Gordon surface vs Filled boundary surface
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Gordon surface vs Filled boundary surface
i tried to model a solid in which a circular top base turns into an elliptical lower one with two different paths.
Missing the necessary feature (a loft driven by curves) a direct solid modelling is impossibile because also the sweep with additional curve gives an absolute incorrect outcome.
The only way i found is a "step by step" surface modelling in which i create 1/4 of external skin and then mirroring it around the axis to get the entire shell after knitted them into an only one. To close the shell i create the top and lower planar surfaces with filled boundary surface and after knitted all them i solidify the model.
I tried to work both with "gordon surfaces" from Curve WB and with "filled boundary surfaces" from Surface WB finding an important difference (or maybe a bug), gordon surfaces don't keep (or don't have) the end condition "normal to edge". The section of model shows how the surfaces are convex in the junction point (see images)
on the contrary the filled boundary surfaces (by coons) seems to keep this end condition
what do you think?
also, do you have a different process to get such model in a better (and quick) way?
Missing the necessary feature (a loft driven by curves) a direct solid modelling is impossibile because also the sweep with additional curve gives an absolute incorrect outcome.
The only way i found is a "step by step" surface modelling in which i create 1/4 of external skin and then mirroring it around the axis to get the entire shell after knitted them into an only one. To close the shell i create the top and lower planar surfaces with filled boundary surface and after knitted all them i solidify the model.
I tried to work both with "gordon surfaces" from Curve WB and with "filled boundary surfaces" from Surface WB finding an important difference (or maybe a bug), gordon surfaces don't keep (or don't have) the end condition "normal to edge". The section of model shows how the surfaces are convex in the junction point (see images)
on the contrary the filled boundary surfaces (by coons) seems to keep this end condition
what do you think?
also, do you have a different process to get such model in a better (and quick) way?
- Attachments
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- Modelling with Gordon.FCStd
- (132.74 KiB) Downloaded 12 times
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- Modelling with Filled boundary surface.FCStd
- (48.44 KiB) Downloaded 12 times
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- Filled Boundary Surface.png (94.89 KiB) Viewed 1483 times
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- Gordon.png (99.63 KiB) Viewed 1483 times
Re: Gordon surface vs Filled boundary surface
Hello @Piero69, greetings to the Community!
A dynamic example (without the need to use the "Curves" wb) of how to manage the guided "Loft" (better defined as "Additive pipe") of three geometries (two ellipses and a circle) along a path, in this case path curved, in which the central ellipse automatically redefines itself as it moves along the curved path.
It is simply an example whose parameters can be expanded by creating new ones.
It is recommended to change the parameters using small increments in order not to send the solver into error.
Un saluto
- Attachments
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- Modelling_no_Gordon_domad.FCStd
- (50.44 KiB) Downloaded 9 times
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- Modelling_no_Gordon_domad.gif (504.77 KiB) Viewed 1299 times
Re: Gordon surface vs Filled boundary surface
yes.. but the second paths is uncontrolled and not defined, sections must follow two definite paths to turn one into others. that's indeed the current limitation of solid modelling in FC.
Currently there is no way to make it in FC but an intricate work by surfaces that gives back just an approximative outcome.
Currently there is no way to make it in FC but an intricate work by surfaces that gives back just an approximative outcome.
domad wrote: ↑Thu Jun 08, 2023 7:55 pmHello @Piero69, greetings to the Community!
A dynamic example (without the need to use the "Curves" wb) of how to manage the guided "Loft" (better defined as "Additive pipe") of three geometries (two ellipses and a circle) along a path, in this case path curved, in which the central ellipse automatically redefines itself as it moves along the curved path.
It is simply an example whose parameters can be expanded by creating new ones.
It is recommended to change the parameters using small increments in order not to send the solver into error.
Un saluto
Re: Gordon surface vs Filled boundary surface
Interesting loft workflow
When the R_curvature_Path become smaller, the path on one side become uncontrollable.
When the R_curvature_Path become smaller, the path on one side become uncontrollable.
Re: Gordon surface vs Filled boundary surface
How about simple Part Loft? No control of the path right ?
Re: Gordon surface vs Filled boundary surface
Hello @Piero69, greetings to the Community!Piero69 wrote: ↑Fri Jun 09, 2023 5:47 am .... but the second paths is uncontrolled and not defined, sections must follow two definite paths to turn one into others. that's indeed the current limitation of solid modelling in FC.
Currently there is no way to make it in FC but an intricate work by surfaces that gives back just an approximative outcome.
A good compromise.
Another alternative, still using the "guided-dynamic loft" function (Additive pipe-dynamic) through the two paths (one curved, the other straight sloping), in this case the central geometry (the ring) is It has been realized using a spline that adapts to the sliding along the two paths giving rise to a good approximation of the curvature of the surface.
- Attachments
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- Modelling_no_Gordon_domad_2.FCStd
- (91.7 KiB) Downloaded 13 times
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- Modelling_no_Gordon_domad_2.png (184.49 KiB) Viewed 1063 times
Re: Gordon surface vs Filled boundary surface
@domad Thanks for the model.
Wondering but can't find how the straight edge is included in the loft path? Thanks.
Wondering but can't find how the straight edge is included in the loft path? Thanks.
Re: Gordon surface vs Filled boundary surface
Each sketch (007, 009. 006) have external references to Sketch002.
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."