[Freeglut-developer] StrokeChar doesn't draw

[Florian M. <flo...@ho...>]

Thank you!
But with my code nothing is drawn....

    glPushMatrix();

    const char* ch = sCaption.c_str();
    glColor3d(1.0, 1.0, 1.0);
    glLineWidth(5.0f);
    glScaled(GLUT_FONT_WIDTH, GLUT_FONT_HEIGHT, GLUT_FONT_DESCENT);
    while (*ch) glutStrokeCharacter(GLUT_STROKE_MONO_ROMAN,*(ch++));

    glPopMatrix();

sCaption is std::string

In my displayFunc I do:
void MainDisplayF()
{
glClearColor(0.0f,0.0f,0.0f,0.0f);

glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //löscht den
farbspeicher
glEnable(GL_DEPTH_TEST);
...

}

my reshapeFunc:
void MainReshapeF(int width, int height)
{
    glViewport(0, 0, width, height);

    iMainWidth = width;
    iMainHeight = height;

    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    glOrtho(-1.0,2.2,-1.4,1.0,-1.0,1.0); // These numbers have reasons ;)
    glMatrixMode(GL_MODELVIEW);
}


Thank you for your efforts!
--------------------------------------------------
From: "Florian Echtler" <fl...@bu...>
Sent: Friday, July 02, 2010 5:12 PM
To: "FreeGLUT developers list" <fre...@li...>
Cc: "FlorianMeßner" <flo...@ho...>
Subject: Re: [Freeglut-developer] Freeglut - StrokeStrings

> Hello everyone,
>
>> It sounds like you are using C++ variable types.  The "freeglut"
>>  libraries are C libraries; the string will be a simple "char *"
>>  variable.  There may be some trouble with the "const" that the "c_str"
>>  function returns.
> The quick-and-dirty solution to this looks somewhat along the lines of:
>
> const char* chr = text.c_str();
> while (*chr) glutStrokeCharacter(GLUT_STROKE_MONO_ROMAN,*(chr++));
>
>> I'm not particularly conversant on the stroke fonts.  I think they
>>  generate regular OpenGL objects and can be moved and scaled by
>>  adjusting the transformation matrices.
> That's correct. They are also influenced, e.g., by a previous
> glLineWidth(...). I'm using the following defines:
>
> #define GLUT_FONT_HEIGHT  152.381
> #define GLUT_FONT_DESCENT  33.333
> #define GLUT_FONT_WIDTH   104.762
>
> I've cc'ed the developers' list on this reply as somebody there may
>>  have greater wisdom than I do.  Also, just in case you hadn't seen
>>  them on the "freeglut" page I would like to introduce you to them.
>
> Welcome :-)
>
> HTH,
> Florian
>
>> -----Original Message-----
>> From: Florian Meßner [mailto:flo...@ho...]
>> Sent: Friday, July 02, 2010 9:18 AM
>> To: Fay, John F Dr CTR USAF AFMC AAC/XRS
>> Subject: Freeglut - StrokeStrings
>>
>> Hi John,
>> I've got a question - again.
>>
>> Well, I wanted to use  glutStrokeString, but I don't know what to use as 
>> the second parameter:
>>
>> std::string s;
>> ...
>> glutStrokeString(GLUT_STROKE_MONO_ROMAN, s);
>> glutStrokeString(GLUT_STROKE_MONO_ROMAN, s.c_str());
>>
>> both tries didn't work...
>>
>> And I wanted to know, how to change the size of such strokestrings.
>>
>> Thanks again :-)
>>
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>
> -- 
> 0666 - Filemode of the Beast
>
>