2.5: Blender "Animato" - New Animation System

Finally, here is the basic (functional) prototype of the new animation system which will allow for the infamous "everything is animatable", and which also addresses several of the more serious shortcomings of the old system. Unfortunately, this will break old animation files (especially right now, as I haven't written the version patching code yet), however, this is for the future.

Highlights of the new system:
* Scrapped IPO-Curves/IPO/(Action+Constraint-Channels)/Action system, and replaced it with F-Curve/Action. 
- F-Curves (animators from other packages will feel at home with this name) replace IPO-Curves. 
- The 'new' Actions, act as the containers for F-Curves, so that they can be reused. They are therefore more akin to the old 'IPO' blocks, except they do not have the blocktype restriction, so you can store materials/texture/geometry F-Curves in the same Action as Object transforms, etc.
* F-Curves use RNA-paths for Data Access, hence allowing "every" (where sensible/editable that is) user-accessible setting from RNA to be animated.
* Drivers are no longer mixed with Animation Data, so rigs will not be that easily broken and several dependency problems can be eliminated. (NOTE: drivers haven't been hooked up yet, but the code is in place)
* F-Curve modifier system allows useful 'large-scale' manipulation of F-Curve values, including (I've only included implemented ones here): envelope deform (similar to lattices to allow broad-scale reshaping of curves), curve generator (polynomial or py-expression), cycles (replacing the old cyclic extrapolation modes, giving more control over this). (NOTE: currently this cannot be tested, as there's not access to them, but the code is all in place)
* NLA system with 'tracks' (i.e. layers), and multiple strips per track. (NOTE: NLA system is not yet functional, as it's only partially coded still) 

There are more nice things that I will be preparing some nice docs for soon, but for now, check for more details:
http://lists.blender.org/pipermail/bf-taskforce25/2009-January/000260.html

So, what currently works:
* I've implemented two basic operators for the 3D-view only to Insert and Delete Keyframes. These are tempolary ones only that will be replaced in due course with 'proper' code.
* Object Loc/Rot/Scale can be keyframed. Also, the colour of the 'active' material (Note: this should really be for nth material instead, but that doesn't work yet in RNA) can also be keyframed into the same datablock.
* Standard animation refresh (i.e. animation resulting from NLA and Action evaluation) is now done completely separate from drivers before anything else is done after a frame change. Drivers are handled after this in a separate pass, as dictated by depsgraph flags, etc.

Notes:
* Drivers haven't been hooked up yet
* Only objects and data directly linked to objects can be animated.
* Depsgraph will need further tweaks. Currently, I've only made sure that it will update some things in the most basic cases (i.e. frame change).
* Animation Editors are currently broken (in terms of editing stuff). This will be my next target (priority to get Dopesheet working first, then F-Curve editor - i.e. old IPO Editor)
* I've had to put in large chunks of XXX sandboxing for old animation system code all around the place. This will be cleaned up in due course, as some places need special review.
In particular, the particles and sequencer code have far too many manual calls to calculate + flush animation info, which is really bad (this is a 'please explain yourselves' call to Physics coders!).

3 files changed, 14 insertions, 19 deletions

diff --git a/source/blender/editors/include/ED_anim_api.h b/source/blender/editors/include/ED_anim_api.h
index 8b3d5df61ba..20c72c9f0e2 100644
--- a/source/blender/editors/include/ED_anim_api.h
+++ b/source/blender/editors/include/ED_anim_api.h
@@ -158,7 +158,7 @@ typedef enum eAnimFilter_Flags {
 	ANIMFILTER_FOREDIT		= (1<<2),	/* does editable status matter */
 	ANIMFILTER_CHANNELS		= (1<<3),	/* do we only care that it is a channel */
 	ANIMFILTER_IPOKEYS		= (1<<4),	/* only channels referencing ipo's */
-	ANIMFILTER_ONLYICU		= (1<<5),	/* only reference ipo-curves */
+	ANIMFILTER_ONLYFCU		= (1<<5),	/* only reference ipo-curves */
 	ANIMFILTER_FORDRAWING	= (1<<6),	/* make list for interface drawing */
 	ANIMFILTER_ACTGROUPED	= (1<<7),	/* belongs to the active actiongroup */
 } eAnimFilter_Flags;
diff --git a/source/blender/editors/include/ED_keyframes_edit.h b/source/blender/editors/include/ED_keyframes_edit.h
index eb6f422e425..77d41ace857 100644
--- a/source/blender/editors/include/ED_keyframes_edit.h
+++ b/source/blender/editors/include/ED_keyframes_edit.h
@@ -32,6 +32,7 @@
 struct bAnimContext;
 struct Ipo;
 struct IpoCurve;
+struct FCurve;
 struct BezTriple;
 struct Scene;
 
@@ -130,12 +131,12 @@ void ANIM_editkeyframes_ipocurve_ipotype(struct IpoCurve *icu);
 /* ************************************************ */
 /* Destructive Editing API (keyframes_general.c) */
 
-void delete_icu_key(struct IpoCurve *icu, int index, short do_recalc);
+void delete_fcurve_key(struct FCurve *fcu, int index, short do_recalc);
 void delete_ipo_keys(struct Ipo *ipo);
 void duplicate_ipo_keys(struct Ipo *ipo);
 
-void clean_ipo_curve(struct IpoCurve *icu, float thresh);
-void smooth_ipo_curve(struct IpoCurve *icu, short mode);
+void clean_fcurve(struct FCurve *fcu, float thresh);
+void smooth_fcurve(struct FCurve *fcu, short mode);
 
 /* ************************************************ */
 
diff --git a/source/blender/editors/include/ED_keyframing.h b/source/blender/editors/include/ED_keyframing.h
index fe456c7ea4b..e7bdbb86ffa 100644
--- a/source/blender/editors/include/ED_keyframing.h
+++ b/source/blender/editors/include/ED_keyframing.h
@@ -31,15 +31,10 @@
 struct ListBase;
 struct ID;
 
-struct Ipo;
-struct IpoCurve;
+struct FCurve;
 struct BezTriple;
 
-/* ************ IPO/IPO-Curve Management ************** */
-// XXX these will need to be updated for RNA-IPO stuff
-
-struct Ipo *verify_ipo(struct ID *from, short blocktype, char actname[], char constname[], char bonename[], short add);
-struct IpoCurve *verify_ipocurve(struct ID *from, short blocktype, char actname[], char constname[], char bonename[], int adrcode, short add);
+struct wmOperatorType;
 
 /* ************ Keyframing Management **************** */
 
@@ -47,13 +42,13 @@ struct IpoCurve *verify_ipocurve(struct ID *from, short blocktype, char actname[
  *	Use this when validation of necessary animation data isn't necessary as it already
  * 	exists, and there is a beztriple that can be directly copied into the array.
  */
-int insert_bezt_icu(struct IpoCurve *icu, struct BezTriple *bezt);
+int insert_bezt_fcurve(struct FCurve *fcu, struct BezTriple *bezt);
 
 /* Main Keyframing API call: 
  *	Use this when validation of necessary animation data isn't necessary as it
  *	already exists. It will insert a keyframe using the current value being keyframed.
  */
-void insert_vert_icu(struct IpoCurve *icu, float x, float y, short flag);
+void insert_vert_fcurve(struct FCurve *fcu, float x, float y, short flag);
 
 
 /* flags for use by keyframe creation/deletion calls */
@@ -78,21 +73,20 @@ enum {
  *	Use this to create any necessary animation data, and then insert a keyframe
  *	using the current value being keyframed, in the relevant place. Returns success.
  */
-	// TODO: adapt this for new data-api -> this blocktype, etc. stuff is evil!
-short insertkey(struct ID *id, int blocktype, char *actname, char *constname, int adrcode, short flag);
+short insertkey(struct ID *id, const char rna_path[], int array_index, float cfra, short flag);
 
 /* Main Keyframing API call: 
  * 	Use this to delete keyframe on current frame for relevant channel. Will perform checks just in case.
  */
-short deletekey(struct ID *id, int blocktype, char *actname, char *constname, int adrcode, short flag);
+short deletekey(struct ID *id, const char rna_path[], int array_index, float cfra, short flag);
 
 
-/* Main Keyframe Management calls: 
+/* Main Keyframe Management operators: 
  *	These handle keyframes management from various spaces. They will handle the menus 
  * 	required for each space.
  */
-void common_insertkey(const struct bContext *C);
-void common_deletekey(const struct bContext *C);
+void ANIM_OT_insert_keyframe(struct wmOperatorType *ot);
+void ANIM_OT_delete_keyframe(struct wmOperatorType *ot);
 
 /* ************ Auto-Keyframing ********************** */
 /* Notes: