PartDesign Preferences: Difference between revisions

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{{Docnav
|[[PartDesign_MoveFeatureInTree|Move object after other object]]
|[[Fine-tuning|Fine-tuning]]
|[[PartDesign_Workbench|PartDesign]]
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The preferences screen of the PartDesign are found in the Preferences window (Menu Edit → Preferences → PartDesign).
The preferences screen of the [[PartDesign_Workbench|PartDesign Workbench]] are found in the [[Preferences Editor|Preferences Editor]], {{MenuCommand|Edit → Preferences → Part design}}.

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There are two tabs: General, and Shape view.
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===General=== <!--T:2-->

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==General== <!--T:2-->

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In the ''General'' tab you can specify the following:
{| class="wikitable float-right mw-collapsible mw-collapsed"
!style="width: 33%;"|Name
!style="width: 66%;"|Description
|-
| {{MenuCommand|Automatically check model after boolean operation}}
| If checked, after a [[Part_Boolean|boolean operation]] it will be checked if the [https://en.wikipedia.org/wiki/Boundary_representation Boundary representation] (BRep) of the model is valid. This is internally done by the function [[Part CheckGeometry|CheckGeometry]].
|-
| {{MenuCommand|Automatically refine model after boolean operation}}
| If checked, the model will be refined using the function [[Part RefineShape|RefineShape]] after a [[Part_Boolean|boolean operation]].
|-
| {{MenuCommand|Automatically refine model after sketch-based operation}}
| If checked, the model will be refined using the function [[Part RefineShape|RefineShape]] after a sketch of an object has been changed.
|-
| {{MenuCommand|Add name of base object}}
| This option has currently no effect.
|}

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[[File:Preference_Part_Design_Tab_01.png]]
[[File:Preference_Part_Design_Tab_01.png]]

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==Shape view== <!--T:5-->
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===Shape view=== <!--T:3-->
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In the ''Shape view'' tab you can specify the following:
{| class="wikitable float-right mw-collapsible mw-collapsed"
!style="width: 33%;"|Name
!style="width: 66%;"|Description
|-
| {{MenuCommand|Maximum deviation depending on the model bounding box}}
| Maximum [https://www.opencascade.com/doc/occt-7.3.0/overview/html/occt_user_guides__modeling_algos.html#occt_modalg_11_2 linear deflection] of the tesselated objects from their surface
|-
| {{MenuCommand|Maximum angular deflection}}
| Maximum [https://www.opencascade.com/doc/occt-7.3.0/overview/html/occt_user_guides__modeling_algos.html#occt_modalg_11_2 angular deflection] from one tesselated object section to the next section
|}

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In order to display an object efficiently its surface is [https://en.wikipedia.org/wiki/Tessellation_(computer_graphics) tesselated], i.e. it is displayed with some small deviations from it real surface. This applies not only to PartDesign models, but also to other objects in FreeCAD.

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There is a lower limit for the tesselation of 0.01%. If you really want to spend the additional time you can reduce the lower limit even further by opening the menu {{MenuCommand|Tools → Edit parameters...}} This opens the parameter editor where you navigate to {{MenuCommand|BaseApp → Preferences → Mod → Part}}.

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Right click on '''Mesh deviation''' choose in the context menu '''Change value'''. Set the value to the minimum tesselation of your choice. Please keep in mind that the value is in %, i.e. for a value of 0.005% you have to enter "0.00005". The smallest value possible is 1e-7. '''Note:''' In the preferences menu you will still see 0.01% even if you set a lower value.

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[[File:Preference_Part_Design_Tab_02.png]]
[[File:Preference_Part_Design_Tab_02.png]]


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In order to display an object efficiently the surface is tesselated, i.e. it is displayed with some tiny deviations. This tesselation applies not only to PartDesign models, but also to other objects. There is a lower limit for the tesselation of 0.01%. If you really want to spend the additional time you can reduce the lower limit even further. Open Tools->Edit parameters... This opens the parameter editor where you navigate to BaseApp->Preferences->Mod->Part.
|[[PartDesign_MoveFeatureInTree|Move object after other object]]
Right click in the right portion of the Parameter Editor window and from the pop-up menu choose "New float item".
|[[Fine-tuning|Fine-tuning]]
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Set the value to the minimum tesselation of your choice. Please keep in mind that the value in the preferences section is shown in %, i.e. for a value of 0.005% you have to enter "0.00005". The smallest value possible is 1e-7.
|[[PartDesign_Workbench|PartDesign]]
|IconL=
|IconC=Workbench_PartDesign.svg
|IconR=
}}


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[[Category:User Documentation]]
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{{PartDesign Tools navi{{#translation:}}}}
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[[Category:Preferences{{#translation:}}]]

Revision as of 20:17, 23 March 2020

Other languages:

The preferences screen of the PartDesign Workbench are found in the Preferences Editor, Edit → Preferences → Part design.

There are two tabs: General, and Shape view.

General

In the General tab you can specify the following:

Name Description
Automatically check model after boolean operation If checked, after a boolean operation it will be checked if the Boundary representation (BRep) of the model is valid. This is internally done by the function CheckGeometry.
Automatically refine model after boolean operation If checked, the model will be refined using the function RefineShape after a boolean operation.
Automatically refine model after sketch-based operation If checked, the model will be refined using the function RefineShape after a sketch of an object has been changed.
Add name of base object This option has currently no effect.

Shape view

In the Shape view tab you can specify the following:

Name Description
Maximum deviation depending on the model bounding box Maximum linear deflection of the tesselated objects from their surface
Maximum angular deflection Maximum angular deflection from one tesselated object section to the next section

In order to display an object efficiently its surface is tesselated, i.e. it is displayed with some small deviations from it real surface. This applies not only to PartDesign models, but also to other objects in FreeCAD.

There is a lower limit for the tesselation of 0.01%. If you really want to spend the additional time you can reduce the lower limit even further by opening the menu Tools → Edit parameters... This opens the parameter editor where you navigate to BaseApp → Preferences → Mod → Part.

Right click on Mesh deviation choose in the context menu Change value. Set the value to the minimum tesselation of your choice. Please keep in mind that the value is in %, i.e. for a value of 0.005% you have to enter "0.00005". The smallest value possible is 1e-7. Note: In the preferences menu you will still see 0.01% even if you set a lower value.

PartDesign
User documentation
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