Viewpoint control
 

Hi,

I am working using the viewpoint control tutorial and when I am trying to make the car I modeled in 3d Max I am running into coordinate problems. It seems to work when I have the object positioned at 0,0,0 but when I move it somewhere else, the viewpoint is no longer inside the car. Here is my script:

import viz
viz.go()

#Changing the background color to SKYBLUE
viz.clearcolor(0.5,0.5,1)

#Defining the move and the turn speeds
MOVE_SPEED = 5
TURN_SPEED = 60

#Adding the objects to the world
ground = viz.add('ground.osg')
car = viz.add('car.osg')

#Getting main viewpoint object
view = viz.get(viz.MAIN_VIEWPOINT)

def mytimer(num):

if viz.iskeydown(viz.KEY_UP):
view.move(0,0,MOVE_SPEED*viz.elapsed(),viz.BODY_OR I)
elif viz.iskeydown(viz.KEY_DOWN):
view.move(0,0,-MOVE_SPEED*viz.elapsed(),viz.BODY_ORI)

if viz.iskeydown(viz.KEY_RIGHT):
view.rotate(0,1,0,TURN_SPEED*viz.elapsed(),viz.BOD Y_ORI,viz.RELATIVE_WORLD)
elif viz.iskeydown(viz.KEY_LEFT):
view.rotate(0,1,0,-TURN_SPEED*viz.elapsed(),viz.BODY_ORI,viz.RELATIVE _WORLD)

updatecar()

def updatecar():
car.translate(view.get(viz.HEAD_POS))
car.rotate(view.get(viz.BODY_AXISANGLE))
car.translate(0.35,-1.2,0.2,viz.RELATIVE_LOCAL)
#def updatecar():
# car.translate(view.get())
# car.rotate(view.getAxisAngle(viz.BODY_ORI))
# car.translate(0.35,-1.2,0.2,viz.RELATIVE_LOCAL)

def mousemove(e):
euler = view.getEuler(viz.HEAD_ORI)
euler[0] += e.dx*0.1
euler[1] += -e.dy*0.1
euler[1] = viz.clamp(euler[1],-85.0,85.0)
view.rotate(euler,viz.HEAD_ORI)

def mousedown(button):
if button == viz.MOUSEBUTTON_LEFT:
view.reset(viz.HEAD_ORI)
elif button == viz.MOUSEBUTTON_RIGHT:
view.reset(viz.BODY_ORI|viz.HEAD_POS)
updatecar()

viz.callback(viz.TIMER_EVENT,mytimer)
viz.starttimer(0,0.01,viz.FOREVER)

viz.callback(viz.MOUSE_MOVE_EVENT,mousemove)
viz.callback(viz.MOUSEBUTTON_EVENT,mousedown)

viz.mouse(viz.OFF)
viz.cursor(viz.OFF)
viz.restrictmouse(viz.ON)

Thanks,

Vinicius

Can you please repost the code using the [code][/code] tags. It will preserve the formatting and make it easier for me to test your script. Thanks.

I tried your script but there were some errors with it. I fixed the errors and it works for me now. Can you try the following code:

HI farshizzo,

Thanks for your help. I tried your script using the files I modeled in 3ds Max instead of the ones with the tutorials and the problem remained. I'll double check my models and I'll let you know.

Thanks

Vinicius

Hello,

Even after double checking the files and the script it is not working. So, I was wondering if when I am exporting as .osg files I am not clicking one of the options or I am not doing it right. This has happened a couple of times already and I tried everything thinking the problem was in the script but my script is exactly like the one I got from you. So, I am guessing the problem is in the modeling. Could you help me?

Thanks,

Vinicius

I don't really understand what the problem is. You will need to post your model so I can test it out myself. If you prefer, you can email the model to lashkari@worldviz.com