Sketcher BSplinePoleWeight
Sketcher BSplinePoleWeight |
Menu location |
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Sketch → Sketcher B-spline tools → Show/Hide B-spline control point weight |
Workbenches |
Sketcher |
Default shortcut |
None |
Introduced in version |
0.19 |
See also |
Create B-spline |
Description
Shows or hides the display of the weight for the control points of a B-spline curve (see B-spline).
B-spline with control point weights displayed in brackets
File:Sketcher BSplineWeightHide.png
Same B-spline without weights
The weights determine how the control points are taken into account. The weight is the factor with with the spline basis is multiplied for the corresponding control point. Therefore, if all weights are equal, the shape of the spline does not change. So the weights relative to each other is important, not the value alone. For example this spline has exactly the same shape as the one in the first image:
Same B-spline as in first image but with different absolute weight values
A weight of 0 means the control point is not taken into account, as if it would not exist. For example if the third control point in the above spline has weight 0, it becomes this:
Same B-spline with a zero weight control point
Usage
- Select a B-spline and apply.
- General: Create sketch, Edit sketch, Attach sketch, Reorient sketch, Validate sketch, Merge sketches, Mirror sketch, Leave sketch, View sketch, View section, Toggle grid, Toggle snap, Configure rendering order, Stop operation
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- Sketcher constraints:
- Dimensional constraints: Dimension, Horizontal distance, Vertical distance, Distance, Auto radius/diameter, Radius, Diameter, Angle, Lock
- Geometric constraints: Coincident (unified), Coincident, Point on object, Horizontal/vertical, Horizontal, Vertical, Parallel, Perpendicular, Tangent or collinear, Equal, Symmetric, Block
- Other constraints: Refraction (Snell's law)
- Constraint tools: Toggle driving/reference constraint, Activate/deactivate constraint
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- Sketcher B-spline tools: Convert geometry to B-spline, Increase B-spline degree, Decrease B-spline degree, Increase knot multiplicity, Decrease knot multiplicity, Insert knot, Join curves
- Sketcher visual: Select unconstrained DoF, Select associated constraints, Select associated geometry, Select redundant constraints, Select conflicting constraints, Show/hide circular helper for arcs, Show/hide B-spline degree, Show/hide B-spline control polygon, Show/hide B-spline curvature comb, Show/hide B-spline knot multiplicity, Show/hide B-spline control point weight, Show/hide internal geometry, Switch virtual space
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