Learning meshes

the "pick" tutorial in the SDK is good as far as mesh breakdown.

the "skinned mesh" tutorial is brainheavy but good once you digest it.

and finally Jim Adams has a good tutorial on parsing .X files when your ready to get into the heavy lifting here on gamedev.

Meshes are a bitch to learn

heres 2 functions that i made load and draw. By the way it is setup for lighting but should work normally without it.

its from the sdk basically modified. The "5" means theres 0 -4 spaces for models in the array. I modified it to take an array of meshes.



normal declarations like every other dx9 stuff

quote:

---

LPD3DXMESH myMesh[5];
D3DMATERIAL9* myMeshMaterials[5];
LPDIRECT3DTEXTURE9* myMeshTextures[5];
DWORD myNumMaterials[5];

---

draw mesh

quote:

---

void DrawMesh(int index=0, int keyFrame =-1)
{
for( DWORD i=0; i {
myDevice->SetMaterial( &myMeshMaterials[index] );
myDevice->SetTexture( 0, myMeshTextures[index][i] );
myMesh[index]->DrawSubset( i );
}
}

---

load mesh

quote:

---

void LoadMesh(char mesh[],int index=0)
{

LPD3DXBUFFER pD3DXMtrlBuffer;
D3DXLoadMeshFromX( mesh, D3DXMESH_SYSTEMMEM, myDevice, NULL, &pD3DXMtrlBuffer, NULL, &myNumMaterials[index], &myMesh[index] ) ;
D3DXMATERIAL* d3dxMaterials = (D3DXMATERIAL*)pD3DXMtrlBuffer->GetBufferPointer();
myMeshMaterials[index] = new D3DMATERIAL9[myNumMaterials[index]];
myMeshTextures[index] = new LPDIRECT3DTEXTURE9[myNumMaterials[index]];

for( DWORD i=0; i {
myMeshMaterials[index][i] = d3dxMaterials[i].MatD3D;
myMeshMaterials[index][i].Ambient = myMeshMaterials[index][i].Diffuse;

myMeshTextures[index][i] = NULL;
if( d3dxMaterials[i].pTextureFilename != NULL && lstrlen(d3dxMaterials[i].pTextureFilename) > 0 )
D3DXCreateTextureFromFile( myDevice, d3dxMaterials[i].pTextureFilename, &myMeshTextures[index][i] ) ;
}
pD3DXMtrlBuffer->Release();

DWORD fvf = ( D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_SPECULAR | D3DFVF_TEX1 );

myMesh[index]->CloneMeshFVF( D3DXMESH_MANAGED, fvf, myDevice, &myMesh[index]);
D3DXComputeNormals( myMesh[index], 0);

}

---

and clean up code is

quote:

---

for(int g=0;g<5;g++)
{
if( myMesh[g] != NULL )
myMesh[g]->Release();

if( myMeshMaterials[g] != NULL )
delete[] myMeshMaterials[g];

if( myMeshTextures[g] )
{
for( DWORD i = 0; i < myNumMaterials[g]; i++ )
{
if( myMeshTextures[g][i] )
myMeshTextures[g][i]->Release();
}
delete[] myMeshTextures[g];
}
}

---

Its to hard to bother understanding properly i reakon. If you need to modify something, just learn enough to do that.


also note that ive renamed the usual device etc to things like myDevice

[edited by - johnnyBravo on August 7, 2003 7:56:37 AM]