forked from bartvdbraak/blender
b6b2f37f27
This operator (Ctrl-F) allows you to flip the lattice coordinates without inverting the normals of meshes deformed by the lattice (or the lattice's deformation space for that matter). Unlike the traditional mirror tool, this tool is aware of the fact that the vertex order for lattice control points matters, and that simply mirroring the coordinates will only cause the lattice to have an inverted deform along a particular axis (i.e. it will be scaling by a negative scaling factor along that axis). The problems (as I discovered the other day) with having such an inverted deformation space are that: - the normals of meshes/objects inside that will be incorrect/flipped (and will disappear in GLSL shading mode for instance) - transforming objects deformed by the lattices will become really tricky and counter-intuitive (e.g. rotate in opposite direction by asymmetric amounts to get desired result) - it is not always immediately obvious that problems have occurred Specific use cases this operator is meant to solve: 1) You've created a lattice-based deformer for one cartoonish eye. Now you want to make the second eye, but want to save some time crafting that basic shape again but mirrored. 2) You've got an even more finely crafted setup for stretchy-rigs, and now need to apply it to other parts of the rig. Notes: * I've implemented a separate operator for this vs extending/patching mirror transform tool as it's easier to implement this way, but also because there are still some cases where the old mirroring seems valid (i.e. you explicitly want these sort of distortion effects). * Currently this doesn't take selections into account, as it doesn't seem useful to do so. |
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