Hi Liam,
On 1/9/2015 10:52 AM, Liam wrote:
Just one more question. How do you define: far = config.camFac
your question is a follow up to the script about automatically
positioning the camera when viewing 2d axis aligned image data from thread
http://comments.gmane.org/gmane.comp.science.paraview.user/15091
in that post config.camFac was a variable for used for fine tuning the
camera position. It could be 1.0 to go with default, less than 1.0 to
move camera closer or greater than 1.0 to move the camera away.
Since I originally posted the script I had made improvements to it which
I'll paste below. To remind of the context of the script below: I have
2d axis aligned image data in the object named bovr. the script below
automatically positions the camera and sizes the view according to the
aspect ratio of the data. "config_camZoom" is a fine tuning parameter,
and is documented here
<http://www.vtk.org/doc/nightly/html/classvtkCamera.html#a64512cc87555856a84f6c7d00abe0da9>.
1.0 is the value to start with.
hope this helps
Burlen
# run the pipeline here to get the bounds
rep = Show(bovr)
rep.Representation = 'Outline'
Render()
bounds = bovr.GetDataInformation().GetBounds()
bounds_dx = fabs(bounds[1] - bounds[0])
bounds_dy = fabs(bounds[3] - bounds[2])
bounds_dz = fabs(bounds[5] - bounds[4])
bounds_cx = (bounds[0] + bounds[1])/2.0
bounds_cy = (bounds[2] + bounds[3])/2.0
bounds_cz = (bounds[4] + bounds[5])/2.0
if (bounds_dx == 0):
# yz
dimMode = 2
aspect = bounds_dz/bounds_dy
elif (bounds_dy == 0):
# xz
dimMode = 1
aspect = bounds_dz/bounds_dx
elif (bounds_dz == 0):
#xy
dimMode = 0
aspect = bounds_dy/bounds_dx
else:
#3d
dimMode = 3
aspect = 1.0 # TODO
# position the camera
camFar=1.0
if (dimMode == 0):
# xy
camUp = [0.0, 1.0, 0.0]
camDir = 2
pos = max(bounds_dx, bounds_dy)
camPos = [bounds_cx, bounds_cy, -pos*camFar]
camFoc = [bounds_cx, bounds_cy, bounds_cz]
elif (dimMode == 1):
# xz
camUp = [0.0, 0.0, 1.0]
camDir = 1
pos = max(bounds_dx, bounds_dz)
camPos = [bounds_cx, -pos*camFar, bounds_cz]
camFoc = [bounds_cx, bounds_cy, bounds_cz]
elif (dimMode == 2):
# yz
camUp = [0.0, 0.0, 1.0]
camDir = 0
pos = max(bounds_dy, bounds_dz)
camPos = [ pos*camFar, bounds_cy, bounds_cz]
camFoc = [bounds_cx, bounds_cy, bounds_cz]
else:
# 3d
print '3d cam position is yet TODO'
# configure the view
width = 1024
height = int(width*aspect)
view = GetRenderView()
view.CameraViewUp = camUp
view.CameraPosition = camPos
view.CameraFocalPoint = camFoc
view.UseOffscreenRenderingForScreenshots = 0
view.CenterAxesVisibility = 0
view.OrientationAxesVisibility = 0
view.ViewSize = [width, height]
Render()
view.ResetCamera()
# for fine tuning
config_camZoom = 1.0
cam = GetActiveCamera()
cam.Zoom(config_camZoom)
On 1/9/2015 10:52 AM, Liam wrote:
Hey guys,
Just one more question. How do you define:
far = config.camFac
I cannot find in the code neither config nor camFac variable, so anybody
could explain me how to compute far variable?
This code has helped me so much.
Yhanks in advance,
Liam
_______________________________________________
Powered by www.kitware.com
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the ParaView Wiki at:
http://paraview.org/Wiki/ParaView
Search the list archives at: http://markmail.org/search/?q=ParaView
Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/paraview
_______________________________________________
Powered by www.kitware.com
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the ParaView Wiki at:
http://paraview.org/Wiki/ParaView
Search the list archives at: http://markmail.org/search/?q=ParaView
Follow this link to subscribe/unsubscribe:
http://public.kitware.com/mailman/listinfo/paraview
