I extended the Fl_Gl_Window to allow me to customize the draw and handle
functions and render using some classes I had already created.
I followed the instructions found on this site and got it working for the most
part. It renders almost exactly like my win32 + OpenGL app except the viewport
appears to be wrong. Instead of drawing to the entire window, there is always
white space on the right on the screen. I noticed (by drawing a grid) that it
seems to be set to an exact square instead of the size I gave to both the
constructor of the Fl_Gl_Window child class and the glOrtho/gluOrtho2D function.
Is there something wrong with how I setup the Fl_Gl_Window or the ortho
projection?
Here are some relevant code snippets:
class OGL_Window : public Fl_Gl_Window
{
void draw();
int handle(int);
public:
OGL_Window(int X, int Y, int W, int H, const char *L)
: Fl_Gl_Window(X, Y, W, H, L) {}
};
void OGL_Window::draw()
{
// ... draw stuff here ...
glClear( GL_COLOR_BUFFER_BIT );
// INSERT Draw code here
// Render the grid
}
int main(int argc, char **argv)
{
int nWWidth = 1024;
int nWHeight = 600;
OGL_Window *window = new OGL_Window( 0, 0, nWWidth, nWHeight, NULL );
window->end();
window->show( argc, argv );
window->make_current();
glEnable(GL_CULL_FACE);
glClearColor( 1.0, 1.0, 1.0, 1.0 );
glViewport(0, 0, nWidth, nHeight);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho( 0.0, nWidth, 0.0, nHeight, 0.0, 1000 );
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
return Fl::run();
}
_______________________________________________
fltk-opengl mailing list
[email protected]
http://lists.easysw.com/mailman/listinfo/fltk-opengl
