mirror of
https://github.com/OpenSpace/OpenSpace.git
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844 lines
42 KiB
C++
844 lines
42 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2017 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include <modules/atmosphere/rendering/renderableatmosphere.h>
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#include <openspace/documentation/documentation.h>
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#include <openspace/documentation/verifier.h>
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#include <modules/space/rendering/planetgeometry.h>
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#include <openspace/util/time.h>
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#include <openspace/util/spicemanager.h>
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#include <openspace/scene/scenegraphnode.h>
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#include <ghoul/filesystem/filesystem.h>
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#include <ghoul/misc/assert.h>
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#include <ghoul/io/texture/texturereader.h>
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#include <ghoul/opengl/programobject.h>
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#include <ghoul/opengl/texture.h>
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#include <ghoul/opengl/textureunit.h>
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#include <ghoul/misc/invariants.h>
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#include <openspace/rendering/deferredcastermanager.h>
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#include <modules/atmosphere/rendering/atmospheredeferredcaster.h>
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#include <openspace/engine/configurationmanager.h>
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#include <openspace/engine/openspaceengine.h>
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#include <openspace/rendering/renderengine.h>
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#include <memory>
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#include <fstream>
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#define _USE_MATH_DEFINES
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#include <math.h>
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namespace {
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const char* KeyGeometry = "Geometry";
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const char* KeyRadius = "Radius";
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static const char* _loggerCat = "RenderableAtmosphere";
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const char* keyFrame = "Frame";
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const char* keyShadowGroup = "Shadow_Group";
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const char* keyShadowSource = "Source";
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const char* keyShadowCaster = "Caster";
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const char* keyBody = "Body";
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const char* keyAtmosphere = "Atmosphere";
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const char* keyAtmosphereType = "Type";
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const char* keyAtmosphereRadius = "AtmosphereRadius";
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const char* keyPlanetRadius = "PlanetRadius";
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const char* keyAverageGroundReflectance = "PlanetAverageGroundReflectance";
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const char* keyRayleigh = "Rayleigh";
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const char* keyRayleighHeightScale = "H_R";
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const char* keyOzone = "Ozone";
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const char* keyOzoneHeightScale = "H_O";
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const char* keyMie = "Mie";
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const char* keyMieHeightScale = "H_M";
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const char* keyMiePhaseConstant = "G";
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const char* keyImage = "Image";
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const char* keyToneMappingOp = "ToneMapping";
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const char* keyExposure = "Exposure";
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const char* keyBackground = "Background";
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const char* keyGamma = "Gamma";
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const char* keyATMDebug = "Debug";
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const char* keyTextureScale = "PreCalculatedTextureScale";
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const char* keySaveTextures = "SaveCalculatedTextures";
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} // namespace
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namespace openspace {
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documentation::Documentation RenderableAtmosphere::Documentation() {
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using namespace documentation;
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return {
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"RenderableAtmosphere",
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"atmosphere_renderable_atmosphere",
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{
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/*
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{
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KeyGeometry,
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new ReferencingVerifier("space_geometry_planet"),
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"Specifies the planet geometry that is used for this RenderableAtmosphere.",
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Optional::No
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},
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{
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KeyRadius,
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new DoubleVerifier,
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"Specifies the radius of the planet. If this value is not specified, it "
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"will try to query the SPICE library for radius values.",
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Optional::Yes
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},
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{
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KeyShading,
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new BoolVerifier,
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"Specifies whether the atmosphere should be rendered shaded by the Sun. If "
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"this value is 'false', any existing night texture will not be used. "
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"This value defaults to 'true'.",
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Optional::Yes
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}
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*/
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}
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};
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}
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RenderableAtmosphere::RenderableAtmosphere(const ghoul::Dictionary& dictionary)
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: Renderable(dictionary)
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// TODO: Enable the shading program later to test spherical atmosphere (JCC)
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//, _programObject(nullptr)
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// TODO: Enable the geometry later to test spherical atmosphere (JCC)
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//, _geometry(nullptr)
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, _atmosphereHeightP("atmmosphereHeight", "Atmosphere Height (KM)", 60.0f, 0.1f, 99.0f)
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, _groundAverageReflectanceP("averageGroundReflectance", "Average Ground Reflectance (%)", 0.1f, 0.0f, 1.0f)
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, _rayleighHeightScaleP("rayleighHeightScale", "Rayleigh Height Scale (KM)", 8.0f, 0.1f, 20.0f)
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, _rayleighScatteringCoeffXP("rayleighScatteringCoeffX", "Rayleigh Scattering Coeff X (x10e-3)", 1.0f, 0.01f, 100.0f)
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, _rayleighScatteringCoeffYP("rayleighScatteringCoeffY", "Rayleigh Scattering Coeff Y (x10e-3)", 1.0f, 0.01f, 100.0f)
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, _rayleighScatteringCoeffZP("rayleighScatteringCoeffZ", "Rayleigh Scattering Coeff Z (x10e-3)", 1.0f, 0.01f, 100.0f)
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, _ozoneEnabledP("ozone", "Ozone Layer Enabled", true)
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, _ozoneHeightScaleP("ozoneLayerHeightScale", "Ozone Height Scale (KM)", 8.0f, 0.1f, 20.0f)
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, _ozoneCoeffXP("ozoneLayerCoeffX", "Ozone Layer Extinction Coeff X (x10e-5)", 3.426f, 0.01f, 100.0f)
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, _ozoneCoeffYP("ozoneLayerCoeffY", "Ozone Layer Extinction Coeff Y (x10e-5)", 8.298f, 0.01f, 100.0f)
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, _ozoneCoeffZP("ozoneLayerCoeffZ", "Ozone Layer Extinction Coeff Z (x10e-5)", 0.356f, 0.01f, 100.0f)
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, _mieHeightScaleP("mieHeightScale", "Mie Height Scale (KM)", 1.2f, 0.1f, 20.0f)
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, _mieScatteringCoeffXP("mieScatteringCoeffX", "Mie Scattering Coeff X (x10e-3)", 4.0f, 0.01f, 1000.0f)
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, _mieScatteringCoeffYP("mieScatteringCoeffY", "Mie Scattering Coeff Y (x10e-3)", 4.0f, 0.01f, 1000.0f)
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, _mieScatteringCoeffZP("mieScatteringCoeffZ", "Mie Scattering Coeff Z (x10e-3)", 4.0f, 0.01f, 1000.0f)
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, _mieScatteringExtinctionPropCoefficientP("mieScatteringExtinctionPropCoefficient",
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"Mie Scattering/Extinction Proportion Coefficient (%)", 0.9f, 0.01f, 1.0f)
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, _mieAsymmetricFactorGP("mieAsymmetricFactorG", "Mie Asymmetric Factor G", 0.85f, -1.0f, 1.0f)
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, _sunIntensityP("sunIntensity", "Sun Intensity", 50.0f, 0.1f, 1000.0f)
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, _hdrExpositionP("hdrExposition", "HDR", 0.4f, 0.01f, 5.0f)
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, _backgroundExposureP("backgroundExposition", "Background Exposition", 1.8f, 0.01f, 10.0f)
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, _gammaConstantP("gamma", "Gamma Correction", 1.8f, 0.1f, 3.0f)
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, _atmosphereEnabled(false)
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, _ozoneLayerEnabled(false)
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, _atmosphereRadius(0.f)
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, _atmospherePlanetRadius(0.f)
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, _planetAverageGroundReflectance(0.f)
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, _rayleighHeightScale(0.f)
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, _ozoneHeightScale(0.f)
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, _mieHeightScale(0.f)
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, _miePhaseConstant(0.f)
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, _sunRadianceIntensity(50.f)
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, _hdrConstant(0.f)
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, _exposureBackgroundConstant(1.8f)
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, _gammaConstant(1.8f)
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, _mieExtinctionCoeff(glm::vec3(0.f))
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, _rayleighScatteringCoeff(glm::vec3(0.f))
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, _ozoneExtinctionCoeff(glm::vec3(0.f))
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, _mieScatteringCoeff(glm::vec3(0.f))
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, _saveCalculationsToTexture(false)
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, _preCalculatedTexturesScale(1.0)
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//, _planetRadius(0.f)
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, _shadowEnabled(false)
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, _time(0.f)
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{
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ghoul_precondition(
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dictionary.hasKeyAndValue<std::string>(SceneGraphNode::KeyName),
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"RenderableAtmosphere needs the name to be specified"
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);
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documentation::testSpecificationAndThrow(
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Documentation(),
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dictionary,
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"RenderableAtmosphere"
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);
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const std::string name = dictionary.value<std::string>(SceneGraphNode::KeyName);
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// TODO: Enable the geometry later to test spherical atmosphere (JCC)
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/*
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ghoul::Dictionary geomDict = dictionary.value<ghoul::Dictionary>(KeyGeometry);
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if (dictionary.hasKey(KeyRadius)) {
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// If the user specified a radius, we want to use this
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_planetRadius = static_cast<float>(dictionary.value<double>(KeyRadius));
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}
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else if (SpiceManager::ref().hasValue(name, "RADII")) {
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// If the user didn't specfify a radius, but Spice has a radius, we can use this
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glm::dvec3 radius;
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SpiceManager::ref().getValue(name, "RADII", radius);
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radius *= 1000.0; // Spice gives radii in KM.
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std::swap(radius[1], radius[2]); // z is equivalent to y in our coordinate system
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geomDict.setValue(KeyRadius, radius);
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_planetRadius = static_cast<float>((radius.x + radius.y + radius.z) / 3.0);
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}
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else {
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LERRORC("RenderableAtmosphere", "Missing radius specification");
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}
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_geometry = planetgeometry::PlanetGeometry::createFromDictionary(geomDict);
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addPropertySubOwner(_geometry.get());
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*/
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//================================================================
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//======== Reads Shadow (Eclipses) Entries in mod file ===========
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//================================================================
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ghoul::Dictionary shadowDictionary;
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bool success = dictionary.getValue(keyShadowGroup, shadowDictionary);
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bool disableShadows = false;
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if (success) {
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std::vector< std::pair<std::string, float > > sourceArray;
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unsigned int sourceCounter = 1;
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while (success) {
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std::string sourceName;
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std::stringstream ss;
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ss << keyShadowSource << sourceCounter << ".Name";
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success = shadowDictionary.getValue(ss.str(), sourceName);
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if (success) {
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float sourceRadius;
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ss.str(std::string());
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ss << keyShadowSource << sourceCounter << ".Radius";
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success = shadowDictionary.getValue(ss.str(), sourceRadius);
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if (success) {
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sourceArray.push_back(std::pair< std::string, float>(
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sourceName, sourceRadius));
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}
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else {
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LWARNING("No Radius value expecified for Shadow Source Name "
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<< sourceName << " from " << name
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<< " planet.\nDisabling shadows for this planet.");
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disableShadows = true;
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break;
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}
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}
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sourceCounter++;
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}
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if (!disableShadows && !sourceArray.empty()) {
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success = true;
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std::vector< std::pair<std::string, float > > casterArray;
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unsigned int casterCounter = 1;
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while (success) {
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std::string casterName;
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std::stringstream ss;
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ss << keyShadowCaster << casterCounter << ".Name";
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success = shadowDictionary.getValue(ss.str(), casterName);
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if (success) {
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float casterRadius;
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ss.str(std::string());
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ss << keyShadowCaster << casterCounter << ".Radius";
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success = shadowDictionary.getValue(ss.str(), casterRadius);
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if (success) {
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casterArray.push_back(std::pair< std::string, float>(
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casterName, casterRadius));
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}
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else {
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LWARNING("No Radius value expecified for Shadow Caster Name "
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<< casterName << " from " << name
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<< " planet.\nDisabling shadows for this planet.");
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disableShadows = true;
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break;
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}
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}
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casterCounter++;
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}
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if (!disableShadows && (!sourceArray.empty() && !casterArray.empty())) {
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for (const auto & source : sourceArray)
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for (const auto & caster : casterArray) {
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ShadowConf sc;
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sc.source = source;
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sc.caster = caster;
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_shadowConfArray.push_back(sc);
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}
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_shadowEnabled = true;
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}
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}
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}
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//================================================================
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//========== Reads Atmosphere Entries from mod file ==============
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//================================================================
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bool errorReadingAtmosphereData = false;
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ghoul::Dictionary atmosphereDictionary;
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success = dictionary.getValue(keyAtmosphere, atmosphereDictionary);
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if (success) {
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std::string atmTypeString;
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if (!atmosphereDictionary.getValue(keyAtmosphereType, atmTypeString)) {
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errorReadingAtmosphereData = true;
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LWARNING("No Atmosphere Type value expecified for Atmosphere Effects " << name
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<< " planet. Types allowed: RenderableGlobe or RenderablePlanet.\nDisabling atmosphere effects for this planet.");
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}
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else {
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if (atmTypeString.compare("RenderableGlobe") == 0) {
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_atmosphereType = AtmosphereDeferredcaster::RenderableGlobe;
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}
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else if (atmTypeString.compare("RenderablePlanet") == 0)
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{
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_atmosphereType = AtmosphereDeferredcaster::RenderablePlanet;
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}
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else
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{
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errorReadingAtmosphereData = true;
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LWARNING("Wrong atmosphere type specified for " << name
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<< " planet. Types allowed: RenderableGlobe or RenderablePlanet.\nDisabling atmosphere effects for this planet.");
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}
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}
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if (!atmosphereDictionary.getValue(keyAtmosphereRadius, _atmosphereRadius)) {
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errorReadingAtmosphereData = true;
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LWARNING("No Atmosphere Radius value expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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if (!atmosphereDictionary.getValue(keyPlanetRadius, _atmospherePlanetRadius)) {
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errorReadingAtmosphereData = true;
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LWARNING("No Planet Radius value expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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if (!atmosphereDictionary.getValue(keyAverageGroundReflectance, _planetAverageGroundReflectance)) {
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errorReadingAtmosphereData = true;
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LWARNING("No Average Atmosphere Ground Reflectance value expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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ghoul::Dictionary rayleighDictionary;
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success = atmosphereDictionary.getValue(keyRayleigh, rayleighDictionary);
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if (success) {
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// Not using right now.
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glm::vec3 rayleighWavelengths;
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success = rayleighDictionary.getValue("Coefficients.Wavelengths", rayleighWavelengths);
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if (!rayleighDictionary.getValue("Coefficients.Scattering", _rayleighScatteringCoeff)) {
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errorReadingAtmosphereData = true;
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LWARNING("No Rayleigh Scattering parameters expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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if (!rayleighDictionary.getValue(keyRayleighHeightScale, _rayleighHeightScale)) {
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errorReadingAtmosphereData = true;
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LWARNING("No Rayleigh Height Scale value expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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}
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else {
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errorReadingAtmosphereData = true;
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LWARNING("No Rayleigh parameters expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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ghoul::Dictionary ozoneDictionary;
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success = atmosphereDictionary.getValue(keyOzone, ozoneDictionary);
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if (success) {
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_ozoneLayerEnabled = true;
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if (!ozoneDictionary.getValue(keyOzoneHeightScale, _ozoneHeightScale)) {
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_ozoneLayerEnabled = false;
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}
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if (!ozoneDictionary.getValue("Coefficients.Extinction", _ozoneExtinctionCoeff)) {
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_ozoneLayerEnabled = false;
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}
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}
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else {
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_ozoneLayerEnabled = false;
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}
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ghoul::Dictionary mieDictionary;
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success = atmosphereDictionary.getValue(keyMie, mieDictionary);
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if (success) {
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if (!mieDictionary.getValue(keyMieHeightScale, _mieHeightScale)) {
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errorReadingAtmosphereData = true;
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LWARNING("No Mie Height Scale value expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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if (!mieDictionary.getValue("Coefficients.Scattering", _mieScatteringCoeff)) {
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errorReadingAtmosphereData = true;
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LWARNING("No Mie Scattering parameters expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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if (!mieDictionary.getValue("Coefficients.Extinction", _mieExtinctionCoeff)) {
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errorReadingAtmosphereData = true;
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LWARNING("No Mie Extinction parameters expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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if (!mieDictionary.getValue(keyMiePhaseConstant, _miePhaseConstant)) {
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errorReadingAtmosphereData = true;
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LWARNING("No Mie Phase Constant value expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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}
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else {
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errorReadingAtmosphereData = true;
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LWARNING("No Mie parameters expecified for Atmosphere Effects of "
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<< name << " planet.\nDisabling atmosphere effects for this planet.");
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}
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ghoul::Dictionary ImageDictionary;
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success = atmosphereDictionary.getValue(keyImage, ImageDictionary);
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if (success) {
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if (ImageDictionary.getValue(keyToneMappingOp, _preCalculatedTexturesScale)) {
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LDEBUG("Atmosphere Texture Scaled to " << _preCalculatedTexturesScale);
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}
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if (ImageDictionary.getValue(keyExposure, _hdrConstant)) {
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LDEBUG("Saving Precalculated Atmosphere Textures.");
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}
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if (ImageDictionary.getValue(keyGamma, _gammaConstant)) {
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LDEBUG("Saving Precalculated Atmosphere Textures.");
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}
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}
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ghoul::Dictionary debugDictionary;
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success = atmosphereDictionary.getValue(keyATMDebug, debugDictionary);
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if (success) {
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if (debugDictionary.getValue(keyTextureScale, _preCalculatedTexturesScale)) {
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LDEBUG("Atmosphere Texture Scaled to " << _preCalculatedTexturesScale);
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}
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if (debugDictionary.getValue(keySaveTextures, _saveCalculationsToTexture)) {
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LDEBUG("Saving Precalculated Atmosphere Textures.");
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}
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}
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if (!errorReadingAtmosphereData) {
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_atmosphereEnabled = true;
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//========================================================
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//============== Atmosphere Properties ===================
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//========================================================
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_atmosphereHeightP.set(_atmosphereRadius - _atmospherePlanetRadius);
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_atmosphereHeightP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_atmosphereHeightP);
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_groundAverageReflectanceP.set(_planetAverageGroundReflectance);
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_groundAverageReflectanceP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_groundAverageReflectanceP);
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_rayleighHeightScaleP.set(_rayleighHeightScale);
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_rayleighHeightScaleP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_rayleighHeightScaleP);
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_rayleighScatteringCoeffXP.set(_rayleighScatteringCoeff.x * 1000.0f);
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_rayleighScatteringCoeffXP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_rayleighScatteringCoeffXP);
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_rayleighScatteringCoeffYP.set(_rayleighScatteringCoeff.y * 1000.0f);
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_rayleighScatteringCoeffYP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_rayleighScatteringCoeffYP);
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_rayleighScatteringCoeffZP.set(_rayleighScatteringCoeff.z * 1000.0f);
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_rayleighScatteringCoeffZP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_rayleighScatteringCoeffZP);
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_ozoneEnabledP.set(_ozoneLayerEnabled);
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_ozoneEnabledP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_ozoneEnabledP);
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_ozoneHeightScaleP.set(_ozoneHeightScale);
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_ozoneHeightScaleP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_ozoneHeightScaleP);
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_ozoneCoeffXP.set(_ozoneExtinctionCoeff.x * 100000.0f);
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_ozoneCoeffXP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_ozoneCoeffXP);
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_ozoneCoeffYP.set(_ozoneExtinctionCoeff.y * 100000.0f);
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_ozoneCoeffYP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_ozoneCoeffYP);
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_ozoneCoeffZP.set(_ozoneExtinctionCoeff.z * 100000.0f);
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_ozoneCoeffZP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_ozoneCoeffZP);
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_mieHeightScaleP.set(_mieHeightScale);
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_mieHeightScaleP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_mieHeightScaleP);
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_mieScatteringCoeffXP.set(_mieScatteringCoeff.x * 1000.0f);
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_mieScatteringCoeffXP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_mieScatteringCoeffXP);
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_mieScatteringCoeffYP.set(_mieScatteringCoeff.y * 1000.0f);
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_mieScatteringCoeffYP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_mieScatteringCoeffYP);
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_mieScatteringCoeffZP.set(_mieScatteringCoeff.z * 1000.0f);
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_mieScatteringCoeffZP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_mieScatteringCoeffZP);
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_mieScatteringExtinctionPropCoefficientP.set(_mieScatteringCoeff.x / _mieExtinctionCoeff.x);
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_mieScatteringExtinctionPropCoefficientP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_mieScatteringExtinctionPropCoefficientP);
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_mieAsymmetricFactorGP.set(_miePhaseConstant);
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_mieAsymmetricFactorGP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_mieAsymmetricFactorGP);
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_sunIntensityP.set(_sunRadianceIntensity);
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_sunIntensityP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_sunIntensityP);
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_hdrExpositionP.set(_hdrConstant);
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_hdrExpositionP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_hdrExpositionP);
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_backgroundExposureP.set(_exposureBackgroundConstant);
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_backgroundExposureP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_backgroundExposureP);
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_gammaConstantP.set(_gammaConstant);
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_gammaConstantP.onChange(std::bind(&RenderableAtmosphere::updateAtmosphereParameters, this));
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addProperty(_gammaConstantP);
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}
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}
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}
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bool RenderableAtmosphere::initialize() {
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RenderEngine& renderEngine = OsEng.renderEngine();
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// TODO: Enable the shading program later to test spherical atmosphere (JCC)
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/*
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if (_programObject == nullptr ) {
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// TODO: Change for the right shading program (JCC)
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_programObject = renderEngine.buildRenderProgram(
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"shadowNightProgram",
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"${MODULE_ATMOSPHERE}/shaders/shadow_nighttexture_vs.glsl",
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"${MODULE_ATMOSPHERE}/shaders/shadow_nighttexture_fs.glsl");
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}
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using IgnoreError = ghoul::opengl::ProgramObject::IgnoreError;
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_programObject->setIgnoreSubroutineUniformLocationError(IgnoreError::Yes);
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_programObject->setIgnoreUniformLocationError(IgnoreError::Yes);
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// Deactivate any previously activated shader program.
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_programObject->deactivate();
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*/
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// TODO: Enable the geometry later to test spherical atmosphere (JCC)
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//_geometry->initialize(this);
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if (_atmosphereEnabled) {
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_deferredcaster = std::make_unique<AtmosphereDeferredcaster>();
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if (_deferredcaster) {
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_deferredcaster->setAtmosphereRadius(_atmosphereRadius);
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_deferredcaster->setPlanetRadius(_atmospherePlanetRadius);
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_deferredcaster->setPlanetAverageGroundReflectance(_planetAverageGroundReflectance);
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_deferredcaster->setRayleighHeightScale(_rayleighHeightScale);
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_deferredcaster->enableOzone(_ozoneLayerEnabled);
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_deferredcaster->setOzoneHeightScale(_ozoneHeightScale);
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_deferredcaster->setMieHeightScale(_mieHeightScale);
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_deferredcaster->setMiePhaseConstant(_miePhaseConstant);
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_deferredcaster->setSunRadianceIntensity(_sunRadianceIntensity);
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_deferredcaster->setHDRConstant(_hdrConstant);
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_deferredcaster->setBackgroundConstant(_exposureBackgroundConstant);
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_deferredcaster->setGammaConstant(_gammaConstant);
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_deferredcaster->setRayleighScatteringCoefficients(_rayleighScatteringCoeff);
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_deferredcaster->setOzoneExtinctionCoefficients(_ozoneExtinctionCoeff);
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_deferredcaster->setMieScatteringCoefficients(_mieScatteringCoeff);
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_deferredcaster->setMieExtinctionCoefficients(_mieExtinctionCoeff);
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// TODO: Fix the ellipsoid nature of the renderable globe (JCC)
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//_deferredcaster->setEllipsoidRadii(_ellipsoid.radii());
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_deferredcaster->setRenderableClass(_atmosphereType);
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_deferredcaster->setPrecalculationTextureScale(_preCalculatedTexturesScale);
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if (_saveCalculationsToTexture)
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_deferredcaster->enablePrecalculationTexturesSaving();
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_deferredcaster->initialize();
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}
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OsEng.renderEngine().deferredcasterManager().attachDeferredcaster(*_deferredcaster.get());
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std::function<void(bool)> onChange = [&](bool enabled) {
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if (enabled) {
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OsEng.renderEngine().deferredcasterManager().attachDeferredcaster(*_deferredcaster.get());
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}
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else {
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OsEng.renderEngine().deferredcasterManager().detachDeferredcaster(*_deferredcaster.get());
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}
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};
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onEnabledChange(onChange);
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}
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return isReady();
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}
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bool RenderableAtmosphere::deinitialize() {
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// TODO: Enable the geometry later to test spherical atmosphere (JCC)
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/*
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if (_geometry) {
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_geometry->deinitialize();
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}
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_geometry = nullptr;
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*/
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RenderEngine& renderEngine = OsEng.renderEngine();
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// TODO: Enable the shading program later to test spherical atmosphere (JCC)
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/*
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if (_programObject) {
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renderEngine.removeRenderProgram(_programObject);
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}
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_programObject = nullptr;
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*/
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if (_deferredcaster) {
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OsEng.renderEngine().deferredcasterManager().detachDeferredcaster(*_deferredcaster.get());
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_deferredcaster = nullptr;
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}
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return true;
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}
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bool RenderableAtmosphere::isReady() const {
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bool ready = true;
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// TODO: Enable the shading program later to test spherical atmosphere (JCC)
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//ready &= (_programObject != nullptr);
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// TODO: Enable the geometry later to test spherical atmosphere (JCC)
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//ready &= (_geometry != nullptr);
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ready &= (_deferredcaster != nullptr);
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return ready;
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}
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void RenderableAtmosphere::computeModelTransformMatrix(const openspace::TransformData & transformData,
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glm::dmat4 * modelTransform) {
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// scale the planet to appropriate size since the planet is a unit sphere
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*modelTransform =
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glm::translate(glm::dmat4(1.0), transformData.translation) * // Translation
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glm::dmat4(transformData.rotation) * // Spice rotation
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glm::dmat4(glm::scale(glm::dmat4(1.0), glm::dvec3(transformData.scale)));
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}
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void RenderableAtmosphere::render(const RenderData& data, RendererTasks& renderTask) {
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// TODO: Enable the shading program later to test spherical atmosphere (JCC)
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/*
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_programObject->activate();
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glm::dmat4 modelTransform = glm::dmat4(1.0);
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computeModelTransformMatrix(data.modelTransform, &modelTransform);
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glm::dmat4 modelViewTransform = data.camera.combinedViewMatrix() * modelTransform;
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_programObject->setUniform("transparency", _alpha);
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_programObject->setUniform("modelViewTransform", modelViewTransform);
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_programObject->setUniform("modelViewProjectionTransform",
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data.camera.sgctInternal.projectionMatrix() * glm::mat4(modelViewTransform)
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);
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_programObject->setUniform("ModelTransform", glm::mat4(modelTransform));
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setPscUniforms(*_programObject.get(), data.camera, data.position);
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glEnable(GL_CULL_FACE);
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glCullFace(GL_BACK);
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//=============================================================================
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//============= Eclipse Shadow Calculations and Uniforms Loading ==============
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//=============================================================================
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// TODO: Move Calculations to VIEW SPACE (let's avoid precision problems...)
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double lt;
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if (!_shadowConfArray.empty()) {
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std::vector<ShadowRenderingStruct> shadowDataArray;
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shadowDataArray.reserve(_shadowConfArray.size());
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for (const auto & shadowConf : _shadowConfArray) {
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// TO REMEMBER: all distances and lengths in world coordinates are in meters!!! We need to move this to view space...
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// Getting source and caster:
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glm::dvec3 sourcePos = SpiceManager::ref().targetPosition(shadowConf.source.first, "SUN", "GALACTIC", {}, _time, lt);
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sourcePos *= 1000.0; // converting to meters
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glm::dvec3 casterPos = SpiceManager::ref().targetPosition(shadowConf.caster.first, "SUN", "GALACTIC", {}, _time, lt);
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casterPos *= 1000.0; // converting to meters
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psc caster_pos = PowerScaledCoordinate::CreatePowerScaledCoordinate(casterPos.x, casterPos.y, casterPos.z);
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// First we determine if the caster is shadowing the current planet (all calculations in World Coordinates):
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glm::vec3 planetCasterVec = (caster_pos - data.position).vec3();
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glm::vec3 sourceCasterVec = glm::vec3(casterPos - sourcePos);
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float sc_length = glm::length(sourceCasterVec);
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glm::vec3 planetCaster_proj = (glm::dot(planetCasterVec, sourceCasterVec) / (sc_length*sc_length)) * sourceCasterVec;
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float d_test = glm::length(planetCasterVec - planetCaster_proj);
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float xp_test = shadowConf.caster.second * sc_length / (shadowConf.source.second + shadowConf.caster.second);
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float rp_test = shadowConf.caster.second * (glm::length(planetCaster_proj) + xp_test) / xp_test;
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double casterDistSun = glm::length(casterPos);
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float planetDistSun = glm::length(data.position.vec3());
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ShadowRenderingStruct shadowData;
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shadowData.isShadowing = false;
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if (((d_test - rp_test) < _planetRadius) &&
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(casterDistSun < planetDistSun)) {
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// The current caster is shadowing the current planet
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shadowData.isShadowing = true;
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shadowData.rs = shadowConf.source.second;
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shadowData.rc = shadowConf.caster.second;
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shadowData.sourceCasterVec = sourceCasterVec;
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shadowData.xp = xp_test;
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shadowData.xu = shadowData.rc * sc_length / (shadowData.rs - shadowData.rc);
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shadowData.casterPositionVec = glm::vec3(casterPos);
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}
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shadowDataArray.push_back(shadowData);
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}
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const std::string uniformVarName("shadowDataArray[");
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unsigned int counter = 0;
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for (const auto & sd : shadowDataArray) {
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std::stringstream ss;
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ss << uniformVarName << counter << "].isShadowing";
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_programObject->setUniform(ss.str(), sd.isShadowing);
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if (sd.isShadowing) {
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ss.str(std::string());
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ss << uniformVarName << counter << "].xp";
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_programObject->setUniform(ss.str(), sd.xp);
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ss.str(std::string());
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ss << uniformVarName << counter << "].xu";
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_programObject->setUniform(ss.str(), sd.xu);
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//ss.str(std::string());
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//ss << uniformVarName << counter << "].rs";
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//_programObject->setUniform(ss.str(), sd.rs);
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ss.str(std::string());
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ss << uniformVarName << counter << "].rc";
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_programObject->setUniform(ss.str(), sd.rc);
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ss.str(std::string());
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ss << uniformVarName << counter << "].sourceCasterVec";
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_programObject->setUniform(ss.str(), sd.sourceCasterVec);
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ss.str(std::string());
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ss << uniformVarName << counter << "].casterPositionVec";
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_programObject->setUniform(ss.str(), sd.casterPositionVec);
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}
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counter++;
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}
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}
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// render
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_geometry->render();
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// disable shader
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_programObject->deactivate();
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*/
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if (_atmosphereEnabled) {
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DeferredcasterTask task{ _deferredcaster.get(), data };
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renderTask.deferredcasterTasks.push_back(task);
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}
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}
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void RenderableAtmosphere::update(const UpdateData& data) {
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_stateMatrix = data.modelTransform.rotation;
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_time = data.time.j2000Seconds();
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// TODO: Enable the shading program later to test spherical atmosphere (JCC)
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/*
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if (_programObject && _programObject->isDirty())
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_programObject->rebuildFromFile();
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*/
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if (_deferredcaster) {
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_deferredcaster->setTime(data.time.j2000Seconds());
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glm::dmat4 modelTransform;
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computeModelTransformMatrix(data.modelTransform, &modelTransform);
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if (_atmosphereType == AtmosphereDeferredcaster::RenderablePlanet) {
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//earth needs to be rotated
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glm::dmat4 rot = glm::rotate(glm::dmat4(1.0), M_PI_2, glm::dvec3(1, 0, 0));
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glm::dmat4 roty = glm::rotate(glm::dmat4(1.0), M_PI_2, glm::dvec3(0, -1, 0));
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modelTransform = modelTransform * rot * roty;
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}
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_deferredcaster->setModelTransform(modelTransform);
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}
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}
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void RenderableAtmosphere::updateAtmosphereParameters() {
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bool executeComputation = true;
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if (_sunRadianceIntensity != _sunIntensityP ||
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_hdrConstant != _hdrExpositionP ||
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_exposureBackgroundConstant != _backgroundExposureP ||
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_gammaConstant != _gammaConstantP)
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executeComputation = false;
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_atmosphereRadius = _atmospherePlanetRadius + _atmosphereHeightP;
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_planetAverageGroundReflectance = _groundAverageReflectanceP;
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_rayleighHeightScale = _rayleighHeightScaleP;
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_rayleighScatteringCoeff = glm::vec3(_rayleighScatteringCoeffXP * 0.001f, _rayleighScatteringCoeffYP * 0.001f,
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_rayleighScatteringCoeffZP * 0.001f);
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_ozoneLayerEnabled = _ozoneEnabledP.value();
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_ozoneHeightScale = _ozoneHeightScaleP.value();
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_ozoneExtinctionCoeff = glm::vec3(_ozoneCoeffXP.value() * 0.00001f,
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_ozoneCoeffYP.value() * 0.00001f,
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_ozoneCoeffZP.value() * 0.00001f);
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_mieHeightScale = _mieHeightScaleP;
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_mieScatteringCoeff = glm::vec3(_mieScatteringCoeffXP * 0.001f, _mieScatteringCoeffYP * 0.001f,
|
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_mieScatteringCoeffZP * 0.001f);
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_mieExtinctionCoeff = _mieScatteringCoeff * (1.0f / static_cast<float>(_mieScatteringExtinctionPropCoefficientP));
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_miePhaseConstant = _mieAsymmetricFactorGP;
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_sunRadianceIntensity = _sunIntensityP;
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_hdrConstant = _hdrExpositionP;
|
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_exposureBackgroundConstant = _backgroundExposureP;
|
|
_gammaConstant = _gammaConstantP.value();
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|
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if (_deferredcaster) {
|
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_deferredcaster->setAtmosphereRadius(_atmosphereRadius);
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_deferredcaster->setPlanetRadius(_atmospherePlanetRadius);
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|
_deferredcaster->setPlanetAverageGroundReflectance(_planetAverageGroundReflectance);
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_deferredcaster->setRayleighHeightScale(_rayleighHeightScale);
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_deferredcaster->enableOzone(_ozoneLayerEnabled);
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|
_deferredcaster->setOzoneHeightScale(_ozoneHeightScale);
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|
_deferredcaster->setMieHeightScale(_mieHeightScale);
|
|
_deferredcaster->setMiePhaseConstant(_miePhaseConstant);
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|
_deferredcaster->setSunRadianceIntensity(_sunRadianceIntensity);
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|
_deferredcaster->setHDRConstant(_hdrConstant);
|
|
_deferredcaster->setBackgroundConstant(_exposureBackgroundConstant);
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|
_deferredcaster->setGammaConstant(_gammaConstant);
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|
_deferredcaster->setRayleighScatteringCoefficients(_rayleighScatteringCoeff);
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|
_deferredcaster->setOzoneExtinctionCoefficients(_ozoneExtinctionCoeff);
|
|
_deferredcaster->setMieScatteringCoefficients(_mieScatteringCoeff);
|
|
_deferredcaster->setMieExtinctionCoefficients(_mieExtinctionCoeff);
|
|
_deferredcaster->setRenderableClass(AtmosphereDeferredcaster::RenderablePlanet);
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|
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if (executeComputation)
|
|
_deferredcaster->preCalculateAtmosphereParam();
|
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}
|
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}
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} // namespace openspace
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