VizTouch Help!

[Majestic12]

Hello!

First of all I would like to say thank you for a wonderful software. I have had hours of fun creating various virtual environments. :)

I have just recently purchased a touch-screen and started exploring the VizTouch module and I have a little issue, maybe you can help!

I have a cube that I want to look around using setEuler. I disabled the regular mouse navigation but I can't seem to figure out how to determine which way I want to rotate. In terms of touch I want this:


def begin(e):
#Begin touch

def move(e):
#On move, determine which direction it is moving and rotate the around the
cube appropriately. As long as the touch persists, keep rotating slowly.

def end(e):
#End touch

viztouch.onTouchDown(begin)

viztouch.onTouchMove(move)

viztouch.onTouchUp(end)



I tried to do a similar thing with the gestures, but it turned out fairly clunky. I had to do flicks repeatedly and each time would move the view a fixed distance:


def gesturemethod(typen):

if (typen == 'left'):
#cube.setEuler...
elif (typen == 'right'):
#cube.setEuler...
elif (typen == 'up'):
#cube.serEuler...
elif (typen == 'down'):
#cube.setEuler...

viztouch.onGestureFlick(viztouch.FLICK_UP,gesturem ethod, 'up')

viztouch.onGestureFlick(viztouch.FLICK_DOWN,gestur emethod, 'down')

viztouch.onGestureFlick(viztouch.FLICK_RIGHT,gestu remethod, 'right')

viztouch.onGestureFlick(viztouch.FLICK_LEFT,gestur emethod, 'left')


I would like to do a smooth solution with the touch one but I can't seem to figure out how to do it smoothly. I would be appreciative of any help I can get in this! How do I determine which way a touch is moving and then set the euler accordingly?

Thanks!!
M12

[Majestic12]

Oh, and to add, Flicks Up or Down don't seem to trigger for me. I only got them to trigger twice (I used prints to test this). Left and Right work just fine.

[Jeff]

The following example rotates different cubes using viztouch move events. In order to activate move on a cube the first touch event must intersect with it's geometry:

import viz
import vizshape
import viztouch

viz.go()

dojo = viz.addChild('dojo.osgb')
redCube = vizshape.addCube(pos=[-1,1.8,6],color=viz.RED)
blueCube = vizshape.addCube(pos=[1,1.8,6],color=viz.BLUE)

viztouch.setMode(viztouch.MODE_TOUCH)

class ShapeSpinner(object):

def __init__(self, model):

self.model = model
self.last_pos = []

self.touchDown_event = viztouch.onTouchDown(self.beginTouch)
self.touchMove_event = viztouch.onTouchMove(self.moveTouch)
self.touchUp_event = viztouch.onTouchUp(self.endTouch)
self.touchMove_event.setEnabled(viz.OFF)

def beginTouch(self, e):

pos = e.pos.normalized

#If begin touch intersects model enable movement
if viz.pick(pos=pos) == self.model:
self.touchMove_event.setEnabled(viz.ON)
self.last_pos = pos

def moveTouch(self,e):

pos = e.pos.normalized

if pos[0] > self.last_pos[0]:
self.model.setEuler([-0.4,0.0,0],viz.REL_LOCAL)
elif pos[0] < self.last_pos[0]:
self.model.setEuler([0.4,0.0,0],viz.REL_LOCAL)

self.last_pos = pos

def endTouch(self,e):

self.touchMove_event.setEnabled(viz.OFF)


ShapeSpinner(redCube)
ShapeSpinner(blueCube)

viz.mouse(viz.OFF)