Added box clipping and scan options

apps/sample/trimesh_join/trimesh_join.cpp

@@ -7,6 +7,8 @@
 #include<vcg/complex/trimesh/base.h>
 #include<vcg/complex/trimesh/append.h>
 #include<vcg/complex/trimesh/clean.h>
+#include<vcg/complex/trimesh/update/bounding.h>
+
 
 // input output
 #include <wrap/io_trimesh/import_ply.h>
@@ -34,14 +36,42 @@ int main(int argc,char **argv )
 	{
 		printf(		"\n trimesh_join ("__DATE__")\n"
 		        	  "Visual Computing Group I.S.T.I. C.N.R.\n"
-                "Usage: trimesh_join filename.ply [filename.ply | *] \n"
+                "Usage: trimesh_join [opt] filename.ply [filename.ply | *] \n"
+                "where opt can be:\n"
+                "   -b xmin ymin zmin xmax ymax zmax  : \n"
+                "      Returns only mesh composed by faces inside specified bbox\n"
+                "   -t Just scan all the input files computing the total bbox\n"
 			);
 		exit(0);
 	}
 
   MyMesh ml,mr;
-
+  Box3f ClipBB,TotBB;
+  bool ClipFlag=false,MergeFlag=true;
 	int i=1; 
+  // Parsing option loop
+  while(argv[i][0]=='-')
+  {
+    switch(argv[i][1])
+    {
+      case 'b': { 
+              if(argc<i+7) {
+                printf("Error in parsing bbox option");
+  		          exit(0);
+              }
+              ClipBB.min[0]=atof(argv[i+1]); ClipBB.min[1]=atof(argv[i+2]); ClipBB.min[2]=atof(argv[i+3]);
+              ClipBB.max[0]=atof(argv[i+4]); ClipBB.max[1]=atof(argv[i+5]); ClipBB.max[2]=atof(argv[i+6]);
+              i+=6;
+              printf("Clipping incoming meshes with box:\n (%7.4f %7.4f %7.4f) - (%7.4f %7.4f %7.4f)\n",
+                    ClipBB.min[0],ClipBB.min[1],ClipBB.min[2],
+                    ClipBB.max[0],ClipBB.max[1],ClipBB.max[2]);
+              ClipFlag=true;
+          } break;
+    case 't': MergeFlag=false; break;
+    default : printf("Unknown option '%s'\n",argv[i]);
+    }
+  ++i;
+  }
 	while(i<argc)
 		{
 		  if(vcg::tri::io::ImporterPLY<MyMesh>::Open(mr,argv[i])!=0)
@@ -49,8 +79,16 @@ int main(int argc,char **argv )
         printf("Error reading file  %s\n",argv[1]);
 			  exit(0);
 		  }
-      printf("Input mesh %3i vn:%9i fn:%9i\n",i, mr.vn, mr.fn);
+      printf("Input mesh %3i           vn:%9i fn:%9i\n",i, mr.vn, mr.fn);
-      tri::Append<MyMesh,MyMesh>::Mesh(ml,mr); // append mesh mr to ml
+      if(ClipFlag) 
+      { 
+        tri::Clean<MyMesh>::ClipWithBox(mr,ClipBB);
+        printf("              clipped to vn:%9i fn:%9i\n", mr.vn, mr.fn);
+      }
+      tri::UpdateBounding<MyMesh>::Box(mr);
+      TotBB.Add(mr.bbox);
+      
+      if(MergeFlag) tri::Append<MyMesh,MyMesh>::Mesh(ml,mr); // append mesh mr to ml
   		++i;
 		}
   
@@ -60,5 +98,9 @@ int main(int argc,char **argv )
   int dv=tri::Clean<MyMesh>::RemoveDuplicateVertex(ml); 
   printf("Removed %i duplicated vertices\n",dv);
   tri::io::ExporterPLY<MyMesh>::Save(ml,"joined_unif.ply");
+  printf("Final BBox of mesh :\n (%7.4f %7.4f %7.4f) - (%7.4f %7.4f %7.4f)\n",
+                    TotBB.min[0],TotBB.min[1],TotBB.min[2],
+                    TotBB.max[0],TotBB.max[1],TotBB.max[2]);
+       
 }