Creating A Mesh Using Mfnmesh

[ahgoh7]

Hi guys!

I'm wondering if how a mesh is being created using the API

HEre's an example of my code:

                     MFnTransform Transform;
		 MObject x = Transform.create();
		 
		 MObject mesh;
		 mesh = meshFn.create(numVertices, numPolygons, parray, faceCount, faceconnect, x, &status);

When I do a check on the status: I got this --> (kInvalidParameter): value not in valid range

Which parameter exactly is the value referring to?

A check on the MayaAPI documentation mention that when status = kInvalidParameter

One of the following parameter errors

* Array length does not match given item count
* parentOrOwner was not valid
* There was no model present to add the object to

I am also wondering if I got the parentOrOwner correctly by creating a new transform node, x, as of the above example.

[rob-bateman]

it's impossible to tell which of your params is invalid unless you actually show the data. The parent xform is fine though.

The faceCounts should be an array with 1 entry per face (ie, if all tris, then each entry would be 3). The faceconnects should be an array which should be the same size as the sum of all faceCounts. ie :

FaceCounts[] = {3};
FaceConnects[] = {0,1,2};
numVertices=3;
numFaces=1;

the parray would therefore need 3 points...

[ahgoh7]

I'm trying to create a simple mesh of a cube

based of the attributes given in the maya help file
these are the values for which i entered :

int numV = 8; // number of vertices
int numP = 6; // number of polygons

Varray :
[
0: [-1, -1, -1, 0],
1: [1, -1, -1, 1],
2: [1, -1, 1, 2],
3: [-1, -1, 1, 3],
4: [-1, 1, -1, 4],
5: [-1, 1, 1, 5],
6: [1, 1, 1, 6],
7: [1, 1, -1, 7]
]

PolyCount : [4, 4, 4, 4, 4, 4]

PolyConnects : [0, 1, 2, 3, 4, 5, 6, 7, 3, 2, 6, 5, 0, 3, 5, 4, 0, 4, 7, 1, 1, 7, 6, 2]

I still got the error of : (kInvalidParameter): value not in valid range
Is my parameters values wrong?

in the scene, i only got a transform1 node. ( i guess this is through the command i have in the first post which is , x. )

[mkmage]

oh the number of vertices is as this.

times the number of vertex by 3. because there is an x,y and z for each vertex. so 8 vertices would actually be 24 or if u did put info into MPointArray you can just pass in MpointArray points.length() as the vertices argument

Also the number of indices is the total ammount. so if you got 4 each for 6 indices. you input 4*6 into indices. hope this helps.