reading wavefront-file in array

bonanza

Unregistered

Post: #1

Sep 5, 2007 — 01:38 AM

hi, i like to read an wavefront model in one big array to use it with
glDrawElements...

Code:

v  0.50000000 -0.50000000 -0.50000000

v  0.50000000 -0.50000000  0.50000000

v  0.50000000  0.50000000 -0.50000000

v  0.50000000  0.50000000  0.50000000

vt  0.50000000  0.66666698

vt  0.75000000  0.66666698

vt  0.50000000  0.66666698

vt  0.75000000  0.33333299

vt  0.50000000  0.66666698

vt  0.50000000  0.66666698

vt  0.50000000  0.33333299

vt  0.75000000  0.33333299

vt  0.50000000  0.66666698

vn  1.00000000  0.00000000  0.00000000

vn  1.00000000  0.00000000  0.00000000

vn  1.00000000  0.00000000  0.00000000

vn  1.00000000  0.00000000  0.00000000

g Default

f 3/2/3 4/3/4 1/4/1

f 4/6/4 2/7/2 1/8/1

i like to render them with:

Code:

glEnableClientState( GL_VERTEX_ARRAY );

    glEnableClientState( GL_TEXTURE_COORD_ARRAY );

    glEnableClientState(GL_NORMAL_ARRAY);

    glVertexPointer(   3, GL_FLOAT, 8*sizeof(GLfloat), aVertex );

    glTexCoordPointer( 2, GL_FLOAT, 8*sizeof(GLfloat), &aVertex[3] );

    glNormalPointer(      GL_FLOAT, 8*sizeof(GLfloat), &aVertex[5] );

    glDrawElements( GL_TRIANGLES, numIndexes*3, GL_UNSIGNED_INT, vertexIndicies );

    glDisableClientState(GL_VERTEX_ARRAY);

    glDisableClientState(GL_NORMAL_ARRAY);

    glDisableClientState( GL_TEXTURE_COORD_ARRAY );

the problem is, i have more texturecoordinates then vertices.
the indicies for the normals and texturecoordinates are not the same as for the vertices.
how i can read the file to put it in one array???
any suggestions?

OneSadCookie

Luminary

Posts: 5,125
Joined: 2002.04

Post: #2

Sep 5, 2007 — 02:30 AM

Comes up all the time. Here's a link in: http://www.idevgames.com/forum/archive/i...13440.html

bonanza

Unregistered

Post: #3

Sep 5, 2007 — 02:53 AM

thanks,
a solution can be, to create 6 new v/t/n objects for each f-object

f 3/2/3 4/3/4 1/4/1
f 4/6/4 2/7/2 1/8/1

and use a new index like 0,1,2,3,4,5.
But i get duplicates. right???

OneSadCookie

Luminary

Posts: 5,125
Joined: 2002.04

Post: #4

Sep 5, 2007 — 03:48 AM

that's why you eliminate the duplicates.

bonanza

Unregistered

Post: #5

Sep 5, 2007 — 03:52 AM

ok, but i think searching this, and reordering the indicies are tricky

OneSadCookie

Luminary

Posts: 5,125
Joined: 2002.04

Post: #6

Sep 5, 2007 — 02:33 PM

It's not very difficult, just a bit annoying.

bonanza

Unregistered

Post: #7

Sep 6, 2007 — 05:43 AM

thanks for help

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