This is AC3D 4.0f.

CHANGES SINCE 4.0
- fixed problem with Surface->triangulate always failing under Linux
- improved DXF importer
- font file now included (needed for dxf text)
 

CHANGES SINCE 3.6

- added subdivision surface modeling
- added manipulations are now animated - feedback switch on bottom bar switches this behaviour
- many optimisations to make editing/loading/saving of large models much faster
- added redo mechanism
- added space key now toggles between small view and maximised view
- new File->settings dialog with many more settings available
- added antialias toggle (bottom bar) switches 3D window into AntiAlias mode for smoother pictures
- added printing (under Windows)
- added view->real time mirroring
- added object->mirror function
- added option to select wires in wireframe mode (advanced settings)
- added crease-angle to ac3d objects - edit from object properties
- added extrude to replicator
- added combine surfaces
- added object library
- added - surface->calc-surface-area
- added 2D/3D text generator
- added plugins - including t3d, boolean and dds texture support
- improved surface->bevel and added Surface->indent
- improved zoom speed
- added Quake md2 export



ADDITIONS SINCE 3.5

- Faster rendering.
- Integrated graphical Texture Coordinate Editor (accessed from Tools menu).
- Delaunay triangulation for creating meshes from selected vertices (menu Vertex->create 2D mesh)
- Selection (control-key + mouse) in 3D window now has rubber-band box.
- Negate select added to 3d window (control + shift + mouse button 2 or 3).
- 3D window background col can be changed from File->Settings.
- 'Copy 3D image to Windows clipboard' - added to Edit menu.
- 3DS file export now includes texture information.
- 3DS files are automaticaly converted from/to 3DS coordinate system.
- 3DS exports - object names are made unique.
- added Vertex->Snap together by distance.
- added Vertex->Unshare.
- Many other small changes and bug fixes - see the version history on the AC3D website for more details.


IMPORTANT CHANGES - EXISTING USERS PLEASE READ

If you have previously used an older version of AC3D, some of the preferences in your settings file may have changed or been deleted.  This means that you may get some warnings in the console when you start this version.  This is nothing to worry about and the settings file will be overwritten when AC3D exits. 

The File menu has been reorganised and includes a recent files list.  There are also now seperate Open and Merge menu items.  'Open' clears the model before loading another, 'Merge' allows inclusion into the current model.  Note that 'Import' and 'Export' still effectively 'Merge' with the current model.

The Group and Ungroup buttons are now in the toolbar and in the edit menu.

The Zoom in/out buttons '<' and '>' have been removed from the toolbar.

The 'V' checkbutton has been removed from the bottom bar.

A click select (in 3d or orth windows) will select the NEAREST surface/vertex/object.  A drag-select selects all underneath the drag rect.


Open File->Object-Library to load some sample model files.

If you experience any problems or have any requests for changes or additions to AC3D then please email the authors.

