Commit: a8510408b958d8c12a1c6ddf08940448813ef65f
Author: Martin Felke
Date: Sun Jun 18 19:25:57 2017 +0200
Branches: fracture_modifier
https://developer.blender.org/rBa8510408b958d8c12a1c6ddf08940448813ef65f
added deform weakening factor
the threshold is multiplied with 1.0-fac per deform iteration, so it can
automatically break at some point.
===================================================================
M intern/rigidbody/RBI_api.h
M intern/rigidbody/rb_bullet_api.cpp
M release/scripts/startup/bl_operators/presets.py
M release/scripts/startup/bl_ui/properties_physics_fracture.py
M source/blender/blenkernel/intern/rigidbody.c
M source/blender/makesdna/DNA_modifier_types.h
M source/blender/makesrna/intern/rna_fracture.c
M source/blender/modifiers/intern/MOD_fracture.c
===================================================================
diff --git a/intern/rigidbody/RBI_api.h b/intern/rigidbody/RBI_api.h
index 765397f0a54..02447f8d1b8 100644
--- a/intern/rigidbody/RBI_api.h
+++ b/intern/rigidbody/RBI_api.h
@@ -346,6 +346,7 @@ void RB_constraint_set_solver_iterations(rbConstraint *con,
int num_solver_itera
/* Set breaking impulse threshold, if constraint shouldn't break it can be set
to FLT_MAX */
void RB_constraint_set_breaking_threshold(rbConstraint *con, float threshold);
+float RB_constraint_get_breaking_threshold(rbConstraint *con);
void RB_constraint_set_id(rbConstraint *con, char id[64]);
diff --git a/intern/rigidbody/rb_bullet_api.cpp
b/intern/rigidbody/rb_bullet_api.cpp
index ac81a362f08..337fc97ba8b 100644
--- a/intern/rigidbody/rb_bullet_api.cpp
+++ b/intern/rigidbody/rb_bullet_api.cpp
@@ -2058,4 +2058,11 @@ void RB_constraint_set_id(rbConstraint *con, char id[64])
strncpy(con->id, id, len);
}
+float RB_constraint_get_breaking_threshold(rbConstraint *con)
+{
+ btTypedConstraint *constraint =
reinterpret_cast<btTypedConstraint*>(con->con);
+
+ return constraint->getBreakingImpulseThreshold();
+}
+
/* ********************************** */
diff --git a/release/scripts/startup/bl_operators/presets.py
b/release/scripts/startup/bl_operators/presets.py
index d917eaabcf1..fb9fe0e8b7d 100644
--- a/release/scripts/startup/bl_operators/presets.py
+++ b/release/scripts/startup/bl_operators/presets.py
@@ -697,7 +697,8 @@ class AddPresetFracture(AddPresetBase, Operator):
"fracture.cluster_deform_distance",
"fracture.deform_angle",
"fracture.deform_angle_weighted",
- "fracture.cluster_deform_angle"
+ "fracture.cluster_deform_angle",
+ "fracture.deform_weakening"
]
preset_subdir = "fracture"
diff --git a/release/scripts/startup/bl_ui/properties_physics_fracture.py
b/release/scripts/startup/bl_ui/properties_physics_fracture.py
index ea155a7eefc..1fd6b1021e3 100644
--- a/release/scripts/startup/bl_ui/properties_physics_fracture.py
+++ b/release/scripts/startup/bl_ui/properties_physics_fracture.py
@@ -257,6 +257,8 @@ class PHYSICS_PT_fracture_simulation(PhysicButtonsPanel,
Panel):
row.prop(md, "deform_angle_weighted")
row.prop(md, "deform_distance_weighted")
+ col.prop(md, "deform_weakening")
+
diff --git a/source/blender/blenkernel/intern/rigidbody.c
b/source/blender/blenkernel/intern/rigidbody.c
index ac90857ccdf..16af2aca95f 100644
--- a/source/blender/blenkernel/intern/rigidbody.c
+++ b/source/blender/blenkernel/intern/rigidbody.c
@@ -3750,6 +3750,9 @@ static void deactivateRigidbody(RigidBodyOb *rbo)
static void deform_constraint(FractureModifierData *fmd, Object *ob,
RigidBodyShardCon* rbsc, RigidBodyWorld *rbw)
{
+ float thresh;
+ float weakening = 1.0f - fmd->deform_weakening;
+
RB_dworld_remove_constraint(rbw->physics_world,
rbsc->physics_constraint);
BKE_rigidbody_start_dist_angle(rbsc, true);
@@ -3757,6 +3760,9 @@ static void deform_constraint(FractureModifierData *fmd,
Object *ob, RigidBodySh
BKE_rigidbody_validate_sim_shard_constraint(rbw, fmd, ob, rbsc, true);
//set_constraint_index(fmd, rbsc);
+ thresh = RB_constraint_get_breaking_threshold(rbsc->physics_constraint);
+ RB_constraint_set_breaking_threshold(rbsc->physics_constraint, thresh *
weakening);
+
deactivateRigidbody(rbsc->mi1->rigidbody);
deactivateRigidbody(rbsc->mi2->rigidbody);
}
diff --git a/source/blender/makesdna/DNA_modifier_types.h
b/source/blender/makesdna/DNA_modifier_types.h
index 2e61d5fa6f9..16bb460a44a 100644
--- a/source/blender/makesdna/DNA_modifier_types.h
+++ b/source/blender/makesdna/DNA_modifier_types.h
@@ -1738,6 +1738,7 @@ typedef struct FractureModifierData {
float deform_distance;
float cluster_deform_angle;
float cluster_deform_distance;
+ float deform_weakening;
float impulse_dampening;
float minimum_impulse;
@@ -1801,7 +1802,7 @@ typedef struct FractureModifierData {
short mat_ofs_intersect;
short mat_ofs_difference;
- //char pad[4];
+ char pad[4];
} FractureModifierData;
typedef struct DataTransferModifierData {
diff --git a/source/blender/makesrna/intern/rna_fracture.c
b/source/blender/makesrna/intern/rna_fracture.c
index 0505c05861e..80ea94bada3 100644
--- a/source/blender/makesrna/intern/rna_fracture.c
+++ b/source/blender/makesrna/intern/rna_fracture.c
@@ -318,6 +318,13 @@ static void
rna_FractureModifier_cluster_threshold_set(PointerRNA *ptr, float va
rmd->refresh_constraints = true;
}
+static void rna_FractureModifier_deform_weakening_set(PointerRNA *ptr, float
value)
+{
+ FractureModifierData *rmd = (FractureModifierData*)ptr->data;
+ rmd->deform_weakening = value;
+ rmd->refresh_constraints = true;
+}
+
static void rna_FractureModifier_solver_iterations_override_set(PointerRNA
*ptr, float value)
{
FractureModifierData *rmd = (FractureModifierData*)ptr->data;
@@ -1344,5 +1351,15 @@ void RNA_def_fracture(BlenderRNA *brna)
RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
RNA_def_property_update(prop, 0, "rna_Modifier_update");
+ prop = RNA_def_property(srna, "deform_weakening", PROP_FLOAT,
PROP_NONE);
+ RNA_def_property_float_sdna(prop, NULL, "deform_weakening");
+ RNA_def_property_range(prop, 0.0f, 1.0f);
+ RNA_def_property_float_funcs(prop, NULL,
"rna_FractureModifier_deform_weakening_set", NULL);
+ RNA_def_property_ui_text(prop, "Deform Weakening Factor",
+ "Multiplies the breaking threshold in each
iteration with 1.0 - factor in order to weaken it at deform, 0 to disable");
+ RNA_def_property_ui_range(prop, 0.0f, 1.0f, 0.0001f, 6);
+ RNA_def_property_clear_flag(prop, PROP_ANIMATABLE);
+ RNA_def_property_update(prop, 0, "rna_Modifier_update");
+
RNA_api_fracture(brna, srna);
}
diff --git a/source/blender/modifiers/intern/MOD_fracture.c
b/source/blender/modifiers/intern/MOD_fracture.c
index 7823822b828..c65885d1867 100644
--- a/source/blender/modifiers/intern/MOD_fracture.c
+++ b/source/blender/modifiers/intern/MOD_fracture.c
@@ -263,6 +263,8 @@ static void initData(ModifierData *md)
fmd->pack_storage.first = NULL;
fmd->pack_storage.last = NULL;
+
+ fmd->deform_weakening = 0.0f;
}
//XXX TODO, freeing functionality should be in BKE too
@@ -1868,6 +1870,7 @@ static void copyData(ModifierData *md, ModifierData
*target)
trmd->deform_distance = rmd->deform_distance;
trmd->deform_distance_weighted = rmd->deform_distance_weighted;
trmd->cluster_deform_distance = rmd->cluster_deform_distance;
+ trmd->deform_weakening = rmd->deform_weakening;
}
//XXXX TODO, is BB really useds still ? aint there exact volume calc now ?
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