Spirte 是 Direct3D 專門描繪 2D 圖像的物件。
建立Sprite [教學][範例] Direct3D Sprite (2D)
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| 關鍵字: D3DXCreateSprite 範例碼: LPD3DXSPRITE pSprite; D3DXCreateSprite(pDevice,&pSprite); |
描繪Sprite
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| 關鍵字: ID3DXSprite::Begin ID3DXSprite::End ID3DXSprite::Draw 範例碼: LPDIRECT3DTEXTURE9 pTexture; // 載入2D影像 D3DXCreateTextureFromFileEx(pDevice, TEXT("demo.png"), 100, 100, 1, 0, D3DFMT_UNKNOWN, D3DPOOL_DEFAULT, D3DX_DEFAULT, D3DX_DEFAULT, 0, NULL, NULL, &pTexture); // 描繪 RECT SrcRect = RECT(0, 0, 50, 50); // 材質的矩形區域 D3DXVECTOR3 Center = D3DXVECTOR3(0, 0, 0); // 材質的矩形區域的中心點 D3DXVECTOR3 Position = D3DXVECTOR3(30.0f, 20.0f); // 描繪的位置 D3DCOLOR Color = D3DCOLOR_ARGB(255, 255, 255, 255); // 色彩遮罩 pSprite->Begin(D3DXSPRITE_ALPHABLEND); pSprite->Draw(pTexture, &SrcRect, &Center, &Position, Color); pSprite->End(); |
旋轉與縮放
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| 關鍵字: D3DXMatrixTransformation2D ID3DXSprite::SetTransform 範例碼: pSprite->Begin(D3DXSPRITE_ALPHABLEND); D3DXVECTOR2 Translation = D3DXVECTOR2(200.0f,50.0f); // 新的原點 D3DXVECTOR2 RotationCenter = D3DXVECTOR2(50.0f,50.0f); // 旋轉中心 int Rotation = 45; // 旋轉角度 D3DXVECTOR2 Scaling(1.0f,1.0f); // 縮放比例 D3DXMATRIX Matrix; // 座標轉換矩陣 D3DXMatrixTransformation2D(&Matrix, NULL, 0.0, &Scaling, &RotationCenter, D3DXToRadian(Rotation), &Translation); pSprite->SetTransform(&Matrix); [教學][範例] Direct3D Sprite (2D) RECT SrcRect; SrcRect.left = 0; SrcRect.top = 0; SrcRect.right = SrcRect.left + 100; SrcRect.bottom = SrcRect.top + 100; D3DXVECTOR3 Center = D3DXVECTOR3(0.0f, 0.0f, 0.0f); D3DXVECTOR3 Position = D3DXVECTOR3(0.0f, 0.0f, 0.0f); pSprite->Draw(pTexture, &SrcRect, &Center, &Position, D3DCOLOR_ARGB(255,255,255,255)); // 復原 座標轉換設定 Translation = D3DXVECTOR2(0.0f, 0.0f); RotationCenter = D3DXVECTOR2(0.0f, 0.0f); Rotation = 0; Scaling = D3DXVECTOR2(1.0f, 1.0f); D3DXMatrixTransformation2D(&Matrix, NULL, 0.0, &Scaling, &RotationCenter, D3DXToRadian(Rotation), &Translation); pSprite->SetTransform(&Matrix);RECT SrcRect = RECT(0, 0, 50, 50); pSprite->End(); |
描繪文字
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| 關鍵字: D3DXFONT_DESC D3DXCreateFontIndirect LPD3DXFONT LPD3DXFONT::DrawText 範例碼: LPD3DXFONT pFont; // Direct3D Font // 建立 Direct3D Font HDC hdc; D3DXFONT_DESC FontParam; ZeroMemory(&FontParam, sizeof(FontParam)); hdc = GetDC(0); FontParam.Height = -MulDiv(9, GetDeviceCaps(hdc, LOGPIXELSY), 72);; FontParam.CharSet = DEFAULT_CHARSET; StrCpy(FontParam.FaceName, TEXT("新細明體")); ReleaseDC(0, hdc); D3DXCreateFontIndirect(pD3DD, &FontParam, &pFont); // 描繪 pSprite->Begin(D3DXSPRITE_ALPHABLEND); D3DCOLOR Color = D3DCOLOR_ARGB(255,255,255,255); RECT Rect; Rect.left = 200; Rect.top = 100; Rect.right = Rect.left + 300; Rect.bottom = Rect.top + 50; pFont->DrawText(pSprite, TEXT("Hello World! 您好！"), -1, &Rect, 0, Color); [教學][範例] Direct3D Sprite (2D) pSprite->End(); |
