Knife angle measurements were mis-aligned if a cut point was in space.
Specifically, the arc drawing would not match with the cut line.
Fixed by removing a correction for kcd->prev.cage.
This correction was originally added for panning with measurements to work.
In hindsight it is not needed and only introduces issues like this.
This adds constrained angle mode improvements,
snapping to global and local orientation,
visible distance and angle measurements,
undo capability,
x-ray mode,
multi-object edit mode.
See https://developer.blender.org/D12600 for more details.
Note: this project moved some of the default keymappings
around a bit, as discussed with users in the thread
https://devtalk.blender.org/t/gsoc-2021-knife-tool-improvements-feedback/19047
We'll change the manual documentation in the next couple of days.
Rename function EDBM_update_generic to EDBM_update, use a parameters
argument for better readability.
Also add calc_normals argument, which will have benefits when
calculating normals and tessellation together is optimized.
Note that these changes are limited simple cases as these kinds of
changes could allow for errors when refactoring code when the known
state is not so obvious.
When projecting into screen space Z value isn't always needed.
Add 2D projection functions, renaming them to avoid accidents
happening again.
- Add GPU_matrix_project_2fv
- Add ED_view3d_project_v2
- Rename ED_view3d_project to ED_view3d_project_v3
- Use the 2D versions of these functions when the Z value isn't used.
Minor changes preparing for snap gizmo inclusion.
- Extract `knife_snap_edge_in_angle` into a utility function.
- Check the snap vertex on closest edge instead of the face.
- Add MODE_INVOKING state.
- Remove unnecessary NULL checks.
- Control 'ignore_edge_snapping' while dragging instead of checking
dragging in `knife_snap_update_from_mval`.
Ref D8220
In this case, the cage location was left zeroed which was then
projected back onto the screen to find the nearest screen space
edge/vertex.
This made snapping to the vertex/edge fail in some corner-cases
where it was intended to work.
Reduce the maximum number of queries to find the face under the
mouse cursor from 6x to 2x on cursor motion.
Calculating the screen-space detail could perform 2x look-ups
which have already been calculated.
Knife snapping logic assumed having a face under the cursor meant
the projected positions were set.
This is not always the case as failure to ray-cast uses the back-buffer
as a fallback.
- comment added in struct `KnifeTool_OpData`
- struct pointer name `lst` updated to `list` ( Guess its more readable )
- `KNF_MODEL_IGNORE_SNAP_ON` updated to `KNF_MODAL_IGNORE_SNAP_ON`
- `KNF_MODEL_IGNORE_SNAP_OFF` updated to `KNF_MODAL_IGNORE_SNAP_OFF`
Ref D10824
Although the Knife Project operator converts 3D coordinates to screen
space, it doesn't really need opengl.
Differential Revision: https://developer.blender.org/D10178
Corrects incorrect usages of the word 'loose' when 'lose' was required.
Differential Revision: https://developer.blender.org/D9243
Reviewed by Campbell Barton
