diff options
| author | Luca Rood <dev@lucarood.com> | 2017-03-23 09:52:31 +0300 |
|---|---|---|
| committer | Luca Rood <dev@lucarood.com> | 2017-03-23 09:52:46 +0300 |
| commit | 4f4a484b9b208fe5719825aa750b72e0b67937c8 (patch) | |
| tree | 5b45087b2a016ce5e3221f31b44ad1684f7e5728 /source/blender/physics/intern/implicit.h | |
| parent | 4d82d525f85af937bb59c08d584413e5419037ce (diff) | |
Cloth refactor: Remove goal springs and some other cleanup
This removes the goal springs, in favor of simply calculating the goal forces on the vertices directly. The vertices already store all the necessary data for the goal forces, thus the springs were redundant, and just defined both ends as being the same vertex.
The main advantage of removing the goal springs, is an increase in flexibility, allowing us to much more nicely do some neat dynamic stuff with the goals/pins, such as animated vertex weights. But this also has the advantage of simpler code, and a slightly reduced memory footprint.
This also removes the `f`, `dfdx` and `dfdv` fields from the `ClothSpring` struct, as that data is only used by the solver, and is re-computed on each step, and thus does not need to be stored throughout the simulation.
Reviewers: sergey
Reviewed By: sergey
Tags: #physics
Differential Revision: https://developer.blender.org/D2514
Diffstat (limited to 'source/blender/physics/intern/implicit.h')
| -rw-r--r-- | source/blender/physics/intern/implicit.h | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/source/blender/physics/intern/implicit.h b/source/blender/physics/intern/implicit.h index d1a75ca5297..2f62ab98e12 100644 --- a/source/blender/physics/intern/implicit.h +++ b/source/blender/physics/intern/implicit.h @@ -114,19 +114,15 @@ void BPH_mass_spring_force_edge_wind(struct Implicit_Data *data, int v1, int v2, void BPH_mass_spring_force_vertex_wind(struct Implicit_Data *data, int v, float radius, const float (*winvec)[3]); /* Linear spring force between two points */ bool BPH_mass_spring_force_spring_linear(struct Implicit_Data *data, int i, int j, float restlen, - float stiffness, float damping, bool no_compress, float clamp_force, - float r_f[3], float r_dfdx[3][3], float r_dfdv[3][3]); + float stiffness, float damping, bool no_compress, float clamp_force); /* Bending force, forming a triangle at the base of two structural springs */ -bool BPH_mass_spring_force_spring_bending(struct Implicit_Data *data, int i, int j, float restlen, - float kb, float cb, - float r_f[3], float r_dfdx[3][3], float r_dfdv[3][3]); +bool BPH_mass_spring_force_spring_bending(struct Implicit_Data *data, int i, int j, float restlen, float kb, float cb); /* Angular bending force based on local target vectors */ bool BPH_mass_spring_force_spring_bending_angular(struct Implicit_Data *data, int i, int j, int k, const float target[3], float stiffness, float damping); /* Global goal spring */ bool BPH_mass_spring_force_spring_goal(struct Implicit_Data *data, int i, const float goal_x[3], const float goal_v[3], - float stiffness, float damping, - float r_f[3], float r_dfdx[3][3], float r_dfdv[3][3]); + float stiffness, float damping); /* ======== Hair Volumetric Forces ======== */ |