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== Blender 2.62: Boolean Modifier ==

The boolean modifier now uses the [http://carve-csg.com/ Carve library], which should give much improved results. This library is more stable and faster, resolving old well-known limitations of our previous library. More [[User:Nazg-gul/CarveBooleans|implementation details are here]]. - {{Commit|43428}}

=== Changes ===

The general workflow and options available in the user interface are unchanged, usually the modifier will simply run faster and produces a better output mesh. However there also some changes in behavior. In particular, Carve will perform boolean operation only if the intersection of two meshes is a closed loop of edges.

==== Example ====

Let's take a cube and a UV sphere with some faces deleted and try to perform a boolean operation between them. Here's a purple UV sphere with 4 faces deleted. The top face of the cube intersect this sphere near its equator.

[[Image:Carve-OriginalMeshes.png|480px|center|thumb|Original meshes]]

If we subtract the sphere from the cube, and if the sphere and cube are located in the space as it's displayed on picture above, we'll see a cube with a semisphere cavity in it.

[[Image:Carve-CubeWithCavity.png|480px|center|thumb|Cube with semisphere cavity]]

As you can see, in this case the cube does not intersect with the hole in the sphere, and so we have a closed loop of edges. It works just fine. Now, lets move the sphere down to make the cube intersect the hole:

[[Image:Carve-CubeIntersectsHole.png|480px|center|thumb|Cube intersects sphere through hole]]

In this case the intersection between the cube and the sphere is not a closed circle anymore, there is a gap now, and so it's not a closed loop. The boolean modifier will fail in this case.

[[Image:Carve-CubeArtifact.png|480px|center|thumb|Cube intersects sphere through hole]]

In such cases the modifier might fail in different ways, there may be artifacts as in the image above, or the original mesh might stay unchanged.

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Yamyam: 1版 をインポートしました

2012年2月13日 (月) 14:33にwiki>Brechtによる

Yamyam: 1版をインポートしました