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//! The elevation layer to get heightfields from.
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void setElevationLayer(ElevationLayer* layer);
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ElevationLayer* getElevationLayer() const;
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//! Processing option. Depends on GDAL version; typical options: hillshade; slope; aspect; color-relief; TRI; TPI; roughness
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void setProcessing(const std::string& value);
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const std::string& getProcessing() const;
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//! Azimuth of the light, in degrees. 0 if it comes from the top of the raster, 90 from the east; typically 315; useful only for hillshade processing.
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void setAzimuth(const float& value);
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float getAzimuth() const;
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//! Altitude of the light, in degrees. 90 if the light comes from above the DEM, 0 if it is raking light; for hillshade processing
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void setLightAltitude(const float& value);
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float getLightAltitude() const;
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//! Multidirectional shading, a combination of hillshading illuminated from 225 deg, 270 deg, 315 deg, and 360 deg azimuth; useful only for hillshade processing.
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void setMultidirectional(const bool& value);
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bool getMultidirectional() const;
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//! Combined shading, a combination of slope and oblique shading; useful only for hillshade processing.
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void setCombined(const bool& value);
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bool getCombined() const;
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//! Color output supports alpha; useful only for color-relief processing.
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void setAlpha(const bool& value);
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bool getAlpha() const;
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//! Color text file containing lines of format "elevation_value red green blue [alpha]"; useful only for color-relief processing.
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void setColorFilename(const URI& value);
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const URI& getColorFilename() const;
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public: // Layer
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//! open succesfully
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Status openImplementation() override;
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//! Close all composited layers
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Status closeImplementation() override;
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//! Creates a raster image for the given tile key
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GeoImage createImageImplementation(const TileKey& key, ProgressCallback* progress) const override;
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//! Called when a layer is added to the map
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void addedToMap(const Map* map) override;
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void removedFromMap(const Map* map) override;
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protected: // Layer
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//! Called by constructors
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void init() override;
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std::string _colorRampFilename;
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osg::observer_ptr<ElevationLayer> _elevationLayer;
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};
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} // namespace osgEarth
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OSGEARTH_SPECIALIZE_CONFIG(osgEarth::GDALDEMLayer::Options);
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