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// File: D3DFont.h
// Desc: Texture-based font class
// Copyright (c) Microsoft Corporation. All rights reserved.

ifndef D3DFONT_H
define D3DFONT_H
include <tchar.h>
include <D3D9.h>

// Font creation flags
define D3DFONT_BOLD        0x0001
define D3DFONT_ITALIC      0x0002
define D3DFONT_ZENABLE     0x0004

// Font rendering flags
define D3DFONT_CENTERED_X  0x0001
define D3DFONT_CENTERED_Y  0x0002
define D3DFONT_TWOSIDED    0x0004
define D3DFONT_FILTERED    0x0008

// Name: class CD3DFont
// Desc: Texture-based font class for doing text in a 3D scene.
<h4 align=right text=red> CD3DFont</h4><hr>
  class CD3DFont
    TCHAR   m_strFontName[80];            // Font properties
    DWORD   m_dwFontHeight;
    DWORD   m_dwFontFlags;

    LPDIRECT3DDEVICE9       m_pd3dDevice; // A D3DDevice used for rendering
    LPDIRECT3DTEXTURE9      m_pTexture;   // The d3d texture for this font
    LPDIRECT3DVERTEXBUFFER9 m_pVB;        // VertexBuffer for rendering text
    DWORD   m_dwTexWidth;                 // Texture dimensions
    DWORD   m_dwTexHeight;
    FLOAT   m_fTextScale;
    FLOAT   m_fTexCoords[128-32][4];
    DWORD   m_dwSpacing;                  // Character pixel spacing per side

    // Stateblocks for setting and restoring render states
    LPDIRECT3DSTATEBLOCK9 m_pStateBlockSaved;
    LPDIRECT3DSTATEBLOCK9 m_pStateBlockDrawText;

    // 2D and 3D text drawing functions
    HRESULT DrawText( FLOAT x, FLOAT y, DWORD dwColor, 
                      const TCHAR* strText, DWORD dwFlags=0L );
    HRESULT DrawTextScaled( FLOAT x, FLOAT y, FLOAT z, 
                            FLOAT fXScale, FLOAT fYScale, DWORD dwColor, 
                            const TCHAR* strText, DWORD dwFlags=0L );
    HRESULT Render3DText( const TCHAR* strText, DWORD dwFlags=0L );
    // Function to get extent of text
    HRESULT GetTextExtent( const TCHAR* strText, SIZE* pSize );

    // Initializing and destroying device-dependent objects
    HRESULT InitDeviceObjects( LPDIRECT3DDEVICE9 pd3dDevice );
    HRESULT RestoreDeviceObjects();
    HRESULT InvalidateDeviceObjects();
    HRESULT DeleteDeviceObjects();

    // Constructor / destructor
    CD3DFont( const TCHAR* strFontName, DWORD dwHeight, DWORD dwFlags=0L );


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