Hey there,

I am trying to import my own 3d format into the engine and save out a .mesh.

My approach is to load up all vertices, faces, etc... populate a Mshb... then use the Mshb.save to put it where I want to...

( I realize I could use the mesh editor and other programs to convert.. etc.. but there are reasons why I need to do this)

Im a bit stuck at 'populate a Mshb'....

I see there are addVtx, addTri, addQuad functions...

Do I need to use a create function first?
I do not have a list of edges - only triangles, quads, vertexes, texcoords.. will I need edges or can it generate?

Can you give me a little example of where to start on this?

Thanks!

Hi, you don't need edges,

you can set Mshb like this:

Perfect - just what I needed to know...

Thanks again for the fast response!

Hmm - Where/how do I set the material so it will be saved in the .mesh file?

( so far so good btw )

For this you would need to use a Mesh (and then use the Mshb which is inside the Mesh)

Mesh mesh;
mesh.create(1); // create 1 part inside the mesh

MeshPart &part=mesh.part(0); // access first part

Mshb &mshb=part.base; // access the base of the part
//set mshb here

//set part properties here:
part.material[0]=Materials(..);

// finalize the mesh building
mesh.setRender().setBox();
mesh.save(..);

Hey there... Getting very close on this... ran into this issue tho:

Adding polys that are neither tris or quads...

I'm figuring I'll use the triangulate function, but not sure how I can add these to the existing mshb w/o causing issues with the passed vertex, tri, and quad counts

Can I bother you to point the way?

Thanks

you can use a helper Mshb:
Mshb mshb_triangulated; // set it using Triangulate function from polys only (>=5 vertices count)
then add the 'mshb_triangulated' to the Mshb which you've already created from triangles and quads
Mshb &base=part.base;
base+=mshb_triangulated;

Hey there... this is working perfectly for gemotry, but it causes the texture coordinates to be lost ( since triangulate doest have those coords..)

Any way to do this while keeping texture coords?

please use the 'Triangulate' version which uses Vtx3D instead of a single Vec position

Perfect. Just perfect...

Thanks!

Allrighty.... on to materials...

I have the materials loading, and rendering properly... however, when I save the mesh.. and load it into mesh editor.. the materials do not show.. texture coords are there..

I'm setting the material by using part.setMaterial( &mMaterials[0] )..

Any idea why they arent saving in the .mesh file?

Thanks!

Another material question.. might be related to the above...

When I render the mesh after importing.. the texture coords are not quite right... ( appear to be scaled in )
When I save the mesh out.. and look at it in mesh editor... the texture coords are correct...

Ideas?

for saving the material file name you need to assign a material created from the 'Materials' cache to the mesh.

as for the second - texture scaling, I don't know

Wicked - Solved the textures... ( my material index was off by 1.. coords were fine!)

Now.. working on building a .phys file from the mesh...

Reading through Phys_part.h this looks like how I should be doing it.. but it is crashing...

(eMesh is a 'Mesh')

Phys phys;
phys.create(eMesh.parts());
for (int p=0;p<eMesh.parts();p++)
{
PhysPart &pp = phys.part(p);
MeshPart &part = eMesh.part(p);
Mshb &em = part.base;
pp.createMesh(em);
}

I've treid using PhysPart &pp = phys.New() w/o calling phys.create(...) also...

Where is my mistake?

(Its got something to do with the createMesh function im sure... when I use create(box).. it works)

Thanks!

I guess you should create the Physics first at the program start
Physics.create()