101 lines
3.2 KiB
C++
101 lines
3.2 KiB
C++
#include <osgFX/Scribe>
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#include <osgFX/Registry>
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#include <osg/GL>
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#include <osg/PolygonOffset>
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#include <osg/Material>
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#include <osg/LineWidth>
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#include <osg/PolygonMode>
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#include <string.h>
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using namespace osgFX;
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namespace
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{
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// register a prototype for this effect
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Registry::Proxy proxy(new Scribe);
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// default technique class
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class DefaultTechnique: public Technique {
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public:
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DefaultTechnique(osg::Material *wf_mat, osg::LineWidth *wf_lw)
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: Technique(), wf_mat_(wf_mat), wf_lw_(wf_lw) {}
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bool validate(osg::State &) const
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{
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return strncmp((const char*)glGetString(GL_VERSION), "1.1", 3) >= 0;
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}
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protected:
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void define_passes()
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{
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// implement pass #1
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{
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osg::ref_ptr<osg::StateSet> ss = new osg::StateSet;
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osg::ref_ptr<osg::PolygonOffset> polyoffset = new osg::PolygonOffset;
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polyoffset->setFactor(1.0f);
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polyoffset->setUnits(1.0f);
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ss->setAttributeAndModes(polyoffset.get(), osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
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addPass(ss.get());
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}
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// implement pass #2
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{
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osg::ref_ptr<osg::StateSet> ss = new osg::StateSet;
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osg::ref_ptr<osg::PolygonMode> polymode = new osg::PolygonMode;
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polymode->setMode(osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::LINE);
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ss->setAttributeAndModes(polymode.get(), osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
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ss->setAttributeAndModes(wf_lw_.get(), osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
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ss->setAttributeAndModes(wf_mat_.get(), osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
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ss->setMode(GL_LIGHTING, osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
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ss->setTextureMode(0, GL_TEXTURE_1D, osg::StateAttribute::OVERRIDE|osg::StateAttribute::OFF);
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ss->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE|osg::StateAttribute::OFF);
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addPass(ss.get());
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}
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}
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private:
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osg::ref_ptr<osg::Material> wf_mat_;
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osg::ref_ptr<osg::LineWidth> wf_lw_;
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};
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}
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Scribe::Scribe()
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: Effect(),
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wf_mat_(new osg::Material),
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wf_lw_(new osg::LineWidth)
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{
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wf_lw_->setWidth(1.0f);
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wf_mat_->setColorMode(osg::Material::OFF);
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wf_mat_->setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4(0.0f, 0.0f, 0.0f, 1.0f));
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wf_mat_->setAmbient(osg::Material::FRONT_AND_BACK, osg::Vec4(0.0f, 0.0f, 0.0f, 1.0f));
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wf_mat_->setSpecular(osg::Material::FRONT_AND_BACK, osg::Vec4(0.0f, 0.0f, 0.0f, 1.0f));
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wf_mat_->setEmission(osg::Material::FRONT_AND_BACK, osg::Vec4(1.0f,1.0f,1.0f,1.0f));
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}
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Scribe::Scribe(const Scribe ©, const osg::CopyOp ©op)
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: Effect(copy, copyop),
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wf_mat_(static_cast<osg::Material *>(copyop(copy.wf_mat_.get()))),
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wf_lw_(static_cast<osg::LineWidth *>(copyop(copy.wf_lw_.get())))
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{
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}
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bool Scribe::define_techniques()
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{
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addTechnique(new DefaultTechnique(wf_mat_.get(), wf_lw_.get()));
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return true;
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}
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