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Git Commits -> Revision 48a86af
Revision 48a86af by Lukas Toenne (alembic, gooseberry, gooseberry_farm, hair_guides, hair_guides_grooming, hair_object, strand_editmode, strand_gpu, strand_nodes, temp_motionpaths, tmp_hair_curves) April 20, 2015, 10:24 (GMT) |
IK solver for hair strands that provides a better solution for keeping consistent segment lengths when transforming vertices. Warning: The implementation is not correct yet, but all the steps should be there. The main idea is to treat strands as a sequence of joints that are displaced out of their original locations by a transform or other tool. The solver then tries to find a global per-strand solution that keeps the segment lengths unmodified, with a minimum change in angles from the original starting shape. Such a solution is much more usable and efficient than the current O(n^2) attempt of "spreading the error" across the strand. The inverse kinematics method is very flexible. It can also include stretching, which would be very welcome for features like the length tool. Different parts of the strand could be weighted separately using scaling factors for the angle/stretch parameters. Conflicts: source/blender/physics/intern/implicit.h |
Commit Details:
Full Hash: 48a86af3887c3d93e1a8cf34033e86b23d1edd12
Parent Commit: eacc24c
Lines Changed: +562, -123
2 Added Paths:
/source/blender/physics/BPH_strands.h (+44, -0) (View)
/source/blender/physics/intern/strands.cpp (+425, -0) (View)
/source/blender/physics/intern/strands.cpp (+425, -0) (View)
11 Modified Paths:
/source/blender/blenkernel/BKE_editstrands.h (+9, -1) (Diff)
/source/blender/blenkernel/intern/editstrands.c (+21, -107) (Diff)
/source/blender/bmesh/bmesh_class.h (+8, -0) (Diff)
/source/blender/bmesh/intern/bmesh_strands.h (+12, -4) (Diff)
/source/blender/editors/hair/hair_edit.c (+1, -1) (Diff)
/source/blender/editors/transform/transform_conversions.c (+6, -2) (Diff)
/source/blender/physics/CMakeLists.txt (+3, -0) (Diff)
/source/blender/physics/intern/eigen_utils.h (+31, -1) (Diff)
/source/blender/physics/intern/implicit.h (+0, -5) (Diff)
/source/blender/physics/intern/implicit_blender.c (+1, -1) (Diff)
/source/blender/physics/intern/implicit_eigen.cpp (+1, -1) (Diff)
/source/blender/blenkernel/intern/editstrands.c (+21, -107) (Diff)
/source/blender/bmesh/bmesh_class.h (+8, -0) (Diff)
/source/blender/bmesh/intern/bmesh_strands.h (+12, -4) (Diff)
/source/blender/editors/hair/hair_edit.c (+1, -1) (Diff)
/source/blender/editors/transform/transform_conversions.c (+6, -2) (Diff)
/source/blender/physics/CMakeLists.txt (+3, -0) (Diff)
/source/blender/physics/intern/eigen_utils.h (+31, -1) (Diff)
/source/blender/physics/intern/implicit.h (+0, -5) (Diff)
/source/blender/physics/intern/implicit_blender.c (+1, -1) (Diff)
/source/blender/physics/intern/implicit_eigen.cpp (+1, -1) (Diff)
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