Blockbench 4.10.0

What's new in this version:

Automatic mesh fixes:
- Added automatically suggested mesh editing fixes
- Fix for concave quads
- Fix for vertices moved into other vertices

Easier selecting:
- Highlight edges and vertices when hovering over
- Improved selecting edges and vertices

Other mesh features:
- Added "Cuboid with edges" mesh primitive generator
- Added mesh solidify tool

Flipbook editor:
- This update adds the new Flipbook Editor!
- Setup flipbook-animated texture strips without manually resizing textures
- Add, copy, remove, rearrange, and resize flipbook texture frames in an easy-to-use menu
- Auto-generate the implementation code for supported Minecraft formats

Transform spaces:
- Transform spaces received an update to make them more consistent across different modes and different element types
- Renamed "Bone" space to "Parent"
- The default transform space is now "Parent"
- Added local space move support for bones in edit and animation mode
- Added local space support for the pivot tool

Image Editor:
- Added setting for image editor pixel grid size
- "Add Image" option when dropping png file into image editor
- Make "Edit" first option when opening image file with Blockbench

Animation:
- Added tool to optimize animations in one click
- Added "Change Animation Speed" option
- Blockbench now asks to copy keyframes when duplicating a bone
- Holding shift now locks bezier handler axis
- Hold control to snap bezier handles
- Bezier handles now automatically adjust when changing animation speed
- Added animation controller playback speed option
- Wrap around catmull rom keyframes in loop
- Improve animation looping preview smoothness
- Inverse Kinematics now works with null object in outliner root
- Changed timeline marker icon
- Automatically exit graph editor when opening effect animator

Minecraft features:
- Added Armadillo skin preset
- Java modded entity
- Added Fabric (yarn) modded entity option
- Added Yarn Mapping Export Template for Keyframe Animations (thanks @SirJain0)
- Added entity class name field for modded entity
- Added back child ModelPart references in 1.17 Modded Entity
- Bedrock
- Added setting to enable experimental bedrock model UV rotations
- Added support for bedrock particle events (Wintersky 1.3.0)
- OptiFine JEM
- Added per-bone textures in OptiFine Entity format

Single default texture system:
- Added a new system to handle texture assigning. This is currently used in Minecraft Bedrock blocks and OptiFine JEM.
- With this new system, textures can still be assigned to faces (or bones in OptiFine), but on faces with none assigned the default texture will be used.
- The default texture can be chosen by right-click > Set as Default. If this isn't enabled on any texture, the selected texture will be used as default.
- General modeling
- Improved resize tool handling on inverted cubes
- Adapt box UV origin when resizing on X axis
- Added option to center individual pivot points
- When grouping elements, the group now auto-adapts the name of the elements
- Added pixel grid in edit mode
- Added tool and gizmo for stretching cubes in enabled formats, thanks @AaronWoodward
- Change move and layer move tool to have different shortcuts

UV Mapping:
- Added Cycle UV and Cycle Invert UV options for mesh faces
- Implement per element selection system in UV editor (Fixes #2167)
- Added Multi Texture Occupancy option for per-face UV
- Snap UV To Pixels is now calculated in texture space

GIF Recorder:
- Added keyboard keys (Enter, Esc) to start and cancel GIF recording
- Reduced GIF color flickering by saving GIFs with higher color accuracy
- Other GIF recorder improvements
- Update GIF Recorder to allow plugins to add their own formats, thanks @ewanhowell5195!

Plugins:
- Added plugin changelog tab!
- Added plugin deprecation warning with notes to display the deprecation reason
- Added plugin "contributes" data to suggest plugins for unknown formats

Import and Export:
- OBJ Import
- Added MTL support
- Added import scale option
- FBX Export
- Added embed textures export option
- Avoid showing existing textures in texture auto import list
- Added additional warning when loading invalid bbmodel file

UI improvements:
- Added a redesigned header bar in the mobile version
- Added resizable dialogs
- Made sidebar panel height adjustable
- Improved toolbar overflow
- Action Control: list recently used actions on top
- Changed action control to no longer select option under mouse cursor when opening, to improve keyboard usability
- Added project tab context menu
- Updated "Select External Image Editor" dialog
- Changed "Update downloaded" icon
- Changed orbit gizmo axis font

Other changes:
- Added video support in reference images
- Cleaned up inconsistencies with file names
- .bbmodel file name is now always synced with project name
- The file name field is no longer editable if the file is already saved
- Include texture folder in invalid texture path error message
- Made ground plane one-sided, added setting to change it back
- The 3D brush outline is now visible on both sides of faces
- Default to selected texture in Generate Palette
- Cropping a texture to selection now adjusts the affected UV maps
- Optimized sketchfab tag suggestions, added NoAI tag suggestion
- Custom theme thumbnails can now by styled via CSS
- Increase UV visible mesh face limit
- Switch auto-backup to indexedDB to allow for larger backups in the web app
- Added option to duplicate project
- Allow ctrl based keybindings to be used while editing text inputs

Technical changes:
- Added dialog keyboard_actions system
- Added "force_step" field in dialogs to force value rounding to step
- Added class to identify menu bar menus in themes
- Added class to identify bar-select menus
- Added class option for creating menus
- URL parameters to load model through link
- Added a way to access native DOM Animation class (NativeGlobals.Animation)
- Added a CLI argument (--userData) to specify the userData directory
- Added NumSlider support in menu, opens dialog where the value can be changed.
- Added description option to showmessagebox commands API
- Improved plugin uninstall error message
- Added event hook in undo save constructor to allow custom undo aspects
- Updated Electron
- Updated to the latest version of Fontawesome

Fixed:
- reference image reload bug
- scrollbar color on recent web browsers
- #2215 Transform > Scale is rounded to 2 decimal places
- #2202 can use undo/redo while scaling model
- pasting mesh faces not applying texture
Increase orthographic camera distance to reduce issues with clicking gizmos
- #2231 Amend checkboxes are always checked initially
- #2237 Rotated cube UVs do not correctly convert to mesh
- timeline playhead line clipping
- pose in armature gltf export
- texture not updating when loading as emissive from bedrock entity
- plugins getting uninstalled on offline web app
- #1988 glTF armature export does not support multi texture
- #2201 can't export skinned glTF model with locator or null
- #2223 Bat Skin Template errors when trying to convert to a different format
- upper body rotation in wolf skin preset
- an issue with the format of relative paths in bbmodel files
- mirror modeling counting meshes with minimal X origin offset as off-center
- #1964 by auto-clearing Linux GPU cache files after updating
- #2273 disabled plugins still try to reload when reloading all
- #2272 plugin background icon can overflow
- several inconsistencies related to styling and custom themes
- selecting keyframes from validator not automatically switching to animation mode
Pasting an empty group into the outliner does not select it
- #2298 GIF resolution can be a pixel too small
- gif transparency issues when background present
- #2301 namespace auto-re-generating when opening project
- translations for selecting keyframe and animation controller particle and sound files
- #2065 Long sound keyframe can desync
- #2267 Removed faces not restored in Box UV
- #2297 Plugin settings tab not triggering onChange
- #2291 Move tool gizmo misaligned on empty group
- max reach issue of connected colors fill and magic wand select
- issues with binary FBX export. FBX exports now work in Blender, apart from animations and embedded textures. Thanks @SiboVG!
- bug in glTF exporter, thanks @Oakfather!
- issue when importing bedrock models with rotated locators
- #2051 leftover faces after merging vertices
- bedrock animation length rounding to lower value than last keyframe
- issue accessing submenus in some custom themes
- file extensions disappearing from recent project names
- bbmodel import/export not handling faces with no texture assigned correctly
- non-rounded UV factor displaying too many decimal digits in textures list
- #2279 undoing deleting a group does not properly restore timeline animator
- mesh UV drifting when using auto UV
- material icons overflow if icon is missing or invalid