87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later
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* Copyright Blender Foundation */
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#pragma once
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/** \file
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* \ingroup bke
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*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct Depsgraph;
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struct Object;
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struct Scene;
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struct SoftBody;
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typedef struct BodyPoint {
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float origS[3], origE[3], origT[3], pos[3], vec[3], force[3];
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float goal;
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float prevpos[3], prevvec[3], prevdx[3], prevdv[3]; /* used for Heun integration */
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float impdv[3], impdx[3];
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int nofsprings;
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int *springs;
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float choke, choke2, frozen;
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float colball;
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short loc_flag; /* reserved by locale module specific states */
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// char octantflag;
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float mass;
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float springweight;
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} BodyPoint;
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/**
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* Allocates and initializes general main data.
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*/
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extern struct SoftBody *sbNew(void);
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/**
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* Frees internal data and soft-body itself.
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*/
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extern void sbFree(struct Object *ob);
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/**
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* Frees simulation data to reset simulation.
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*/
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extern void sbFreeSimulation(struct SoftBody *sb);
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/**
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* Do one simulation step, reading and writing vertex locs from given array.
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* */
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extern void sbObjectStep(struct Depsgraph *depsgraph,
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struct Scene *scene,
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struct Object *ob,
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float cfra,
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float (*vertexCos)[3],
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int numVerts);
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/**
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* Makes totally fresh start situation, resets time.
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*/
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extern void sbObjectToSoftbody(struct Object *ob);
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/**
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* Soft-body global visible functions.
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* Links the soft-body module to a 'test for Interrupt' function, pass NULL to clear the callback.
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*/
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extern void sbSetInterruptCallBack(int (*f)(void));
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/**
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* A precise position vector denoting the motion of the center of mass give a rotation/scale matrix
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* using averaging method, that's why estimate and not calculate see: this is kind of reverse
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* engineering: having to states of a point cloud and recover what happened our advantage here we
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* know the identity of the vertex there are others methods giving other results.
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*
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* \param ob: Any object that can do soft-body e.g. mesh, lattice, curve.
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* \param lloc: Output of the calculated location (or NULL).
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* \param lrot: Output of the calculated rotation (or NULL).
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* \param lscale: Output for the calculated scale (or NULL).
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*
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* For velocity & 2nd order stuff see: #vcloud_estimate_transform_v3.
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*/
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extern void SB_estimate_transform(Object *ob, float lloc[3], float lrot[3][3], float lscale[3][3]);
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#ifdef __cplusplus
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}
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#endif
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