nannified

1 files changed, 365 insertions, 365 deletions

diff --git a/Demo/sgi/gl/kunst.py b/Demo/sgi/gl/kunst.py
index 6d9e04d..f37f979 100755
--- a/Demo/sgi/gl/kunst.py
+++ b/Demo/sgi/gl/kunst.py
@@ -17,37 +17,37 @@ SPOTLIGHT = 104
 # Make a cylinder paralel with the Z axis with center (X,Y,0)
 # and radius 1
 def mkcyl(nslice, nparts, docircle):
-	cyl = []
-	step = 2.0 / float(nslice)
-	z = -1.0
-	for i in range(nslice):
-	    cyl.append(mkslice(z, z+step, nparts, docircle))
-	    z = z + step
-	return drawcylinder(cyl)
+        cyl = []
+        step = 2.0 / float(nslice)
+        z = -1.0
+        for i in range(nslice):
+            cyl.append(mkslice(z, z+step, nparts, docircle))
+            z = z + step
+        return drawcylinder(cyl)
 #
 # Make one part of a cylinder
 #
 def mkslice(z1, z2, nparts, docircle):
-	if docircle:
-	    w1 = z1
-	    w2 = z2
-	    w1 = sqrt(1.0-w1*w1)
-	    w2 = sqrt(1.0-w2*w2)
-	    normalz = 1.0
-	else:
-	    w1 = 1.0
-	    w2 = 1.0
-	    normalz = 0.0
-	slice = []
-	step = (2.0*pi)/float(nparts)
-	angle = 0.0
-	for i in range(nparts+1):
-	    vx = cos(angle)
-	    vy = sin(angle)
-	    slice.append( ((vx*w1,vy*w1,z1), (vx*w1, vy*w1, z1*normalz)) )
-	    slice.append( ((vx*w2,vy*w2,z2), (vx*w2, vy*w2, z2*normalz)) )
-	    angle = angle + step
-	return slice
+        if docircle:
+            w1 = z1
+            w2 = z2
+            w1 = sqrt(1.0-w1*w1)
+            w2 = sqrt(1.0-w2*w2)
+            normalz = 1.0
+        else:
+            w1 = 1.0
+            w2 = 1.0
+            normalz = 0.0
+        slice = []
+        step = (2.0*pi)/float(nparts)
+        angle = 0.0
+        for i in range(nparts+1):
+            vx = cos(angle)
+            vy = sin(angle)
+            slice.append( ((vx*w1,vy*w1,z1), (vx*w1, vy*w1, z1*normalz)) )
+            slice.append( ((vx*w2,vy*w2,z2), (vx*w2, vy*w2, z2*normalz)) )
+            angle = angle + step
+        return slice
 #
 # Drawcylinder : draw the cylinder
 #
@@ -55,370 +55,370 @@ class struct: pass
 curobj = struct()
 curobj.curobj = 1
 def drawcylinder(cyl):
-	obj = curobj.curobj
-	curobj.curobj = curobj.curobj+1
-	makeobj(obj)
-	for slice in cyl:
-	    bgntmesh()
-	    vnarray(slice)
-	    endtmesh()
-	closeobj()
-	return obj
+        obj = curobj.curobj
+        curobj.curobj = curobj.curobj+1
+        makeobj(obj)
+        for slice in cyl:
+            bgntmesh()
+            vnarray(slice)
+            endtmesh()
+        closeobj()
+        return obj
 #
 def drawnormals(cyl):
-	for slice in cyl:
-	    for triang in slice:
-		bgnline()
-		v3f(triang[0])
-		v3f(triang[0][0] + triang[1][0], triang[0][1] + triang[1][1], triang[0][2] + triang[1][2])
-		endline()
+        for slice in cyl:
+            for triang in slice:
+                bgnline()
+                v3f(triang[0])
+                v3f(triang[0][0] + triang[1][0], triang[0][1] + triang[1][1], triang[0][2] + triang[1][2])
+                endline()
 def drawfloors():
-	obj = curobj.curobj
-	curobj.curobj = curobj.curobj+1
-	makeobj(obj)
-	bgnpolygon()
-	v3i(4,6,-6)
-	v3i(-6,6,-6)
-	v3i(-6,-6,-6)
-	v3i(4,-6,-6)
-	endpolygon()
-	for floor in range(3):
-	    pos = -1 + 5*floor
-	    bgnpolygon()
-	    v3i(4,4,pos)
-	    v3i(-6,4,pos)
-	    v3i(-6,6,pos)
-	    v3i(4,6,pos)
-	    endpolygon()
-	    bgnpolygon()
-	    v3i(-4,4,pos)
-	    v3i(-4,-4,pos)
-	    v3i(-6,-4,pos)
-	    v3i(-6,4,pos)
-	    endpolygon()
-	    bgnpolygon()
-	    v3i(-6,-4,pos)
-	    v3i(-6,-6,pos)
-	    v3i(4,-6,pos)
-	    v3i(4,-4,pos)
-	    endpolygon()
-	closeobj()
-	return obj
+        obj = curobj.curobj
+        curobj.curobj = curobj.curobj+1
+        makeobj(obj)
+        bgnpolygon()
+        v3i(4,6,-6)
+        v3i(-6,6,-6)
+        v3i(-6,-6,-6)
+        v3i(4,-6,-6)
+        endpolygon()
+        for floor in range(3):
+            pos = -1 + 5*floor
+            bgnpolygon()
+            v3i(4,4,pos)
+            v3i(-6,4,pos)
+            v3i(-6,6,pos)
+            v3i(4,6,pos)
+            endpolygon()
+            bgnpolygon()
+            v3i(-4,4,pos)
+            v3i(-4,-4,pos)
+            v3i(-6,-4,pos)
+            v3i(-6,4,pos)
+            endpolygon()
+            bgnpolygon()
+            v3i(-6,-4,pos)
+            v3i(-6,-6,pos)
+            v3i(4,-6,pos)
+            v3i(4,-4,pos)
+            endpolygon()
+        closeobj()
+        return obj
 def drawdoors():
-	obj = curobj.curobj
-	curobj.curobj = curobj.curobj+1
-	makeobj(obj)
-	for floor in range(3):
-	    pos = -1+5*floor
-	    bgnpolygon()
-	    v3i(-2,6,pos)
-	    v3i(-2,6,pos+3)
-	    v3i(0,6,pos+3)
-	    v3i(0,6,pos)
-	    endpolygon()
-	closeobj()
-	return obj
+        obj = curobj.curobj
+        curobj.curobj = curobj.curobj+1
+        makeobj(obj)
+        for floor in range(3):
+            pos = -1+5*floor
+            bgnpolygon()
+            v3i(-2,6,pos)
+            v3i(-2,6,pos+3)
+            v3i(0,6,pos+3)
+            v3i(0,6,pos)
+            endpolygon()
+        closeobj()
+        return obj
 def drawrailing():
-	obj = curobj.curobj
-	curobj.curobj = curobj.curobj+1
-	makeobj(obj)
-	for floor in range(3):
-	    pos = -1 + 5*floor
-	    bgnpolygon()
-	    v3i(4,4,pos)
-	    v3i(4,4,pos-1)
-	    v3i(-4,4,pos-1)
-	    v3i(-4,4,pos)
-	    endpolygon()
-	    bgnpolygon()
-	    v3i(-4,4,pos)
-	    v3i(-4,4,pos-1)
-	    v3i(-4,-4,pos-1)
-	    v3i(-4,-4,pos)
-	    endpolygon()
-	    bgnpolygon()
-	    v3i(-4,-4,pos)
-	    v3i(-4,-4,pos-1)
-	    v3i(4,-4,pos-1)
-	    v3i(4,-4,pos)
-	    endpolygon()
-	closeobj()
-	return obj
+        obj = curobj.curobj
+        curobj.curobj = curobj.curobj+1
+        makeobj(obj)
+        for floor in range(3):
+            pos = -1 + 5*floor
+            bgnpolygon()
+            v3i(4,4,pos)
+            v3i(4,4,pos-1)
+            v3i(-4,4,pos-1)
+            v3i(-4,4,pos)
+            endpolygon()
+            bgnpolygon()
+            v3i(-4,4,pos)
+            v3i(-4,4,pos-1)
+            v3i(-4,-4,pos-1)
+            v3i(-4,-4,pos)
+            endpolygon()
+            bgnpolygon()
+            v3i(-4,-4,pos)
+            v3i(-4,-4,pos-1)
+            v3i(4,-4,pos-1)
+            v3i(4,-4,pos)
+            endpolygon()
+        closeobj()
+        return obj
 def drawwalls():
-	obj = curobj.curobj
-	curobj.curobj = curobj.curobj+1
-	makeobj(obj)
-	bgnpolygon()
-	v3i(4,6,-6)
-	v3i(4,6,18)
-	v3i(-6,6,18)
-	v3i(-6,6,-6)
-	endpolygon()
-	bgnpolygon()
-	v3i(-6,6,-6)
-	v3i(-6,6,18)
-	v3i(-6,-6,18)
-	v3i(-6,-6,-6)
-	endpolygon()
-	bgnpolygon()
-	v3i(-6,-6,-6)
-	v3i(-6,-6,18)
-	v3i(4,-6,18)
-	v3i(4,-6,-6)
-	endpolygon()
-	bgnpolygon()
-	v3i(4,-6,-6)
-	v3i(4,-6,18)
-	v3i(4,4,18)
-	v3i(4,4,-6)
-	endpolygon()
-	closeobj()
-	return obj
+        obj = curobj.curobj
+        curobj.curobj = curobj.curobj+1
+        makeobj(obj)
+        bgnpolygon()
+        v3i(4,6,-6)
+        v3i(4,6,18)
+        v3i(-6,6,18)
+        v3i(-6,6,-6)
+        endpolygon()
+        bgnpolygon()
+        v3i(-6,6,-6)
+        v3i(-6,6,18)
+        v3i(-6,-6,18)
+        v3i(-6,-6,-6)
+        endpolygon()
+        bgnpolygon()
+        v3i(-6,-6,-6)
+        v3i(-6,-6,18)
+        v3i(4,-6,18)
+        v3i(4,-6,-6)
+        endpolygon()
+        bgnpolygon()
+        v3i(4,-6,-6)
+        v3i(4,-6,18)
+        v3i(4,4,18)
+        v3i(4,4,-6)
+        endpolygon()
+        closeobj()
+        return obj
 def axis():
-	bgnline()
-	cpack(0xff0000)
-	v3i(-1,0,0)
-	v3i(1,0,0)
-	v3f(1.0, 0.1, 0.1)
-	endline()
-	bgnline()
-	cpack(0xff00)
-	v3i(0,-1,0)
-	v3i(0,1,0)
-	v3f(0.1, 1.0, 0.1)
-	endline()
-	bgnline()
-	cpack(0xff)
-	v3i(0,0,-1)
-	v3i(0,0,1)
-	v3f(0.1,0.1,1.0)
-	endline()
+        bgnline()
+        cpack(0xff0000)
+        v3i(-1,0,0)
+        v3i(1,0,0)
+        v3f(1.0, 0.1, 0.1)
+        endline()
+        bgnline()
+        cpack(0xff00)
+        v3i(0,-1,0)
+        v3i(0,1,0)
+        v3f(0.1, 1.0, 0.1)
+        endline()
+        bgnline()
+        cpack(0xff)
+        v3i(0,0,-1)
+        v3i(0,0,1)
+        v3f(0.1,0.1,1.0)
+        endline()
 #
 green_velvet = [ DIFFUSE, 0.05, 0.4, 0.05, LMNULL]
 silver = [ DIFFUSE, 0.3, 0.3, 0.3, SPECULAR, 0.9, 0.9, 0.95, \
-	SHININESS, 40.0, LMNULL]
+        SHININESS, 40.0, LMNULL]
 floormat = [ AMBIENT, 0.5, 0.25, 0.15, DIFFUSE, 0.5, 0.25, 0.15, SPECULAR, 0.6, 0.3, 0.2, SHININESS, 20.0, LMNULL]
 wallmat = [ DIFFUSE, 0.4, 0.2, 0.1, AMBIENT, 0.4, 0.20, 0.10, SPECULAR, 0.0, 0.0, 0.0, SHININESS, 20.0, LMNULL]
 offwhite = [ DIFFUSE, 0.8, 0.8, 0.6, AMBIENT, 0.8, 0.8, 0.6, SPECULAR, 0.9, 0.9, 0.9, SHININESS, 30.0, LMNULL]
 doormat = [ DIFFUSE, 0.1, 0.2, 0.5, AMBIENT, 0.2, 0.4, 1.0, SPECULAR, 0.2, 0.4, 1.0, SHININESS, 60.0, LMNULL]
 
 toplight = [ LCOLOR, 1.0, 1.0, 0.5, \
-	POSITION, 0.0, 0.0, 11.0, 1.0, LMNULL]
+        POSITION, 0.0, 0.0, 11.0, 1.0, LMNULL]
 floor1light = [ LCOLOR, 1.0, 1.0, 1.0, POSITION, 3.9, -3.9, 0.0, 1.0, \
-	SPOTDIRECTION, 1.0, 1.0, 0.0, SPOTLIGHT, 10.0, 90.0, LMNULL]
+        SPOTDIRECTION, 1.0, 1.0, 0.0, SPOTLIGHT, 10.0, 90.0, LMNULL]
 
 lmodel = [ AMBIENT, 0.92, 0.8, 0.5, LOCALVIEWER, 1.0, LMNULL]
 #
 def lighting():
-	lmdef(DEFMATERIAL, 1, green_velvet)
-	lmdef(DEFMATERIAL, 2, silver)
-	lmdef(DEFMATERIAL, 3, floormat)
-	lmdef(DEFMATERIAL, 4, wallmat)
-	lmdef(DEFMATERIAL, 5, offwhite)
-	lmdef(DEFMATERIAL, 6, doormat)
-	lmdef(DEFLIGHT, 1, toplight)
-	lmdef(DEFLIGHT, 2, floor1light)
-	lmdef(DEFLMODEL, 1, lmodel)
-	lmbind(MATERIAL, 1)
-	lmbind(LIGHT0, 1)
-	lmbind(LIGHT1, 2)
-	lmbind(LMODEL, 1)
+        lmdef(DEFMATERIAL, 1, green_velvet)
+        lmdef(DEFMATERIAL, 2, silver)
+        lmdef(DEFMATERIAL, 3, floormat)
+        lmdef(DEFMATERIAL, 4, wallmat)
+        lmdef(DEFMATERIAL, 5, offwhite)
+        lmdef(DEFMATERIAL, 6, doormat)
+        lmdef(DEFLIGHT, 1, toplight)
+        lmdef(DEFLIGHT, 2, floor1light)
+        lmdef(DEFLMODEL, 1, lmodel)
+        lmbind(MATERIAL, 1)
+        lmbind(LIGHT0, 1)
+        lmbind(LIGHT1, 2)
+        lmbind(LMODEL, 1)
 IdMat=[1.0,0.0,0.0,0.0, 0.0,1.0,0.0,0.0, 0.0,0.0,1.0,0.0, 0.0,0.0,0.0,1.0]
 #
 def defun(axis):
-	done = 0
-	while not done:
-	    print 'F'+axis+'(t) = ',
-	    s = sys.stdin.readline(100)
-	    print
-	    try:
-		s = 'def f'+axis+'(t): return '+s
-		exec(s, main_dict)
-		done = 1
-	    except RuntimeError:
-		print 'Sorry, there is a syntax error in your expression'
+        done = 0
+        while not done:
+            print 'F'+axis+'(t) = ',
+            s = sys.stdin.readline(100)
+            print
+            try:
+                s = 'def f'+axis+'(t): return '+s
+                exec(s, main_dict)
+                done = 1
+            except RuntimeError:
+                print 'Sorry, there is a syntax error in your expression'
 def getfunctions():
-	print 'Welcome to the CWI art simulator. You can now enter X, Y and Z'
-	print 'coordinates as a function of t.'
-	print 'Normal trig functions are available. Please use floating point'
-	print 'values only (so 0.0 for 0). Comments to jack@cwi.nl'
-	defun('x')
-	defun('y')
-	defun('z')
-	print 'Ok, here you go. Use mouse+right button to move up/down,'
-	print 'mouse+middle to speed up/slow down time. type ESC to quit simulation'
+        print 'Welcome to the CWI art simulator. You can now enter X, Y and Z'
+        print 'coordinates as a function of t.'
+        print 'Normal trig functions are available. Please use floating point'
+        print 'values only (so 0.0 for 0). Comments to jack@cwi.nl'
+        defun('x')
+        defun('y')
+        defun('z')
+        print 'Ok, here you go. Use mouse+right button to move up/down,'
+        print 'mouse+middle to speed up/slow down time. type ESC to quit simulation'
 def main():
-	getfunctions()
-	foreground()
-	prefposition(100,600,100,600)
-	void = winopen('cyl')
-	qdevice(ESCKEY)
-	qdevice(MOUSE1)
-	qdevice(MOUSE2)
-	qdevice(PKEY)
-	RGBmode()
-	doublebuffer()
-	gconfig()
-	zbuffer(1)
-	mmode(MVIEWING)
-	perspective(400, 1.0, 1.0, 20.0)
-	loadmatrix(IdMat)
-	vx = 0.0
-	vy = -6.0
-	vz = 0.0
-	lookat(0.0, -6.0, 0.0, 0.0, 0.0, 0.0, 0)
-	lighting()
-	t = -1.0
-	step = 1.0
-	bol = mkcyl(12,24, 1)
-	cable = mkcyl(1, 6, 0)
-	floors = drawfloors()
-	walls = drawwalls()
-	pillar = mkcyl(1,4,0)
-	railing = drawrailing()
-	doors = drawdoors()
-	shademodel(GOURAUD)
-	mousing = -1
-	pausing = 0
-	while 1:
-	    #
-	    # Check for some user input
-	    #
-	    if qtest():
-		dev, value = qread()
-		if dev == PKEY and value == 1:
-			pausing = 1
-		if dev == ESCKEY:
-		    break
-		elif (dev==MOUSE1 or dev==MOUSE2) and value == 1:
-		    if mousing > 0:
-			vx = 0.0
-			vy = -6.0
-			vz = 0.0
-		    mousing = dev
-		    oldx = getvaluator(MOUSEX)
-		    oldy = getvaluator(MOUSEY)
-		elif (dev==MOUSE1 or dev==MOUSE2):
-		    mousing = -1
-	    if mousing >= 0:
-		newx = getvaluator(MOUSEX)
-		newy = getvaluator(MOUSEY)
-		if newy <> oldy and mousing==MOUSE1:
-		    vz = vz + float(newy - oldy)/100.0
-		    dist = sqrt(vx*vx + vy*vy + vz*vz)
-		    perspective(400, 1.0, 1.0, dist+16.0)
-		    loadmatrix(IdMat)
-		    if vz < 0.0:
-			lookat(vx, vy, vz, 0.0, 0.0, 0.0, 1800)
-		    else:
-			lookat(vx, vy, vz, 0.0, 0.0, 0.0, 0)
-		if newy <> oldy and mousing==MOUSE2:
-		    step = step * exp(float(newy-oldy)/400.0)
-	    if getbutton(CTRLKEY) == 0:
-		t = t + step
-	    else:
-		t = t - step
-	    if getbutton(LEFTSHIFTKEY) == 0:
-		shademodel(GOURAUD)
-	    else:
-		shademodel(FLAT)
-	    #
-	    # Draw background and axis
-	    cpack(0x105090)
-	    clear()
-	    zclear()
-	    cpack(0x905010)
-	    axis()
-	    #
-	    # Draw object
-	    #
-	    bolx = fx(t)
-	    boly = fy(t)
-	    bolz = fz(t)
-	    err = ''
-	    if bolx < -4.0 or bolx > 4.0:
-		err = 'X('+`bolx`+') out of range [-4,4]'
-	    if boly < -4.0 or boly > 4.0:
-		err = 'Y('+`boly`+') out of range [-4,4]'
-	    if bolz < -4.0 or bolz > 8.0:
-		err = 'Z('+`bolz`+') out of range [-4,8]'
-	    if not err:
-		pushmatrix()
-		translate(bolx, boly, bolz)
-		scale(0.3, 0.3, 0.3)
-		lmbind(MATERIAL, 2)
-		callobj(bol)
-		popmatrix()
-		#
-		# Draw the cables
-		#
-		bolz = bolz + 0.3
-		pushmatrix()
-		linesmooth(SML_ON)
-		bgnline()
-		v3i(-4,-4,9)
-		v3f(bolx, boly, bolz)
-		endline()
-		bgnline()
-		v3i(-4,4,9)
-		v3f(bolx, boly, bolz)
-		endline()
-		bgnline()
-		v3i(4,-4,9)
-		v3f(bolx, boly, bolz)
-		endline()
-		bgnline()
-		v3i(4,4,9)
-		v3f(bolx, boly, bolz)
-		endline()
-		popmatrix()
-	    #
-	    # draw the floors
-	    #
-	    lmbind(MATERIAL, 3)
-	    callobj(floors)
-	    lmbind(MATERIAL, 4)
-	    callobj(walls)
-	    lmbind(MATERIAL, 5)
-	    pushmatrix()
-	    translate(-4.5,4.5,3.0)
-	    scale(0.2,0.2,9.0)
-	    rotate(450,'z')
-	    callobj(pillar)
-	    popmatrix()
-	    callobj(railing)
-	    lmbind(MATERIAL, 6)
-	    pushmatrix()
-	    translate(0.0, -0.01, 0.0)
-	    callobj(doors)
-	    popmatrix()
-	    if mousing == MOUSE2 or err:
-		cpack(0xff0000)
-		cmov(0.0, 0.0, 0.4)
-		charstr('t='+`t`)
-	    if mousing == MOUSE2:
-		cpack(0xff0000)
-		cmov(0.0, 0.0, 0.2)
-		charstr('delta-t='+`step`)
-	    if err:
-		cpack(0xff00)
-		cmov(0.0, 0.0, 0.2)
-		print err
-		charstr(err)
-		pausing = 1
-	    if pausing:
-		cpack(0xff00)
-		cmov(0.0, 0.0, 0.0)
-		charstr('Pausing, type P to continue')
-	    swapbuffers()
-	    if pausing:
-		while 1:
-		    dv=qread()
-		    if dv==(PKEY,1):
-			break
-		    if dv==(ESCKEY,1):
-			sys.exit(0)
-		pausing = 0
+        getfunctions()
+        foreground()
+        prefposition(100,600,100,600)
+        void = winopen('cyl')
+        qdevice(ESCKEY)
+        qdevice(MOUSE1)
+        qdevice(MOUSE2)
+        qdevice(PKEY)
+        RGBmode()
+        doublebuffer()
+        gconfig()
+        zbuffer(1)
+        mmode(MVIEWING)
+        perspective(400, 1.0, 1.0, 20.0)
+        loadmatrix(IdMat)
+        vx = 0.0
+        vy = -6.0
+        vz = 0.0
+        lookat(0.0, -6.0, 0.0, 0.0, 0.0, 0.0, 0)
+        lighting()
+        t = -1.0
+        step = 1.0
+        bol = mkcyl(12,24, 1)
+        cable = mkcyl(1, 6, 0)
+        floors = drawfloors()
+        walls = drawwalls()
+        pillar = mkcyl(1,4,0)
+        railing = drawrailing()
+        doors = drawdoors()
+        shademodel(GOURAUD)
+        mousing = -1
+        pausing = 0
+        while 1:
+            #
+            # Check for some user input
+            #
+            if qtest():
+                dev, value = qread()
+                if dev == PKEY and value == 1:
+                        pausing = 1
+                if dev == ESCKEY:
+                    break
+                elif (dev==MOUSE1 or dev==MOUSE2) and value == 1:
+                    if mousing > 0:
+                        vx = 0.0
+                        vy = -6.0
+                        vz = 0.0
+                    mousing = dev
+                    oldx = getvaluator(MOUSEX)
+                    oldy = getvaluator(MOUSEY)
+                elif (dev==MOUSE1 or dev==MOUSE2):
+                    mousing = -1
+            if mousing >= 0:
+                newx = getvaluator(MOUSEX)
+                newy = getvaluator(MOUSEY)
+                if newy <> oldy and mousing==MOUSE1:
+                    vz = vz + float(newy - oldy)/100.0
+                    dist = sqrt(vx*vx + vy*vy + vz*vz)
+                    perspective(400, 1.0, 1.0, dist+16.0)
+                    loadmatrix(IdMat)
+                    if vz < 0.0:
+                        lookat(vx, vy, vz, 0.0, 0.0, 0.0, 1800)
+                    else:
+                        lookat(vx, vy, vz, 0.0, 0.0, 0.0, 0)
+                if newy <> oldy and mousing==MOUSE2:
+                    step = step * exp(float(newy-oldy)/400.0)
+            if getbutton(CTRLKEY) == 0:
+                t = t + step
+            else:
+                t = t - step
+            if getbutton(LEFTSHIFTKEY) == 0:
+                shademodel(GOURAUD)
+            else:
+                shademodel(FLAT)
+            #
+            # Draw background and axis
+            cpack(0x105090)
+            clear()
+            zclear()
+            cpack(0x905010)
+            axis()
+            #
+            # Draw object
+            #
+            bolx = fx(t)
+            boly = fy(t)
+            bolz = fz(t)
+            err = ''
+            if bolx < -4.0 or bolx > 4.0:
+                err = 'X('+`bolx`+') out of range [-4,4]'
+            if boly < -4.0 or boly > 4.0:
+                err = 'Y('+`boly`+') out of range [-4,4]'
+            if bolz < -4.0 or bolz > 8.0:
+                err = 'Z('+`bolz`+') out of range [-4,8]'
+            if not err:
+                pushmatrix()
+                translate(bolx, boly, bolz)
+                scale(0.3, 0.3, 0.3)
+                lmbind(MATERIAL, 2)
+                callobj(bol)
+                popmatrix()
+                #
+                # Draw the cables
+                #
+                bolz = bolz + 0.3
+                pushmatrix()
+                linesmooth(SML_ON)
+                bgnline()
+                v3i(-4,-4,9)
+                v3f(bolx, boly, bolz)
+                endline()
+                bgnline()
+                v3i(-4,4,9)
+                v3f(bolx, boly, bolz)
+                endline()
+                bgnline()
+                v3i(4,-4,9)
+                v3f(bolx, boly, bolz)
+                endline()
+                bgnline()
+                v3i(4,4,9)
+                v3f(bolx, boly, bolz)
+                endline()
+                popmatrix()
+            #
+            # draw the floors
+            #
+            lmbind(MATERIAL, 3)
+            callobj(floors)
+            lmbind(MATERIAL, 4)
+            callobj(walls)
+            lmbind(MATERIAL, 5)
+            pushmatrix()
+            translate(-4.5,4.5,3.0)
+            scale(0.2,0.2,9.0)
+            rotate(450,'z')
+            callobj(pillar)
+            popmatrix()
+            callobj(railing)
+            lmbind(MATERIAL, 6)
+            pushmatrix()
+            translate(0.0, -0.01, 0.0)
+            callobj(doors)
+            popmatrix()
+            if mousing == MOUSE2 or err:
+                cpack(0xff0000)
+                cmov(0.0, 0.0, 0.4)
+                charstr('t='+`t`)
+            if mousing == MOUSE2:
+                cpack(0xff0000)
+                cmov(0.0, 0.0, 0.2)
+                charstr('delta-t='+`step`)
+            if err:
+                cpack(0xff00)
+                cmov(0.0, 0.0, 0.2)
+                print err
+                charstr(err)
+                pausing = 1
+            if pausing:
+                cpack(0xff00)
+                cmov(0.0, 0.0, 0.0)
+                charstr('Pausing, type P to continue')
+            swapbuffers()
+            if pausing:
+                while 1:
+                    dv=qread()
+                    if dv==(PKEY,1):
+                        break
+                    if dv==(ESCKEY,1):
+                        sys.exit(0)
+                pausing = 0
 #
 try:
     main()