created. Example of use of user defined attributes

apps/sample/trimesh_attribute/trimesh_attribute.cpp

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+
+#include<vcg/simplex/vertexplus/base.h>
+#include<vcg/simplex/vertexplus/component.h>
+#include<vcg/simplex/faceplus/base.h>
+#include<vcg/simplex/faceplus/component.h>
+#include<vcg/complex/trimesh/base.h>
+#include<vcg/complex/trimesh/allocate.h>
+
+class MyFace;
+class MyVertex;
+class MyEdge;   // dummy prototype never used
+class MyVertex  : public vcg::VertexSimp2< MyVertex, MyEdge, MyFace, vcg::vertex::Coord3f,vcg::vertex::Normal3f>{};
+class MyFace    : public vcg::FaceSimp2< MyVertex, MyEdge, MyFace, vcg::face::VertexRef, vcg::face::Normal3f> {};
+
+class MyMesh : public vcg::tri::TriMesh< std::vector<MyVertex>, std::vector<MyFace> > {};
+
+ 
+float Irradiance(MyMesh::VertexType v){
+	// .....
+	return 1.0;
+}
+
+int main()
+{
+  MyMesh m;
+  //...here m is filled
+  
+  // add a per-vertex attribute with type float named "Irradiance"
+  MyMesh::PerVertexAttributeHandle<float> ih = vcg::tri::Allocator<MyMesh>::AddPerVertexAttribute<float> (m,std::string("Irradiance"));
+
+  // add a per-vertex attribute with type float named "Radiosity"   
+  vcg::tri::Allocator<MyMesh>::AddPerVertexAttribute<float> (m,std::string("Radiosity"));
+ 
+  // add a per-vertex attribute with type bool and no name specified
+  MyMesh::PerVertexAttributeHandle<bool> blocked_h = vcg::tri::Allocator<MyMesh>::AddPerVertexAttribute<bool> (m); 
+  
+  MyMesh::VertexIterator vi; int i = 0;
+  for(vi   = m.vert.begin(); vi != m.vert.end(); ++vi,++i){
+   ih[vi]  = Irradiance(*vi);  // [] operator takes a iterator
+   ih[*vi] = Irradiance(*vi);  // or a MyMesh::VertexType object
+   ih[&*vi]= Irradiance(*vi);  // or a pointer to it
+   ih[i]   = Irradiance(*vi);  // or an integer index
+  }
+    
+  // Once created with AddPerVertexAttribute, an handle to the attribute can be obtained as follows
+  MyMesh::PerVertexAttributeHandle<float> rh = vcg::tri::Allocator<MyMesh>::GetPerVertexAttribute<float>(m,"Radiosity");
+
+  // you can query if an attribute is present or not
+  bool hasRadiosity = vcg::tri::HasPerVertexAttribute(m,"Radiosity");
+
+  // you can delete an attibute by name
+  vcg::tri::Allocator<MyMesh>::DeletePerVertexAttribute<float>(m,"Radiosity");
+
+  // you can delete an attibute by handle
+  vcg::tri::Allocator<MyMesh>::DeletePerVertexAttribute<bool>(m,blocked_h);
+}

apps/sample/trimesh_attribute/trimesh_attribute.pro

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+######################################################################
+# Automatically generated by qmake (2.00a) ven 24. giu 14:14:20 2005
+######################################################################
+#  To solve issue related to slash vs. backslash under cygwin try:
+#  env MINGW_IN_SHELL=1 qmake -spec win32-g++ 
+
+TARGET = trimesh_attribute
+LIBPATH += 
+DEPENDPATH += . 
+INCLUDEPATH += . ../../..
+CONFIG += console stl
+TEMPLATE = app
+SOURCES += trimesh_attribute.cpp ../../../wrap/ply/plylib.cpp