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#!/bin/sh
# the next line restarts using tclsh \
exec tclsh "$0" "$@"
# $Id: double.tcl,v 1.2 2009/05/14 20:43:34 vareille Exp $
# Togl - a Tk OpenGL widget
# Copyright (C) 1996 Brian Paul and Ben Bederson
# Copyright (C) 2006-2007 Greg Couch
# See the LICENSE file for copyright details.
# An Tk/OpenGL widget demo with two windows, one single buffered and the
# other double buffered.
package provide double 1.0
# add parent directory to path to find Togl's pkgIndex in current directory
if { [file exists pkgIndex.tcl] } {
set auto_path [linsert $auto_path 0 ..]
}
# following load also loads Tk and Togl packages
load [file dirname [info script]]/double[info sharedlibextension]
# create ::double namespace
namespace eval ::double {
}
proc double::setup {} {
wm title . "Single vs Double Buffering"
frame .f1
# create first Togl widget
togl .f1.o1 -width 200 -height 200 -rgba true -double false -depth true -ident Single -create create_cb -display display_cb -reshape reshape_cb
# create second Togl widget, share display lists with first widget
togl .f1.o2 -width 200 -height 200 -rgba true -double true -depth true -ident Double -sharelist Single -create create_cb -display display_cb -reshape reshape_cb
scale .sx -label {X Axis} -from 0 -to 360 -command {::double::setAngle x} -orient horizontal
scale .sy -label {Y Axis} -from 0 -to 360 -command {::double::setAngle y} -orient horizontal
button .btn -text Quit -command exit
bind .f1.o1 <B1-Motion> {
::double::motion_event [lindex [%W config -width] 4] \
[lindex [%W config -height] 4] \
%x %y
}
bind .f1.o2 <B1-Motion> {
::double::motion_event [lindex [%W config -width] 4] \
[lindex [%W config -height] 4] \
%x %y
}
pack .f1.o1 .f1.o2 -side left -padx 3 -pady 3 -fill both -expand t
pack .f1 -fill both -expand t
pack .sx -fill x
pack .sy -fill x
pack .btn -fill x
}
# This is called when mouse button 1 is pressed and moved in either of
# the OpenGL windows.
proc double::motion_event { width height x y } {
setXrot .f1.o1 [expr 360.0 * $y / $height]
setXrot .f1.o2 [expr 360.0 * $y / $height]
setYrot .f1.o1 [expr 360.0 * ($width - $x) / $width]
setYrot .f1.o2 [expr 360.0 * ($width - $x) / $width]
# .sx set [expr 360.0 * $y / $height]
# .sy set [expr 360.0 * ($width - $x) / $width]
.sx set [getXrot]
.sy set [getYrot]
}
# This is called when a slider is changed.
proc double::setAngle {axis value} {
global xAngle yAngle zAngle
switch -exact $axis {
x {setXrot .f1.o1 $value
setXrot .f1.o2 $value}
y {setYrot .f1.o1 $value
setYrot .f1.o2 $value}
}
}
# Execution starts here!
if { [info script] == $argv0 } {
::double::setup
}
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