def scale2(self,val):
"""Scale a value to the range -1...1.
This scales indepently in one of the intervals
xmin..x0 or x0..xmax.
"""
if val < self.x0:
return stuur(val,[self.xmin,(self.x0+self.xmin)/2,self.x0],[-1.,-0.5,0.],self.exp)
else:
return stuur(val,[self.x0,(self.x0+self.xmax)/2,self.xmax],[0.,0.5,1.0],1./self.exp2)
def dynazoom(self,x,y,action):
"""Perform dynamic zoom operation.
This function processes mouse button events controlling a dynamic
zoom operation. The action is one of PRESS, MOVE or RELEASE.
"""
if action == PRESS:
self.state = [self.camera.getDist(),self.camera.area.tolist(),pf.cfg['gui/dynazoom']]
elif action == MOVE:
w,h = self.getSize()
dx,dy = float(self.statex-x)/w, float(self.statey-y)/h
for method,state,value,size in zip(self.state[2],[self.statex,self.statey],[x,y],[w,h]):
#pf.debug("%s %s %s %s" % (method,state,value,size))
if method == 'area':
d = float(state-value)/size
f = exp(4*d)
self.camera.zoomArea(f,area=asarray(self.state[1]).reshape(2,2))
elif method == 'dolly':
d = utils.stuur(value,[0,state,size],[5,1,0.2],1.2)
#pf.debug(d)
self.camera.setDist(d*self.state[0])
self.update()
elif action == RELEASE:
self.update()
self.camera.saveModelView()
def setFar(fld):
val = fld.value()/100.
cam = pf.canvas.camera
res = stuur(val,[0.,0.5,1.0],[0.01*cam.dist,cam.dist,100.*cam.dist])
#print "%s = %s" % (val,res)
cam.setClip(cam.near,res)
pf.canvas.update()
def scale(self,val):
"""Scale a value to the range -1...1.
If the ColorScale has only one exponent, values in the range
mival..maxval are scaled to the range -1..+1.
If two exponents were specified, scaling is done independently in
one of the intervals minval..midval or midval..maxval resulting into
resp. the interval -1..0 or 0..1.
"""
if self.exp2 == None:
return stuur(val,[self.xmin,self.x0,self.xmax],[-1.,0.,1.],self.exp)
if val < self.x0:
return stuur(val,[self.xmin,(self.x0+self.xmin)/2,self.x0],[-1.,-0.5,0.],self.exp)
else:
return stuur(val,[self.x0,(self.x0+self.xmax)/2,self.xmax],[0.,0.5,1.0],1./self.exp2)
def setFar(fld):
val = fld.value() / 100.
cam = pf.canvas.camera
res = stuur(val, [0., 0.5, 1.0],
[0.01 * cam.dist, cam.dist, 100. * cam.dist])
#print "%s = %s" % (val,res)
cam.setClip(cam.near, res)
pf.canvas.update()
def dyna(self,x,y):
"""Perform dynamic zoom/pan/rotation functions"""
w,h = self.width(),self.height()
if self.dynamic == "trirotate":
# set all three rotations from mouse movement
# tangential movement sets twist,
# but only if initial vector is big enough
x0 = self.state # initial vector
d = vector.length(x0)
if d > h/8:
x1 = [x-w/2, h/2-y, 0] # new vector
a0 = math.atan2(x0[0],x0[1])
a1 = math.atan2(x1[0],x1[1])
an = (a1-a0) / math.pi * 180
ds = utils.stuur(d,[-h/4,h/8,h/4],[-1,0,1],2)
twist = - an*ds
#print "an,d,ds = ",an,d,ds,twist
self.camera.rotate(twist,0.,0.,1.)
self.state = x1
# radial movement rotates around vector in lens plane
x0 = [self.statex-w/2, h/2-self.statey, 0] # initial vector
dx = [x-self.statex, self.statey-y,0] # movement
b = vector.projection(dx,x0)
#print "x0,dx,b=",x0,dx,b
if abs(b) > 5:
val = utils.stuur(b,[-2*h,0,2*h],[-180,0,+180],1)
rot = [ abs(val),-dx[1],dx[0],0 ]
#print "val,rot=",val,rot
self.camera.rotate(*rot)
self.statex,self.statey = (x,y)
elif self.dynamic == "pan":
dist = self.camera.getDist() * 0.5
# hor movement sets x value of center
# vert movement sets y value of center
#panx = utils.stuur(x,[0,self.statex,w],[-dist,0.,+dist],1.0)
#pany = utils.stuur(y,[0,self.statey,h],[-dist,0.,+dist],1.0)
#self.camera.setCenter (self.state[0] - panx, self.state[1] + pany, self.state[2])
dx,dy = (x-self.statex,y-self.statey)
panx = utils.stuur(dx,[-w,0,w],[-dist,0.,+dist],1.0)
pany = utils.stuur(dy,[-h,0,h],[-dist,0.,+dist],1.0)
#print dx,dy,panx,pany
self.camera.translate(panx,-pany,0)
self.statex,self.statey = (x,y)
elif self.dynamic == "zoom":
# hor movement is lens zooming
f = utils.stuur(x,[0,self.statex,w],[180,self.statef,0],1.2)
self.camera.setLens(f)
elif self.dynamic == "combizoom":
# hor movement is lens zooming
f = utils.stuur(x,[0,self.statex,w],[180,self.state[1],0],1.2)
#print "Lens Zooming: %s" % f
self.camera.setLens(f)
# vert movement is dolly zooming
d = utils.stuur(y,[0,self.statey,h],[0.2,1,5],1.2)
self.camera.setDist(d*self.state[0])
self.update()
def dynarot(self,x,y,action):
"""Perform dynamic rotation operation.
This function processes mouse button events controlling a dynamic
rotation operation. The action is one of PRESS, MOVE or RELEASE.
"""
if action == PRESS:
w,h = self.getSize()
self.state = [self.statex-w/2, self.statey-h/2 ]
elif action == MOVE:
w,h = self.getSize()
# set all three rotations from mouse movement
# tangential movement sets twist,
# but only if initial vector is big enough
x0 = self.state # initial vector
d = length(x0)
if d > h/8:
# pf.debug(d)
x1 = [x-w/2, y-h/2] # new vector
a0 = math.atan2(x0[0],x0[1])
a1 = math.atan2(x1[0],x1[1])
an = (a1-a0) / math.pi * 180
ds = utils.stuur(d,[-h/4,h/8,h/4],[-1,0,1],2)
twist = - an*ds
self.camera.rotate(twist,0.,0.,1.)
self.state = x1
# radial movement rotates around vector in lens plane
x0 = [self.statex-w/2, self.statey-h/2] # initial vector
if x0 == [0.,0.]:
x0 = [1.,0.]
dx = [x-self.statex, y-self.statey] # movement
b = projection(dx,x0)
if abs(b) > 5:
val = utils.stuur(b,[-2*h,0,2*h],[-180,0,+180],1)
rot = [ abs(val),-dx[1],dx[0],0 ]
self.camera.rotate(*rot)
self.statex,self.statey = (x,y)
self.update()
elif action == RELEASE:
self.update()
self.camera.saveModelView()
def scale(self, val):
"""Scale a value to the range -1...1.
If the ColorScale has only one exponent, values in the range
mival..maxval are scaled to the range -1..+1.
If two exponents were specified, scaling is done independently in
the intervals minval..midval and midval..maxval, mapped resp. using
exp2 and exp onto the intevals -1..0 and 0..1.
"""
if self.exp2 == None:
return stuur(val, [self.xmin, self.x0, self.xmax], [-1., 0., 1.],
self.exp)
if val < self.x0:
return stuur(val, [self.xmin, (self.x0 + self.xmin) / 2, self.x0],
[-1., -0.5, 0.], self.exp2)
else:
return stuur(val, [self.x0, (self.x0 + self.xmax) / 2, self.xmax],
[0., 0.5, 1.0], 1. / self.exp)
def dynazoom(self,x,y,action):
"""Perform dynamic zoom operation.
This function processes mouse button events controlling a dynamic
zoom operation. The action is one of PRESS, MOVE or RELEASE.
"""
if action == PRESS:
self.state = [self.camera.getDist(),self.camera.fovy]
elif action == MOVE:
w,h = self.getSize()
# hor movement is lens zooming
f = utils.stuur(x,[0,self.statex,w],[180,self.state[1],0],1.2)
#print "Lens Zooming: %s" % f
self.camera.setLens(f)
# vert movement is dolly zooming
d = utils.stuur(y,[0,self.statey,h],[5,1,0.2],1.2)
self.camera.setDist(d*self.state[0])
self.update()
elif action == RELEASE:
self.update()
self.camera.saveMatrix()
def dynapan(self,x,y,action):
"""Perform dynamic pan operation.
This function processes mouse button events controlling a dynamic
pan operation. The action is one of PRESS, MOVE or RELEASE.
"""
if action == PRESS:
pass
elif action == MOVE:
w,h = self.getSize()
dist = self.camera.getDist() * 0.5
# get distance from where button was pressed
dx,dy = (x-self.statex,y-self.statey)
panx = utils.stuur(dx,[-w,0,w],[-dist,0.,+dist],1.0)
pany = utils.stuur(dy,[-h,0,h],[-dist,0.,+dist],1.0)
# print dx,dy,panx,pany
self.camera.translate(panx,pany,0)
self.statex,self.statey = (x,y)
self.update()
elif action == RELEASE:
self.update()
self.camera.saveMatrix()
def scale(self,val):
"""Scale a value to the range -1...1."""
if self.exp2 == None:
return stuur(val,[self.xmin,self.x0,self.xmax],[-1.,0.,1.],self.exp)
return self.scale2(val)
def scale(self,val):
"""Scale a value to the range -1...1."""
return stuur(val,[self.xmin,self.x0,self.xmax],[-1.,0.,1.],1.)
