コード:
//-----------------------------------------------------------------------------
// Name: InitGeometry()
// Desc: Load the mesh and build the material and texture arrays
//-----------------------------------------------------------------------------
// ３Ｄモデル作成 ｘファイルの読み込み等
// マテリアルは、D3DXLoadMeshFromX関数で取得したマテリアルバッファから格納
// テクスチャは、D3DXCreateTextureFromFileで取得する。
HRESULT InitGeometry()
{
LPD3DXBUFFER pD3DXMtrlBuffer;
// D3DXLoadMeshFromX()によってｘファイルを読み込む
if( FAILED( D3DXLoadMeshFromX( "meka.x", D3DXMESH_SYSTEMMEM,
g_pd3dDevice, NULL,
&pD3DXMtrlBuffer, NULL, &g_dwNumMaterials,
&g_pMesh ) ) )
{
// If model is not in current folder, try parent folder
// 同一フォルダにｘファイルが無い場合に探す
if( FAILED( D3DXLoadMeshFromX( "..\\Tiger.x", D3DXMESH_SYSTEMMEM,
g_pd3dDevice, NULL,
&pD3DXMtrlBuffer, NULL, &g_dwNumMaterials,
&g_pMesh ) ) )
{
MessageBox(NULL, "Could not find tiger.x", "Meshes.exe", MB_OK);
return E_FAIL;
}
}
// We need to extract the material properties and texture names from the
// pD3DXMtrlBuffer
D3DXMATERIAL* d3dxMaterials = (D3DXMATERIAL*)pD3DXMtrlBuffer->GetBufferPointer();
g_pMeshMaterials = new D3DMATERIAL9[g_dwNumMaterials];
if( g_pMeshMaterials == NULL )
return E_OUTOFMEMORY;
g_pMeshTextures = new LPDIRECT3DTEXTURE9[g_dwNumMaterials];
if( g_pMeshTextures == NULL )
return E_OUTOFMEMORY;
for( DWORD i=0; i<g_dwNumMaterials; i++ )
{
// Copy the material
g_pMeshMaterials[i] = d3dxMaterials[i].MatD3D;
// Set the ambient color for the material (D3DX does not do this)
g_pMeshMaterials[i].Ambient = g_pMeshMaterials[i].Diffuse;
g_pMeshTextures[i] = NULL;
if( d3dxMaterials[i].pTextureFilename != NULL &&
lstrlen(d3dxMaterials[i].pTextureFilename) > 0 )
{
// Create the texture
if( FAILED( D3DXCreateTextureFromFile( g_pd3dDevice,
d3dxMaterials[i].pTextureFilename,
&g_pMeshTextures[i] ) ) )
{
// If texture is not in current folder, try parent folder
const TCHAR* strPrefix = TEXT("..\\");
TCHAR strTexture[MAX_PATH];
StringCchCopy( strTexture, MAX_PATH, strPrefix );
StringCchCat( strTexture, MAX_PATH, d3dxMaterials[i].pTextureFilename );
// If texture is not in current folder, try parent folder
if( FAILED( D3DXCreateTextureFromFile( g_pd3dDevice,
strTexture,
&g_pMeshTextures[i] ) ) )
{
MessageBox(NULL, "Could not find texture map", "Meshes.exe", MB_OK);
}
}
}
}
// Done with the material buffer
pD3DXMtrlBuffer->Release();
return S_OK;
}
//-----------------------------------------------------------------------------
// Name: Cleanup()
// Desc: Releases all previously initialized objects
//-----------------------------------------------------------------------------
VOID Cleanup()
{
if( g_pMeshMaterials != NULL )
delete[] g_pMeshMaterials;
if( g_pMeshTextures )
{
for( DWORD i = 0; i < g_dwNumMaterials; i++ )
{
if( g_pMeshTextures[i] )
g_pMeshTextures[i]->Release();
}
delete[] g_pMeshTextures;
}
if( g_pMesh != NULL )
g_pMesh->Release();
if( g_pd3dDevice != NULL )
g_pd3dDevice->Release();
if( g_pD3D != NULL )
g_pD3D->Release();
}
//-----------------------------------------------------------------------------
// Name: SetupMatrices()
// Desc: Sets up the world, view, and projection transform matrices.
//-----------------------------------------------------------------------------
// ここではワールド変換、カメラと注視点（ビュー変換）、射影変換を行うための行列を作成し、
// Direct3Dデバイスに渡す。
VOID SetupMatrices()
{
// Set up world matrix
D3DXMATRIXA16 matWorld1, matWorld2;
// 平行移動行列を作り位置を変える. mx,my,mz は、位置（座標）を格納する変数 移動処理に用いる
D3DXMatrixTranslation( &matWorld1, mx, my, mz );
// 回転行列 引数にangle を渡し、回転処理に用いる
D3DXMatrixRotationY( &matWorld2, angle );//timeGetTime()/1000.0f );
matWorld2 *= matWorld1;
g_pd3dDevice->SetTransform( D3DTS_WORLD, &matWorld2 );
// Set up our view matrix. A view matrix can be defined given an eye point,
// a point to lookat, and a direction for which way is up. Here, we set the
// eye five units back along the z-axis and up three units, look at the
// origin, and define "up" to be in the y-direction.
D3DXVECTOR3 vEyePt( 0.0f, 15.0f,-15.0f );
D3DXVECTOR3 vLookatPt( 0.0f, 3.0f, 0.0f );
D3DXVECTOR3 vUpVec( 0.0f, 5.0f, 0.0f );
D3DXMATRIXA16 matView;
D3DXMatrixLookAtLH( &matView, &vEyePt, &vLookatPt, &vUpVec );
g_pd3dDevice->SetTransform( D3DTS_VIEW, &matView );
// For the projection matrix, we set up a perspective transform (which
// transforms geometry from 3D view space to 2D viewport space, with
// a perspective divide making objects smaller in the distance). To build
// a perpsective transform, we need the field of view (1/4 pi is common),
// the aspect ratio, and the near and far clipping planes (which define at
// what distances geometry should be no longer be rendered).
D3DXMATRIXA16 matProj;
D3DXMatrixPerspectiveFovLH( &matProj, D3DX_PI/4, 1.0f, 1.0f, 100.0f );
g_pd3dDevice->SetTransform( D3DTS_PROJECTION, &matProj );
}
//-----------------------------------------------------------------------------
// Name: Render()
// Desc: Draws the scene
//-----------------------------------------------------------------------------
VOID Render()
{
// Clear the backbuffer and the zbuffer
g_pd3dDevice->Clear( 0, NULL, D3DCLEAR_TARGET|D3DCLEAR_ZBUFFER,
D3DCOLOR_XRGB(0,0,0), 1.0f, 0 );
// Begin the scene
if( SUCCEEDED( g_pd3dDevice->BeginScene() ) )
{
// Setup the world, view, and projection matrices
SetupMatrices();
// Meshes are divided into subsets, one for each material. Render them in
// a loop
for( DWORD i=0; i<g_dwNumMaterials; i++ )
{
// Set the material and texture for this subset
g_pd3dDevice->SetMaterial( &g_pMeshMaterials[i] );
g_pd3dDevice->SetTexture( 0, g_pMeshTextures[i] );
// Draw the mesh subset
g_pMesh->DrawSubset( i );
}
// End the scene
g_pd3dDevice->EndScene();
}
// Present the backbuffer contents to the display
g_pd3dDevice->Present( NULL, NULL, NULL, NULL );
}