Point cache editing:

- Baked point caches for particles, cloth and softbody can now be edited in particle mode.
	* This overwrites the old cloth/sb cache editmode editing.
	* The type of editable system is chosen from a menu.
	* For particles the current particle system and it's current cache are used.
- Currently this only works for caches that are in memory, but some automatic conversion from disk to memory and back can be implemented later.
- All tools from hair editing can't be applied to point caches and are hidden in the tool panel and specials menu. Some functionality like subdividing paths can be later implemented in a slightly different way from how it works for hair.
- Code is not yet optimized for speed, so editing might be slow sometimes.

Known issues:
- Cloth doesn't update properly while in particle mode, due to the way cloth modifier currently works. Daniel can you check on this?
- As "particle mode" is not only for particles any more some other name would be in place?
- Better icons are needed for the path, point, and tip-modes as the current icons from mesh edit mode are quite misleading.
- Direct editing of point velocities is not yet implemented, but will be in the future.

Other changes:
- Hair editing doesn't require a "make editable" button press any more.
- Multiple caches in single particle system disables changing emission properties.
- Unified ui code for all point cache panels.
	* Defined in buttons_particle.py and imported for cloth, smoke & softbody.
- Proper disabling of properties in ui after baking point caches. (Daniel could you please make needed disable code for smoke panels as their functionality is not familiar to me.)
- Hair weight brush has been removed. Once hair dynamics is re-implemented I'll code a more useable alternative to the functionality.

Bug fixes:
- Unlinking particle settings crashed.
- Deleting the active object with particles in the scene crashed.
- Softbody didn't write point caches correctly on save.

2 files changed, 104 insertions, 97 deletions

diff --git a/source/blender/editors/space_view3d/drawobject.c b/source/blender/editors/space_view3d/drawobject.c
index 6cf229ead31..e49616fc740 100644
--- a/source/blender/editors/space_view3d/drawobject.c
+++ b/source/blender/editors/space_view3d/drawobject.c
@@ -89,6 +89,7 @@
 #include "BKE_object.h"
 #include "BKE_paint.h"
 #include "BKE_particle.h"
+#include "BKE_pointcache.h"
 #include "BKE_property.h"
 #include "BKE_smoke.h"
 #include "BKE_unit.h"
@@ -3138,6 +3139,7 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv
 {
 	Object *ob=base->object;
 	ParticleSystemModifierData *psmd;
+	ParticleEditSettings *pset = PE_settings(scene);
 	ParticleSettings *part;
 	ParticleData *pars, *pa;
 	ParticleKey state, *states=0;
@@ -3166,9 +3168,8 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv
 
 	if(pars==0) return;
 
-	// XXX what logic is this?
-	if(!scene->obedit && psys_in_edit_mode(scene, psys)
-		&& psys->flag & PSYS_HAIR_DONE && part->draw_as==PART_DRAW_PATH)
+	/* don't draw normal paths in edit mode */
+	if(psys_in_edit_mode(scene, psys) && (pset->flag & PE_DRAW_PART)==0)
 		return;
 		
 	if(part->draw_as==PART_DRAW_NOT) return;
@@ -3709,33 +3710,27 @@ static void draw_new_particle_system(Scene *scene, View3D *v3d, RegionView3D *rv
 		wmLoadMatrix(rv3d->viewmat);
 }
 
-static void draw_particle_edit(Scene *scene, View3D *v3d, RegionView3D *rv3d, Object *ob, ParticleSystem *psys, int dt)
+static void draw_ptcache_edit(Scene *scene, View3D *v3d, RegionView3D *rv3d, Object *ob, PTCacheEdit *edit, int dt)
 {
-	ParticleEdit *edit = psys->edit;
-	ParticleData *pa;
-	ParticleCacheKey **path;
-	ParticleEditKey *key;
+	ParticleCacheKey **cache, *path, *pkey;
+	PTCacheEditPoint *point;
+	PTCacheEditKey *key;
 	ParticleEditSettings *pset = PE_settings(scene);
-	int i, k, totpart = psys->totpart, totchild=0, timed = pset->draw_timed;
+	int i, k, totpoint = edit->totpoint, timed = pset->flag & PE_FADE_TIME ? pset->fade_frames : 0;
+	int steps;
 	char nosel[4], sel[4];
 	float sel_col[3];
 	float nosel_col[3];
-	char val[32];
+	float *pathcol = NULL, *pcol;
 
 	/* create path and child path cache if it doesn't exist already */
-	if(psys->pathcache==0){
-		PE_hide_keys_time(scene, psys,CFRA);
-		psys_cache_paths(scene, ob, psys, CFRA,0);
-	}
-	if(psys->pathcache==0)
+	if(edit->pathcache==0)
+		psys_cache_edit_paths(scene, ob, edit, CFRA);
+
+	if(edit->pathcache==0)
 		return;
 
-	if(pset->flag & PE_SHOW_CHILD && psys->part->draw_as == PART_DRAW_PATH) {
-		if(psys->childcache==0)
-			psys_cache_child_paths(scene, ob, psys, CFRA, 0);
-	}
-	else if(!(pset->flag & PE_SHOW_CHILD) && psys->childcache)
-		free_child_path_cache(psys);
+	PE_hide_keys_time(scene, edit, CFRA);
 
 	/* opengl setup */
 	if((v3d->flag & V3D_ZBUF_SELECT)==0)
@@ -3751,65 +3746,50 @@ static void draw_particle_edit(Scene *scene, View3D *v3d, RegionView3D *rv3d, Ob
 	nosel_col[1]=(float)nosel[1]/255.0f;
 	nosel_col[2]=(float)nosel[2]/255.0f;
 
-	if(psys->childcache)
-		totchild = psys->totchildcache;
 
 	/* draw paths */
-	if(timed)
+	if(timed) {
 		glEnable(GL_BLEND);
+		steps = (*edit->pathcache)->steps + 1;
+		pathcol = MEM_callocN(steps*4*sizeof(float), "particle path color data");
+	}
 
 	glEnableClientState(GL_VERTEX_ARRAY);
 
-	if(dt > OB_WIRE) {
-		/* solid shaded with lighting */
-		glEnableClientState(GL_NORMAL_ARRAY);
-		glEnableClientState(GL_COLOR_ARRAY);
+	/* solid shaded with lighting */
+	glEnableClientState(GL_NORMAL_ARRAY);
+	glEnableClientState(GL_COLOR_ARRAY);
 
-		glEnable(GL_COLOR_MATERIAL);
-		glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
-	}
-	else {
-		/* flat wire color */
-		glDisableClientState(GL_NORMAL_ARRAY);
-		glDisable(GL_LIGHTING);
-		UI_ThemeColor(TH_WIRE);
-	}
+	glEnable(GL_COLOR_MATERIAL);
+	glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE);
 
 	/* only draw child paths with lighting */
 	if(dt > OB_WIRE)
 		glEnable(GL_LIGHTING);
 
-	if(psys->part->draw_as == PART_DRAW_PATH) {
-		for(i=0, path=psys->childcache; i<totchild; i++,path++){
-			glVertexPointer(3, GL_FLOAT, sizeof(ParticleCacheKey), (*path)->co);
-			if(dt > OB_WIRE) {
-				glNormalPointer(GL_FLOAT, sizeof(ParticleCacheKey), (*path)->vel);
-				glColorPointer(3, GL_FLOAT, sizeof(ParticleCacheKey), (*path)->col);
+	/* draw paths without lighting */
+	cache=edit->pathcache;
+	for(i=0; i<totpoint; i++){
+		path = cache[i];
+		glVertexPointer(3, GL_FLOAT, sizeof(ParticleCacheKey), path->co);
+		glNormalPointer(GL_FLOAT, sizeof(ParticleCacheKey), path->vel);
+
+		if(timed) {
+			for(k=0, pcol=pathcol, pkey=path; k<steps; k++, pkey++, pcol+=4){
+				VECCOPY(pcol, pkey->col);
+				pcol[3] = 1.0f - fabs((float)CFRA - pkey->time)/(float)pset->fade_frames;
 			}
 
-			glDrawArrays(GL_LINE_STRIP, 0, (int)(*path)->steps + 1);
+			glColorPointer(4, GL_FLOAT, 4*sizeof(float), pathcol);
 		}
-	}
-
-	if(dt > OB_WIRE)
-		glDisable(GL_LIGHTING);
+		else
+			glColorPointer(3, GL_FLOAT, sizeof(ParticleCacheKey), path->col);
 
-	if(pset->brushtype == PE_BRUSH_WEIGHT) {
-		glLineWidth(2.0f);
-		glEnableClientState(GL_COLOR_ARRAY);
-		glDisable(GL_LIGHTING);
+		glDrawArrays(GL_LINE_STRIP, 0, path->steps + 1);
 	}
 
-	/* draw parents last without lighting */
-	for(i=0, pa=psys->particles, path = psys->pathcache; i<totpart; i++, pa++, path++){
-		glVertexPointer(3, GL_FLOAT, sizeof(ParticleCacheKey), (*path)->co);
-		if(dt > OB_WIRE)
-			glNormalPointer(GL_FLOAT, sizeof(ParticleCacheKey), (*path)->vel);
-		if(dt > OB_WIRE || pset->brushtype == PE_BRUSH_WEIGHT)
-			glColorPointer(3, GL_FLOAT, sizeof(ParticleCacheKey), (*path)->col);
+	if(pathcol) { MEM_freeN(pathcol); pathcol = pcol = NULL; }
 
-		glDrawArrays(GL_LINE_STRIP, 0, (int)(*path)->steps + 1);
-	}
 
 	/* draw edit vertices */
 	if(pset->selectmode!=SCE_SELECT_PATH){
@@ -3819,61 +3799,74 @@ static void draw_particle_edit(Scene *scene, View3D *v3d, RegionView3D *rv3d, Ob
 		glPointSize(UI_GetThemeValuef(TH_VERTEX_SIZE));
 
 		if(pset->selectmode==SCE_SELECT_POINT){
+			float *pd=0,*pdata=0;
 			float *cd=0,*cdata=0;
-			cd=cdata=MEM_callocN(edit->totkeys*(timed?4:3)*sizeof(float), "particle edit color data");
+			int totkeys = 0;
+
+			for (i=0, point=edit->points; i<totpoint; i++, point++)
+				if(!(point->flag & PEP_HIDE))
+					totkeys += point->totkey;
+
+			if(!edit->psys)
+				pd=pdata=MEM_callocN(totkeys*3*sizeof(float), "particle edit point data");
+			cd=cdata=MEM_callocN(totkeys*(timed?4:3)*sizeof(float), "particle edit color data");
+
+			for(i=0, point=edit->points; i<totpoint; i++, point++){
+				if(point->flag & PEP_HIDE)
+					continue;
+
+				for(k=0, key=point->keys; k<point->totkey; k++, key++){
+					if(pd) {
+						VECCOPY(pd, key->co);
+						pd += 3;
+					}
 
-			for(i=0, pa=psys->particles; i<totpart; i++, pa++){
-				for(k=0, key=edit->keys[i]; k<pa->totkey; k++, key++){
 					if(key->flag&PEK_SELECT){
 						VECCOPY(cd,sel_col);
 					}
 					else{
 						VECCOPY(cd,nosel_col);
 					}
+
 					if(timed)
-						*(cd+3) = (key->flag&PEK_HIDE)?0.0f:1.0f;
+						*(cd+3) = 1.0f - fabs((float)CFRA - *key->time)/(float)pset->fade_frames;
+
 					cd += (timed?4:3);
 				}
 			}
 			cd=cdata;
-			for(i=0, pa=psys->particles; i<totpart; i++, pa++){
-				if((pa->flag & PARS_HIDE)==0){
-					glVertexPointer(3, GL_FLOAT, sizeof(ParticleEditKey), edit->keys[i]->world_co);
-					glColorPointer((timed?4:3), GL_FLOAT, (timed?4:3)*sizeof(float), cd);
-					glDrawArrays(GL_POINTS, 0, pa->totkey);
-				}
-				cd += (timed?4:3) * pa->totkey;
+			pd=pdata;
+			for(i=0, point=edit->points; i<totpoint; i++, point++){
+				if(point->flag & PEP_HIDE)
+					continue;
 
-				if((pset->flag&PE_SHOW_TIME) && (pa->flag&PARS_HIDE)==0 && !(G.f & G_RENDER_SHADOW)){
-					for(k=0, key=edit->keys[i]+k; k<pa->totkey; k++, key++){
-						if(key->flag & PEK_HIDE) continue;
+				if(edit->psys)
+					glVertexPointer(3, GL_FLOAT, sizeof(PTCacheEditKey), point->keys->world_co);
+				else
+					glVertexPointer(3, GL_FLOAT, 3*sizeof(float), pd);
 
-						sprintf(val," %.1f",*key->time);
-						view3d_particle_text_draw_add(key->world_co[0], key->world_co[1], key->world_co[2], val, 0);
-					}
-				}
+				glColorPointer((timed?4:3), GL_FLOAT, (timed?4:3)*sizeof(float), cd);
+
+				glDrawArrays(GL_POINTS, 0, point->totkey);
+
+				pd += pd ? 3 * point->totkey : 0;
+				cd += (timed?4:3) * point->totkey;
 			}
-			if(cdata)
-				MEM_freeN(cdata);
-			cd=cdata=0;
+			if(pdata) { MEM_freeN(pdata); pd=pdata=0; }
+			if(cdata) { MEM_freeN(cdata); cd=cdata=0; }
 		}
 		else if(pset->selectmode == SCE_SELECT_END){
-			for(i=0, pa=psys->particles; i<totpart; i++, pa++){
-				if((pa->flag & PARS_HIDE)==0){
-					key = edit->keys[i] + pa->totkey - 1;
+			for(i=0, point=edit->points; i<totpoint; i++, point++){
+				if((point->flag & PEP_HIDE)==0){
+					key = point->keys + point->totkey - 1;
 					if(key->flag & PEK_SELECT)
 						glColor3fv(sel_col);
 					else
 						glColor3fv(nosel_col);
 					/* has to be like this.. otherwise selection won't work, have try glArrayElement later..*/
 					glBegin(GL_POINTS);
-					glVertex3fv(key->world_co);
+					glVertex3fv(key->flag & PEK_USE_WCO ? key->world_co : key->co);
 					glEnd();
-
-					if((pset->flag & PE_SHOW_TIME) && !(G.f & G_RENDER_SHADOW)){
-						sprintf(val," %.1f",*key->time);
-						view3d_particle_text_draw_add(key->world_co[0], key->world_co[1], key->world_co[2], val, 0);
-					}
 				}
 			}
 		}
@@ -5298,11 +5291,6 @@ void draw_object(Scene *scene, ARegion *ar, View3D *v3d, Base *base, int flag)
 		for(psys=ob->particlesystem.first; psys; psys=psys->next)
 			draw_new_particle_system(scene, v3d, rv3d, base, psys, dt);
 		
-		if(ob->mode & OB_MODE_PARTICLE_EDIT && ob==OBACT) {
-			psys= PE_get_current(scene, ob);
-			if(psys && !scene->obedit && psys_in_edit_mode(scene, psys))
-				draw_particle_edit(scene, v3d, rv3d, ob, psys, dt);
-		}
 		view3d_particle_text_draw(v3d, ar);
 
 		wmMultMatrix(ob->obmat);
@@ -5310,6 +5298,21 @@ void draw_object(Scene *scene, ARegion *ar, View3D *v3d, Base *base, int flag)
 		//glDepthMask(GL_TRUE);
 		if(col) cpack(col);
 	}
+	
+	if(		(warning_recursive==0) &&
+			(flag & DRAW_PICKING)==0 &&
+			(!scene->obedit)	
+	  ) {
+
+		if(ob->mode & OB_MODE_PARTICLE_EDIT && ob==OBACT) {
+			PTCacheEdit *edit = PE_get_current(scene, ob);
+			if(edit) {
+				wmLoadMatrix(rv3d->viewmat);
+				draw_ptcache_edit(scene, v3d, rv3d, ob, edit, dt);
+				wmMultMatrix(ob->obmat);
+			}
+		}
+	}
 
 	/* draw code for smoke */
 	{
diff --git a/source/blender/editors/space_view3d/view3d_header.c b/source/blender/editors/space_view3d/view3d_header.c
index eee85f21798..305b6956037 100644
--- a/source/blender/editors/space_view3d/view3d_header.c
+++ b/source/blender/editors/space_view3d/view3d_header.c
@@ -1571,7 +1571,7 @@ static char *view3d_modeselect_pup(Scene *scene)
 		str += sprintf(str, formatstr, "Pose Mode", OB_MODE_POSE, ICON_POSE_HLT);
 	}
 
-	if (ob->particlesystem.first) {
+	if (ob->particlesystem.first || modifiers_findByType(ob, eModifierType_Cloth) || modifiers_findByType(ob, eModifierType_Softbody)) {
 		str += sprintf(str, formatstr, "Particle Mode", OB_MODE_PARTICLE_EDIT, ICON_PARTICLEMODE);
 	}
 
@@ -1661,6 +1661,7 @@ static void do_view3d_header_buttons(bContext *C, void *arg, int event)
 	ScrArea *sa= CTX_wm_area(C);
 	View3D *v3d= sa->spacedata.first;
 	Object *obedit = CTX_data_edit_object(C);
+	Object *ob = CTX_data_active_object(C);
 	EditMesh *em= NULL;
 	int bit, ctrl= win->eventstate->ctrl, shift= win->eventstate->shift;
 	PointerRNA props_ptr;
@@ -1759,14 +1760,17 @@ static void do_view3d_header_buttons(bContext *C, void *arg, int event)
 
 	case B_SEL_PATH:
 		ts->particle.selectmode= SCE_SELECT_PATH;
+		WM_event_add_notifier(C, NC_OBJECT, ob);
 		ED_undo_push(C, "Selectmode Set: Path");
 		break;
 	case B_SEL_POINT:
 		ts->particle.selectmode = SCE_SELECT_POINT;
+		WM_event_add_notifier(C, NC_OBJECT, ob);
 		ED_undo_push(C, "Selectmode Set: Point");
 		break;
 	case B_SEL_END:
 		ts->particle.selectmode = SCE_SELECT_END;
+		WM_event_add_notifier(C, NC_OBJECT, ob);
 		ED_undo_push(C, "Selectmode Set: End point");
 		break;