forked from bartvdbraak/blender
c648e790be
When Modifiers are used in Edit Mode to show the deformed result for editing, all actual coordinates Blender works with are still the ones from the original Cage. You can notice that with the Transform Widget or helper lines while transforming. Even worse, the actual transformations still happened on the original Cage as well, making it very hard to edit. That caused the feature to be named "CrazySpace" (baptized by Andy, afaik?). This commit calculates the deformation transformation per vertex, and inverse corrects it, so it's more intuitive editing this way. Unfortunately all the deformation features of Blender don't use matrices for defining deform, so the existing code cannot be re-used to retrieve the correct deformation matrix per vertex. The solution I found is based on calculating per face the transformation based on its first 3 vertices, and store this transformation averaged in the face's vertices. The solution can also only work on entire faces, because the full deform can only be retrieved using 3 vertices. (using 2 vertices will miss edge- aligned rotation, using 1 vertex can only retrieve translation). By deriving the deformations per face, small errors will still happen, especially on very low-poly Meshes with extreme deformations. The only alternative I know now, is providing each vertex in a mesh with 2 extreme small tangent vectors, which get deformed using the existing code as well. That will mess up the existing deformation code too much though, this solution has the benefit it works with each deform we can up with later too. Last note about CrazySpace: it can only be used to tweak Meshes. Do not even try to add vertices, extrude, or duplicate. Probably we should disable this... but preventing user errors isn't always power-user-friendly, eh. :) |
||
|---|---|---|
| .. | ||
| blender | ||
| creator | ||
| darwin | ||
| gameengine | ||
| icons | ||
| kernel | ||
| Makefile | ||
| nan_compile.mk | ||
| nan_definitions.mk | ||
| nan_link.mk | ||
| nan_subdirs.mk | ||
| nan_warn.mk | ||
| SConscript | ||