diff options
Diffstat (limited to 'source/blender/blenkernel/intern/constraint.c')
-rw-r--r-- | source/blender/blenkernel/intern/constraint.c | 60 |
1 files changed, 33 insertions, 27 deletions
diff --git a/source/blender/blenkernel/intern/constraint.c b/source/blender/blenkernel/intern/constraint.c index d44e0b7ea0b..e847e0961ef 100644 --- a/source/blender/blenkernel/intern/constraint.c +++ b/source/blender/blenkernel/intern/constraint.c @@ -1,6 +1,4 @@ /* - * $Id$ - * * ***** BEGIN GPL LICENSE BLOCK ***** * * This program is free software; you can redistribute it and/or @@ -2641,7 +2639,7 @@ static void distlimit_evaluate (bConstraint *con, bConstraintOb *cob, ListBase * /* if inside, then move to surface */ if (dist <= data->dist) { clamp_surf= 1; - sfac= data->dist / dist; + if (dist != 0.0f) sfac= data->dist / dist; } /* if soft-distance is enabled, start fading once owner is dist+softdist from the target */ else if (data->flag & LIMITDIST_USESOFT) { @@ -2654,14 +2652,14 @@ static void distlimit_evaluate (bConstraint *con, bConstraintOb *cob, ListBase * /* if outside, then move to surface */ if (dist >= data->dist) { clamp_surf= 1; - sfac= data->dist / dist; + if (dist != 0.0f) sfac= data->dist / dist; } /* if soft-distance is enabled, start fading once owner is dist-soft from the target */ else if (data->flag & LIMITDIST_USESOFT) { // FIXME: there's a problem with "jumping" when this kicks in if (dist >= (data->dist - data->soft)) { sfac = (float)( data->soft*(1.0f - expf(-(dist - data->dist)/data->soft)) + data->dist ); - sfac /= dist; + if (dist != 0.0f) sfac /= dist; clamp_surf= 1; } @@ -2670,7 +2668,7 @@ static void distlimit_evaluate (bConstraint *con, bConstraintOb *cob, ListBase * else { if (IS_EQF(dist, data->dist)==0) { clamp_surf= 1; - sfac= data->dist / dist; + if (dist != 0.0f) sfac= data->dist / dist; } } @@ -4420,6 +4418,34 @@ void get_constraint_target_matrix (struct Scene *scene, bConstraint *con, int n, unit_m4(mat); } } + +/* Get the list of targets required for solving a constraint */ +void get_constraint_targets_for_solving (bConstraint *con, bConstraintOb *cob, ListBase *targets, float ctime) +{ + bConstraintTypeInfo *cti= constraint_get_typeinfo(con); + + if (cti && cti->get_constraint_targets) { + bConstraintTarget *ct; + + /* get targets + * - constraints should use ct->matrix, not directly accessing values + * - ct->matrix members have not yet been calculated here! + */ + cti->get_constraint_targets(con, targets); + + /* set matrices + * - calculate if possible, otherwise just initialise as identity matrix + */ + if (cti->get_target_matrix) { + for (ct= targets->first; ct; ct= ct->next) + cti->get_target_matrix(con, cob, ct, ctime); + } + else { + for (ct= targets->first; ct; ct= ct->next) + unit_m4(ct->matrix); + } + } +} /* ---------- Evaluation ----------- */ @@ -4464,27 +4490,7 @@ void solve_constraints (ListBase *conlist, bConstraintOb *cob, float ctime) constraint_mat_convertspace(cob->ob, cob->pchan, cob->matrix, CONSTRAINT_SPACE_WORLD, con->ownspace); /* prepare targets for constraint solving */ - if (cti->get_constraint_targets) { - bConstraintTarget *ct; - - /* get targets - * - constraints should use ct->matrix, not directly accessing values - * - ct->matrix members have not yet been calculated here! - */ - cti->get_constraint_targets(con, &targets); - - /* set matrices - * - calculate if possible, otherwise just initialise as identity matrix - */ - if (cti->get_target_matrix) { - for (ct= targets.first; ct; ct= ct->next) - cti->get_target_matrix(con, cob, ct, ctime); - } - else { - for (ct= targets.first; ct; ct= ct->next) - unit_m4(ct->matrix); - } - } + get_constraint_targets_for_solving(con, cob, &targets, ctime); /* Solve the constraint and put result in cob->matrix */ cti->evaluate_constraint(con, cob, &targets); |