Hi,

I wrote a program that uses lib3ds to create a cube and write it to a 3ds file. Each face of the cube is made up of two triangles. I could open the file fine in some viewers but i got the error "improper file format" when opening the file in 3ds Max. My code is below. If anyone has an idea of what I might have done wrong, please help me out.

Thank you,

 Adrian
//------------------------------------------------------------------------------------------------------------------------writer.cpp-------------------------------------

#include <lib3ds/file.h>
#include <lib3ds/camera.h>
#include <lib3ds/mesh.h>
#include <lib3ds/node.h>
#include <lib3ds/material.h>
#include <lib3ds/matrix.h>
#include <lib3ds/vector.h>
#include <lib3ds/light.h>

int _tmain(int argc, _TCHAR* argv[])
{
   //create file object
   Lib3dsFile * file = lib3ds_file_new();
   //node
   Lib3dsNode* node = lib3ds_node_new_object();
   strcpy(node->name, "node0");
   node->parent_id = LIB3DS_NO_PARENT;
   lib3ds_file_insert_node(file, node);

   //mesh
  Lib3dsMesh *mesh = lib3ds_mesh_new("mesh0");
   lib3ds_mesh_new_face_list(mesh, 12);
   //create the face object
    Lib3dsFace* face  = new Lib3dsFace[12];
    mesh->faces = 12;
    int n = 0;
  for(unsigned int i = 0; i < mesh->faces; i++)
  {
      face[i].points[0] = n++;
      face[i].points[1] = n++;
      face[i].points[2] = n++;
  }
  
   mesh->faceL = face;

  
   lib3ds_mesh_new_point_list(mesh,36);

   Lib3dsVector * vertices = new Lib3dsVector[ 3];
   Lib3dsVector v1 = {0.0f, 0.0f, 0.0f};
   Lib3dsVector v2 = {1.0f, 0.0f, 0.0f};
   Lib3dsVector v3 = {1.0f, 0.0f, 1.0f};
   Lib3dsVector v4 = {0.0f, 0.0f, 1.0f};
   Lib3dsVector v5 = {0.0f, 1.0f, 0.0f};
   Lib3dsVector v6 = {1.0f, 1.0f, 0.0f};
   Lib3dsVector v7 = {1.0f, 1.0f, 1.0f};
   Lib3dsVector v8 = {0.0f, 1.0f, 1.0f};
  
   int pIndex = 0;
   //face1
   memcpy(mesh->pointL[pIndex++].pos, &v1, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v2, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v3, sizeof(Lib3dsVector));
 
  
   memcpy(mesh->pointL[pIndex++].pos, &v1, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v4, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v3, sizeof(Lib3dsVector));

   //face2
   memcpy(mesh->pointL[pIndex++].pos, &v5, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v6, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v7, sizeof(Lib3dsVector));

   memcpy(mesh->pointL[pIndex++].pos, &v5, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v8, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v7, sizeof(Lib3dsVector));


   //face3
   memcpy(mesh->pointL[pIndex++].pos, &v1, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v4, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v8, sizeof(Lib3dsVector));

   memcpy(mesh->pointL[pIndex++].pos, &v1, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v5, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v8, sizeof(Lib3dsVector));

   //face4
  memcpy(mesh->pointL[pIndex++].pos, &v2, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v7, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v3, sizeof(Lib3dsVector));

   memcpy(mesh->pointL[pIndex++].pos, &v2, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v7, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v6, sizeof(Lib3dsVector));

   //face5

   memcpy(mesh->pointL[pIndex++].pos, &v1, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v5, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v6, sizeof(Lib3dsVector));

   memcpy(mesh->pointL[pIndex++].pos, &v1, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v2, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v6, sizeof(Lib3dsVector));

   //face 6
   memcpy(mesh->pointL[pIndex++].pos, &v4, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v8, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v7, sizeof(Lib3dsVector));

   memcpy(mesh->pointL[pIndex++].pos, &v4, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v3, sizeof(Lib3dsVector));
   memcpy(mesh->pointL[pIndex++].pos, &v7, sizeof(Lib3dsVector));

   lib3ds_file_insert_mesh(file, mesh);
   
   lib3ds_file_save(file, "C:\\temp\\cube.3ds");
    return 0;
}