Curves workbench
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Re: Curves workbench
Lofted output there aren't any error with theses parameters.
why?
why?
- Attachments
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- PipeShell_ok.FCStd
- (61.31 KiB) Downloaded 35 times
Re: Curves workbench
I switched the posted file to lofted, solid, it still failed.
But, if I reduce the sample to 40 it works. 80 samples fail. 60 samples fails. 45 samples...crash.
But, if I reduce the sample to 40 it works. 80 samples fail. 60 samples fails. 45 samples...crash.
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
Re: Curves workbench
I'm wondering if this is one of those situations where the geometry check just isn't up to the task.
I tinkered more with this, changing some shapes. It produces a nice tube. But, essentially fails the geom check with almost all settings.
But if I mesh it and use Blender to check if it's manifold it reports no issues. It is a really messy mesh...
I tinkered more with this, changing some shapes. It produces a nice tube. But, essentially fails the geom check with almost all settings.
But if I mesh it and use Blender to check if it's manifold it reports no issues. It is a really messy mesh...
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
Re: Curves workbench
Here the Gordon test ok with geometry check.
I'm just trying to figure out how to create valid solids from things in the Curves workbench. It seems rather hit or miss, and I want to understand if it's me, if I need more understanding of some factors, etc.
(note: deleted the offset to get the file size down.)
If I now create an offset, the edges created by the offset fail geom check.
I have tried various settings in the Shape Approximation properties of the JoinCurves to no avail. I'm just trying to figure out how to create valid solids from things in the Curves workbench. It seems rather hit or miss, and I want to understand if it's me, if I need more understanding of some factors, etc.
(note: deleted the offset to get the file size down.)
- Attachments
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- OffsetInvalid.FCStd
- (684.75 KiB) Downloaded 29 times
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
Re: Curves workbench
reduce Max Ctrl Pts to 20, make a simpler gordon geometry. Then there are not error.
Re: Curves workbench
I'm trying to get some sort of rule of thumb or general understanding that could be communicated to others or in a wiki.
I have tried a series of reducing points (in this gordon and samples in pipeshells). There seems to be no methodical way to define how to make solids that consistently pass geometry check. Trial and error appears to work sometimes, but not others.
Yet, in most cases, a mesh of the solid, though messy, appears to be valid.
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
Re: Curves workbench
Did the behaviour of the GeomInfo change?
I remember it staying on until toggled off.
Now any action that results in nothing being selected hides the display. (Selecting something unhides.)
And, a question: would it be possible to modify this code to show the position of the object being moved with the transform axis?
I remember it staying on until toggled off.
Now any action that results in nothing being selected hides the display. (Selecting something unhides.)
And, a question: would it be possible to modify this code to show the position of the object being moved with the transform axis?
Star Trek II: The Wrath of Khan: Spock: "...His pattern indicates two-dimensional thinking."
Re: Curves workbench
@Chris_G would you be interested in mentoring a GSoC applicant to help migrate functionality from Curves to Surface WB ?Chris_G wrote:
Alone you go faster. Together we go farther
Please mark thread [Solved]
Want to contribute back to FC? Checkout:
'good first issues' | Open TODOs and FIXMEs | How to Help FreeCAD | How to report Bugs
Please mark thread [Solved]
Want to contribute back to FC? Checkout:
'good first issues' | Open TODOs and FIXMEs | How to Help FreeCAD | How to report Bugs
Re: Curves workbench
First extend curve doesn't works very well at a start side.
- Attachments
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- extend.FCStd
- (16.25 KiB) Downloaded 27 times
Re: Curves workbench
The curve is wrong at its end.
the last two poles are at the same position, so the 1st derivative goes down to zero, and its direction becomes undefined.
Code: Select all
e1.derivative1At(e1.LastParameter)
# >>> Vector (0.0, -4.784750643693769e-06, -2.940684252905612e-05)