* Sketcher: Fix symmetry of slot redundancy false positive
Perturb symmetric geometries when using the 'create symmetric constraints' option to avoid numerical singularities in the solver (Jacobian Rank).
If geometry is "perfect", the solver cannot distinguish between the derivative of a Symmetry constraint and an Equal constraint, flagging one as redundant.
Currently, the selection batching optimization introduced in #26663
stores ElementItem/ConstraintItem pointers in a buffer to be processed
on the next event loop cycle via `QTimer::singleShot`.
When a constraint is applied,
`slotElementsChanged()/slotConstraintsChanged()`
rebuilds the list widget, destroying all items. However, the selection
buffer was not cleared, leaving dangling pointers. When
`processSelectionBuffer()`
executed, it attempted to call `QListWidget::row()` on deleted items,
causing a segmentation fault.
So, this patch fixes it by clearing `selectionBuffer` when the list is
rebuilt, since the buffered pointers are invalidated anyway.
* Sketcher: Support Bezier and Offset curves as external geometry
* [pre-commit.ci] auto fixes from pre-commit.com hooks
for more information, see https://pre-commit.ci
* Sketcher: Fix adding projection of external arc of circle
In processEdge() it's checked if first and last point of the projected arc of circle are almost equal. If yes then a full circle
is assumed but this conclusion is not necessarily correct because it's still possible that the external arc of circle is very
short. The better criterion is to check the parameter range of the arc of circle.
See also: https://github.com/FreeCAD/FreeCAD/pull/25144#issuecomment-3502916685
---------
Co-authored-by: wwmayer <wmayer@freecad.org>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Add `SoDepthBuffer` nodes around the constraint group to disable depth
testing for constraint icons. This ensures icons render on top of
geometry lines regardless of Z position, improving visibility and
selectability.
Changes include:
1. Modernize `for` loops with range whenever possible.
2. Flip `if` statements for a "flatter" flow.
3. Use internal functions for repeated identical tasks.
The `lupdate` tool from Qt used to extract translations from files was
not in sync with what the macros defined in the code. The mismatch came
from two places:
1. The DrawSketchHandeler used non fully-qualified name for the
context whereas lupdate assumed the FQN.
2. Deriving DrawSketchHandlers did not override the translate method
context to their own class names while lupdate assumed that they do.
While it's not fully clear if what `lupdate` does here is correct
(it's a lot of assumptions) it's way easier to fix our metadata than
fight with lupdate.
When snapping to an axis, snapToObject returns false because we should also be able to snap to grid at the same time. Recent changes made the end return to be the initial unmodified position. Breaking snap to axis
