GetEdgeCount() Bug?
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On 06/02/2012 at 11:18, xxxxxxxx wrote:
Ah... you may be using a pre-R13 version. SetSelectedEdges() was added to the Python SDK in version R13.
Here's how to do without SetSelectedEdges() :
import c4d from c4d import utils def main() : nbr = utils.Neighbor() nbr.Init(op) indices = [1 for i in range(nbr.GetEdgeCount()*2)] edges = c4d.BaseSelect() edges.SetAll(indices) edges.CopyTo(op.GetEdgeS()) c4d.EventAdd() if __name__=='__main__': main()SetSelectedEdges() works with unique edges but GetEdgeS() not. I just reversed engineered GetEdgeS() getting the current selection and it's 24 edges when we select all the edges. In R13 with GetSelectedEdges() it's 12 edges. So it's more or less what you tried before
except the edges array is built with selection states values. -
THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 06/02/2012 at 12:11, xxxxxxxx wrote:
Lol.
Isn't it fun trying to troubleshoot these functions when they get updated so often from version to version?
That code you posted brings me back to my original problem.
*2 works for a cube. But it does not select all edges on a sphere for example.
I've even tried multiplying nbr.GetEdgeCount() * 3.02 and that still doesn't work in all cases.
But lets forget about R12 at this point. And call it not supported. And just focus on R13 from now on...OK?
No sense trying to get the older version to work at this point.Can you please post a code example that selects all edges in an object for R13 using the "op.SetSelectedEdges" function?
But before you post it. Please try it out on both a cube and a sphere.
I'm still getting the same results in R13 as r12. And I want to see if you get the same results.Thanks,
-ScottA -
THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 06/02/2012 at 12:27, xxxxxxxx wrote:
Originally posted by xxxxxxxx
Can you please post a code example that selects all edges in an object for R13 using the "op.SetSelectedEdges" function?
But before you post it. Please try it out on both a cube and a sphere.
I'm still getting the same results in R13 as r12. And I want to see if you get the same results.Here's the working code for any polygon object in R13 using SetSelectedEdges() :
import c4d from c4d import utils def main() : nbr = utils.Neighbor() nbr.Init(op) # Initialize neighbor with a polygon object selection = [1 for i in range(nbr.GetEdgeCount())] # Select all the edges = set them to 1 edges = c4d.BaseSelect() edges.SetAll(selection) # Set the edges selection with the selection list op.SetSelectedEdges(nbr, edges, c4d.EDGESELECTIONTYPE_SELECTION) # Select edges from our edges selection c4d.EventAdd() # Update CINEMA if __name__=='__main__': main() -
THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 06/02/2012 at 12:34, xxxxxxxx wrote:
Excellent.
I think I've got it all sorted out now.Thanks a lot for sticking with me on this one.
-ScottA
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THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 06/02/2012 at 12:53, xxxxxxxx wrote:
If you want to select all edges you should be able to use
edges.SelectAll(edgecount) obj.SetSelectedEdges(nibr,edges,c4d.EDGESELECTIONTYPE_SELECTION) -
THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 06/02/2012 at 13:16, xxxxxxxx wrote:
Yeah. That's true Lennart.
I'm using arrays in my examples because it gives me a way to iterate through my selections.
AFAIK. BaseSelection is not iterable. That's why I'm using arrays(lists) in my code.Probably a good idea that you pointed that out for the sake of others new to this subject that don't need or want that extra iteration ability.
-ScottA
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THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 06/02/2012 at 15:17, xxxxxxxx wrote:
You could iterate using enumerate and get a list:
# Get Set Edges Test R13 import c4d from c4d import utils as u def main() : obj = doc.GetActiveObject() if obj is None or not obj.CheckType(c4d.Opolygon) : return True n = u.Neighbor() n.Init(obj) edgecount = n.GetEdgeCount() print edgecount edges = obj.GetSelectedEdges(n, c4d.EDGESELECTIONTYPE_SELECTION) elist = [] for i, sel in enumerate(edges.GetAll(edgecount)) : if sel: elist.append(1) else: elist.append(0) print elist edges.SetAll(elist) obj.SetSelectedEdges(n, edges, c4d.EDGESELECTIONTYPE_SELECTION) c4d.EventAdd() if __name__=='__main__': main() -
THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 06/02/2012 at 17:59, xxxxxxxx wrote:
Yeah I know. That's what I've been doing in R12.
Although lately I've been using a different method where I iterate from inside of the the lists themselves.
Same difference.I got hung up on trying to select all edges. GetEdgeCount() didn't work as I expected it to work.
I'm good to go now. Except that now I'm forced to use R13.
I'm still thinking that this should be possible to do in R12 though.
Since we can iterate selections using lists. I would think that we should be able to step through the polygons and get & set every edge that way. But I couldn't make it work.
It might require getting each polygon point(A,B,C,D).
Then using that to find all the edges. And putting that into a list.
Then using that list to select the edges.That's kind of advanced stuff for me right now. I'm still not very good with polygons & edges.
-ScottA
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THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 07/02/2012 at 01:28, xxxxxxxx wrote:
Originally posted by xxxxxxxx
I got hung up on trying to select all edges. GetEdgeCount() didn't work as I expected it to work.
I'm good to go now. Except that now I'm forced to use R13.
I'm still thinking that this should be possible to do in R12 though.Here's the code for R12:
import c4d from c4d import utils def main() : numEdges = op.GetPolygonCount()*4 edges = c4d.BaseSelect() edges.SelectAll(numEdges-1) edges.CopyTo(op.GetEdgeS()) c4d.EventAdd() if __name__=='__main__': main()As you can see, the number of edges is the number of polygons multiplied by 4 (4 edges per polygon). GetEdgeS() doesn't work with shared edges, Neighbor and the methods using it (GetSelectedEdges(), SetSelectedEdges()) do.
I select all the edges to numEdges-1 and not to numEdges because I found an issue with SelectAll(). The number of selected elements is number+1 the number you pass to the method. -
THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 07/02/2012 at 08:01, xxxxxxxx wrote:
Thanks for that Yannick.
But I should have mentioned that I needed to be able to select all edges using a list. I'll see if I can use this in my project using lists.This is all based on a bigger project I'm working on. Where I'm trying to select just one side of the outer edges of "shells" (also known as "islands" ) inside of a polygon. And convert them to splines.
Maya has tools and functions for working with polygon and UV shells and I'm trying to build my own in C4D.
Currently the only way I can do this is to use the ExplodeSegments command. Then select the desired edges on each generated polygon object.
This works ok. (I posted the script on CGTalk) But the problem is I have to generate thousands of objects this way(Ouch!). Just to generate those splines. And that's both very slow and very resource hungry. And frankly a bit of a hack.So now I'm trying to use lists to try and cut these shells inside the polygon into groups so I can work with them as if they were individual objects. Sort of like using lists in place of a selection tags.
I need to be able to select all edges...But not just simply all edges. All edges per each shell... And not just all edges..But only the edges on one side of all these shells.
It's a rather complex problem.I posted about it in another thread in the C++ forum.
The source code in the ExplodeSegments command might help me learn how to split up a polygon into groups. I don't even know if my approach is a good one.This is what I've come up with so far.
It's almost there(it currently only selects the first shell's edges). But then I ran into selection problems:import c4d from c4d import utils def main() : ################## Put polygon shells into an array ##################################### c4d.CallCommand(12187) #Polygons Mode c4d.CallCommand(13324) #Deselect All polygons--Start from no polygons selected lastsel = 0 obj = doc.GetActiveObject() polycount = obj.GetPolygonCount() selected = obj.GetPolygonS() #The selected polygons selected.Select(0) #Select the first polygon c4d.CallCommand(12557) #Select Connected polygons selectedcount = selected.GetCount()#How many polygons per shell polygons = c4d.BaseSelect() polysPerShell = 0 #The number of polygons per shell polygonlist = [] #The list of shell arrays(contains the individual lists for each shell) for i in xrange(polycount/selectedcount) : #print "shells:" ,i newpolygonlist = [] #This list will be used to hold the selected polygons for i in xrange(polycount) : #Loop amount = total number of polygons if selected.IsSelected(i) : #Look for selected polygons polysPerShell = polysPerShell +1 #The number of polygons per shell newpolygonlist.append(i)#Fill the list with the selected polygons lastsel = i #This is the last selected polygon's Id# polygonlist.append(newpolygonlist) c4d.StatusSetSpin() #Show the spinning staus bar c4d.CallCommand(13324) #Deselect All polygons selected.Select(lastsel+1) #Select the first polygon in the next shell c4d.CallCommand(12557) #Select Connected polygons ################### Done with loop ################################################# pnts = obj.GetAllPoints() edges = c4d.BaseSelect() pntcount = obj.GetPointCount() nibr = utils.Neighbor() #Assigns neighbor to a variable nibr.Init(obj) #Instantiates the neighbor class edgecount = nibr.GetEdgeCount() #Get all the edges in the entire polygon object #print "total edges:", + edgecount #print polysPerShell shellpolylist = [] for i in xrange(len(polygonlist)) : #This gives the number of shells shells = i #print shells for shells in polygonlist: #For each shell of polygons in the "polygonlist" array #print shells for j in xrange(0,polysPerShell) : #For each shell element #print j selected.Select(j) #Select each element(polygon) shellpolylist.append(j) #Add each polygon to the list edges.Select(shellpolylist[1]) edges.Select(shellpolylist[5]) edges.Select(shellpolylist[9]) #print shellpolylist edges.CopyTo(obj.GetEdgeS()) #Convert selected objects to splines utils.SendModelingCommand(c4d.MCOMMAND_EDGE_TO_SPLINE, list = [obj], mode = c4d.MODIFY_ALL, bc = c4d.BaseContainer(), doc = doc) c4d.CallCommand(16351) #Edges c4d.StatusClear() #Remove the spinning bar..We're done #print edgelist c4d.EventAdd() if __name__=='__main__': main()I'm not sure if I'm on the right track or not.
I'm in a little bit over my head. And just looking for advice on doing this.
Not really a support issue. Just wanted to let you see what I was trying to do in the bigger picture.-ScottA