colorAnim Plugin shows all vertex colors

Author: Daniel Wickeroth

config/config.daniel.xml

@@ -27,25 +27,17 @@
       <FileType name="fits" plugin="Volume" /> 
     </FileManager>
 
-  
-  
+
+
     <WelcomeMessage value="Welcome to Daniel" />
 
     <Plugin>
-      <MADIconnect value="on">
-        <DataPath value="/home/daniel/data/KeiIto/3neurons" />
-      </MADIconnect>
-
-      <ANARI>
-        <PointCloud radius="0.025" />        
-      </ANARI>
+      <ColorAnim value="on">
+        <FirstModel  value="/home/daniel/data/Horn/surfaces/dynamic/cortex_sample/cortex_001.ply" />
+        <SecondModel value="/home/daniel/data/Horn/surfaces/static/anatomy.ply" />
+        <ThirdModel  value="/home/daniel/data/Horn/surfaces/static/left_electrode.ply" />
+      </ColorAnim>
 
-      <Vrml97>
-        <TransparencyMode value="sorted_blended_alphatest" />
-        <Headlight value="ON" />
-        <Lights value="ON" />
-      </Vrml97>
-      
       <OrientationIndicator value="off">
         <Position x="-700.0" y="0.0" z="-400.0" />
 	      <InvertX value="true" />

src/OpenCOVER/plugins/ukoeln/colorAnim/ColorAnimPlugin.cpp

@@ -185,6 +185,7 @@ bool ColorAnimPlugin::init()
         secondModel = osgDB::readNodeFile(secondModelPath);
         if (secondModel.valid())
         {
+            setupVertexColorMaterial(secondModel.get());
             cover->getObjectsRoot()->addChild(secondModel.get());
             fprintf(stderr, "ColorAnimPlugin: Second model loaded successfully\n");
         }
@@ -202,6 +203,7 @@ bool ColorAnimPlugin::init()
         thirdModel = osgDB::readNodeFile(thirdModelPath);
         if (thirdModel.valid())
         {
+            setupVertexColorMaterial(thirdModel.get());
             cover->getObjectsRoot()->addChild(thirdModel.get());
             fprintf(stderr, "ColorAnimPlugin: Third model loaded successfully\n");
         }
@@ -568,4 +570,43 @@ void ColorAnimPlugin::flipNormals()
     }
 }
 
+void ColorAnimPlugin::setupVertexColorMaterial(osg::Node *node)
+{
+    if (!node)
+        return;
+
+    // Set up material to use vertex colors
+    osg::StateSet *stateSet = node->getOrCreateStateSet();
+    osg::Material *material = new osg::Material();
+    material->setColorMode(osg::Material::AMBIENT_AND_DIFFUSE);
+    stateSet->setAttributeAndModes(material, osg::StateAttribute::ON);
+
+    // If this is a geode, also set the material on each drawable
+    osg::Geode *geode = dynamic_cast<osg::Geode*>(node);
+    if (geode)
+    {
+        for (unsigned int i = 0; i < geode->getNumDrawables(); ++i)
+        {
+            osg::Drawable *drawable = geode->getDrawable(i);
+            if (drawable)
+            {
+                osg::StateSet *drawableStateSet = drawable->getOrCreateStateSet();
+                osg::Material *drawableMaterial = new osg::Material();
+                drawableMaterial->setColorMode(osg::Material::AMBIENT_AND_DIFFUSE);
+                drawableStateSet->setAttributeAndModes(drawableMaterial, osg::StateAttribute::ON);
+            }
+        }
+    }
+
+    // Recursively process child nodes
+    osg::Group *group = node->asGroup();
+    if (group)
+    {
+        for (unsigned int i = 0; i < group->getNumChildren(); ++i)
+        {
+            setupVertexColorMaterial(group->getChild(i));
+        }
+    }
+}
+
 COVERPLUGIN(ColorAnimPlugin)

src/OpenCOVER/plugins/ukoeln/colorAnim/ColorAnimPlugin.h

@@ -91,6 +91,7 @@ class ColorAnimPlugin : public coVRPlugin, public ui::Owner
     void flipNormals();
     float applyInterpolationCurve(float t);
     void setInterpolationMode(InterpolationMode mode);
+    void setupVertexColorMaterial(osg::Node *node);
 };
 
 #endif