Welcome to mirror list, hosted at ThFree Co, Russian Federation.

git.blender.org/blender.git - Unnamed repository; edit this file 'description' to name the repository.
summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat (limited to 'source/blender/editors/armature/poseSlide.c')
-rw-r--r--source/blender/editors/armature/poseSlide.c936
1 files changed, 936 insertions, 0 deletions
diff --git a/source/blender/editors/armature/poseSlide.c b/source/blender/editors/armature/poseSlide.c
new file mode 100644
index 00000000000..c73208c54c2
--- /dev/null
+++ b/source/blender/editors/armature/poseSlide.c
@@ -0,0 +1,936 @@
+/**
+ * $Id$
+ *
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2009, Blender Foundation, Joshua Leung
+ * This is a new part of Blender
+ *
+ * Contributor(s): Joshua Leung
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stddef.h>
+#include <string.h>
+#include <math.h>
+#include <float.h>
+
+#include "MEM_guardedalloc.h"
+
+#include "BLI_arithb.h"
+#include "BLI_blenlib.h"
+#include "BLI_dynstr.h"
+#include "BLI_dlrbTree.h"
+
+#include "DNA_listBase.h"
+#include "DNA_anim_types.h"
+#include "DNA_action_types.h"
+#include "DNA_armature_types.h"
+#include "DNA_curve_types.h"
+#include "DNA_object_types.h"
+#include "DNA_object_force.h"
+#include "DNA_scene_types.h"
+#include "DNA_userdef_types.h"
+
+#include "BKE_animsys.h"
+#include "BKE_action.h"
+#include "BKE_armature.h"
+#include "BKE_depsgraph.h"
+#include "BKE_fcurve.h"
+#include "BKE_object.h"
+
+#include "BKE_global.h"
+#include "BKE_context.h"
+#include "BKE_report.h"
+#include "BKE_utildefines.h"
+
+#include "RNA_access.h"
+#include "RNA_define.h"
+#include "RNA_types.h"
+
+#include "WM_api.h"
+#include "WM_types.h"
+
+#include "UI_interface.h"
+#include "UI_resources.h"
+
+#include "BIF_gl.h"
+
+#include "ED_anim_api.h"
+#include "ED_armature.h"
+#include "ED_keyframes_draw.h"
+#include "ED_keyframing.h"
+#include "ED_keyframes_edit.h"
+#include "ED_screen.h"
+
+#include "armature_intern.h"
+
+/* **************************************************** */
+/* == POSE 'SLIDING' TOOLS ==
+ *
+ * A) Push & Relax, Breakdowner
+ * These tools provide the animator with various capabilities
+ * for interactively controlling the spacing of poses, but also
+ * for 'pushing' and/or 'relaxing' extremes as they see fit.
+ *
+ * B) Pose Sculpting
+ * This is yet to be implemented, but the idea here is to use
+ * sculpting techniques to make it easier to pose rigs by allowing
+ * rigs to be manipulated using a familiar paint-based interface.
+ */
+/* **************************************************** */
+/* A) Push & Relax, Breakdowner */
+
+/* Temporary data shared between these operators */
+typedef struct tPoseSlideOp {
+ Scene *scene; /* current scene */
+ ARegion *ar; /* region that we're operating in (needed for */
+ Object *ob; /* active object that Pose Info comes from */
+ bArmature *arm; /* armature for pose */
+
+ ListBase pfLinks; /* links between posechannels and f-curves */
+ DLRBT_Tree keys; /* binary tree for quicker searching for keyframes (when applicable) */
+
+ KeyingSet *ks_loc; /* builtin KeyingSet for keyframing locations */
+ KeyingSet *ks_rot; /* builtin KeyingSet for keyframing rotations */
+ KeyingSet *ks_scale;/* builtin KeyingSet for keyframing scale */
+
+ int cframe; /* current frame number */
+ int prevFrame; /* frame before current frame (blend-from) */
+ int nextFrame; /* frame after current frame (blend-to) */
+
+ int mode; /* sliding mode (ePoseSlide_Modes) */
+ int flag; // unused for now, but can later get used for storing runtime settings....
+
+ float percentage; /* 0-1 value for determining the influence of whatever is relevant */
+} tPoseSlideOp;
+
+/* Pose Sliding Modes */
+typedef enum ePoseSlide_Modes {
+ POSESLIDE_PUSH = 0, /* exaggerate the pose... */
+ POSESLIDE_RELAX, /* soften the pose... */
+ POSESLIDE_BREAKDOWN, /* slide between the endpoint poses, finding a 'soft' spot */
+} ePoseSlide_Modes;
+
+/* Temporary data linking PoseChannels with the F-Curves they affect */
+typedef struct tPChanFCurveLink {
+ struct tPChanFCurveLink *next, *prev;
+
+ ListBase fcurves; /* F-Curves for this PoseChannel */
+ bPoseChannel *pchan; /* Pose Channel which data is attached to */
+
+ char *pchan_path; /* RNA Path to this Pose Channel (needs to be freed when we're done) */
+
+ float oldloc[3]; /* transform values at start of operator (to be restored before each modal step) */
+ float oldrot[3];
+ float oldscale[3];
+ float oldquat[4];
+} tPChanFCurveLink;
+
+/* ------------------------------------ */
+
+/* operator init */
+static int pose_slide_init (bContext *C, wmOperator *op, short mode)
+{
+ tPoseSlideOp *pso;
+ bAction *act= NULL;
+
+ /* init slide-op data */
+ pso= op->customdata= MEM_callocN(sizeof(tPoseSlideOp), "tPoseSlideOp");
+
+ /* get info from context */
+ pso->scene= CTX_data_scene(C);
+ pso->ob= CTX_data_active_object(C);
+ pso->arm= (pso->ob)? pso->ob->data : NULL;
+ pso->ar= CTX_wm_region(C); /* only really needed when doing modal() */
+
+ pso->cframe= pso->scene->r.cfra;
+ pso->mode= mode;
+
+ /* set range info from property values - these may get overridden for the invoke() */
+ pso->percentage= RNA_float_get(op->ptr, "percentage");
+ pso->prevFrame= RNA_int_get(op->ptr, "prev_frame");
+ pso->nextFrame= RNA_int_get(op->ptr, "next_frame");
+
+ /* check the settings from the context */
+ if (ELEM4(NULL, pso->ob, pso->arm, pso->ob->adt, pso->ob->adt->action))
+ return 0;
+ else
+ act= pso->ob->adt->action;
+
+ /* for each Pose-Channel which gets affected, get the F-Curves for that channel
+ * and set the relevant transform flags...
+ */
+ CTX_DATA_BEGIN(C, bPoseChannel*, pchan, selected_pchans)
+ {
+ ListBase curves = {NULL, NULL};
+ int transFlags = action_get_item_transforms(act, pso->ob, pchan, &curves);
+
+ pchan->flag &= ~(POSE_LOC|POSE_ROT|POSE_SIZE);
+
+ /* check if any transforms found... */
+ if (transFlags) {
+ /* make new linkage data */
+ tPChanFCurveLink *pfl= MEM_callocN(sizeof(tPChanFCurveLink), "tPChanFCurveLink");
+ PointerRNA ptr;
+
+ pfl->fcurves= curves;
+ pfl->pchan= pchan;
+
+ /* get the RNA path to this pchan - this needs to be freed! */
+ RNA_pointer_create((ID *)pso->ob, &RNA_PoseChannel, pchan, &ptr);
+ pfl->pchan_path= RNA_path_from_ID_to_struct(&ptr);
+
+ /* add linkage data to operator data */
+ BLI_addtail(&pso->pfLinks, pfl);
+
+ /* set pchan's transform flags */
+ if (transFlags & ACT_TRANS_LOC)
+ pchan->flag |= POSE_LOC;
+ if (transFlags & ACT_TRANS_ROT)
+ pchan->flag |= POSE_ROT;
+ if (transFlags & ACT_TRANS_SCALE)
+ pchan->flag |= POSE_SIZE;
+
+ /* store current transforms */
+ VECCOPY(pfl->oldloc, pchan->loc);
+ VECCOPY(pfl->oldrot, pchan->eul);
+ VECCOPY(pfl->oldscale, pchan->size);
+ QUATCOPY(pfl->oldquat, pchan->quat);
+ }
+ }
+ CTX_DATA_END;
+
+ /* set depsgraph flags */
+ /* make sure the lock is set OK, unlock can be accidentally saved? */
+ pso->ob->pose->flag |= POSE_LOCKED;
+ pso->ob->pose->flag &= ~POSE_DO_UNLOCK;
+
+ /* do basic initialise of RB-BST used for finding keyframes, but leave the filling of it up
+ * to the caller of this (usually only invoke() will do it, to make things more efficient).
+ */
+ BLI_dlrbTree_init(&pso->keys);
+
+ /* get builtin KeyingSets */
+ pso->ks_loc= ANIM_builtin_keyingset_get_named(NULL, "Location");
+ pso->ks_rot= ANIM_builtin_keyingset_get_named(NULL, "Rotation");
+ pso->ks_scale= ANIM_builtin_keyingset_get_named(NULL, "Scaling");
+
+ /* return status is whether we've got all the data we were requested to get */
+ return 1;
+}
+
+/* exiting the operator - free data */
+static void pose_slide_exit (bContext *C, wmOperator *op)
+{
+ tPoseSlideOp *pso= op->customdata;
+
+ /* if data exists, clear its data and exit */
+ if (pso) {
+ tPChanFCurveLink *pfl, *pfln=NULL;
+
+ /* free the temp pchan links and their data */
+ for (pfl= pso->pfLinks.first; pfl; pfl= pfln) {
+ pfln= pfl->next;
+
+ /* free list of F-Curve reference links */
+ BLI_freelistN(&pfl->fcurves);
+
+ /* free pchan RNA Path */
+ MEM_freeN(pfl->pchan_path);
+
+ /* free link itself */
+ BLI_freelinkN(&pso->pfLinks, pfl);
+ }
+
+ /* free RB-BST for keyframes (if it contained data) */
+ BLI_dlrbTree_free(&pso->keys);
+
+ /* free data itself */
+ MEM_freeN(pso);
+ }
+
+ /* cleanup */
+ op->customdata= NULL;
+}
+
+/* ------------------------------------ */
+
+/* helper for apply() / reset() - refresh the data */
+static void pose_slide_refresh (bContext *C, tPoseSlideOp *pso)
+{
+ /* old optimize trick... this enforces to bypass the depgraph
+ * - note: code copied from transform_generics.c -> recalcData()
+ */
+ // FIXME: shouldn't this use the builtin stuff?
+ if ((pso->arm->flag & ARM_DELAYDEFORM)==0)
+ DAG_id_flush_update(&pso->ob->id, OB_RECALC_DATA); /* sets recalc flags */
+ else
+ where_is_pose(pso->scene, pso->ob);
+
+ /* note, notifier might evolve */
+ WM_event_add_notifier(C, NC_OBJECT|ND_POSE, pso->ob);
+ WM_event_add_notifier(C, NC_OBJECT|ND_TRANSFORM, NULL);
+}
+
+/* helper for apply() callabcks - find the next F-Curve with matching path... */
+static LinkData *find_next_fcurve_link (ListBase *fcuLinks, LinkData *prev, char *path)
+{
+ LinkData *first= (prev)? prev->next : (fcuLinks)? fcuLinks->first : NULL;
+ LinkData *ld;
+
+ /* check each link to see if the linked F-Curve has a matching path */
+ for (ld= first; ld; ld= ld->next) {
+ FCurve *fcu= (FCurve *)ld->data;
+
+ /* check if paths match */
+ if (strcmp(path, fcu->rna_path) == 0)
+ return ld;
+ }
+
+ /* none found */
+ return NULL;
+}
+
+/* helper for apply() - perform sliding for some 3-element vector */
+static void pose_slide_apply_vec3 (tPoseSlideOp *pso, tPChanFCurveLink *pfl, float vec[3], char *propName)
+{
+ LinkData *ld=NULL;
+ char *path=NULL;
+ float cframe;
+
+ /* get the path to use... */
+ path= BLI_sprintfN("%s.%s", pfl->pchan_path, propName);
+
+ /* get the current frame number */
+ cframe= (float)pso->cframe;
+
+ /* using this path, find each matching F-Curve for the variables we're interested in */
+ while ( (ld= find_next_fcurve_link(&pfl->fcurves, ld, path)) ) {
+ FCurve *fcu= (FCurve *)ld->data;
+ float sVal, eVal;
+ float w1, w2;
+ int ch;
+
+ /* get keyframe values for endpoint poses to blend with */
+ /* previous/start */
+ sVal= evaluate_fcurve(fcu, (float)pso->prevFrame);
+ /* next/end */
+ eVal= evaluate_fcurve(fcu, (float)pso->nextFrame);
+
+ /* get channel index */
+ ch= fcu->array_index;
+
+ /* calculate the relative weights of the endpoints */
+ if (pso->mode == POSESLIDE_BREAKDOWN) {
+ /* get weights from the percentage control */
+ w1= pso->percentage; /* this must come second */
+ w2= 1.0f - w1; /* this must come first */
+ }
+ else {
+ /* - these weights are derived from the relative distance of these
+ * poses from the current frame
+ * - they then get normalised so that they only sum up to 1
+ */
+ float wtot;
+
+ w1 = cframe - (float)pso->prevFrame;
+ w2 = (float)pso->nextFrame - cframe;
+
+ wtot = w1 + w2;
+ w1 = (w1/wtot);
+ w2 = (w2/wtot);
+ }
+
+ /* depending on the mode, calculate the new value
+ * - in all of these, the start+end values are multiplied by w2 and w1 (respectively),
+ * since multiplication in another order would decrease the value the current frame is closer to
+ */
+ switch (pso->mode) {
+ case POSESLIDE_PUSH: /* make the current pose more pronounced */
+ {
+ /* perform a weighted average here, favouring the middle pose
+ * - numerator should be larger than denominator to 'expand' the result
+ * - perform this weighting a number of times given by the percentage...
+ */
+ int iters= (int)ceil(10.0f*pso->percentage); // TODO: maybe a sensitivity ctrl on top of this is needed
+
+ while (iters-- > 0) {
+ vec[ch]= ( -((sVal * w2) + (eVal * w1)) + (vec[ch] * 6.0f) ) / 5.0f;
+ }
+ }
+ break;
+
+ case POSESLIDE_RELAX: /* make the current pose more like its surrounding ones */
+ {
+ /* perform a weighted average here, favouring the middle pose
+ * - numerator should be smaller than denominator to 'relax' the result
+ * - perform this weighting a number of times given by the percentage...
+ */
+ int iters= (int)ceil(10.0f*pso->percentage); // TODO: maybe a sensitivity ctrl on top of this is needed
+
+ while (iters-- > 0) {
+ vec[ch]= ( ((sVal * w2) + (eVal * w1)) + (vec[ch] * 5.0f) ) / 6.0f;
+ }
+ }
+ break;
+
+ case POSESLIDE_BREAKDOWN: /* make the current pose slide around between the endpoints */
+ {
+ /* perform simple linear interpolation - coefficient for start must come from pso->percentage... */
+ // TODO: make this use some kind of spline interpolation instead?
+ vec[ch]= ((sVal * w2) + (eVal * w1));
+ }
+ break;
+ }
+
+ }
+
+ /* free the temp path we got */
+ MEM_freeN(path);
+}
+
+/* helper for apply() - perform sliding for quaternion rotations (using quat blending) */
+static void pose_slide_apply_quat (tPoseSlideOp *pso, tPChanFCurveLink *pfl)
+{
+ FCurve *fcu_w=NULL, *fcu_x=NULL, *fcu_y=NULL, *fcu_z=NULL;
+ bPoseChannel *pchan= pfl->pchan;
+ LinkData *ld=NULL;
+ char *path=NULL;
+ float cframe;
+
+ /* get the path to use - this should be quaternion rotations only (needs care) */
+ path= BLI_sprintfN("%s.%s", pfl->pchan_path, "rotation");
+
+ /* get the current frame number */
+ cframe= (float)pso->cframe;
+
+ /* using this path, find each matching F-Curve for the variables we're interested in */
+ while ( (ld= find_next_fcurve_link(&pfl->fcurves, ld, path)) ) {
+ FCurve *fcu= (FCurve *)ld->data;
+
+ /* assign this F-Curve to one of the relevant pointers... */
+ switch (fcu->array_index) {
+ case 3: /* z */
+ fcu_z= fcu;
+ break;
+ case 2: /* y */
+ fcu_y= fcu;
+ break;
+ case 1: /* x */
+ fcu_x= fcu;
+ break;
+ case 0: /* w */
+ fcu_w= fcu;
+ break;
+ }
+ }
+
+ /* only if all channels exist, proceed */
+ if (fcu_w && fcu_x && fcu_y && fcu_z) {
+ float quat_prev[4], quat_next[4];
+
+ /* get 2 quats */
+ quat_prev[0] = evaluate_fcurve(fcu_w, pso->prevFrame);
+ quat_prev[1] = evaluate_fcurve(fcu_x, pso->prevFrame);
+ quat_prev[2] = evaluate_fcurve(fcu_y, pso->prevFrame);
+ quat_prev[3] = evaluate_fcurve(fcu_z, pso->prevFrame);
+
+ quat_next[0] = evaluate_fcurve(fcu_w, pso->nextFrame);
+ quat_next[1] = evaluate_fcurve(fcu_x, pso->nextFrame);
+ quat_next[2] = evaluate_fcurve(fcu_y, pso->nextFrame);
+ quat_next[3] = evaluate_fcurve(fcu_z, pso->nextFrame);
+
+ /* perform blending */
+ if (pso->mode == POSESLIDE_BREAKDOWN) {
+ /* just perform the interpol between quat_prev and quat_next using pso->percentage as a guide */
+ QuatInterpol(pchan->quat, quat_prev, quat_next, pso->percentage);
+ }
+ else {
+ float quat_interp[4], quat_orig[4];
+ int iters= (int)ceil(10.0f*pso->percentage); // TODO: maybe a sensitivity ctrl on top of this is needed
+
+ /* perform this blending several times until a satisfactory result is reached */
+ while (iters-- > 0) {
+ /* calculate the interpolation between the endpoints */
+ QuatInterpol(quat_interp, quat_prev, quat_next, (cframe-pso->prevFrame) / (pso->nextFrame-pso->prevFrame) );
+
+ /* make a copy of the original rotation */
+ QUATCOPY(quat_orig, pchan->quat);
+
+ /* tricky interpolations - mode-dependent blending between original and new */
+ if (pso->mode == POSESLIDE_RELAX) // xxx this was the original code, so should work fine
+ QuatInterpol(pchan->quat, quat_orig, quat_interp, 1.0f/6.0f);
+ else // I'm just guessing here...
+ QuatInterpol(pchan->quat, quat_orig, quat_interp, 6.0f/5.0f);
+ }
+ }
+ }
+
+ /* free the path now */
+ MEM_freeN(path);
+}
+
+/* apply() - perform the pose sliding based on weighting various poses */
+static void pose_slide_apply (bContext *C, wmOperator *op, tPoseSlideOp *pso)
+{
+ tPChanFCurveLink *pfl;
+
+ /* sanitise the frame ranges */
+ if (pso->prevFrame == pso->nextFrame) {
+ /* move out one step either side */
+ pso->prevFrame--;
+ pso->nextFrame++;
+ }
+
+ /* for each link, handle each set of transforms */
+ for (pfl= pso->pfLinks.first; pfl; pfl= pfl->next) {
+ /* valid transforms for each PoseChannel should have been noted already
+ * - sliding the pose should be a straightforward exercise for location+rotation,
+ * but rotations get more complicated since we may want to use quaternion blending
+ * for quaternions instead...
+ */
+ bPoseChannel *pchan= pfl->pchan;
+
+ if (pchan->flag & POSE_LOC) {
+ /* calculate these for the 'location' vector, and use location curves */
+ pose_slide_apply_vec3(pso, pfl, pchan->loc, "location");
+ }
+
+ if (pchan->flag & POSE_SIZE) {
+ /* calculate these for the 'scale' vector, and use scale curves */
+ pose_slide_apply_vec3(pso, pfl, pchan->size, "scale");
+ }
+
+ if (pchan->flag & POSE_ROT) {
+ /* everything depends on the rotation mode */
+ if (pchan->rotmode > 0) {
+ /* eulers - so calculate these for the 'eul' vector, and use euler_rotation curves */
+ pose_slide_apply_vec3(pso, pfl, pchan->eul, "rotation_euler");
+ }
+ else if (pchan->rotmode == ROT_MODE_AXISANGLE) {
+ // TODO: need to figure out how to do this!
+ }
+ else {
+ /* quaternions - use quaternion blending */
+ pose_slide_apply_quat(pso, pfl);
+ }
+ }
+ }
+
+ /* depsgraph updates + redraws */
+ pose_slide_refresh(C, pso);
+}
+
+/* perform autokeyframing after changes were made + confirmed */
+static void pose_slide_autoKeyframe (bContext *C, tPoseSlideOp *pso)
+{
+ /* insert keyframes as necessary if autokeyframing */
+ if (autokeyframe_cfra_can_key(pso->scene, &pso->ob->id)) {
+ bCommonKeySrc cks;
+ ListBase dsources = {&cks, &cks};
+ tPChanFCurveLink *pfl;
+
+ /* init common-key-source for use by KeyingSets */
+ memset(&cks, 0, sizeof(bCommonKeySrc));
+ cks.id= &pso->ob->id;
+
+ /* iterate over each pose-channel affected, applying the changes */
+ for (pfl= pso->pfLinks.first; pfl; pfl= pfl->next) {
+ bPoseChannel *pchan= pfl->pchan;
+ /* init cks for this PoseChannel, then use the relative KeyingSets to keyframe it */
+ cks.pchan= pchan;
+
+ /* insert keyframes */
+ if (pchan->flag & POSE_LOC)
+ modify_keyframes(C, &dsources, NULL, pso->ks_loc, MODIFYKEY_MODE_INSERT, (float)pso->cframe);
+ if (pchan->flag & POSE_ROT)
+ modify_keyframes(C, &dsources, NULL, pso->ks_rot, MODIFYKEY_MODE_INSERT, (float)pso->cframe);
+ if (pchan->flag & POSE_SIZE)
+ modify_keyframes(C, &dsources, NULL, pso->ks_scale, MODIFYKEY_MODE_INSERT, (float)pso->cframe);
+ }
+ }
+}
+
+/* reset changes made to current pose */
+static void pose_slide_reset (bContext *C, tPoseSlideOp *pso)
+{
+ tPChanFCurveLink *pfl;
+
+ /* iterate over each pose-channel affected, restoring all channels to their original values */
+ for (pfl= pso->pfLinks.first; pfl; pfl= pfl->next) {
+ bPoseChannel *pchan= pfl->pchan;
+
+ /* just copy all the values over regardless of whether they changed or not */
+ VECCOPY(pchan->loc, pfl->oldloc);
+ VECCOPY(pchan->eul, pfl->oldrot);
+ VECCOPY(pchan->size, pfl->oldscale);
+ QUATCOPY(pchan->quat, pfl->oldquat);
+ }
+}
+
+/* ------------------------------------ */
+
+/* common code for invoke() methods */
+static int pose_slide_invoke_common (bContext *C, wmOperator *op, tPoseSlideOp *pso)
+{
+ tPChanFCurveLink *pfl;
+ AnimData *adt= pso->ob->adt;
+ wmWindow *win= CTX_wm_window(C);
+
+ /* for each link, add all its keyframes to the search tree */
+ for (pfl= pso->pfLinks.first; pfl; pfl= pfl->next) {
+ LinkData *ld;
+
+ /* do this for each F-Curve */
+ for (ld= pfl->fcurves.first; ld; ld= ld->next) {
+ FCurve *fcu= (FCurve *)ld->data;
+ fcurve_to_keylist(adt, fcu, &pso->keys, NULL);
+ }
+ }
+
+ /* consolidate these keyframes, and figure out the nearest ones */
+ BLI_dlrbTree_linkedlist_sync(&pso->keys);
+
+ /* cancel if no keyframes found... */
+ if (pso->keys.root) {
+ ActKeyColumn *ak;
+
+ /* firstly, check if the current frame is a keyframe... */
+ ak= cfra_find_actkeycolumn(pso->keys.root, pso->cframe);
+
+ if (ak == NULL) {
+ /* current frame is not a keyframe, so search */
+ ActKeyColumn *pk= cfra_find_nearest_next_ak(pso->keys.root, pso->cframe, 0);
+ ActKeyColumn *nk= cfra_find_nearest_next_ak(pso->keys.root, pso->cframe, 1);
+
+ /* check if we found good keyframes */
+ if ((pk == nk) && (pk != NULL)) {
+ if (pk->cfra < pso->cframe)
+ nk= nk->next;
+ else if (nk->cfra > pso->cframe)
+ pk= pk->prev;
+ }
+
+ /* new set the frames */
+ /* prev frame */
+ pso->prevFrame= (pk)? (pk->cfra) : (pso->cframe - 1);
+ RNA_int_set(op->ptr, "prev_frame", pso->prevFrame);
+ /* next frame */
+ pso->nextFrame= (nk)? (nk->cfra) : (pso->cframe + 1);
+ RNA_int_set(op->ptr, "next_frame", pso->nextFrame);
+ }
+ else {
+ /* current frame itself is a keyframe, so just take keyframes on either side */
+ /* prev frame */
+ pso->prevFrame= (ak->prev)? (ak->prev->cfra) : (pso->cframe - 1);
+ RNA_int_set(op->ptr, "prev_frame", pso->prevFrame);
+ /* next frame */
+ pso->nextFrame= (ak->next)? (ak->next->cfra) : (pso->cframe + 1);
+ RNA_int_set(op->ptr, "next_frame", pso->nextFrame);
+ }
+ }
+ else {
+ BKE_report(op->reports, RPT_ERROR, "No keyframes to slide between.");
+ return OPERATOR_CANCELLED;
+ }
+
+ /* initial apply for operator... */
+ // TODO: need to calculate percentage for initial round too...
+ pose_slide_apply(C, op, pso);
+
+ /* depsgraph updates + redraws */
+ pose_slide_refresh(C, pso);
+
+ /* set cursor to indicate modal */
+ WM_cursor_modal(win, BC_EW_SCROLLCURSOR);
+
+ /* add a modal handler for this operator */
+ WM_event_add_modal_handler(C, op);
+ return OPERATOR_RUNNING_MODAL;
+}
+
+/* common code for modal() */
+static int pose_slide_modal (bContext *C, wmOperator *op, wmEvent *evt)
+{
+ tPoseSlideOp *pso= op->customdata;
+ wmWindow *win= CTX_wm_window(C);
+
+ switch (evt->type) {
+ case LEFTMOUSE: /* confirm */
+ {
+ /* return to normal cursor */
+ WM_cursor_restore(win);
+
+ /* insert keyframes as required... */
+ pose_slide_autoKeyframe(C, pso);
+ pose_slide_exit(C, op);
+
+ /* done! */
+ return OPERATOR_FINISHED;
+ }
+
+ case ESCKEY: /* cancel */
+ case RIGHTMOUSE:
+ {
+ /* return to normal cursor */
+ WM_cursor_restore(win);
+
+ /* reset transforms back to original state */
+ pose_slide_reset(C, pso);
+
+ /* depsgraph updates + redraws */
+ pose_slide_refresh(C, pso);
+
+ /* clean up temp data */
+ pose_slide_exit(C, op);
+
+ /* cancelled! */
+ return OPERATOR_CANCELLED;
+ }
+
+ case MOUSEMOVE: /* calculate new position */
+ {
+ /* calculate percentage based on position of mouse (we only use x-axis for now.
+ * since this is more conveninent for users to do), and store new percentage value
+ */
+ pso->percentage= (evt->x - pso->ar->winrct.xmin) / ((float)pso->ar->winx);
+ RNA_float_set(op->ptr, "percentage", pso->percentage);
+
+ /* reset transforms (to avoid accumulation errors) */
+ pose_slide_reset(C, pso);
+
+ /* apply... */
+ pose_slide_apply(C, op, pso);
+ }
+ break;
+
+ default: /* unhandled event (maybe it was some view manip? */
+ /* allow to pass through */
+ return OPERATOR_RUNNING_MODAL|OPERATOR_PASS_THROUGH;
+ }
+
+ /* still running... */
+ return OPERATOR_RUNNING_MODAL;
+}
+
+/* common code for cancel() */
+static int pose_slide_cancel (bContext *C, wmOperator *op)
+{
+ /* cleanup and done */
+ pose_slide_exit(C, op);
+ return OPERATOR_CANCELLED;
+}
+
+/* common code for exec() methods */
+static int pose_slide_exec_common (bContext *C, wmOperator *op, tPoseSlideOp *pso)
+{
+ /* settings should have been set up ok for applying, so just apply! */
+ pose_slide_apply(C, op, pso);
+
+ /* insert keyframes if needed */
+ pose_slide_autoKeyframe(C, pso);
+
+ /* cleanup and done */
+ pose_slide_exit(C, op);
+
+ return OPERATOR_FINISHED;
+}
+
+/* common code for defining RNA properties */
+static void pose_slide_opdef_properties (wmOperatorType *ot)
+{
+ RNA_def_int(ot->srna, "prev_frame", 0, MINAFRAME, MAXFRAME, "Previous Keyframe", "Frame number of keyframe immediately before the current frame.", 0, 50);
+ RNA_def_int(ot->srna, "next_frame", 0, MINAFRAME, MAXFRAME, "Next Keyframe", "Frame number of keyframe immediately after the current frame.", 0, 50);
+ RNA_def_float_percentage(ot->srna, "percentage", 0.5f, 0.0f, 1.0f, "Percentage", "Weighting factor for the sliding operation", 0.3, 0.7);
+}
+
+/* ------------------------------------ */
+
+/* invoke() - for 'push' mode */
+static int pose_slide_push_invoke (bContext *C, wmOperator *op, wmEvent *evt)
+{
+ tPoseSlideOp *pso;
+
+ /* initialise data */
+ if (pose_slide_init(C, op, POSESLIDE_PUSH) == 0) {
+ pose_slide_exit(C, op);
+ return OPERATOR_CANCELLED;
+ }
+ else
+ pso= op->customdata;
+
+ /* do common setup work */
+ return pose_slide_invoke_common(C, op, pso);
+}
+
+/* exec() - for push */
+static int pose_slide_push_exec (bContext *C, wmOperator *op)
+{
+ tPoseSlideOp *pso;
+
+ /* initialise data (from RNA-props) */
+ if (pose_slide_init(C, op, POSESLIDE_PUSH) == 0) {
+ pose_slide_exit(C, op);
+ return OPERATOR_CANCELLED;
+ }
+ else
+ pso= op->customdata;
+
+ /* do common exec work */
+ return pose_slide_exec_common(C, op, pso);
+}
+
+void POSE_OT_push (wmOperatorType *ot)
+{
+ /* identifiers */
+ ot->name= "Push Pose";
+ ot->idname= "POSE_OT_push";
+ ot->description= "Exaggerate the current pose";
+
+ /* callbacks */
+ ot->exec= pose_slide_push_exec;
+ ot->invoke= pose_slide_push_invoke;
+ ot->modal= pose_slide_modal;
+ ot->cancel= pose_slide_cancel;
+ ot->poll= ED_operator_posemode;
+
+ /* flags */
+ ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
+
+ /* Properties */
+ pose_slide_opdef_properties(ot);
+}
+
+/* ........................ */
+
+/* invoke() - for 'relax' mode */
+static int pose_slide_relax_invoke (bContext *C, wmOperator *op, wmEvent *evt)
+{
+ tPoseSlideOp *pso;
+
+ /* initialise data */
+ if (pose_slide_init(C, op, POSESLIDE_RELAX) == 0) {
+ pose_slide_exit(C, op);
+ return OPERATOR_CANCELLED;
+ }
+ else
+ pso= op->customdata;
+
+ /* do common setup work */
+ return pose_slide_invoke_common(C, op, pso);
+}
+
+/* exec() - for relax */
+static int pose_slide_relax_exec (bContext *C, wmOperator *op)
+{
+ tPoseSlideOp *pso;
+
+ /* initialise data (from RNA-props) */
+ if (pose_slide_init(C, op, POSESLIDE_RELAX) == 0) {
+ pose_slide_exit(C, op);
+ return OPERATOR_CANCELLED;
+ }
+ else
+ pso= op->customdata;
+
+ /* do common exec work */
+ return pose_slide_exec_common(C, op, pso);
+}
+
+void POSE_OT_relax (wmOperatorType *ot)
+{
+ /* identifiers */
+ ot->name= "Relax Pose";
+ ot->idname= "POSE_OT_relax";
+ ot->description= "Make the current pose more similar to its surrounding ones.";
+
+ /* callbacks */
+ ot->exec= pose_slide_relax_exec;
+ ot->invoke= pose_slide_relax_invoke;
+ ot->modal= pose_slide_modal;
+ ot->cancel= pose_slide_cancel;
+ ot->poll= ED_operator_posemode;
+
+ /* flags */
+ ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
+
+ /* Properties */
+ pose_slide_opdef_properties(ot);
+}
+
+/* ........................ */
+
+/* invoke() - for 'breakdown' mode */
+static int pose_slide_breakdown_invoke (bContext *C, wmOperator *op, wmEvent *evt)
+{
+ tPoseSlideOp *pso;
+
+ /* initialise data */
+ if (pose_slide_init(C, op, POSESLIDE_BREAKDOWN) == 0) {
+ pose_slide_exit(C, op);
+ return OPERATOR_CANCELLED;
+ }
+ else
+ pso= op->customdata;
+
+ /* do common setup work */
+ return pose_slide_invoke_common(C, op, pso);
+}
+
+/* exec() - for breakdown */
+static int pose_slide_breakdown_exec (bContext *C, wmOperator *op)
+{
+ tPoseSlideOp *pso;
+
+ /* initialise data (from RNA-props) */
+ if (pose_slide_init(C, op, POSESLIDE_BREAKDOWN) == 0) {
+ pose_slide_exit(C, op);
+ return OPERATOR_CANCELLED;
+ }
+ else
+ pso= op->customdata;
+
+ /* do common exec work */
+ return pose_slide_exec_common(C, op, pso);
+}
+
+void POSE_OT_breakdown (wmOperatorType *ot)
+{
+ /* identifiers */
+ ot->name= "Pose Breakdowner";
+ ot->idname= "POSE_OT_breakdown";
+ ot->description= "Create a suitable breakdown pose on the current frame.";
+
+ /* callbacks */
+ ot->exec= pose_slide_breakdown_exec;
+ ot->invoke= pose_slide_breakdown_invoke;
+ ot->modal= pose_slide_modal;
+ ot->cancel= pose_slide_cancel;
+ ot->poll= ED_operator_posemode;
+
+ /* flags */
+ ot->flag= OPTYPE_REGISTER|OPTYPE_UNDO|OPTYPE_BLOCKING;
+
+ /* Properties */
+ pose_slide_opdef_properties(ot);
+}
+
+/* **************************************************** */