95 lines
3.1 KiB
Plaintext
95 lines
3.1 KiB
Plaintext
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/* -*-c++-*- */
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/* osgEarth - Geospatial SDK for OpenSceneGraph
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* Copyright 2008-2012 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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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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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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#ifndef OSGEARTHUTIL_CONTOUR_MAP_H
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#define OSGEARTHUTIL_CONTOUR_MAP_H
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#include <osgEarth/VisibleLayer>
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#include <osgEarth/Color>
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#include <osg/Texture1D>
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#include <osg/Texture2D>
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#include <osg/TransferFunction>
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namespace osgEarth
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{
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/**
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* Layer that renders a color ramp based on Elevation data in the Map.
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*/
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class OSGEARTH_EXPORT ContourMapLayer : public VisibleLayer
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{
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public:
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class OSGEARTH_EXPORT Options : public VisibleLayer::Options {
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public:
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META_LayerOptions(osgEarth, Options, VisibleLayer::Options);
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struct Stop {
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float elevation;
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Color color;
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};
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OE_OPTION_VECTOR(Stop, stops);
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virtual Config getConfig() const;
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static Config getMetadata();
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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, ContourMapLayer, Options, VisibleLayer, ContourMap);
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//! Sets a custom transfer function
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void setTransferFunction(osg::TransferFunction1D* xf);
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osg::TransferFunction1D* getTransferFunction() const { return _xfer.get(); }
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public: // Layer
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//! Called by constructors
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virtual void init() override;
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//! MapNode will call this function when terrain resources are available
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virtual void prepareForRendering(TerrainEngine*) override;
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//! Release resources on close
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virtual Status closeImplementation() override;
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protected:
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//! Destructor
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virtual ~ContourMapLayer() { }
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#if defined(OSG_GLES2_AVAILABLE) || defined(OSG_GLES3_AVAILABLE)
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typedef osg::Texture2D TextureType;
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#else
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typedef osg::Texture1D TextureType;
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#endif
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TextureImageUnitReservation _reservation;
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osg::ref_ptr<osg::TransferFunction1D> _xfer;
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osg::ref_ptr<TextureType> _xferTexture;
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osg::ref_ptr<osg::Uniform> _xferSampler;
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osg::ref_ptr<osg::Uniform> _xferMin;
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osg::ref_ptr<osg::Uniform> _xferRange;
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};
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}
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OSGEARTH_SPECIALIZE_CONFIG(osgEarth::ContourMapLayer::Options);
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#endif // OSGEARTHUTIL_CONTOUR_MAP_H
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