def setCamera(self,bbox=None,angles=None):
"""Sets the camera looking under angles at bbox.
This function sets the camera angles and adjusts the zooming.
The camera distance remains unchanged.
If a bbox is specified, the camera will be zoomed to make the whole
bbox visible.
If no bbox is specified, the current scene bbox will be used.
If no current bbox has been set, it will be calculated as the
bbox of the whole scene.
"""
self.makeCurrent()
# go to a distance to have a good view with a 45 degree angle lens
if bbox is None:
bbox = self.bbox
else:
self.bbox = bbox
center,size = vector.centerDiff(bbox[0],bbox[1])
# calculating the bounding circle: this is rather conservative
dist = vector.length(size)
if dist <= 0.0:
dist = 1.0
self.camera.setCenter(*center)
if angles:
self.camera.setRotation(*angles)
self.camera.setDist(dist)
self.camera.setLens(45.,self.aspect)
self.camera.setClip(0.01*dist,100.*dist)
def setView(self,bbox=None,side='front'):
"""Sets the camera looking from one of the named views.
On startup, the predefined views are 'front', 'back', 'left',
'right', 'top', 'bottom' and 'iso'.
This function does not only set the camera angles, but also
adjust the zooming.
If a bbox is specified, the camera will be zoomed to view the
whole bbox.
If no bbox is specified, the current scene bbox will be used.
If no current bbox has been set, it will be calculated as the
bbox of the whole scene.
"""
self.makeCurrent()
# select view angles: if undefined use (0,0,0)
angles = self.views.get(side,(0,0,0))
# go to a distance to have a good view with a 45 degree angle lens
if type(bbox) == type(None):
bbox = self.bbox
else:
self.bbox = bbox
center,size = vector.centerDiff(bbox[0],bbox[1])
#print "Setting view for bbox",bbox
#print "center=",center
#print "size=",size
# calculating the bounding circle: this is rather conservative
dist = vector.length(size)
#print "dist = ",dist
self.camera.setCenter(*center)
self.camera.setRotation(*angles)
self.camera.setDist(dist)
self.camera.setLens(45.,self.aspect)
if dist > 0.0:
self.camera.setClip(0.01*dist,100*dist)
else:
self.camera.setClip(0.0,1.0)
