Added 3dc plugin for reading Arias 3D point clouds.

src/osgPlugins/3dc/GNUmakefile

@@ -0,0 +1,13 @@
+TOPDIR = ../../..
+include $(TOPDIR)/Make/makedefs 
+
+CXXFILES =\
+	ReaderWriter3DC.cpp\
+
+LIBS  += $(OSG_LIBS) $(OTHER_LIBS)
+
+TARGET_BASENAME = 3dc
+include $(TOPDIR)/Make/cygwin_plugin_def
+PLUGIN = $(PLUGIN_PREFIX)$(TARGET_BASENAME).$(PLUGIN_EXT)
+
+include $(TOPDIR)/Make/makerules 

src/osgPlugins/3dc/ReaderWriter3DC.cpp

@@ -0,0 +1,127 @@
+#include <osg/Notify>
+#include <osg/Geode>
+#include <osg/Geometry>
+
+#include <osgDB/FileNameUtils>
+#include <osgDB/Registry>
+
+#include <iostream>
+#include <stdio.h>
+
+
+using namespace osg;
+
+class ReaderWriter3DC : public osgDB::ReaderWriter
+{
+    public:
+        virtual const char* className() { return "3DC point cloud reader"; }
+        
+        virtual bool acceptsExtension(const std::string& extension)
+        {
+            return osgDB::equalCaseInsensitive(extension,"3dc") ||
+                   osgDB::equalCaseInsensitive(extension,"asc");
+        }
+
+        virtual ReadResult readNode(const std::string& fileName, const osgDB::ReaderWriter::Options*)
+        {
+            std::string ext = osgDB::getFileExtension(fileName);
+            if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;
+            
+            std::cout << "try to read file "<<fileName<<std::endl;
+    
+            const int LINE_SIZE = 1024;
+            char line[LINE_SIZE];
+            
+            std::ifstream fin(fileName.c_str());
+            
+            unsigned int num = 0;
+            while (fin)
+            {
+                fin.getline(line,LINE_SIZE);
+                if (line[0]=='#')
+                {
+                    // comment line
+                    cout <<"Comment: "<<line<<std::endl;
+                }
+                else
+                {
+                    ++num;
+                }
+                //std::cout << "["<<std::endl;
+                //std::cout <<line<<std::endl;
+                //std::cout <<"]"<<std::endl;
+            }
+            
+            
+            std::cout << "num="<<num<<std::endl;
+    
+            osg::Geometry* geometry = new osg::Geometry;
+            
+            osg::Vec3Array* vertices = new osg::Vec3Array;
+            osg::Vec3Array* normals = new osg::Vec3Array;
+            osg::UByte4Array* colours = new osg::UByte4Array;
+            //osg::Vec4Array* colours = new osg::Vec4Array;
+            
+            vertices->reserve(num);
+            normals->reserve(num);
+            colours->reserve(num);
+            
+            fin.close();
+            
+            std::ifstream fin2(fileName.c_str());
+            while (fin2)
+            {
+                fin2.getline(line,LINE_SIZE);
+                if (line[0]=='#')
+                {
+                    // comment line
+                    //cout <<"Comment: "<<line<<std::endl;
+                }
+                else if (strlen(line)>0)
+                {
+                    ++num;
+                    
+                    osg::Vec3 pos,normal;
+                    int r,g,b;
+                    
+                    int a = sscanf(line,"%f %f %f %d %d %d %f %f %f",
+                                   &pos.x(),&pos.y(),&pos.z(),
+                                   &r,&g,&b,
+                                   &normal.x(),&normal.y(),&normal.z());
+                                
+                                
+                    if (a)
+                    {            
+                        vertices->push_back(pos);
+                        normals->push_back(normal);
+                        colours->push_back(osg::UByte4(r,g,b,255));
+                        //colours->push_back(osg::Vec4((float)r/255.0f,(float)g/255.0f,(float)b/255.0f,1.0f));
+                        
+                    }
+                }
+
+                
+                //std::cout << "["<<std::endl;
+                //std::cout <<line<<std::endl;
+                //std::cout <<"]"<<std::endl;
+            }
+    
+            geometry->setVertexArray(vertices);
+            geometry->setNormalArray(normals);
+            geometry->setNormalBinding(osg::Geometry::BIND_PER_VERTEX);
+            geometry->setColorArray(colours);
+            geometry->setColorBinding(osg::Geometry::BIND_PER_VERTEX);
+            geometry->addPrimitiveSet(new osg::DrawArrays(GL_POINTS,0,vertices->size()));
+
+            osg::Geode* geode = new osg::Geode;
+            geode->addDrawable(geometry);
+    
+            return geode;
+    
+        }
+    
+};
+
+// now register with Registry to instantiate the above
+// reader/writer.
+osgDB::RegisterReaderWriterProxy<ReaderWriter3DC> g_readerWriter_3DX_Proxy;