Difference between revisions of "Sketcher BSplineComb"
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<languages/> | <languages/> | ||
<translate> | <translate> | ||
+ | |||
+ | <!--T:10--> | ||
+ | {{Docnav | ||
+ | |[[Sketcher_BSplinePolygon|Show/Hide B-spline control polygon]] | ||
+ | |[[Sketcher_BSplineKnotMultiplicity|Show/Hide B-spline knot multiplicity]] | ||
+ | |[[Sketcher_Workbench|Sketcher]] | ||
+ | |IconL=Sketcher_BSplinePolygon.svg | ||
+ | |IconR=Sketcher_BSplineKnotMultiplicity.svg | ||
+ | |IconC=Workbench_Sketcher.svg | ||
+ | }} | ||
+ | |||
<!--T:1--> | <!--T:1--> | ||
{{GuiCommand | {{GuiCommand | ||
|Name=Sketcher BSplineComb | |Name=Sketcher BSplineComb | ||
− | + | |MenuLocation=Sketch → Sketcher B-spline tools → Show/hide B-spline curvature comb | |
− | |MenuLocation=Sketch → Sketcher B-spline tools → | + | |Workbenches=[[Sketcher_Workbench|Sketcher]] |
− | | | + | |Version=0.17 |
− | SeeAlso=[[Sketcher | + | |SeeAlso=[[Sketcher_CompCreateBSpline|Sketcher Create B-spline]] |
}} | }} | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
==Description== <!--T:4--> | ==Description== <!--T:4--> | ||
<!--T:9--> | <!--T:9--> | ||
− | Shows or hides the display of the Curvature Comb of a B-spline ( see | + | Shows or hides the display of the Curvature Comb of a B-spline (see [[B-Splines|this page]] for more info about B-splines). |
− | + | <!--T:16--> | |
− | + | The curvature comb indicates the curvature (value of the second-order derivative) of the B-spline at every position. The higher the curvature at a position, the more is the the comb away from the curve. For positive curvatures ("turn to the right"), the comb is at the other side of the curve than for negative curvatures. | |
+ | </translate> | ||
+ | [[File:sketcher_BSplineCurvatureShow.png]] | ||
+ | <translate> | ||
+ | <!--T:18--> | ||
+ | {{Caption|B-spline with a saddle point at its mid position - the curvature comb there is zero.}} | ||
+ | ==Usage== <!--T:19--> | ||
− | + | <!--T:5--> | |
+ | # Select a B-spline | ||
+ | # Either use the toolbar button {{Button|[[File:Sketcher_BSplineComb.svg|16px]] [[Sketcher_BSplineComb|Show/hide B-spline curvature comb]]}} or use the menu {{MenuCommand|Sketch → Sketcher B-spline tools → Show/Hide B-spline curvature comb}}. | ||
− | |||
− | |||
<!--T:8--> | <!--T:8--> | ||
− | [[ | + | {{Docnav |
+ | |[[Sketcher_BSplinePolygon|Show/Hide B-spline control polygon]] | ||
+ | |[[Sketcher_BSplineKnotMultiplicity|Show/Hide B-spline knot multiplicity]] | ||
+ | |[[Sketcher_Workbench|Sketcher]] | ||
+ | |IconL=Sketcher_BSplinePolygon.svg | ||
+ | |IconR=Sketcher_BSplineKnotMultiplicity.svg | ||
+ | |IconC=Workbench_Sketcher.svg | ||
+ | }} | ||
+ | |||
</translate> | </translate> | ||
− | {{ | + | {{Sketcher Tools navi{{#translation:}}}} |
+ | {{Userdocnavi{{#translation:}}}} |
Latest revision as of 17:04, 14 September 2021
Sketcher BSplineComb |
Menu location |
---|
Sketch → Sketcher B-spline tools → Show/hide B-spline curvature comb |
Workbenches |
Sketcher |
Default shortcut |
None |
Introduced in version |
0.17 |
See also |
Sketcher Create B-spline |
Description
Shows or hides the display of the Curvature Comb of a B-spline (see this page for more info about B-splines).
The curvature comb indicates the curvature (value of the second-order derivative) of the B-spline at every position. The higher the curvature at a position, the more is the the comb away from the curve. For positive curvatures ("turn to the right"), the comb is at the other side of the curve than for negative curvatures.
B-spline with a saddle point at its mid position - the curvature comb there is zero.
Usage
- Select a B-spline
- Either use the toolbar button Show/hide B-spline curvature comb or use the menu Sketch → Sketcher B-spline tools → Show/Hide B-spline curvature comb.
Sketcher
- The tools: New sketch, Edit sketch, Leave sketch, View sketch, View section, Map sketch to face, Reorient sketch, Validate sketch, Merge sketches, Mirror sketch
- Sketcher geometries: Point, Line by 2 point, Create an arc, Arc, Arc by 3 Point, Create a circle, Circle, Circle by 3 Point, Create a conic, Ellipse by center, Ellipse by 3 points, Arc of ellipse, Arc of hyperbola, Arc of parabola, Create a B-spline, Create B-spline, Create periodic B-pline, Polyline (multiple-point line), Rectangle, Create regular polygon, Triangle, Square, Pentagon, Hexagon, Heptagon, Octagon, Create Regular Polygon, Slot, Fillet, Trimming, Extend, External Geometry, CarbonCopy, Construction Mode
- Sketcher constraints
- Geometric constraints Coincident, Point On Object, Vertical, Horizontal, Parallel, Perpendicular, Tangent, Equal Length, Symmetric, Constrain Block
- Dimensional constraints Lock, Horizontal Distance, Vertical Distance, Distance, Radius, Internal Angle, Snell's Law, Internal Alignment, Toggle reference/driving constraint,
- Sketcher tools Select solver DOFs, Close Shape, Connect Edges, Select Constraints, Select Origin, Select Vertical Axis, Select Horizontal Axis, Select Redundant Constraints, Select Conflicting Constraints, Select Elements Associated with constraints, Show/Hide internal geometry, Symmetry, Clone, Copy, Move, Rectangular Array, Delete All Geometry, Delete All Constraints
- Sketcher B-spline tools Show/Hide B-spline degree, Show/Hide B-spline control polygon, Show/Hide B-spline curvature comb, Show/Hide B-spline knot multiplicity, Convert Geometry to B-spline, Increase degree, Increase knot multiplicity, Decrease knot multiplicity
- Sketcher virtual space Switch Virtual Space
User documentation
- Getting started
- Installation: Download, Windows, Linux, Mac, Additional components, Docker, AppImage, Ubuntu Snap
- Basics: About FreeCAD, Interface, Mouse navigation, Selection methods, Object name, Preferences, Workbenches, Document structure, Properties, Help FreeCAD, Donate
- Help: Tutorials, Video tutorials
- Workbenches: Std Base, Arch, Draft, FEM, Image, Inspection, Mesh, OpenSCAD, Part, PartDesign, Path, Points, Raytracing, Reverse Engineering, Sketcher, Spreadsheet, Start, Surface, TechDraw, Test Framework, Web
- Deprecated or unmaintained workbenches: Complete, Drawing, Robot
- Hubs: User hub, Power users hub, Developer hub