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How to rotate font with wglUseFontBitmaps ?

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joseph74

Betreff des Beitrags: How to rotate font with wglUseFontBitmaps ?

Verfasst: Di Apr 19, 2005 10:42

DGL Member

Registriert: Mi Mai 12, 2004 08:40
Beiträge: 4

hi,
i have problem with fonts !
How to rotate font with wglUseFontBitmaps ?

Code:

font := CreateFont(-24,                         
                      0,                                  
                      0,                                  // < ------ escapement no work !!!!!
                      0,                                  // <--------orientation no work !!!!!
                      FW_BOLD,                   
                      0,                                  
                      0,                                  
                      0,                                 
                      ANSI_CHARSET,                       
                      OUT_TT_PRECIS,                      
                      CLIP_DEFAULT_PRECIS,                
                      ANTIALIASED_QUALITY,                
                      FF_DONTCARE or DEFAULT_PITCH,      
                      'Courier New');               
  SelectObject(h_dc,font);                              
  wglUseFontBitmaps(h_dc,32,96,base);                    
 

help me !!!!!

thanks

Moderiert von Lossy eX: Pascal Tags added

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Lossy eX

Betreff des Beitrags:

Verfasst: Di Apr 19, 2005 11:27

DGL Member

Registriert: Do Dez 05, 2002 10:35
Beiträge: 4234
Wohnort: Dortmund

I don't know if it possible. I've never tryed out. But BitmapFonts are not very flexible. It's better you use Texturefonts. There where normally polygons with some parts of an textur they contained a complete list of chars. Then it's possible to rotate the text dynamically.

I've made an class that contains this functionality. But at this moment i dosn't uploaded the generation tool. But i can do it.

glText.pas with Font classes (TglTextureText is intresting for you)
glBitmap.pas where needed.

You also need our OpenGL Header.

Dateianhänge:

Dateikommentar: Tahoma sample font until i uploaded the generator.

tahoma.zip [4.6 KiB]
287-mal heruntergeladen

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joseph74

Betreff des Beitrags:

Verfasst: Mi Apr 20, 2005 09:31

DGL Member

Registriert: Mi Mai 12, 2004 08:40
Beiträge: 4

thanks for your answer !
i am beginer.
I can find some example?

thanks.

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Lossy eX

Betreff des Beitrags:

Verfasst: Mi Apr 20, 2005 11:12

DGL Member

Registriert: Do Dez 05, 2002 10:35
Beiträge: 4234
Wohnort: Dortmund

Creating Font

Code:

  Font := TglTextureText.Create(); // Create Fontclass
  Font.Texture := TglBitmap2D.Create();  // Create and Assign Fonttexture
  Font.Texture.LoadFromFile('Tahoma.bmp');  // Load Fonttexture
  Font.Texture.SetFilter(GL_NEAREST, GL_NEAREST);  // No Texturefiltering
  Font.Texture.BuildMipMaps := False; // No MipMaps
  Font.Texture.TextureFormat := tf32Bit; // 32 Bits color Delpth. Also could be tf16. But tfCompressed could have bad quality with some fonts
  Font.Texture.GenTexture;  // Create OpenGL Texture
  Font.UseAlphaFunc := True;  // using Alphafunc when drawing Font
  Font.UseBlendFunc := True;  // using Blendfunc when drawing Font
  Font.ReadCharWidthsFromIni('Tahoma.ini', 'Char Widths');  // Read char widths from ini
  Font.BuildFont;  // Generate Displaylists with chars

Destroying Font

Code:

  Font.Texture.Free;
Font.Free;

Texture can be shared so you must create and free it separately.

Drawing with Font

Code:

 
  glColor;
  glPushMatrix;
    glTranslate;
    Font.PrintText('Text');
  glPopMatrix;
 

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joseph74

Betreff des Beitrags:

Verfasst: Di Apr 26, 2005 08:35

DGL Member

Registriert: Mi Mai 12, 2004 08:40
Beiträge: 4

Thank !!

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