PartDesign Preferences: Difference between revisions

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{{Docnav|[[PartDesign_MoveFeatureInTree|Move object after other object]]|[[Fine-tuning|Fine-tuning]]|[[PartDesign_Workbench|PartDesign]]|IconL=|IconC=Workbench_PartDesign.svg|IconR=}}
{{Docnav|[[PartDesign_MoveFeatureInTree|Move object after other object]]|[[Fine-tuning|Fine-tuning]]|[[PartDesign_Workbench|PartDesign]]|IconL=|IconC=Workbench_PartDesign.svg|IconR=}}

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<div style="float:right; clean:both; margin-left:0.5em;">__TOC__</div>


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The preferences screen of the PartDesign are found in the menu {{MenuCommand|Edit → Preferences → Part design}}.
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.
===General=== <!--T:2-->

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


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| {{MenuCommand|Automatically check model after boolean operation}}
| {{MenuCommand|Automatically check model after boolean operation}}
| If checked, after a [[Part_Booleans|boolean operation]] it will be checked if the [https://en.wikipedia.org/wiki/Boundary_representation Boundary representation] (BRep) of the model is valid.<br/>'''Note:''' This option does not invoke the feature [[Part CheckGeometry|CheckGeometry]].
| If checked, after a [[Part_Booleans|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]].
|-
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| {{MenuCommand|Automatically refine model after boolean operation}}
| {{MenuCommand|Automatically refine model after boolean operation}}
| If checked, the model will be refined using the feature [[Part RefineShape|RefineShape]] after a [[Part_Booleans|boolean operation]].
| If checked, the model will be refined using the function [[Part RefineShape|RefineShape]] after a [[Part_Booleans|boolean operation]].
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| {{MenuCommand|Automatically refine model after sketch-based operation}}
| {{MenuCommand|Automatically refine model after sketch-based operation}}
| If checked, the model will be refined using the feature [[Part RefineShape|RefineShape]] after a sketch of an object has been changed.
| If checked, the model will be refined using the function [[Part RefineShape|RefineShape]] after a sketch of an object has been changed.
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| {{MenuCommand|Add name of base object}}
| {{MenuCommand|Add name of base object}}
| This option has no effect (sic!)
| 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-->
==Shape view== <!--T:5-->


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| {{MenuCommand|Maximum deviation depending on the model bounding box}}
| {{MenuCommand|Maximum deviation depending on the model bounding box}}
| Maximal [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
| 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
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| {{MenuCommand|Maximum angular deflection}}
| {{MenuCommand|Maximum angular deflection}}
| Maximal [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
| 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 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.<br/>
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}}.
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.
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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{{PartDesign Tools navi}}
{{PartDesign Tools navi}}

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[[Category:User Documentation]]
[[Category:PartDesign]]
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Revision as of 15:07, 25 September 2019

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.