1 DX font creation Function
HRESULT D3DXCreateFont( __in LPDIRECT3DDEVICE9 pDevice, __in INT Height, __in UINT Width, __in UINT Weight, __in UINT MipLevels, __in BOOL Italic, __in DWORD CharSet, __in DWORD OutputPrecision, __in DWORD Quality, __in DWORD PitchAndFamily, __in LPCTSTR pFacename, __out LPD3DXFONT *ppFont);
HRESULT D3DXCreateFontIndirect( __in LPDIRECT3DDEVICE9 pDevice, __in const D3DXFONT_DESC *pDesc, __out LPD3DXFONT *ppFont);
typedef struct D3DXFONT_DESC { INT Height; UINT Width; UINT Weight; UINT MipLevels; BOOL Italic; BYTE CharSet; BYTE OutputPrecision; BYTE Quality; BYTE PitchAndFamily; TCHAR FaceName;} D3DXFONT_DESC, *LPD3DXFONT_DESC;
It can be seen that the d3dxcreatefont function is exactly the same as the d3dxcreatefontindirect function, except that the d3dxfont_desc structure is used in d3dxcreatefontindirect to replace many messy parameters in d3dxcreatefont.
The following describes in detail the meaning of each parameter:
Height: The font height.
Width: The font width.
Weight: The font weight, ranging from 0 to 1000, that is, the font width, the finest of 0, and the thickest of 1000.
Miplevels: font filtering attribute. If the value is 0 or d3dx_default, the complete mipmap chain is created. If the value is 1, the texture space is mapped to the screen space.
Italic: A boolean variable. True indicates italic, and false indicates not italic.
Charset: character set, which is generally set to the default value default_charset
Outputprecision: the precision of the output text. It refers to the fit of the output text to the font width, height, character direction, line spacing, spacing, and font type. It is usually set to out_default_prects, for details, see wingdi. type defined in H
Quality: output quality, which is also set to default_quality.
Pitchandfamily: spacing and font family, usually set to 0. For details, see wingdi.
# Define default_pitch 0
# Define fixed_pitch 1
# Define variable_pitch 2
# If (winver> = 0x0400)
# Define mono_font 8
# Define ff_dontcare (0 <4)/* don't care or don't know .*/
# Define ff_roman (1 <4)/* variable stroke width, serifed .*/
/* Times Roman, century schoolbook, etc .*/
# Define ff_swiss (2 <4)/* variable stroke width, sans-serifed .*/
/* Helvetica, Swiss, etc .*/
# Define ff_modern (3 <4)/* constant stroke width, serifed or sans-serifed .*/
/* Pica, elite, courier, etc .*/
# Define ff_script (4 <4)/* cursive, etc .*/
# Define ff_decorative (5 <4)/* Old English, etc .*/
In this way, I can freely match the font family and word interval,
Facename: font name, such as "" and "文 "
Example:
// Create the font HR (d3dxcreatefont (m_pdevice, 30,20, 0, d3dx_default, false, default_charset, out_tt_only_precis, default_quality, 81, text (""), & m_pfont )); // draw the font rect; getclientrect (m_hwnd, & rect); tchar Buf [50] = {0}; int nsize = _ stprintf (BUF, text ("FPS: % 0.2f "), getfps (dtime); HR (m_pfont-> drawtext (null, Buf, nsize, & rect, dt_right, d3dcolor_xrgb (2,190,100); rect. top = 100; HR (m_pfont-> drawtext (null, text ("indelible passion forever"),-1, & rect, dt_center, d3dcolor_xrgb (, 90, 100); rect. top = 200; HR (m_pfont-> drawtext (null, text ("arrogant teenager forever"),-1, & rect, dt_center, d3dcolor_xrgb (255,120, 10 )));
2. Create a font function in the corresponding GDI
Createfont and createfontindirect
3. 3D Fonts
The d3dxcreatetext function creates a grid, which is used to draw the corresponding grid when drawing text.
HRESULT D3DXCreateText( __in LPDIRECT3DDEVICE9 pDevice, __in HDC hDC, __in LPCTSTR pText, __in FLOAT Deviation, __in FLOAT Extrusion, __out LPD3DXMESH *ppMesh, __out LPD3DXBUFFER *ppAdjacency, __out LPGLYPHMETRICSFLOAT pGlyphMetrics);
Ptext: the content to be displayed.
Deviation: Maximum string deviation of the TrueType font contour. The value must be a non-negative string deviation equal to a design unit of the original font and generally set to 0.001.
Extrusion: font depth along the negative direction of the Z axis
Ppmesh: returns the created font mesh.
Ppadjacency: returns the information about the adjacent State of the created grid. If not required, you can specify this parameter as null.
Pglyphmetrics: pointer to the lpglyphmetricsfloat type struct, which contains metric data. If this value is not required, set it to null.
We can see that the HDC option is included in the parameters of the function, which is mainly used to select the hfont into the device context and then draw a 3D text grid using the font ., Therefore, we need to first create a font, and then select the font into the device.
You can use the createfont or createfontindirect function mentioned above to create a font.
Example:
// Create the font hfont; hfont hfontold; HDC = createcompatibledc (null); hfont = createfont (500, false, default_charset, out_default_precis, limit, default_quality, default_pitch | ff_dontcare, text (""); hfontold = (hfont) SelectObject (HDC, hfont); d3dxcreatetext (m_pdevice, HDC, text ("innocent"), 0.001f, 0.5f, & m_pfontmesh, null, null); SelectObject (HDC, hfontold); deleteobject (hfont); deletedc (HDC ); // draw the font m_pfontmesh-> drawsubset (0 );
Final display effect:
Program:
