Saving mesh data

Provided that you are using a TriMesh class to store 3D geometry, we will show you how to save it in a file.

Getting ready

We are assuming that you are using a 3D model stored in TriMesh object. Sample application loading 3D geometry can be found in Cinder samples directory in the folder: OBJLoaderDemo.

How to do it…

We will implement saving a 3D mesh data.

1. Include necessary headers:

   #include "cinder/ObjLoader.h"
   #include "cinder/Utilities.h"

2. Implement your keyDown method as follows:

   if( event.getChar() == 's' ) {
     fs::path path = getSaveFilePath(getDocumentsDirectory() / fs::path("mesh.trimesh") );
     if( ! path.empty() ) {
       mMesh.write( writeFile( path ) );
           }
   }
     else if( event.getChar() == 'o' ) {
     fs::path path = getSaveFilePath(getDocumentsDirectory() / fs::path("mesh.obj") );
     if( ! path.empty() ) {
     ObjLoader::write( writeFile( path ), mMesh );
       }
   }

How it works…

In Cinder we are using a TriMesh class to store 3D geometry. Using TriMesh we can store and manipulate...