Pointcache refresh part 2

* Based on what happens during simulation the cache is marked (also in cache panel, this could possibly be extended to 3d view as well) as:
	- exact (not marked)
	- outdated (simulation is not done completely with current settings)
	- non-exact (frames were skipped during simulation)

* The parameter "cache step" effects the number of frames between saved cache frames.
	- This can save a lot of memory (or disk space) if absolutely frame accurate simulation is not required.
	- Speeds up the "quick caching" very much.
	- Frames between cached frames are interpolated from the cached frames.
	- Current default value of 10 frames works nicely with up/down-arrows (skip 10 frames forwards/backwards on timeline), but can be changed if wanted.

* The caching can work in normal or "quick" mode:
	[Normal cache]
	- Basic: Calculate what even happens (settings change, big frame steps etc.) and cache results, if possible try to use "cache step" when saving cache frames.
	- Becomes non-exact: After larger than 1 frame steps.
	- Becomes outdated: After any change effecting the simulation other than frame steps.
	- Pros/cons: Freedom of doing anything and playing with particles, but exact results have to calculated from the beginning.

	[Quick cache]
	- Basic: Calculate simulation up to current frame automatically on changes with cache step sized jumps in simulation. With multiple "quick cached" simulations the smallest cache step is used.
	- Becomes non-exact: Always from frame 1 (unless cache step = 1).
	- Becomes outdated: Never.
	- Pros/cons: Not very accurate, but super fast!
	- Todo: Transform of any animated (non-autokeyed) object is locked! Probably needs some tinkering with anim sys overrides.

* The simulation can be run forwards or backwards even if it's cache is outdated or non-exact, the following rules apply in these situations:
	- step forwards (to unknown) -> simulate from last exact frame, store result
	- step backwards (to known) -> result is interpolated from existing frames, store result, clear cache forwards if current frame is after last exact frame

* "Calculate to current frame" runs the simulation from start to current frame with a frame steps of 1.
	- Baking does the same, but runs the simulation all the way to the end of simulation.
	- Rendering does this automatically if the simulation is outdated of non-exact, so all rendered simulations will always be updated and exact.
	
* Every cache panel also holds buttons to "Bake all dynamics", "Free all dynamics" and "Update all dynamics to current frame".

* Cloth simulation supports the new cache too.

1 files changed, 43 insertions, 0 deletions

diff --git a/source/blender/makesrna/intern/rna_cloth.c b/source/blender/makesrna/intern/rna_cloth.c
index 361c1b61303..cefd2316fbf 100644
--- a/source/blender/makesrna/intern/rna_cloth.c
+++ b/source/blender/makesrna/intern/rna_cloth.c
@@ -34,9 +34,24 @@
 #include "BKE_modifier.h"
 
 #include "DNA_cloth_types.h"
+#include "DNA_object_types.h"
+#include "DNA_scene_types.h"
+
+#include "WM_types.h"
 
 #ifdef RNA_RUNTIME
 
+#include "BKE_context.h"
+#include "BKE_depsgraph.h"
+
+static void rna_cloth_update(bContext *C, PointerRNA *ptr)
+{
+	Scene *scene = CTX_data_scene(C);
+	Object *ob = ptr->id.data;
+
+	DAG_object_flush_update(scene, ob, OB_RECALC_DATA);
+}
+
 static void rna_ClothSettings_max_bend_set(struct PointerRNA *ptr, float value)
 {
 	ClothSimSettings *settings = (ClothSimSettings*)ptr->data;
@@ -165,42 +180,50 @@ static void rna_def_cloth_sim_settings(BlenderRNA *brna)
 	RNA_def_property_float_sdna(prop, NULL, "mingoal");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Goal Minimum", "Goal minimum, vertex group weights are scaled to match this range.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "goal_max", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "maxgoal");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Goal Maximum", "Goal maximum, vertex group weights are scaled to match this range.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "goal_default", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "defgoal");
 	RNA_def_property_range(prop, 0.0f, 1.0f);
 	RNA_def_property_ui_text(prop, "Goal Default", "Default Goal (vertex target position) value, when no Vertex Group used.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 	
 	prop= RNA_def_property(srna, "goal_spring", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "goalspring");
 	RNA_def_property_range(prop, 0.0f, 0.999f);
 	RNA_def_property_ui_text(prop, "Goal Stiffness", "Goal (vertex target position) spring stiffness.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 	
 	prop= RNA_def_property(srna, "goal_friction", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "goalfrict");
 	RNA_def_property_range(prop, 0.0f, 50.0f);
 	RNA_def_property_ui_text(prop, "Goal Damping", "Goal (vertex target position) friction.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	/* mass */
 
 	prop= RNA_def_property(srna, "mass", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Mass", "Mass of cloth material.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "mass_vertex_group", PROP_STRING, PROP_NONE);
 	RNA_def_property_string_funcs(prop, "rna_ClothSettings_mass_vgroup_get", "rna_ClothSettings_mass_vgroup_length", "rna_ClothSettings_mass_vgroup_set");
 	RNA_def_property_ui_text(prop, "Mass Vertex Group", "Vertex group for fine control over mass distribution.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 	
 	prop= RNA_def_property(srna, "gravity", PROP_FLOAT, PROP_VECTOR);
 	RNA_def_property_array(prop, 3);
 	RNA_def_property_range(prop, -100.0, 100.0);
 	RNA_def_property_float_funcs(prop, "rna_ClothSettings_gravity_get", "rna_ClothSettings_gravity_set", NULL);
 	RNA_def_property_ui_text(prop, "Gravity", "Gravity or external force vector.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	/* various */
 
@@ -208,61 +231,73 @@ static void rna_def_cloth_sim_settings(BlenderRNA *brna)
 	RNA_def_property_float_sdna(prop, NULL, "Cvi");
 	RNA_def_property_range(prop, 0.0f, 10.0f);
 	RNA_def_property_ui_text(prop, "Air Damping", "Air has normally some thickness which slows falling things down.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "pin_cloth", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flags", CLOTH_SIMSETTINGS_FLAG_GOAL);
 	RNA_def_property_ui_text(prop, "Pin Cloth", "Define forces for vertices to stick to animated position.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "pin_stiffness", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "goalspring");
 	RNA_def_property_range(prop, 0.0f, 50.0);
 	RNA_def_property_ui_text(prop, "Pin Stiffness", "Pin (vertex target position) spring stiffness.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "quality", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "stepsPerFrame");
 	RNA_def_property_range(prop, 4, 80);
 	RNA_def_property_ui_text(prop, "Quality", "Quality of the simulation in steps per frame (higher is better quality but slower).");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	/* springs */
 
 	prop= RNA_def_property(srna, "stiffness_scaling", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flags", CLOTH_SIMSETTINGS_FLAG_SCALING);
 	RNA_def_property_ui_text(prop, "Stiffness Scaling", "If enabled, stiffness can be scaled along a weight painted vertex group.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 	
 	prop= RNA_def_property(srna, "spring_damping", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "Cdis");
 	RNA_def_property_range(prop, 0.0f, 50.0f);
 	RNA_def_property_ui_text(prop, "Spring Damping", "Damping of cloth velocity (higher = more smooth, less jiggling)");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 	
 	prop= RNA_def_property(srna, "structural_stiffness", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "structural");
 	RNA_def_property_range(prop, 1.0f, 10000.0f);
 	RNA_def_property_ui_text(prop, "Structural Stiffness", "Overall stiffness of structure.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "structural_stiffness_max", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "max_struct");
 	RNA_def_property_range(prop, 0.0f, 10000.0f);
 	RNA_def_property_float_funcs(prop, NULL, "rna_ClothSettings_max_struct_set", NULL);
 	RNA_def_property_ui_text(prop, "Structural Stiffness Maximum", "Maximum structural stiffness value.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "structural_stiffness_vertex_group", PROP_STRING, PROP_NONE);
 	RNA_def_property_string_funcs(prop, "rna_ClothSettings_struct_vgroup_get", "rna_ClothSettings_struct_vgroup_length", "rna_ClothSettings_struct_vgroup_set");
 	RNA_def_property_ui_text(prop, "Structural Stiffness Vertex Group", "Vertex group for fine control over structural stiffness.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "bending_stiffness", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "bending");
 	RNA_def_property_range(prop, 0.0f, 10000.0f);
 	RNA_def_property_ui_text(prop, "Bending Stiffness", "Wrinkle coefficient (higher = less smaller but more big wrinkles).");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "bending_stiffness_max", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "max_bend");
 	RNA_def_property_range(prop, 0.0f, 10000.0f);
 	RNA_def_property_float_funcs(prop, NULL, "rna_ClothSettings_max_bend_set", NULL);
 	RNA_def_property_ui_text(prop, "Bending Stiffness Maximum", "Maximum bending stiffness value.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "bending_vertex_group", PROP_STRING, PROP_NONE);
 	RNA_def_property_string_funcs(prop, "rna_ClothSettings_bend_vgroup_get", "rna_ClothSettings_bend_vgroup_length", "rna_ClothSettings_bend_vgroup_set");
 	RNA_def_property_ui_text(prop, "Bending Stiffness Vertex Group", "Vertex group for fine control over bending stiffness.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	/* unused */
 
@@ -323,40 +358,48 @@ static void rna_def_cloth_collision_settings(BlenderRNA *brna)
 	prop= RNA_def_property(srna, "enable_collision", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flags", CLOTH_COLLSETTINGS_FLAG_ENABLED);
 	RNA_def_property_ui_text(prop, "Enable Collision", "Enable collisions with other objects.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 	
 	prop= RNA_def_property(srna, "min_distance", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "epsilon");
 	RNA_def_property_range(prop, 0.001f, 1.0f);
 	RNA_def_property_ui_text(prop, "Minimum Distance", "Minimum distance between collision objects before collision response takes in, can be changed for each frame.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "friction", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, 0.0f, 80.0f);
 	RNA_def_property_ui_text(prop, "Friction", "Friction force if a collision happened (0=movement not changed, 100=no movement left)");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "collision_quality", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "loop_count");
 	RNA_def_property_range(prop, 1, 20);
 	RNA_def_property_ui_text(prop, "Collision Quality", "How many collision iterations should be done. (higher is better quality but slower)");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	/* self collision */
 
 	prop= RNA_def_property(srna, "enable_self_collision", PROP_BOOLEAN, PROP_NONE);
 	RNA_def_property_boolean_sdna(prop, NULL, "flags", CLOTH_COLLSETTINGS_FLAG_SELF);
 	RNA_def_property_ui_text(prop, "Enable Self Collision", "Enable self collisions.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 	
 	prop= RNA_def_property(srna, "self_min_distance", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_float_sdna(prop, NULL, "selfepsilon");
 	RNA_def_property_range(prop, 0.5f, 1.0f);
 	RNA_def_property_ui_text(prop, "Self Minimum Distance", "0.5 means no distance at all, 1.0 is maximum distance");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 	
 	prop= RNA_def_property(srna, "self_friction", PROP_FLOAT, PROP_NONE);
 	RNA_def_property_range(prop, 0.0f, 80.0f);
 	RNA_def_property_ui_text(prop, "Self Friction", "Friction/damping with self contact.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 
 	prop= RNA_def_property(srna, "self_collision_quality", PROP_INT, PROP_NONE);
 	RNA_def_property_int_sdna(prop, NULL, "self_loop_count");
 	RNA_def_property_range(prop, 1, 10);
 	RNA_def_property_ui_text(prop, "Self Collision Quality", "How many self collision iterations should be done. (higher is better quality but slower), can be changed for each frame.");
+	RNA_def_property_update(prop, NC_OBJECT|ND_GEOM_DATA, "rna_cloth_update");
 }
 
 void RNA_def_cloth(BlenderRNA *brna)