node3d.visible(viz.OFF) Problem

[Sandro Holzer]

Hi

Sorry, I am not able to work it ou by myself.
I added a small sample, and it should work like this:
there are 3 bars in a chain. The bar-body is attached
bar1 should rotate araund the vertikal axis (keys "t" and "b")
on the end of bar1, bar2 is connected and should rotate like a arm.
and on the end of bar2, bar3 is connected and should also rotate like a arm.

and then I want to switch the visibility of bar2

The first code is like I want it:

import viz
viz.go()
 
viz.clearcolor(0.1,0.1,1)
#ground = viz.add('tut_ground.wrl')
ANCHOR_POS= (0.6,1.8005,6)
bar1 = viz.add('bar2.obj',pos=ANCHOR_POS)
bar2 = bar1.add('bar2.obj')
bar2.translate([0.0,0.0,-1])


bar3 = bar2.add('bar2.obj')
bar3.translate([0.0,0.0,-1])

a = 0
b = 0
c = 0

def mytimer(num):
	global a,b,c
	if viz.iskeydown('t'):
		a = a + 1
		if a > 89:
			a = 89
		
		move()
	if viz.iskeydown('b'):
		a = a - 1
		if a < -89:
			a = -89
		move()
		
	if viz.iskeydown('f'):
		b = b + 1
		if b > 89:
			b = 89
		move()
	if viz.iskeydown('h'):
		b = b - 1
		if b < -89:
			b = -89
		move()
		
	if viz.iskeydown('z'):
		c = c + 1
		if c > 89:
			c = 89
		move()
	if viz.iskeydown('n'):
		c = c - 1
		if c < -89:
			c = -89
		move()

def move():
	
	euler = bar1.getEuler(viz.ABS_GLOBAL)
	euler[0] = a
	bar1.setEuler(euler,viz.ABS_GLOBAL)
	
	euler = bar2.getEuler(viz.ABS_GLOBAL)
	euler[1] = b
	bar2.setEuler(euler,viz.ABS_GLOBAL)
	
	euler = bar3.getEuler(viz.ABS_GLOBAL)
	euler[1] = c
	bar3.setEuler(euler,viz.ABS_GLOBAL)


	
	
vizact.onkeydown(' ',bar2.visible,viz.TOGGLE)

viz.callback(viz.TIMER_EVENT,mytimer)
viz.starttimer(0,0.02,viz.FOREVER)

The following code is with the linked group:

First problem, the bar3 is not at the end of bar2 (you have to navigate back to look for it) this has something to do with the ANCHOR_POS of the first bar.
Second problem, bar3 follows bar2, but not the bar1.

import viz
viz.go()
 
viz.clearcolor(0.1,0.1,1)
#ground = viz.add('tut_ground.wrl')
ANCHOR_POS= (0.6,1.8005,6)
bar1 = viz.add('bar2.obj',pos=ANCHOR_POS)
bar2 = bar1.add('bar2.obj')
bar2.translate([0.0,0.0,-1])
group = viz.addGroup()
link = viz.link(bar2,group)


bar3 = viz.add('bar2.obj',parent=group,pos=[0.0,0.0,-1.0])



a = 0
b = 0
c = 0

def mytimer(num):
	global a,b,c
	if viz.iskeydown('t'):
		a = a + 1
		if a > 89:
			a = 89
		
		move()
	if viz.iskeydown('b'):
		a = a - 1
		if a < -89:
			a = -89
		move()
		
	if viz.iskeydown('f'):
		b = b + 1
		if b > 89:
			b = 89
		move()
	if viz.iskeydown('h'):
		b = b - 1
		if b < -89:
			b = -89
		move()
		
	if viz.iskeydown('z'):
		c = c + 1
		if c > 89:
			c = 89
		move()
	if viz.iskeydown('n'):
		c = c - 1
		if c < -89:
			c = -89
		move()

def move():
	
	euler = bar1.getEuler(viz.ABS_GLOBAL)
	euler[0] = a
	bar1.setEuler(euler,viz.ABS_GLOBAL)
	
	euler = bar2.getEuler(viz.ABS_GLOBAL)
	euler[1] = b
	bar2.setEuler(euler,viz.ABS_GLOBAL)
	
	euler = bar3.getEuler(viz.ABS_GLOBAL)
	euler[1] = c
	bar3.setEuler(euler,viz.ABS_GLOBAL)


	
	
vizact.onkeydown(' ',bar2.visible,viz.TOGGLE)

viz.callback(viz.TIMER_EVENT,mytimer)
viz.starttimer(0,0.02,viz.FOREVER)