def leftDrag(self, event):
"""
Compute the changing rubber band window ending point. Erase the
previous window, draw the new window.
"""
# bugs 1190, 1818 wware 4/05/2006 - sometimes Qt neglects to call leftDown
# before this
if not hasattr(self, "pWxy") or not hasattr(self, "firstDraw"):
return
cWxy = (event.pos().x(), self.glpane.height - event.pos().y())
rbwcolor = self.command.rbwcolor
if not self.firstDraw: #Erase the previous rubber window
drawrectangle(self.pStart, self.pPrev, self.glpane.up,
self.glpane.right, rbwcolor)
self.firstDraw = False
self.pPrev = A(gluUnProject(cWxy[0], cWxy[1], 0.005))
# draw the new rubber band
drawrectangle(self.pStart, self.pPrev, self.glpane.up,
self.glpane.right, rbwcolor)
glFlush()
self.glpane.swapBuffers() # Update display
return
def leftDrag(self, event):
"""
Compute the changing rubber band window ending point. Erase the
previous window, draw the new window.
"""
# bugs 1190, 1818 wware 4/05/2006 - sometimes Qt neglects to call leftDown
# before this
if not hasattr(self, "pWxy") or not hasattr(self, "firstDraw"):
return
cWxy = (event.pos().x(), self.glpane.height - event.pos().y())
rbwcolor = self.command.rbwcolor
if not self.firstDraw: #Erase the previous rubberband window
drawrectangle(self.pStart, self.pPrev, self.glpane.up,
self.glpane.right, rbwcolor)
self.firstDraw = False
self.pPrev = A(gluUnProject(cWxy[0], cWxy[1], 0.005))
# draw the new rubberband window
drawrectangle(self.pStart, self.pPrev, self.glpane.up,
self.glpane.right, rbwcolor)
glFlush()
self.glpane.swapBuffers() # Update display
# Based on a suggestion in bug 2961, I added this second call to
# swapBuffers(). It definitely helps, but the rectangle disappears
# once the zoom cursor stops moving. I suspect this is due to
# a gl_update() elsewhere. I'll ask Bruce about his thoughts on
# this. --Mark 2008-12-22.
self.glpane.swapBuffers()
return
def leftDrag(self, event):
"""
Compute the changing rubber band window ending point. Erase the
previous window, draw the new window.
"""
# bugs 1190, 1818 wware 4/05/2006 - sometimes Qt neglects to call leftDown
# before this
if not hasattr(self, "pWxy") or not hasattr(self, "firstDraw"):
return
cWxy = (event.pos().x(), self.glpane.height - event.pos().y())
rbwcolor = self.command.rbwcolor
if not self.firstDraw: #Erase the previous rubber window
drawrectangle(self.pStart, self.pPrev, self.glpane.up,
self.glpane.right, rbwcolor)
self.firstDraw = False
self.pPrev = A(gluUnProject(cWxy[0], cWxy[1], 0.005))
# draw the new rubber band
drawrectangle(self.pStart, self.pPrev, self.glpane.up,
self.glpane.right, rbwcolor)
glFlush()
self.glpane.swapBuffers() # Update display
return
def leftDrag(self, event):
"""
Compute the changing rubber band window ending point. Erase the
previous window, draw the new window.
"""
# bugs 1190, 1818 wware 4/05/2006 - sometimes Qt neglects to call leftDown
# before this
if not hasattr(self, "pWxy") or not hasattr(self, "firstDraw"):
return
cWxy = (event.pos().x(), self.glpane.height - event.pos().y())
rbwcolor = self.command.rbwcolor
if not self.firstDraw: #Erase the previous rubberband window
drawrectangle(self.pStart, self.pPrev, self.glpane.up,
self.glpane.right, rbwcolor)
self.firstDraw = False
self.pPrev = A(gluUnProject(cWxy[0], cWxy[1], 0.005))
# draw the new rubberband window
drawrectangle(self.pStart, self.pPrev, self.glpane.up,
self.glpane.right, rbwcolor)
glFlush()
self.glpane.swapBuffers() # Update display
# Based on a suggestion in bug 2961, I added this second call to
# swapBuffers(). It definitely helps, but the rectangle disappears
# once the zoom cursor stops moving. I suspect this is due to
# a gl_update() elsewhere. I'll ask Bruce about his thoughts on
# this. --Mark 2008-12-22.
self.glpane.swapBuffers()
return
def draw(self):
"""
Draw the rectangle
"""
color = get_selCurve_color(self.selSense)
drawrectangle(self.ptlist[0], self.ptlist[1], self.right, self.up, color)
def leftUp(self, event):
"""
Erase the final rubber band window and do zoom if user indeed draws a
rubber band window.
"""
# bugs 1190, 1818 wware 4/05/2006 - sometimes Qt neglects to call
# leftDown before this
if not hasattr(self, "pWxy") or not hasattr(self, "firstDraw"):
return
cWxy = (event.pos().x(), self.glpane.height - event.pos().y())
zoomX = (abs(cWxy[0] - self.pWxy[0]) + 0.0) / (self.glpane.width + 0.0)
zoomY = (abs(cWxy[1] - self.pWxy[1]) + 0.0) / (self.glpane.height + 0.0)
# The rubber band window size can be larger than that of glpane.
# Limit the zoomFactor to 1.0
zoomFactor = min(max(zoomX, zoomY), 1.0)
# Huaicai: when rubber band window is too small,
# like a double click, a single line rubber band, skip zoom
DELTA = 1.0E-5
if self.pWxy[0] == cWxy[0] or self.pWxy[1] == cWxy[1] \
or zoomFactor < DELTA:
self.command.command_Done()
return
# Erase the last rubber-band window
rbwcolor = self.command.rbwcolor
drawrectangle(self.pStart, self.pPrev, self.glpane.up,
self.glpane.right, rbwcolor)
glFlush()
self.glpane.swapBuffers()
winCenterX = (cWxy[0] + self.pWxy[0]) / 2.0
winCenterY = (cWxy[1] + self.pWxy[1]) / 2.0
winCenterZ = \
glReadPixelsf(int(winCenterX), int(winCenterY), 1, 1,
GL_DEPTH_COMPONENT)
assert winCenterZ[0][0] >= 0.0 and winCenterZ[0][0] <= 1.0
if winCenterZ[0][0] >= GL_FAR_Z: # window center touches nothing
p1 = A(gluUnProject(winCenterX, winCenterY, 0.005))
p2 = A(gluUnProject(winCenterX, winCenterY, 1.0))
los = self.glpane.lineOfSight
k = dot(los, -self.glpane.pov - p1) / dot(los, p2 - p1)
zoomCenter = p1 + k*(p2-p1)
else:
zoomCenter = \
A(gluUnProject(winCenterX, winCenterY, winCenterZ[0][0]))
self.glpane.pov = V(-zoomCenter[0], -zoomCenter[1], -zoomCenter[2])
# The following are 2 ways to do the zoom, the first one
# changes view angles, the 2nd one change viewing distance
# The advantage for the 1st one is model will not be clipped by
# near or back clipping planes, and the rubber band can be
# always shown. The disadvantage: when the view field is too
# small, a selection window may be actually act as a single pick.
# rubber band window will not look as rectangular any more.
#zf = self.glpane.getZoomFactor() # [note: method does not exist]
#zoomFactor = pow(zoomFactor, 0.25)
#zoomFactor *= zf
#self.glpane.setZoomFactor(zoomFactor) # [note: method does not exist]
# Change viewing distance to do zoom. This works better with
# mouse wheel, since both are changing viewing distance, and
# it's not too bad of model being clipped, since the near/far clip
# plane change as scale too.
self.glpane.scale *= zoomFactor
self.command.command_Done()
return
def draw(self):
"""
Draw the rectangle
"""
color = get_selCurve_color(self.selSense)
drawrectangle(self.ptlist[0], self.ptlist[1], self.right, self.up, color)
def leftUp(self, event):
"""
Erase the final rubber band window and do zoom if user indeed draws a
rubber band window.
"""
# bugs 1190, 1818 wware 4/05/2006 - sometimes Qt neglects to call
# leftDown before this
if not hasattr(self, "pWxy") or not hasattr(self, "firstDraw"):
return
cWxy = (event.pos().x(), self.glpane.height - event.pos().y())
zoomX = (abs(cWxy[0] - self.pWxy[0]) + 0.0) / (self.glpane.width + 0.0)
zoomY = (abs(cWxy[1] - self.pWxy[1]) + 0.0) / (self.glpane.height +
0.0)
# The rubber band window size can be larger than that of glpane.
# Limit the zoomFactor to 1.0
zoomFactor = min(max(zoomX, zoomY), 1.0)
# Huaicai: when rubber band window is too small,
# like a double click, a single line rubber band, skip zoom
DELTA = 1.0E-5
if self.pWxy[0] == cWxy[0] or self.pWxy[1] == cWxy[1] \
or zoomFactor < DELTA:
self.command.Done()
return
# Erase the last rubber-band window
rbwcolor = self.command.rbwcolor
drawrectangle(self.pStart, self.pPrev, self.glpane.up,
self.glpane.right, rbwcolor)
glFlush()
self.glpane.swapBuffers()
winCenterX = (cWxy[0] + self.pWxy[0]) / 2.0
winCenterY = (cWxy[1] + self.pWxy[1]) / 2.0
winCenterZ = \
glReadPixelsf(int(winCenterX), int(winCenterY), 1, 1,
GL_DEPTH_COMPONENT)
assert winCenterZ[0][0] >= 0.0 and winCenterZ[0][0] <= 1.0
if winCenterZ[0][0] >= GL_FAR_Z: # window center touches nothing
p1 = A(gluUnProject(winCenterX, winCenterY, 0.005))
p2 = A(gluUnProject(winCenterX, winCenterY, 1.0))
los = self.glpane.lineOfSight
k = dot(los, -self.glpane.pov - p1) / dot(los, p2 - p1)
zoomCenter = p1 + k * (p2 - p1)
else:
zoomCenter = \
A(gluUnProject(winCenterX, winCenterY, winCenterZ[0][0]))
self.glpane.pov = V(-zoomCenter[0], -zoomCenter[1], -zoomCenter[2])
# The following are 2 ways to do the zoom, the first one
# changes view angles, the 2nd one change viewing distance
# The advantage for the 1st one is model will not be clipped by
# near or back clipping planes, and the rubber band can be
# always shown. The disadvantage: when the view field is too
# small, a selection window may be actually act as a single pick.
# rubber ban window will not look as rectanglular any more.
#zf = self.glpane.getZoomFactor()
#zoomFactor = pow(zoomFactor, 0.25)
#zoomFactor *= zf
#self.glpane.setZoomFactor(zoomFactor)
# Change viewing distance to do zoom. This works better with
# mouse wheel, since both are changing viewing distance, and
# it's not too bad of model being clipped, since the near/far clip
# plane change as scale too.
self.glpane.scale *= zoomFactor
self.command.Done(exit_using_done_or_cancel_button=False)
return
