Pointcache refresh part 1:

* Particles support larger than 1 frame changes, bigger frame changes can result in inaccurate results, but it's super fast and you get a nice feeling of how the particles behave!
* "Cache to current frame" button calculates the exact result of particles at current frame.
* Current state of cache can be protected by making it a bake.
* Cache is now in memory by default, disk cache is an option.
* Only "viewport %" number of particles are calculated and cached in viewport, baking and rendering calculate all particles.
* Info on cached frames and memory usage given in ui.
* Support for exact "autocaching" of changes and large frame changes(disabled for now until exact place in event system is decided)
* "Continue physics" is probably deprecated after this and should be removed once sb & cloth use the new cache code.

Todo:
* Make softbody & cloth use the new cache things.

Other changes:
* Some cleanup of particle buttons.

1 files changed, 18 insertions, 1 deletions

diff --git a/source/blender/makesdna/DNA_object_force.h b/source/blender/makesdna/DNA_object_force.h
index 718d1a17834..a8d402fc503 100644
--- a/source/blender/makesdna/DNA_object_force.h
+++ b/source/blender/makesdna/DNA_object_force.h
@@ -33,6 +33,8 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
+
+#include "DNA_listBase.h"
 	
 typedef struct PartDeflect {
 	short deflect;		/* Deflection flag - does mesh deflect particles*/
@@ -72,12 +74,25 @@ typedef struct PartDeflect {
 	int seed; /* wind noise random seed */
 } PartDeflect;
 
+typedef struct PTCacheMem {
+	struct PTCacheMem *next, *prev;
+	int frame, totpoint;
+	float *data;	/* data points */
+	void *xdata;	/* extra data */
+} PTCacheMem;
+
 typedef struct PointCache {
-	int flag;		/* generic flag */
+	int flag, rt;		/* generic flag */
 	int simframe;	/* current frame of simulation (only if SIMULATION_VALID) */
 	int startframe;	/* simulation start frame */
 	int endframe;	/* simulation end frame */
 	int editframe;	/* frame being edited (runtime only) */
+	int last_exact; /* last exact frame that's cached */
+	int xdata_type;	/* type of extra data */
+	char name[64];
+	char prev_name[64];
+	char info[64];
+	struct ListBase mem_cache;
 } PointCache;
 
 typedef struct SBVertex {
@@ -247,6 +262,8 @@ typedef struct SoftBody {
 #define PTCACHE_BAKING				8
 #define PTCACHE_BAKE_EDIT			16
 #define PTCACHE_BAKE_EDIT_ACTIVE	32
+#define PTCACHE_DISK_CACHE			64
+#define PTCACHE_AUTOCACHE			128
 
 /* ob->softflag */
 #define OB_SB_ENABLE	1