Added osgFX - Marco Jez's special effects nodekit.

2003-08-26 21:17:22 +00:00
parent a782cbad60
commit 2c4c2ad068
22 changed files with 3520 additions and 157 deletions
--- a/src/osgFX/Scribe.cpp
+++ b/src/osgFX/Scribe.cpp
@@ -0,0 +1,99 @@
+#include <osgFX/Scribe>
+#include <osgFX/Registry>
+
+#include <osg/GL>
+#include <osg/PolygonOffset>
+#include <osg/Material>
+#include <osg/LineWidth>
+#include <osg/PolygonMode>
+
+#include <string.h>
+
+using namespace osgFX;
+
+namespace
+{
+
+    // register a prototype for this effect
+    Registry::Proxy proxy(new Scribe);
+
+
+    // default technique class
+    class DefaultTechnique: public Technique {
+    public:
+        DefaultTechnique(osg::Material *wf_mat, osg::LineWidth *wf_lw)
+            : Technique(), wf_mat_(wf_mat), wf_lw_(wf_lw) {}
+
+            bool validate(osg::State &) const
+            {
+                return strncmp((const char*)glGetString(GL_VERSION), "1.1", 3) >= 0;
+            }
+
+    protected:
+
+        void define_passes()
+        {
+            // implement pass #1
+            {
+                osg::ref_ptr<osg::StateSet> ss = new osg::StateSet;
+
+                osg::ref_ptr<osg::PolygonOffset> polyoffset = new osg::PolygonOffset;
+                polyoffset->setFactor(1.0f);
+                polyoffset->setUnits(1.0f);
+                ss->setAttributeAndModes(polyoffset.get(), osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
+
+                addPass(ss.get());
+            }
+
+            // implement pass #2
+            {
+                osg::ref_ptr<osg::StateSet> ss = new osg::StateSet;
+
+                osg::ref_ptr<osg::PolygonMode> polymode = new osg::PolygonMode;
+                polymode->setMode(osg::PolygonMode::FRONT_AND_BACK, osg::PolygonMode::LINE);
+                ss->setAttributeAndModes(polymode.get(), osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
+
+                wf_lw_->setWidth(1);
+                ss->setAttributeAndModes(wf_lw_.get(), osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
+
+                wf_mat_->setColorMode(osg::Material::OFF);
+                wf_mat_->setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4(0, 0, 0, 1));
+                wf_mat_->setAmbient(osg::Material::FRONT_AND_BACK, osg::Vec4(0, 0, 0, 1));
+                wf_mat_->setSpecular(osg::Material::FRONT_AND_BACK, osg::Vec4(0, 0, 0, 1));
+                wf_mat_->setEmission(osg::Material::FRONT_AND_BACK, osg::Vec4(1.0f, 1.0f, 1.0f, 1.0f));
+                ss->setAttributeAndModes(wf_mat_.get(), osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
+
+                ss->setMode(GL_LIGHTING, osg::StateAttribute::OVERRIDE|osg::StateAttribute::ON);
+                ss->setTextureMode(0, GL_TEXTURE_1D, osg::StateAttribute::OVERRIDE|osg::StateAttribute::OFF);
+                ss->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE|osg::StateAttribute::OFF);
+
+                   addPass(ss.get());
+            }
+        }
+
+    private:
+        osg::ref_ptr<osg::Material> wf_mat_;
+        osg::ref_ptr<osg::LineWidth> wf_lw_;
+    };
+
+}
+
+Scribe::Scribe()
+:    Effect(),
+    wf_mat_(new osg::Material),
+    wf_lw_(new osg::LineWidth)
+{
+}
+
+Scribe::Scribe(const Scribe &copy, const osg::CopyOp &copyop)
+:    Effect(copy, copyop),
+    wf_mat_(static_cast<osg::Material *>(copyop(copy.wf_mat_.get()))),
+    wf_lw_(static_cast<osg::LineWidth *>(copyop(copy.wf_lw_.get())))
+{
+}
+
+bool Scribe::define_techniques()
+{
+    addTechnique(new DefaultTechnique(wf_mat_.get(), wf_lw_.get()));
+    return true;
+}