//
// Creates a polygon mesh
void DirectX::Mesh::createPolygon( float length, unsigned int sides )
{
D3DXCreatePolygon( DirectX::Manager::instance( )->getD3DDev( ), length, sides, &m_mesh, NULL );
update( );
// Register with the manager
DirectX::Manager::instance()->addResource( this );
}
//-----------------------------------------------------------------------------
// Name: RestorePolygonMesh()
// Desc: Initialize device dependent objects.
// Params:
// pd3dDevice
// [in] Pointer to an IDirect3DDevice9 interface, representing the device associated with the created polygon mesh.
// Length
// [in] Length of each side.
// Sides
// [in] Number of sides for the polygon. Value must be greater than or equal to 3.
// ppMesh
// [out] Address of a pointer to the output shape, an ID3DXMesh interface.
//-----------------------------------------------------------------------------
HRESULT CD3DMesh::RestorePolygonMesh(LPDIRECT3DDEVICE9 pd3dDevice,FLOAT Length, UINT Sides, LPD3DXMESH *ppMesh)
{
HRESULT hr;
// create the floor geometry
LPD3DXMESH pMesh;
hr = D3DXCreatePolygon( pd3dDevice, Length, Sides, & pMesh, NULL );
if( FAILED( hr ) )
return hr;
hr = pMesh->CloneMeshFVF( D3DXMESH_SYSTEMMEM, D3DFVF_XYZ | D3DFVF_NORMAL | D3DFVF_TEX1, pd3dDevice, ppMesh );
pMesh->Release();
if( FAILED( hr ) )
return hr;
LPD3DXMESH pMeshFloor = *ppMesh; // rename variable
DWORD dwNumVx = pMeshFloor->GetNumVertices();
struct Vx
{
D3DXVECTOR3 vPos;
D3DXVECTOR3 vNorm;
float fTex[ 2 ];
};
// Initialize its texture coordinates
const int FLOOR_TILECOUNT = 2;
Vx * pVx;
hr = pMeshFloor->LockVertexBuffer( 0, (VOID **) & pVx );
if( FAILED( hr ) )
return hr;
for( DWORD i = 0; i < dwNumVx; ++ i )
{
if( fabs( pVx->vPos.x ) < 0.01 )
{
if( pVx->vPos.y > 0 )
{
pVx->fTex[ 0 ] = 0.0f;
pVx->fTex[ 1 ] = 0.0f;
} else
if( pVx->vPos.y < 0.0f )
{
pVx->fTex[ 0 ] = 1.0f * FLOOR_TILECOUNT;
pVx->fTex[ 1 ] = 1.0f * FLOOR_TILECOUNT;
} else
{
pVx->fTex[ 0 ] = 0.5f * FLOOR_TILECOUNT;
pVx->fTex[ 1 ] = 0.5f * FLOOR_TILECOUNT;
}
} else
if( pVx->vPos.x > 0.0f )
{
pVx->fTex[ 0 ] = 1.0f * FLOOR_TILECOUNT;
pVx->fTex[ 1 ] = 0.0f;
} else
{
pVx->fTex[ 0 ] = 0.0f;
pVx->fTex[ 1 ] = 1.0f * FLOOR_TILECOUNT;
}
++ pVx;
}
pMeshFloor->UnlockVertexBuffer();
return S_OK;
}
