Search found 4668 matches

by microelly2
Thu May 28, 2020 4:19 pm
Forum: Help on using FreeCAD
Topic: Intersection of 2 protrusions [SOLVED]
Replies: 9
Views: 127

Re: Intersection of 2 protrusions that should not be empty

Welcome to the forum.
Can you upload the file?
Sometimes there are errors if the parts have faces in the same plane.
Maybe this is the reason.
by microelly2
Fri May 22, 2020 5:48 pm
Forum: Help on using FreeCAD
Topic: Making Sweep using Bezier Curve
Replies: 6
Views: 196

Re: Making Sweep using Bezier Curve

in inflection points of splines where the curvature becomes zero the normal and the binormal vectors can flip by 180°.

possibilities:
1. split ypur curve into subcurvs without inflection points.
2. insert extra ribs to these tricky places.
3 use other methods than Part.Sweep
by microelly2
Fri May 22, 2020 9:39 am
Forum: Open discussion
Topic: GeoData Workbench
Replies: 40
Views: 2251

Re: GeoData Workbench

yes they are all needed, but it seams gdal is only needed for the some special import geodat import AST (gdal) It should be possible to run GeoData without it. microelly2 should now any better ping Yes, gdal is only used for this special case. The same is for cv2 - it is not needed for the core dow...
by microelly2
Thu May 21, 2020 7:42 pm
Forum: Open discussion
Topic: node editor - pyflow
Replies: 252
Views: 19576

Re: node editor - pyflow

It would be very helpful to do this parameter based as it would give much more and easier control in case of variation. Would it be possible to have control about the "unfolded" width and height of each triangulated quad by the node editor pyflow? Yes we can. This is the construction of an offset c...
by microelly2
Wed May 20, 2020 9:45 pm
Forum: Open discussion
Topic: node editor - pyflow
Replies: 252
Views: 19576

Re: node editor - pyflow

approximate a curve by a simple bezier curve (4 Poles) with tangent constraints at the endings.
phpBB [video]
by microelly2
Wed May 20, 2020 4:44 am
Forum: Open discussion
Topic: node editor - pyflow
Replies: 252
Views: 19576

Re: node editor - pyflow

HakanSeven12 wrote:
Tue May 19, 2020 6:37 pm
Is there a node for delaunay triangulation?
https://youtu.be/fV-Y8beWCpQ
by microelly2
Tue May 19, 2020 6:34 pm
Forum: Open discussion
Topic: node editor - pyflow
Replies: 252
Views: 19576

Re: node editor - pyflow

Find a curve with these constraints:
start and endpoint
tangent direction at start and endpoint
curvature at start and endpoint

result is a 6 poles bspline degree 3.
phpBB [video]
by microelly2
Tue May 19, 2020 6:31 pm
Forum: Forum in Deutsch
Topic: Krümmungsstetigkeit
Replies: 6
Views: 270

Re: Krümmungsstetigkeit

Ich habe mir nochmal Gedanken gemacht, wie man die Krümmungen und Tangenten als Randwerte für eine Kurve hinbekommt.
Mit 6 Polen kann man eine solche Kurve berechnen lassen.
phpBB [video]
by microelly2
Tue May 19, 2020 6:26 pm
Forum: Open discussion
Topic: GeoData Workbench
Replies: 40
Views: 2251

Re: GeoData Workbench

the use of urllib instead of requests would be another option, as urllib is included in FreeCAD LibPack, but it seams this could be some crucial question. This should not be a problem. Another idea is to download the whole osm database or a country and store it into a local database and implement t...
by microelly2
Sun May 17, 2020 9:45 am
Forum: Forum in Deutsch
Topic: Krümmungsstetigkeit
Replies: 6
Views: 270

Re: B-Spline Kontur durch parametrisierbare Punkte

Hier mal, wie man Tangenten durch Punkte an Splines mit dem Sketcher hinbekommnt. https://youtu.be/3a1rmIEWYLI Für das ganze Hin- und Hergerechne kann ich nur Das Nurbs Buch von Piegl u. Tiller empfehlen. Der letzte Teil Deiner Aussage hat mich etwas irritiert. Du sagst, wenn die beiden Abstände de...