Blender Git Loki

Sculpt-dev: SCULPT_reproject_cdata fixes

* SCULPT_reproject_cdata now forcibly re-snaps
for non-boundary loops.
* Also fixed a wrong radial loop iterator.

Fix (unreported) wrong behavior of constraints in liboverrides.

All constraints were 'made local', including the ones comming from the
reference linked object.

LibOverride: Add read-only flags accessors for 'local override' status.

Constraints, modifiers and NLA tracks can now report from RNA whether
they are defined as comming from the override's reference linked data,
or are local to the override.

Merge branch 'blender-v3.0-release'

Fix T93054: crash when deleting a missed linked file

This is a bit similar to rBb7260ca4c9f4b7618c9c214f1270e31d6ed9886b.
Sometimes a group node may not reference a node group
because it was linked and can't be found.

Merge branch 'blender-v3.0-release'

Fix crash in VSE versioning code from recent commit

Caused by {rB4d09a692e22a}.
Greenlit by @sergey in chat.

WIP adding tiles between chunks and images.

Nodes: add bf_nodes_geometry library

Separating geometry nodes into a new library will make it
easier to improve compile times with features like unity
builds and precompiled headers.

Differential Revision: https://developer.blender.org/D13261

Merge branch 'master' into temp-gpu-texture-partial-updates

Merge branch 'blender-v3.0-release'

Fix T92847: Meta-strip corrupt

Offsets for meta strip were invalid. No steps to reproduce the issue are
available, but it is quite possible that there are files with incorrect
state after issues with meta strips were fixed.

Ensure correct offsets for meta strips in versioning code.

Reviewed By: sergey

Differential Revision: https://developer.blender.org/D13257

Cleanup: Add an empty() method to RNA's CollectionRef class

The existing RNA CollectionRef class only offers a length() operation
which is sometimes used for checking if the collection is empty. This is
inefficient for certain collection types which do not have a native
length member; the entire list is iterated to find the count.

This patch creates an explicit empty() method to be used in such cases
for better semantics. Additionally, many collection types will behave
more efficiently when using the new method instead of checking length.

Making use of the new method will follow separately.

Differential Revision: https://developer.blender.org/D12314

Merge branch 'arcpatch-D2624'

Conflicts:
source/blender/editors/transform/transform_input.c
source/blender/editors/transform/transform_ops.c
source/blender/windowmanager/intern/wm_operator_utils.c

Allow navigating while transforming

This feature has been desired for some time:
- https://rightclickselect.com/p/ui/Tqbbbc/allow-navigating-while-transforming (See comments);
- D1583;
- T37427;

In short, blocking navigation during transform limits the user to move the object only to visible areas within the screen and hinders the allocation of objects within closed meshes.

The node editor is also impaired because some nodes are far between them and the connectors are too small.

The only disadvantage of this patch (as I see it) is the conflict with the existing key map:
MIDDLEMOUSE:
- enable axis constrain in 3D view;

WHEELDOWNMOUSE, WHEELUPMOUSE, PAGEUPKEY, PAGEDOWNKEY:
- change the threshold of the proportional edit;

So the patch solution was to change these keymaps:
- MIDDLEMOUSE to Alt+MIDDLEMOUSE;
- WHEELDOWNMOUSE, WHEELUPMOUSE, PAGEUPKEY, PAGEDOWNKEY to Alt+(corresponding key);

When you use this new keymap for the first time in the proportional edit, it may seem strange due to the custom of using it (both in View2D and View3D).
But quickly the user gets used to it.

Alternatively we can add an option to the user preferences ([] Allow navigating while transforming). (I'm not much fan of this option).

The patch was done on branch2.8. But maybe it's a good idea to apply it to 2.79

Differential Revision: https://developer.blender.org/D2624

Node Editor: Change minimum zoom

Now with Geometry Nodes in Blender,
trees can become much bigger than before.
This changes the minimum zoom value in the node editor.

Differential Revision: https://developer.blender.org/D13254

Node Editor: Skip socket drawing on low zoom

Socket drawing can be heavy with many nodes.
This patch skips drawing them on scale < 0.2
when they are barely visible anyway.

Differential Revision: https://developer.blender.org/D13255

Allow navigating while transforming

This feature has been desired for some time:
- https://rightclickselect.com/p/ui/Tqbbbc/allow-navigating-while-transforming (See comments);
- D1583;
- T37427;
- D2624;

Transform: interactive mode for setting a 'Snap Source'

This patch implements part of what was stated in {T66484}, with respect to `Base Point`.

## Introduction

The snapping feature of the transform tools has a variety of applications:
- Organization of nodes.
- Positioning of frames in precise time units.
- Retopology with snap to face
- Creation of armatures with bone positioning through the snap to volume
- Precise positioning of 3D or 2D objects in the surrounding geometry (CAD modeling)

The goal of this document is to make it more powerful for precision modeling and still supporting the old use cases without extra complexity.
The main topic addressed here is the introduction of a **interactive mode for setting a snap source** (See terminology).

## Terminology

* **Snap Source**: 3d coordinate * we want to snap from. (Currently defined by the `Snap With` options: `Closest`, `Center`, `Median` and `Active`).
* **Snap Target**: 3d coordinate* we want to snap to. (Vertices, Edges, Faces, Grid...)

## Interactive Mode for Editing a Snap Source

Currently the fixed snap point can only be obtained through the `Snap With` options. So it's a little tricky for the user to define a snap source point having so much geometry on an object.
Because of this, the user needs to resort to impractical solutions to get a point in the geometry.
See example of an impractical use:
{F11714181, layout=left, width=960, alt="The user used the cursor (which can be snapped) to choose the snap origin point."}
The user used the cursor (which can be snapped) to choose the snap source point.

While it is possible to work around this current limitation, it is important to reduce the number of steps and allow the user to set a snap source point through an optional interactive mode during a transformation.

The proposed solution is to be able to move the current snap source point through a modal modifier activated with a key (eg. B).
The snap source point can thus "snap" to the elements in the scene (vertex, mid-edge, Lamp, ?) during this mode.
{F9122814, layout=left, width=960, alt="Base Point Snap, example of transform operation via the shortcut (not the tool). After pressing g and the snap base change shortcut (e.g., shift + ctrl) the user set the base point. The base point is then visible until the end of the operation. The z axis constrains the final position."}

## Implementation Details

- The feature will only be available in 3D View.
- The feature will only be available for `Move`, `Rotate` and `Scale` transform modes.
- The snap source editing will be enabled with a single click on the modifier key (B).
- Having a snap point indicated, the new snap origin point will be confirmed with the same buttons that confirms the transformation (but the transformation will not be concluded).
- The snap source editing can be canceled with the same key that activated it (B).
- If the transformation is done with "release_confirm" (common for gizmos), the new feature cannot be enabled.
- During the transformation, when enabling the feature, if the snap option is turned off in the scene, the snap will be forced on throughout the rest of the transformation (unless interactive mode is canceled).
- During a transformation, if no snap target is set for an element in the scene (Vertex, Grid...), the snap targets to geometry Vertex, Edge, Face, Center of Edge and Perpendicular of Edge will be set automatically.
- Snap cannot be turned off during the snap source editing.
- Constraint or similar modification features will not be available during the snap source editing.
- Text input will not be available during the snap source editing.
- When adding multiple snap points (A) the new prone snap source point will be indicated with an "X" drawing.
{F11817267}

Maniphest Tasks: T66484

Differential Revision: https://developer.blender.org/D9415

Merge branch 'blender-v3.0-release'