Extensions:2.4/Py/Scripts/Object/MegaBool

• go to Catalog | Object

MegaBool

About

Megabool
Preform Boolean operations on meshes with nice results.

UI location	Group: Object
Version	r15 pre1 - 2007	Author(s)	Theodore K Schundler
Blender	2.43 & 2.45	License	n/a

Executable information

File name	megabool_r15_pre1.py

Links	http://epii.info/oss/blender/boolean/

Support

• Python & Plugins forum at Blender Artists.
• Booleans in Blender that work thread

Usage

-By Menu-

• Put this file in ~/.blender/scripts/
• Select two objects, then choose "MegaBool" from the scripts menu.

-By Running the script-

• Load this file into blender's internal text editor
• Select two objects, then press Alt+P in the test editor

OPERATIONS: On execution of the script, there are four operations:

• Intersect - Intersection of the two meshes (logical AND)
• Union - Union of the two meshes (logical OR)
• Difference - First selected mesh - Last selected mesh
• Cookie Cutter - First mesh's faces are subdivided where they intersect with the second mesh

After the script executes, all "inside" vertices are selected

Notes

Like any boolean algorithm, normals on the source meshes must be all facing outside. To fix normals, select a mesh, enter edit mode, select all verticies, and press Ctrl+N. Also, all intersections must create closed loops. (Basically the meshes should be closed.) If you find a set of meshes that do not work send me the .blend file and an explaination of the problem. Subsurf and Edge Split should be turned off before using this script. (Actually any modifiers are best disabled.)

Known Issues

n/a

Additional Information

n/a

To-Do list

• Set vertex colors & groups & weights
  
• Intersection of curves? (use splines for smooth shapes)

Credits

Thanks go to:

• Theodore K Schundler

History

 Date:        Updates:                                          

 16-Aug-2004  Initial Revision - working(?) & ready to go       

 17-Aug-2004  Fixed some bugs based on incorrect assumptions.   

               that means even more computation. Also made more 

               use of the traversalCookies to speed up a some   

               sections                                         

 24-Aug-2004  Smart filling & other stuff...                    

 26-Aug-2004  Much cleanup, nothing new / fancy                 

 18-Sep-2004  Re-did filling. (per discussion with toloban)     

               Also, 2nd object can now be a set of edge loops. 

               And other minor refinements.                     

 24-Sep-2004  Fixed a wrong assumption about vertex ordering    

 26-Sep-2004  Got rid of special filling stuff that made face   

               selection work better because with the new edit  

               modes, it isn't necissary.                       

 27-Oct-2004  Made some headway with the coplanar problem, but  

               there is still a colinear problem, and sometimes 

               an issue if a point lies in another objects plane

 01-Nov-2004  Fixed edge crossing tests in joinconcentric       

 10-Dec-2004  Rewrite of almost everything                      

 08-Apr-2005  Rewrite of alot - completely changed how inside   

               vs outside determination works                   

 24-Apr-2005  Rewrite filling (handles complicated cases faster)

               fixed dumb mistakes in intersecting edges, fixed 

               transform of vertex normals.                     

 25-Apr-2005  Fixed compatability issues with released versions 

               of Blender for Vector() constructor.             

 02-May-2005  Fixed some issues with certain angles in building 

               loops. Better detection of intersecting edges.   

               Filling avoids making faces with an area of zero.

               Debugging data doesn't display by default, so it 

               runs faster. Creates a new mesh instead of       

               writting over an old one.                        

 14-Apr-2007  Updated with fixes from Henrik Pitkala, Hoehrer,  

               and intrr. This fixes some version compatability 

               issues. It makes the order and selection the same

               as Blender's internal bools. Also, the default   

               recusion depth is increased - you can increase   

               it further by updating the max_recusion variable.

               Lastly, I added progress bar support             

 21-Apr-2007  Faces now keep material and UVs.                  

 02-Jun-2007  Rewrote intersection system again. New approach   

               splits things into tris first, avoiding nonplanar

               quad problems, and laying the ground work for    

               f/n-gon support.

---

• go to Catalog | Object