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obj plugin: add option "NsIfNotPresent=" for setting the specular exponent of a material if not present

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This commit is contained in:
Ralf Habacker
2019-07-15 14:29:26 +02:00
parent a3b2ac63b3
commit 361ea5d15d
2 changed files with 11 additions and 2 deletions
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11
src/osgPlugins/obj/ReaderWriterOBJ.cpp
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@@ -72,6 +72,7 @@ public:
supportsOption("BUMP=<unit>", "Set texture unit for bumpmap texture");
supportsOption("DISPLACEMENT=<unit>", "Set texture unit for displacement texture");
supportsOption("REFLECTION=<unit>", "Set texture unit for reflection texture");
supportsOption("NsIfNotPresent=<value>", "set specular exponent if not present");
supportsOption("precision=<digits>","Set the floating point precision when writing out files");
}
@@ -156,6 +157,7 @@ protected:
TextureAllocationMap textureUnitAllocation;
/// Coordinates precision.
int precision;
int specularExponent;
ObjOptionsStruct()
{
@@ -166,6 +168,7 @@ protected:
fixBlackMaterials = true;
noReverseFaces = false;
precision = std::numeric_limits<double>::digits10 + 2;
specularExponent = -1;
}
};
@@ -361,7 +364,8 @@ void ReaderWriterOBJ::buildMaterialToStateSetMap(obj::Model& model, MaterialToSt
} else {
osg_material->setSpecular(osg::Material::FRONT_AND_BACK, osg::Vec4(0,0,0,1));
}
osg_material->setShininess(osg::Material::FRONT_AND_BACK,(material.Ns/1000.0f)*128.0f ); // note OBJ shiniess is 0..1000.
int ns = material.Ns != -1 ? material.Ns : localOptions.specularExponent != -1 ? localOptions.specularExponent : 0;
osg_material->setShininess(osg::Material::FRONT_AND_BACK,(ns/1000.0f)*128.0f ); // note OBJ shiniess is 0..1000.
if (material.ambient[3]!=1.0 ||
material.diffuse[3]!=1.0 ||
@@ -887,6 +891,11 @@ ReaderWriterOBJ::ObjOptionsStruct ReaderWriterOBJ::parseOptions(const osgDB::Rea
localOptions.precision = val;
}
}
else if (pre_equals == "NsIfNotPresent")
{
int value = atoi(post_equals.c_str());
localOptions.specularExponent = value ;
}
else if (post_equals.length()>0)
{
obj::Material::Map::TextureMapType type = obj::Material::Map::UNKNOWN;