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Highlights

• New geometry engine: Manifold - rendering (F6) is now orders of magnitude faster
• Color support in F6 rendering, and color import/export for OFF and 3MF
• Significantly improved external file import, with built-in mesh repair

Language Features

• Hex constants using 0x prefix #4833

• Bitwise and shift operators: ~, |, &, <<, >> #4833

• New modules:

  • fill() #4348

• New functions:

  • textmetrics() #3684
  • fontmetrics() #3684
  • object() #6012

• linear_extrude()

  • Added v= and segments= parameters #3770 #5080
  • h= is an alias for height= #5572

• rotate_extrude()

  • Added start= to specify start angle #5553
  • a= is an alias for angle= #5572
  • When specifying an angle, rotation starts on angle= instead of angle=180 #5553

• import()

  • Added center= parameter
  • Added support for .json import #3891
  • Improved SVG import
    • Support $fn, $fs, $fa #3994
    • TODO: Just for SVG, how is this enforced? Added id= and layer= parameters to SVG import() #4042 #4378

• Vector swizzle feature #4010

• Ranges on the form [begin:end] with begin value greater than the end value now yields an empty range #5750

• Bugfixes

  • Relative includes could resolve to the wrong path #569
  • $ variables as module parameters were evaluated wrongly #1968
  • dxf_dim() and dxf_cross() sometimes didn't locate file correctly #2768
  • positional parameter silently overrides previous named parameter #3672
  • Passing children to modules that don't accept them now issues a warning #3759
  • modifiers not working properly with children() #1529
  • Can't pass special vars to children #2104
  • Allow trailing comma in let() or lists #2882

Program Features

• General

  • Hardwarnings are better behaved with fewer false positives #3660 #3743
  • Better behavior for deep recursions #3671 #3730

• Geometry

  • 2D precision issues #3794
  • Round up number of fragments in rotate_extrude #4540

• Misc

  • Added WASM build #4128
  • Memory leaks #3174 addressed by adding garbage collection #3765
  • macOS binaries are now signed and notarized #5420

• File I/O

  • Add support for defs/use in svg files. #3848
  • Export customizer .param file. #3864
  • dxf export as polylines #3869
  • Better support for Relative Paths in CSG output #128
  • SVG import: Respect "display: none" #4041
  • SVG scaling wrong with width/height given as percentage #4096
  • VRML export #3883
  • OBJ import and export #4197
  • PovRay export, with color support #5288

• GUI

  • Double-click to center now works better #3661
  • Edit call-tips fixes #3744
  • Editor improvements #3749
  • Auto-complete improvements #3901
  • Turkish translation #3992
  • Add option to configure 2D/3D toolbar actions. #4007
  • upgrade syntax coloring #4026
  • Add action to open folder of the current tab. #4038
  • adding support for gradient backgrounds #4167
  • improved animation UI #4237 #4245
  • Added viewport control widget #4243
  • Axis rendering improved #3875 #5247
  • File->Save a Copy #4392
  • Georgian translation #4519
  • PDF export dialog #4537
  • 3MF export dialog #5577
  • Rendering performance improvement through use of VBOs
  • Adding interactive measurement abilities to OpenSCAD #4813
  • Qt6 now supported
  • Can send rendered geometry to a local slicer instance #5299
  • Add support for multiple 3D print services #5357
  • Cleaned up Window menu and added Ctrl-J Jump To #5630
  • Customizer
    • Major rework #3755
    • Better behavior when multiple tabs open
    • Removed support for editing large vectors (usability issue)
    • Negative numbers now behave correctly #3773
    • Sliders work better #3778
  • Preferences
    • Console font configurable #3623
    • Make customizer font and size selectable. #4946
    • add auto clear console option to preferences #4228
    • Add Option to Swap Mouse Buttons on 3DView #4241

• Cmd-line

  • --enable-all #3874
  • --summary all|camera|cache|time|geometry|bounding-box #3877
  • --summary-file filename|-
  • Linux: Can render files to PNG without X11/GLX
  • Rename --render=cgal to --render=force to force-convert to the current backend-specific geometry #4822
  • Set $vpr, $vpt, $vpd, $vpf when run from command line. #4863
  • Add --backend setting / flag to enable manifold in prod builds #5235
  • --animate_sharding=<shard>/<num_shards> #5473
  • Add -O export option parameter #5577

Deprecations:

• AMF import/export is deprecated
• Removed support for OpenGL < 2.1
• Removed support for dxf_linear_extrude(), dxf_rotate_extrude(), import_dxf(), import_stl() and import_off()
• Removed deprecated -s and -x cmd-line options #5733
• Variable names starting with a digit is deprecated (but still allowed for the time being, except when conflicting with hex constants) #4833
• Removed deprecated child() and assign() modules.

Misc:

Stats:

• ~800 pull requests merged