Countvertices and Counttriangles don't work?

For some reason, however I code it, it always returns zero.

Maybe there are zero vertices/tris in the surface you are checking...

Try this:

function DebugMeshCounts(mesh)
n_surfs = countsurfaces(mesh)
debuglog "surfaces: "+n_surfs
for s = 1 to n_surfs
surf = getsurface(mesh,s)
n_verts = countvertices(surf)
n_tris = counttriangles(surf)
debuglog "surface "+s+" verts: "+n_verts+" tris: "+n_tris
t_verts = t_verts+n_verts
t_tris = t_tris+n_tris
next
debuglog "total verts: "+t_verts
debuglog "total tris: "+t_tris
end function

Thanks. I just found a funny thing though which explains it all. I'm using AddMesh to add one to another, and it always seems to add the mesh to surface 2 of the destination mesh. I didn't even create surface 2.

If the mesh you are adding has different surface attributes to the target mesh Blitz will create new surfaces in the target mesh.

Mmmm... what attributes could they be? I haven't even done anything with the surface. I created a surface, then used AddMesh straight away. Maybe I need to PaintSurface the first surface?

[edit] No, that doesn't work. Even if I don't create surface 1, using AddMesh results in 2 surfaces.

Are you saying you have a completely empty mesh and you add a mesh to this that has only one surface and you end up with two surfaces? (that would be weird). Or does the mesh you are adding to already have a surface? If it does and the two surfaces have been painted with the same brush then I would expect the surfaces to be merged, unless of course the vertex limit would be exceeded in which case I would expect a second surface to be created. If you have not painted both the surfaces though maybe they are being created with different attributes or some attributes are undefined. I have not tried that but it would not suprise me.

Check out this example, it may clear things up, then again lol

Graphics3D 800,600

mesh=CreateMesh()
    s1=CountSurfaces(mesh)

surf=CreateSurface(mesh)
    s2=CountSurfaces(mesh)

cube=CreateCube()
AddMesh cube,mesh
    s3=CountSurfaces(mesh)

sphere=CreateSphere()
brush=CreateBrush(255,0,0)
PaintMesh sphere,brush
AddMesh sphere,mesh
    s4=CountSurfaces(mesh)


While Not KeyHit(1)
Text 0,0,"Surfcount of mesh "+s1+" because we haven't made any surfaces yet"
Text 0,10,"Surfcount after creating a surface "+s2+" we just created one surface"
Text 0,20,"Surfcount after addmeshing the cube "+s3+" the cube has the same brush properties as the empty surface"
Text 0,30,"Surfcount after addmeshing the sphere "+s4+" the sphere has different brush properties to the cube"
Flip
Wend

That's what I thought. I've been using the same brush though so I don't know what's up. Also I am adding the mesh to a mesh with no surfaces, and still getting 2. I need to really take a good look at my code.