[Plib-users] Texturing a triangle

[D L. <ea...@no...>]

Hi all,

I'm having trouble applying a texture to a triangle.  All I get is an
overall colour that looks like it might be the averaged texture
colour.  I'm sure I'm doing something very simple wrong but I just
can't see it.

The code snippet is here - I just added it to the tux example code.

ssgTexture *texture = new ssgTexture("wood.rgb");
ssgSimpleState *state = new ssgSimpleState;
state->setTexture(texture);

    state->enable( GL_TEXTURE_2D );

      // Allocate ssg structure
    ssgVertexArray   *vl = new ssgVertexArray( 3 );
    ssgNormalArray   *nl = new ssgNormalArray( 3 );
    ssgTexCoordArray *tl = new ssgTexCoordArray( 3 );
    ssgColourArray   *cl = new ssgColourArray( 3 );

    sgVec4 color;
    sgSetVec4( color, 1.0, 0.0, 0.0, 1.0 );
    cl->add( color );
    cl->add( color );
    cl->add( color );


    sgVec3 tmpvec;
    sgSetVec3( tmpvec, -50.0, -10.0, 0.0 );
    vl->add( tmpvec );
    sgSetVec3( tmpvec, 50.0, -10.0, 0.0 );
    vl->add( tmpvec );
    sgSetVec3( tmpvec, 0.0, 50.0, 0.0 );
    vl->add( tmpvec );

    // Add normals
    sgSetVec3( tmpvec, 0.0, 0.0, 1.0 );
    nl->add(tmpvec);
    nl->add(tmpvec);
    nl->add(tmpvec);

   // Add texture coordinates
    sgVec2 texvec;
    sgSetVec2(texvec,0.0,0.0);
    sgSetVec2(texvec,1.0,0.0);
    sgSetVec2(texvec,0.5,1.0);
    tl->add(texvec);
    tl->add(texvec);
    tl->add(texvec);

  ssgLeaf *leaf = new ssgVtxTable ( GL_TRIANGLES, vl, nl, tl, NULL );
  leaf->setState(state);

  penguin  -> addKid ( tux_obj  ) ;
  pedestal -> addKid ( leaf  ) ;


I just can't see what I'm missing / doing wrong :-(

Cheers - Dave

--
David Luff
Engines Research Group
University of Nottingham
0115-9513814
dav...@no...