Mouse zoom

[Renato Lima]

I am using camera = vizcam.PivotNavigate(center=[0, 2, 2], distance=2.5)

The mouse wheel reduces the zoom factor exponentially as I zoom into some object. How do I make it stop or change this behavior?

[farshizzo]

Create your own class that inherits from PivotNavigate and override the mouse wheel behavior:class MyPivotNavigate(vizcam.PivotNavigate):

def _camMouseWheel(self,e):

# Compute new distance base on mouse wheel
dist = self.getDistance() - e.dir

# Make sure distance does not drop below zero
dist = max(dist,0.01)

# Apply new distance
self.setDistance(dist)

cam = MyPivotNavigate()

[kovitch]

Hi,

Is there a way to override mouse wheel in the Panorama Camera class?

All I want is a Panorama Camera with the zoom in and zoom out capabilities.

Best regards,

Alex.

[kovitch]

Solved. Changing the Field of View is enough for my purposes.

For those who care:


def onMouseWheel(dir):
if dir == 1:
viz.fov(40,1.3333)
else:
viz.fov(70,1.3333)
viz.callback(viz.MOUSEWHEEL_EVENT,onMouseWheel)