OUTPUT BUFFER:
# Lesson13.tcl # # NeHe's Bitmap Font Tutorial # # This Code Was Created By Jeff Molofee 2000 # Modified by Shawn T. to handle (%3.2f, num) parameters. # A HUGE Thanks To Fredric Echols For Cleaning Up # And Optimizing The Base Code, Making It More Flexible! # If You've Found This Code Useful, Please Let Me Know. # Visit My Site At nehe.gamedev.net # # Modified for Tcl3D by Paul Obermeier 2006/01/25 # See www.tcl3d.org for the Tcl3D extension. package require tcl3d 0.5.0 # Font to be used in the Tk listbox. set gDemo(listFont) {-family {Courier} -size 10} # Display mode. set gDemo(fullScreen) false # Window size. set gDemo(winWidth) 640 set gDemo(winHeight) 480 set gDemo(cnt1) 0.0 ; # 1st Counter Used To Move Text & For Coloring set gDemo(cnt2) 0.0 ; # 2nd Counter Used To Move Text & For Coloring # Show errors occuring in the Togl callbacks. proc bgerror { msg } { tk_messageBox -icon error -type ok -message "Error: $msg\n\n$::errorInfo" ExitProg } # Print info message into widget a the bottom of the window. proc PrintInfo { msg } { if { [winfo exists .fr.info] } { .fr.info configure -text $msg } } proc SetFullScreenMode { win } { set sh [winfo screenheight $win] set sw [winfo screenwidth $win] wm minsize $win $sw $sh wm maxsize $win $sw $sh set fmtStr [format "%dx%d+0+0" $sw $sh] wm geometry $win $fmtStr wm overrideredirect $win 1 focus -force $win } proc SetWindowMode { win w h } { set sh [winfo screenheight $win] set sw [winfo screenwidth $win] wm minsize $win 10 10 wm maxsize $win $sw $sh set fmtStr [format "%dx%d+0+25" $w $h] wm geometry $win $fmtStr wm overrideredirect $win 0 focus -force $win } # Toggle between windowing and fullscreen mode. proc ToggleWindowMode {} { if { $::gDemo(fullScreen) } { SetFullScreenMode . set ::gDemo(fullScreen) false } else { SetWindowMode . $::gDemo(winWidth) $::gDemo(winHeight) set ::gDemo(fullScreen) true } } # Custom GL "Print" Routine proc printString { str font } { glPushAttrib GL_LIST_BIT glListBase $font set len [string length $str] set sa [tcl3dVectorFromString GLubyte $str] glCallLists $len GL_UNSIGNED_BYTE $sa $sa delete glPopAttrib } # Resize And Initialize The GL Window proc ReshapeCallback { toglwin { w -1 } { h -1 } } { set w [$toglwin width] set h [$toglwin height] glViewport 0 0 $w $h ; # Reset The Current Viewport glMatrixMode GL_PROJECTION ; # Select The Projection Matrix glLoadIdentity ; # Reset The Projection Matrix # Calculate The Aspect Ratio Of The Window gluPerspective 45.0 [expr double($w)/double($h)] 0.1 100.0 glMatrixMode GL_MODELVIEW ; # Select The Modelview Matrix glLoadIdentity ; # Reset The Modelview Matrix set ::gDemo(winWidth) $w set ::gDemo(winHeight) $h } # All Setup For OpenGL Goes Here proc CreateCallback { toglwin } { glShadeModel GL_SMOOTH ; # Enable Smooth Shading glClearColor 0.0 0.0 0.0 0.5 ; # Black Background glClearDepth 1.0 ; # Depth Buffer Setup glEnable GL_DEPTH_TEST ; # Enables Depth Testing glDepthFunc GL_LEQUAL ; # The Type Of Depth Testing To Do glHint GL_PERSPECTIVE_CORRECTION_HINT GL_NICEST ; # Really Nice Perspective Calculations # Build The Font set fontName "-*-courier-bold-r-*-*-24-*-*-*-*-*-*-*" set ::fontBase [$toglwin loadbitmapfont $fontName] } proc Animate {} { .fr.toglwin postredisplay set ::animateId [tcl3dAfterIdle Animate] } proc StartAnimation {} { if { ! [info exists ::animateId] } { Animate } } proc StopAnimation {} { if { [info exists ::animateId] } { after cancel $::animateId unset ::animateId } } # Here's Where We Do All The Drawing proc DisplayCallback { toglwin } { # Clear Screen And Depth Buffer glClear [expr $::GL_COLOR_BUFFER_BIT | $::GL_DEPTH_BUFFER_BIT] # Viewport command is not really needed, but has been inserted for # Mac OSX. Presentation framework (Tk) does not send a reshape event, # when switching from one demo to another. glViewport 0 0 [$toglwin width] [$toglwin height] glLoadIdentity ; # Reset The Current Modelview Matrix glTranslatef 0.0 0.0 -1.0 ; # Move One Unit Into The Screen # Pulsing Colors Based On Text Position glColor3f [expr {double(cos($::gDemo(cnt1)))}] \ [expr {double(sin($::gDemo(cnt2)))}] \ [expr {1.0-0.5*double(cos($::gDemo(cnt1)+$::gDemo(cnt2)))}] # Position The Text On The Screen glRasterPos2f [expr {-0.45+0.05*double(cos($::gDemo(cnt1)))}] \ [expr {0.32*double(sin($::gDemo(cnt2)))}] # Print GL Text To The Screen printString [format "Active OpenGL Text With NeHe - %7.2f" $::gDemo(cnt1)] $::fontBase set ::gDemo(cnt1) [expr $::gDemo(cnt1) + 0.051] ; # Increase The First Counter set ::gDemo(cnt2) [expr $::gDemo(cnt2) + 0.005] ; # Increase The Second Counter $toglwin swapbuffers } # Put all exit related code here. proc ExitProg {} { exit } # Create the OpenGL window and some Tk helper widgets. proc CreateWindow {} { frame .fr pack .fr -expand 1 -fill both # Create Our OpenGL Window togl .fr.toglwin -width $::gDemo(winWidth) -height $::gDemo(winHeight) \ -swapinterval 1 \ -double true -depth true \ -createproc CreateCallback \ -reshapeproc ReshapeCallback \ -displayproc DisplayCallback listbox .fr.usage -font $::gDemo(listFont) -height 3 label .fr.info grid .fr.toglwin -row 0 -column 0 -sticky news grid .fr.usage -row 1 -column 0 -sticky news grid .fr.info -row 2 -column 0 -sticky news grid rowconfigure .fr 0 -weight 1 grid columnconfigure .fr 0 -weight 1 wm title . "Tcl3D demo: NeHe's Bitmap Font Tutorial (Lesson 13)" # Watch For ESC Key And Quit Messages wm protocol . WM_DELETE_WINDOW "ExitProg" bind .