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require "opengl"
require "glut"
display = Proc.new {
GL::Clear(GL::COLOR_BUFFER_BIT);
GL.LoadIdentity
GL::RasterPos2d(20,20)
"Hello Bitmap".each_byte { |x| GLUT.BitmapCharacter(GLUT::BITMAP_9_BY_15, x) }
GL.Translate(0, 50, 0)
GL.Scale(0.25, 0.25, 1)
"Hello Stroke".each_byte { |x| GLUT.StrokeCharacter(GLUT::STROKE_ROMAN, x) }
GL.Flush();
}
reshape = Proc.new {|w, h|
GL::Viewport(0, 0, w, h);
GL::MatrixMode(GL::PROJECTION);
GL::LoadIdentity();
GL::Ortho(0.0, w, 0.0, h, -1.0, 1.0);
GL::MatrixMode(GL::MODELVIEW);
}
# Main Loop
# Open window with initial window size, title bar,
# color index display mode, and handle input events.
#
GLUT.Init
GLUT.InitDisplayMode(GLUT::SINGLE | GLUT::RGB);
GLUT.InitWindowSize(200, 200);
GLUT.CreateWindow($0);
GLUT.ReshapeFunc(reshape);
GLUT.DisplayFunc(display);
GLUT.MainLoop
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