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blender-archive/source/blender/blenkernel/intern/action.c

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/**
* $Id$
*
* ***** 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) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* Contributor(s): Full recode, Ton Roosendaal, Crete 2005
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <string.h>
#include <math.h>
#include <stdlib.h> /* for NULL */
#include "MEM_guardedalloc.h"
#include "DNA_action_types.h"
#include "DNA_armature_types.h"
#include "DNA_constraint_types.h"
#include "DNA_curve_types.h"
#include "DNA_ipo_types.h"
#include "DNA_key_types.h"
#include "DNA_nla_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "BKE_action.h"
#include "BKE_anim.h"
#include "BKE_armature.h"
#include "BKE_blender.h"
#include "BKE_constraint.h"
#include "BKE_displist.h"
#include "BKE_global.h"
#include "BKE_ipo.h"
#include "BKE_key.h"
#include "BKE_lattice.h"
#include "BKE_library.h"
#include "BKE_main.h"
#include "BKE_object.h"
#include "BKE_utildefines.h"
#include "BLI_arithb.h"
#include "BLI_blenlib.h"
#include "nla.h"
/* *********************** NOTE ON POSE AND ACTION **********************
- Pose is the local (object level) component of armature. The current
object pose is saved in files, and (will be) is presorted for dependency
- Actions have fewer (or other) channels, and write data to a Pose
- Currently ob->pose data is controlled in where_is_pose only. The (recalc)
event system takes care of calling that
- The NLA system (here too) uses Poses as interpolation format for Actions
- Therefore we assume poses to be static, and duplicates of poses have channels in
same order, for quick interpolation reasons
****************************** (ton) ************************************ */
/* ***************** Library data level operations on action ************** */
static void make_local_action_channels(bAction *act)
{
bActionChannel *chan;
bConstraintChannel *conchan;
for (chan=act->chanbase.first; chan; chan=chan->next) {
if(chan->ipo) {
if(chan->ipo->id.us==1) {
chan->ipo->id.lib= NULL;
chan->ipo->id.flag= LIB_LOCAL;
new_id(0, (ID *)chan->ipo, 0);
}
else {
chan->ipo= copy_ipo(chan->ipo);
}
}
for (conchan=chan->constraintChannels.first; conchan; conchan=conchan->next) {
if(conchan->ipo) {
if(conchan->ipo->id.us==1) {
conchan->ipo->id.lib= NULL;
conchan->ipo->id.flag= LIB_LOCAL;
new_id(0, (ID *)conchan->ipo, 0);
}
else {
conchan->ipo= copy_ipo(conchan->ipo);
}
}
}
}
}
void make_local_action(bAction *act)
{
Object *ob;
bAction *actn;
int local=0, lib=0;
if(act->id.lib==0) return;
if(act->id.us==1) {
act->id.lib= 0;
act->id.flag= LIB_LOCAL;
make_local_action_channels(act);
new_id(0, (ID *)act, 0);
return;
}
ob= G.main->object.first;
while(ob) {
if(ob->action==act) {
if(ob->id.lib) lib= 1;
else local= 1;
}
ob= ob->id.next;
}
if(local && lib==0) {
act->id.lib= 0;
act->id.flag= LIB_LOCAL;
make_local_action_channels(act);
new_id(0, (ID *)act, 0);
}
else if(local && lib) {
actn= copy_action(act);
actn->id.us= 0;
ob= G.main->object.first;
while(ob) {
if(ob->action==act) {
if(ob->id.lib==0) {
ob->action = actn;
actn->id.us++;
act->id.us--;
}
}
ob= ob->id.next;
}
}
}
void free_action (bAction *act)
{
bActionChannel *chan;
/* Free channels */
for (chan=act->chanbase.first; chan; chan=chan->next) {
if (chan->ipo)
chan->ipo->id.us--;
free_constraint_channels(&chan->constraintChannels);
}
if (act->chanbase.first)
BLI_freelistN(&act->chanbase);
/* Free groups */
if (act->groups.first)
BLI_freelistN(&act->groups);
/* Free pose-references (aka local markers) */
if (act->markers.first)
BLI_freelistN(&act->markers);
}
bAction *copy_action (bAction *src)
{
bAction *dst = NULL;
bActionChannel *dchan, *schan;
bActionGroup *dgrp, *sgrp;
if (!src) return NULL;
dst= copy_libblock(src);
duplicatelist(&(dst->chanbase), &(src->chanbase));
duplicatelist(&(dst->groups), &(src->groups));
duplicatelist(&(dst->markers), &(src->markers));
for (dchan=dst->chanbase.first, schan=src->chanbase.first; dchan; dchan=dchan->next, schan=schan->next) {
for (dgrp=dst->groups.first, sgrp=src->groups.first; dgrp && sgrp; dgrp=dgrp->next, sgrp=sgrp->next) {
if (dchan->grp == sgrp) {
dchan->grp= dgrp;
if (dgrp->channels.first == schan)
dgrp->channels.first= dchan;
if (dgrp->channels.last == schan)
dgrp->channels.last= dchan;
break;
}
}
dchan->ipo = copy_ipo(dchan->ipo);
copy_constraint_channels(&dchan->constraintChannels, &schan->constraintChannels);
}
dst->id.flag |= LIB_FAKEUSER;
dst->id.us++;
return dst;
}
/* ************************ Pose channels *************** */
/* usually used within a loop, so we got a N^2 slowdown */
bPoseChannel *get_pose_channel(const bPose *pose, const char *name)
{
bPoseChannel *chan;
if(pose==NULL) return NULL;
for (chan=pose->chanbase.first; chan; chan=chan->next) {
if(chan->name[0] == name[0])
if (!strcmp (chan->name, name))
return chan;
}
return NULL;
}
/* Use with care, not on Armature poses but for temporal ones */
/* (currently used for action constraints and in rebuild_pose) */
bPoseChannel *verify_pose_channel(bPose* pose, const char* name)
{
bPoseChannel *chan;
if (!pose) {
return NULL;
}
/* See if this channel exists */
for (chan=pose->chanbase.first; chan; chan=chan->next) {
if (!strcmp (name, chan->name))
return chan;
}
/* If not, create it and add it */
chan = MEM_callocN(sizeof(bPoseChannel), "verifyPoseChannel");
strncpy (chan->name, name, 31);
/* init vars to prevent math errors */
chan->quat[0] = 1.0F;
chan->size[0] = chan->size[1] = chan->size[2] = 1.0F;
chan->limitmin[0]= chan->limitmin[1]= chan->limitmin[2]= -180.0f;
chan->limitmax[0]= chan->limitmax[1]= chan->limitmax[2]= 180.0f;
chan->stiffness[0]= chan->stiffness[1]= chan->stiffness[2]= 0.0f;
Mat4One(chan->constinv);
BLI_addtail (&pose->chanbase, chan);
return chan;
}
/* dst should be freed already, makes entire duplicate */
void copy_pose(bPose **dst, bPose *src, int copycon)
{
bPose *outPose;
bPoseChannel *pchan;
ListBase listb;
if (!src){
*dst=NULL;
return;
}
outPose= MEM_callocN(sizeof(bPose), "pose");
duplicatelist(&outPose->chanbase, &src->chanbase);
if (copycon) {
for (pchan=outPose->chanbase.first; pchan; pchan=pchan->next) {
copy_constraints(&listb, &pchan->constraints); // copy_constraints NULLs listb
pchan->constraints= listb;
pchan->path= NULL;
}
}
*dst=outPose;
}
void free_pose_channels(bPose *pose)
{
bPoseChannel *pchan;
if (pose->chanbase.first) {
for (pchan = pose->chanbase.first; pchan; pchan=pchan->next){
if (pchan->path)
MEM_freeN(pchan->path);
free_constraints(&pchan->constraints);
}
BLI_freelistN(&pose->chanbase);
}
}
void free_pose(bPose *pose)
{
if (pose) {
/* free pose-channels */
free_pose_channels(pose);
/* free pose-groups */
if (pose->agroups.first)
BLI_freelistN(&pose->agroups);
/* free pose */
MEM_freeN(pose);
}
}
static void copy_pose_channel_data(bPoseChannel *pchan, const bPoseChannel *chan)
{
bConstraint *pcon, *con;
VECCOPY(pchan->loc, chan->loc);
VECCOPY(pchan->size, chan->size);
QUATCOPY(pchan->quat, chan->quat);
pchan->flag= chan->flag;
con= chan->constraints.first;
for(pcon= pchan->constraints.first; pcon; pcon= pcon->next) {
pcon->enforce= con->enforce;
pcon->headtail= con->headtail;
}
}
/* checks for IK constraint, and also for Follow-Path constraint.
* can do more constraints flags later
*/
/* pose should be entirely OK */
void update_pose_constraint_flags(bPose *pose)
{
bPoseChannel *pchan, *parchan;
bConstraint *con;
/* clear */
for (pchan= pose->chanbase.first; pchan; pchan= pchan->next) {
pchan->constflag= 0;
}
pose->flag &= ~POSE_CONSTRAINTS_TIMEDEPEND;
/* detect */
for (pchan= pose->chanbase.first; pchan; pchan=pchan->next) {
for (con= pchan->constraints.first; con; con= con->next) {
if (con->type==CONSTRAINT_TYPE_KINEMATIC) {
bKinematicConstraint *data = (bKinematicConstraint*)con->data;
pchan->constflag |= PCHAN_HAS_IK;
if(data->tar==NULL || (data->tar->type==OB_ARMATURE && data->subtarget[0]==0))
pchan->constflag |= PCHAN_HAS_TARGET;
/* negative rootbone = recalc rootbone index. used in do_versions */
if(data->rootbone<0) {
data->rootbone= 0;
if(data->flag & CONSTRAINT_IK_TIP) parchan= pchan;
else parchan= pchan->parent;
while(parchan) {
data->rootbone++;
if((parchan->bone->flag & BONE_CONNECTED)==0)
break;
parchan= parchan->parent;
}
}
}
else if (con->type == CONSTRAINT_TYPE_FOLLOWPATH) {
bFollowPathConstraint *data= (bFollowPathConstraint *)con->data;
/* for drawing constraint colors when color set allows this */
pchan->constflag |= PCHAN_HAS_CONST;
/* if we have a valid target, make sure that this will get updated on frame-change
* (needed for when there is no anim-data for this pose)
*/
if ((data->tar) && (data->tar->type==OB_CURVE))
pose->flag |= POSE_CONSTRAINTS_TIMEDEPEND;
}
else
pchan->constflag |= PCHAN_HAS_CONST;
}
}
}
/* Clears all BONE_UNKEYED flags for every pose channel in every pose
* This should only be called on frame changing, when it is acceptable to
* do this. Otherwise, these flags should not get cleared as poses may get lost.
*/
void framechange_poses_clear_unkeyed(void)
{
Object *ob;
bPose *pose;
bPoseChannel *pchan;
/* This needs to be done for each object that has a pose */
// TODO: proxies may/may not be correctly handled here... (this needs checking)
for (ob= G.main->object.first; ob; ob= ob->id.next) {
/* we only need to do this on objects with a pose */
if ( (pose= ob->pose) ) {
for (pchan= pose->chanbase.first; pchan; pchan= pchan->next) {
if (pchan->bone)
pchan->bone->flag &= ~BONE_UNKEYED;
}
}
}
}
/* ************************ END Pose channels *************** */
/* ************************ Action channels *************** */
bActionChannel *get_action_channel(bAction *act, const char *name)
{
bActionChannel *chan;
if (!act || !name)
return NULL;
for (chan = act->chanbase.first; chan; chan=chan->next) {
if (!strcmp (chan->name, name))
return chan;
}
return NULL;
}
/* returns existing channel, or adds new one. In latter case it doesnt activate it, context is required for that */
bActionChannel *verify_action_channel(bAction *act, const char *name)
{
bActionChannel *chan;
chan= get_action_channel(act, name);
if (chan == NULL) {
chan = MEM_callocN (sizeof(bActionChannel), "actionChannel");
strncpy(chan->name, name, 31);
BLI_addtail(&act->chanbase, chan);
}
return chan;
}
/* ************** time ****************** */
static bActionStrip *get_active_strip(Object *ob)
{
bActionStrip *strip;
if(ob->action==NULL)
return NULL;
for (strip=ob->nlastrips.first; strip; strip=strip->next)
if(strip->flag & ACTSTRIP_ACTIVE)
break;
if(strip && strip->act==ob->action)
return strip;
return NULL;
}
/* non clipped mapping of strip */
static float get_actionstrip_frame(bActionStrip *strip, float cframe, int invert)
{
float length, actlength, repeat, scale;
if(strip->repeat == 0.0f) strip->repeat = 1.0f;
repeat = (strip->flag & ACTSTRIP_USESTRIDE) ? (1.0f) : (strip->repeat);
if(strip->scale == 0.0f) strip->scale= 1.0f;
scale = abs(strip->scale); /* scale must be positive (for now) */
actlength = strip->actend-strip->actstart;
if (actlength == 0.0f) actlength = 1.0f;
length = repeat * scale * actlength;
/* invert = convert action-strip time to global time */
if (invert)
return length*(cframe - strip->actstart)/(repeat*actlength) + strip->start;
else
return repeat*actlength*(cframe - strip->start)/length + strip->actstart;
}
/* if the conditions match, it converts current time to strip time */
float get_action_frame(Object *ob, float cframe)
{
bActionStrip *strip= get_active_strip(ob);
if(strip)
return get_actionstrip_frame(strip, cframe, 0);
return cframe;
}
/* inverted, strip time to current time */
float get_action_frame_inv(Object *ob, float cframe)
{
bActionStrip *strip= get_active_strip(ob);
if(strip)
return get_actionstrip_frame(strip, cframe, 1);
return cframe;
}
/* ************************ Blending with NLA *************** */
static void blend_pose_strides(bPose *dst, bPose *src, float srcweight, short mode)
{
float dstweight;
switch (mode){
case ACTSTRIPMODE_BLEND:
dstweight = 1.0F - srcweight;
break;
case ACTSTRIPMODE_ADD:
dstweight = 1.0F;
break;
default :
dstweight = 1.0F;
}
VecLerpf(dst->stride_offset, dst->stride_offset, src->stride_offset, srcweight);
}
/*
bone matching diagram, strips A and B
.------------------------.
| A |
'------------------------'
. . b2
. .-------------v----------.
. | B . |
. '------------------------'
. . .
. . .
offset: . 0 . A-B . A-b2+B
. . .
*/
static void blend_pose_offset_bone(bActionStrip *strip, bPose *dst, bPose *src, float srcweight, short mode)
{
/* matching offset bones */
/* take dst offset, and put src on on that location */
if(strip->offs_bone[0]==0)
return;
/* are we also blending with matching bones? */
if(strip->prev && strip->start>=strip->prev->start) {
bPoseChannel *dpchan= get_pose_channel(dst, strip->offs_bone);
if(dpchan) {
bPoseChannel *spchan= get_pose_channel(src, strip->offs_bone);
if(spchan) {
float vec[3];
/* dst->ctime has the internal strip->prev action time */
/* map this time to nla time */
float ctime= get_actionstrip_frame(strip, src->ctime, 1);
if( ctime > strip->prev->end) {
bActionChannel *achan;
/* add src to dest, minus the position of src on strip->prev->end */
ctime= get_actionstrip_frame(strip, strip->prev->end, 0);
achan= get_action_channel(strip->act, strip->offs_bone);
if(achan && achan->ipo) {
bPoseChannel pchan;
/* Evaluates and sets the internal ipo value */
calc_ipo(achan->ipo, ctime);
/* This call also sets the pchan flags */
execute_action_ipo(achan, &pchan);
/* store offset that moves src to location of pchan */
VecSubf(vec, dpchan->loc, pchan.loc);
Mat4Mul3Vecfl(dpchan->bone->arm_mat, vec);
}
}
else {
/* store offset that moves src to location of dst */
VecSubf(vec, dpchan->loc, spchan->loc);
Mat4Mul3Vecfl(dpchan->bone->arm_mat, vec);
}
/* if blending, we only add with factor scrweight */
VecMulf(vec, srcweight);
VecAddf(dst->cyclic_offset, dst->cyclic_offset, vec);
}
}
}
VecAddf(dst->cyclic_offset, dst->cyclic_offset, src->cyclic_offset);
}
/* Only allowed for Poses with identical channels */
void blend_poses(bPose *dst, bPose *src, float srcweight, short mode)
{
bPoseChannel *dchan;
const bPoseChannel *schan;
bConstraint *dcon, *scon;
float dquat[4], squat[4];
float dstweight;
int i;
switch (mode){
case ACTSTRIPMODE_BLEND:
dstweight = 1.0F - srcweight;
break;
case ACTSTRIPMODE_ADD:
dstweight = 1.0F;
break;
default :
dstweight = 1.0F;
}
schan= src->chanbase.first;
for (dchan = dst->chanbase.first; dchan; dchan=dchan->next, schan= schan->next){
if (schan->flag & (POSE_ROT|POSE_LOC|POSE_SIZE)) {
/* replaced quat->matrix->quat conversion with decent quaternion interpol (ton) */
/* Do the transformation blend */
if (schan->flag & POSE_ROT) {
QUATCOPY(dquat, dchan->quat);
QUATCOPY(squat, schan->quat);
if(mode==ACTSTRIPMODE_BLEND)
QuatInterpol(dchan->quat, dquat, squat, srcweight);
else {
QuatMulFac(squat, srcweight);
QuatMul(dchan->quat, dquat, squat);
}
NormalQuat (dchan->quat);
}
for (i=0; i<3; i++){
if (schan->flag & POSE_LOC)
dchan->loc[i] = (dchan->loc[i]*dstweight) + (schan->loc[i]*srcweight);
if (schan->flag & POSE_SIZE)
dchan->size[i] = 1.0f + ((dchan->size[i]-1.0f)*dstweight) + ((schan->size[i]-1.0f)*srcweight);
}
dchan->flag |= schan->flag;
}
for(dcon= dchan->constraints.first, scon= schan->constraints.first; dcon && scon; dcon= dcon->next, scon= scon->next) {
/* no 'add' option for constraint blending */
dcon->enforce= dcon->enforce*(1.0f-srcweight) + scon->enforce*srcweight;
}
}
/* this pose is now in src time */
dst->ctime= src->ctime;
}
void calc_action_range(const bAction *act, float *start, float *end, int incl_hidden)
{
const bActionChannel *chan;
const bConstraintChannel *conchan;
const IpoCurve *icu;
float min=999999999.0f, max=-999999999.0;
int foundvert=0;
if(act) {
for (chan=act->chanbase.first; chan; chan=chan->next) {
if(incl_hidden || (chan->flag & ACHAN_HIDDEN)==0) {
if(chan->ipo) {
for (icu=chan->ipo->curve.first; icu; icu=icu->next) {
if(icu->totvert) {
min= MIN2 (min, icu->bezt[0].vec[1][0]);
max= MAX2 (max, icu->bezt[icu->totvert-1].vec[1][0]);
foundvert=1;
}
}
}
for (conchan=chan->constraintChannels.first; conchan; conchan=conchan->next) {
if(conchan->ipo) {
for (icu=conchan->ipo->curve.first; icu; icu=icu->next) {
if(icu->totvert) {
min= MIN2 (min, icu->bezt[0].vec[1][0]);
max= MAX2 (max, icu->bezt[icu->totvert-1].vec[1][0]);
foundvert=1;
}
}
}
}
}
}
}
if (foundvert) {
if(min==max) max+= 1.0f;
*start= min;
*end= max;
}
else {
*start= 0.0f;
*end= 1.0f;
}
}
/* Copy the data from the action-pose (src) into the pose */
/* both args are assumed to be valid */
/* exported to game engine */
void extract_pose_from_pose(bPose *pose, const bPose *src)
{
const bPoseChannel *schan;
bPoseChannel *pchan= pose->chanbase.first;
for (schan=src->chanbase.first; schan; schan=schan->next, pchan= pchan->next) {
copy_pose_channel_data(pchan, schan);
}
}
/* Pose should exist, can have any number of channels too (used for constraint) */
void extract_pose_from_action(bPose *pose, bAction *act, float ctime)
{
bActionChannel *achan;
bPoseChannel *pchan;
Ipo *ipo;
if (!act)
return;
if (!pose)
return;
/* Copy the data from the action into the pose */
for (pchan= pose->chanbase.first; pchan; pchan=pchan->next) {
/* skip this pose channel if it has been tagged as having unkeyed poses */
if ((pchan->bone) && (pchan->bone->flag & BONE_UNKEYED))
continue;
/* get action channel and clear pchan-transform flags */
achan= get_action_channel(act, pchan->name);
pchan->flag &= ~(POSE_LOC|POSE_ROT|POSE_SIZE);
if (achan) {
ipo = achan->ipo;
if (ipo) {
/* Evaluates and sets the internal ipo value */
calc_ipo(ipo, ctime);
/* This call also sets the pchan flags */
execute_action_ipo(achan, pchan);
}
/* 0 = do all ipos, not only drivers */
do_constraint_channels(&pchan->constraints, &achan->constraintChannels, ctime, 0);
}
}
pose->ctime= ctime; /* used for cyclic offset matching */
}
/* for do_all_pose_actions, clears the pose. Now also exported for proxy and tools */
void rest_pose(bPose *pose)
{
bPoseChannel *pchan;
int i;
if (!pose)
return;
memset(pose->stride_offset, 0, sizeof(pose->stride_offset));
memset(pose->cyclic_offset, 0, sizeof(pose->cyclic_offset));
for (pchan=pose->chanbase.first; pchan; pchan= pchan->next){
for (i=0; i<3; i++) {
pchan->loc[i]= 0.0f;
pchan->quat[i+1]= 0.0f;
pchan->size[i]= 1.0f;
}
pchan->quat[0]= 1.0f;
pchan->flag &= ~(POSE_LOC|POSE_ROT|POSE_SIZE);
}
}
/* both poses should be in sync */
void copy_pose_result(bPose *to, bPose *from)
{
bPoseChannel *pchanto, *pchanfrom;
if(to==NULL || from==NULL) {
printf("pose result copy error\n"); // debug temp
return;
}
for(pchanfrom= from->chanbase.first; pchanfrom; pchanfrom= pchanfrom->next) {
pchanto= get_pose_channel(to, pchanfrom->name);
if(pchanto) {
Mat4CpyMat4(pchanto->pose_mat, pchanfrom->pose_mat);
Mat4CpyMat4(pchanto->chan_mat, pchanfrom->chan_mat);
/* used for local constraints */
VECCOPY(pchanto->loc, pchanfrom->loc);
QUATCOPY(pchanto->quat, pchanfrom->quat);
VECCOPY(pchanto->size, pchanfrom->size);
VECCOPY(pchanto->pose_head, pchanfrom->pose_head);
VECCOPY(pchanto->pose_tail, pchanfrom->pose_tail);
pchanto->flag= pchanfrom->flag;
}
}
}
/* ********** NLA with non-poses works with ipo channels ********** */
typedef struct NlaIpoChannel {
struct NlaIpoChannel *next, *prev;
float val;
void *poin;
int type;
} NlaIpoChannel;
static void extract_ipochannels_from_action(ListBase *lb, ID *id, bAction *act, char *name, float ctime)
{
bActionChannel *achan= get_action_channel(act, name);
IpoCurve *icu;
NlaIpoChannel *nic;
if(achan==NULL) return;
if(achan->ipo) {
calc_ipo(achan->ipo, ctime);
for(icu= achan->ipo->curve.first; icu; icu= icu->next) {
/* skip IPO_BITS, is for layers and cannot be blended */
if(icu->vartype != IPO_BITS) {
nic= MEM_callocN(sizeof(NlaIpoChannel), "NlaIpoChannel");
BLI_addtail(lb, nic);
nic->val= icu->curval;
nic->poin= get_ipo_poin(id, icu, &nic->type);
}
}
}
/* constraint channels only for objects */
if(GS(id->name)==ID_OB) {
Object *ob= (Object *)id;
bConstraint *con;
bConstraintChannel *conchan;
for (con=ob->constraints.first; con; con=con->next) {
conchan = get_constraint_channel(&achan->constraintChannels, con->name);
if(conchan && conchan->ipo) {
calc_ipo(conchan->ipo, ctime);
icu= conchan->ipo->curve.first; // only one ipo now
if(icu) {
nic= MEM_callocN(sizeof(NlaIpoChannel), "NlaIpoChannel constr");
BLI_addtail(lb, nic);
nic->val= icu->curval;
nic->poin= &con->enforce;
nic->type= IPO_FLOAT;
}
}
}
}
}
static NlaIpoChannel *find_nla_ipochannel(ListBase *lb, void *poin)
{
NlaIpoChannel *nic;
if(poin) {
for(nic= lb->first; nic; nic= nic->next) {
if(nic->poin==poin)
return nic;
}
}
return NULL;
}
static void blend_ipochannels(ListBase *dst, ListBase *src, float srcweight, int mode)
{
NlaIpoChannel *snic, *dnic, *next;
float dstweight;
switch (mode){
case ACTSTRIPMODE_BLEND:
dstweight = 1.0F - srcweight;
break;
case ACTSTRIPMODE_ADD:
dstweight = 1.0F;
break;
default :
dstweight = 1.0F;
}
for(snic= src->first; snic; snic= next) {
next= snic->next;
dnic= find_nla_ipochannel(dst, snic->poin);
if(dnic==NULL) {
/* remove from src list, and insert in dest */
BLI_remlink(src, snic);
BLI_addtail(dst, snic);
}
else {
/* we do the blend */
dnic->val= dstweight*dnic->val + srcweight*snic->val;
}
}
}
static void execute_ipochannels(ListBase *lb)
{
NlaIpoChannel *nic;
for(nic= lb->first; nic; nic= nic->next) {
if(nic->poin) {
write_ipo_poin(nic->poin, nic->type, nic->val);
}
}
}
/* nla timing */
/* this now only used for repeating cycles, to enable fields and blur. */
/* the whole time control in blender needs serious thinking... */
static float nla_time(float cfra, float unit)
{
extern float bluroffs; // bad construct, borrowed from object.c for now
extern float fieldoffs;
/* motion blur & fields */
cfra+= unit*(bluroffs+fieldoffs);
/* global time */
cfra*= G.scene->r.framelen;
/* decide later... */
// if(no_speed_curve==0) if(ob && ob->ipo) cfra= calc_ipo_time(ob->ipo, cfra);
return cfra;
}
/* added "sizecorr" here, to allow armatures to be scaled and still have striding.
Only works for uniform scaling. In general I'd advise against scaling armatures ever though! (ton)
*/
static float stridechannel_frame(Object *ob, float sizecorr, bActionStrip *strip, Path *path, float pathdist, float *stride_offset)
{
bAction *act= strip->act;
char *name= strip->stridechannel;
bActionChannel *achan= get_action_channel(act, name);
int stride_axis= strip->stride_axis;
if(achan && achan->ipo) {
IpoCurve *icu= NULL;
float minx=0.0f, maxx=0.0f, miny=0.0f, maxy=0.0f;
int foundvert= 0;
if(stride_axis==0) stride_axis= AC_LOC_X;
else if(stride_axis==1) stride_axis= AC_LOC_Y;
else stride_axis= AC_LOC_Z;
/* calculate the min/max */
for (icu=achan->ipo->curve.first; icu; icu=icu->next) {
if(icu->adrcode==stride_axis) {
if(icu->totvert>1) {
foundvert= 1;
minx= icu->bezt[0].vec[1][0];
maxx= icu->bezt[icu->totvert-1].vec[1][0];
miny= icu->bezt[0].vec[1][1];
maxy= icu->bezt[icu->totvert-1].vec[1][1];
}
break;
}
}
if(foundvert && miny!=maxy) {
float stridelen= sizecorr*fabs(maxy-miny), striptime;
float actiondist, pdist, pdistNewNormalized, offs;
float vec1[4], vec2[4], dir[3];
/* internal cycling, actoffs is in frames */
offs= stridelen*strip->actoffs/(maxx-minx);
/* amount path moves object */
pdist = (float)fmod (pathdist+offs, stridelen);
striptime= pdist/stridelen;
/* amount stride bone moves */
actiondist= sizecorr*eval_icu(icu, minx + striptime*(maxx-minx)) - miny;
pdist = fabs(actiondist) - pdist;
pdistNewNormalized = (pathdist+pdist)/path->totdist;
/* now we need to go pdist further (or less) on cu path */
where_on_path(ob, (pathdist)/path->totdist, vec1, dir); /* vec needs size 4 */
if (pdistNewNormalized <= 1) {
// search for correction in positive path-direction
where_on_path(ob, pdistNewNormalized, vec2, dir); /* vec needs size 4 */
VecSubf(stride_offset, vec2, vec1);
}
else {
// we reached the end of the path, search backwards instead
where_on_path(ob, (pathdist-pdist)/path->totdist, vec2, dir); /* vec needs size 4 */
VecSubf(stride_offset, vec1, vec2);
}
Mat4Mul3Vecfl(ob->obmat, stride_offset);
return striptime;
}
}
return 0.0f;
}
static void cyclic_offs_bone(Object *ob, bPose *pose, bActionStrip *strip, float time)
{
/* only called when strip has cyclic, so >= 1.0f works... */
if(time >= 1.0f) {
bActionChannel *achan= get_action_channel(strip->act, strip->offs_bone);
if(achan && achan->ipo) {
IpoCurve *icu= NULL;
Bone *bone;
float min[3]={0.0f, 0.0f, 0.0f}, max[3]={0.0f, 0.0f, 0.0f};
int index=0, foundvert= 0;
/* calculate the min/max */
for (icu=achan->ipo->curve.first; icu; icu=icu->next) {
if(icu->totvert>1) {
if(icu->adrcode==AC_LOC_X)
index= 0;
else if(icu->adrcode==AC_LOC_Y)
index= 1;
else if(icu->adrcode==AC_LOC_Z)
index= 2;
else
continue;
foundvert= 1;
min[index]= icu->bezt[0].vec[1][1];
max[index]= icu->bezt[icu->totvert-1].vec[1][1];
}
}
if(foundvert) {
/* bring it into armature space */
VecSubf(min, max, min);
bone= get_named_bone(ob->data, strip->offs_bone); /* weak */
if(bone) {
Mat4Mul3Vecfl(bone->arm_mat, min);
/* dominant motion, cyclic_offset was cleared in rest_pose */
if (strip->flag & (ACTSTRIP_CYCLIC_USEX | ACTSTRIP_CYCLIC_USEY | ACTSTRIP_CYCLIC_USEZ)) {
if (strip->flag & ACTSTRIP_CYCLIC_USEX) pose->cyclic_offset[0]= time*min[0];
if (strip->flag & ACTSTRIP_CYCLIC_USEY) pose->cyclic_offset[1]= time*min[1];
if (strip->flag & ACTSTRIP_CYCLIC_USEZ) pose->cyclic_offset[2]= time*min[2];
} else {
if( fabs(min[0]) >= fabs(min[1]) && fabs(min[0]) >= fabs(min[2]))
pose->cyclic_offset[0]= time*min[0];
else if( fabs(min[1]) >= fabs(min[0]) && fabs(min[1]) >= fabs(min[2]))
pose->cyclic_offset[1]= time*min[1];
else
pose->cyclic_offset[2]= time*min[2];
}
}
}
}
}
}
/* simple case for now; only the curve path with constraint value > 0.5 */
/* blending we might do later... */
static Object *get_parent_path(Object *ob)
{
bConstraint *con;
if(ob->parent && ob->parent->type==OB_CURVE)
return ob->parent;
for (con = ob->constraints.first; con; con=con->next) {
if(con->type==CONSTRAINT_TYPE_FOLLOWPATH) {
if(con->enforce>0.5f) {
bFollowPathConstraint *data= con->data;
return data->tar;
}
}
}
return NULL;
}
/* ************** do the action ************ */
/* For the calculation of the effects of an action at the given frame on an object
* This is currently only used for the action constraint
*/
void what_does_obaction (Object *ob, bAction *act, float cframe)
{
ListBase tchanbase= {NULL, NULL};
clear_workob();
Mat4CpyMat4(workob.obmat, ob->obmat);
Mat4CpyMat4(workob.parentinv, ob->parentinv);
Mat4CpyMat4(workob.constinv, ob->constinv);
workob.parent= ob->parent;
workob.track= ob->track;
workob.trackflag= ob->trackflag;
workob.upflag= ob->upflag;
workob.partype= ob->partype;
workob.par1= ob->par1;
workob.par2= ob->par2;
workob.par3= ob->par3;
workob.constraints.first = ob->constraints.first;
workob.constraints.last = ob->constraints.last;
strcpy(workob.parsubstr, ob->parsubstr);
/* extract_ipochannels_from_action needs id's! */
workob.action= act;
extract_ipochannels_from_action(&tchanbase, &ob->id, act, "Object", bsystem_time(&workob, cframe, 0.0));
if (tchanbase.first) {
execute_ipochannels(&tchanbase);
BLI_freelistN(&tchanbase);
}
}
/* ----- nla, etc. --------- */
static void do_nla(Object *ob, int blocktype)
{
bPose *tpose= NULL;
Key *key= NULL;
ListBase tchanbase={NULL, NULL}, chanbase={NULL, NULL};
bActionStrip *strip, *striplast=NULL, *stripfirst=NULL;
float striptime, frametime, length, actlength;
float blendfac, stripframe;
float scene_cfra= frame_to_float(G.scene->r.cfra);
int doit, dostride;
if(blocktype==ID_AR) {
copy_pose(&tpose, ob->pose, 1);
rest_pose(ob->pose); // potentially destroying current not-keyed pose
}
else {
key= ob_get_key(ob);
}
/* check on extend to left or right, when no strip is hit by 'cfra' */
for (strip=ob->nlastrips.first; strip; strip=strip->next) {
/* escape loop on a hit */
if( scene_cfra >= strip->start && scene_cfra <= strip->end + 0.1f) /* note 0.1 comes back below */
break;
if(scene_cfra < strip->start) {
if(stripfirst==NULL)
stripfirst= strip;
else if(stripfirst->start > strip->start)
stripfirst= strip;
}
else if(scene_cfra > strip->end) {
if(striplast==NULL)
striplast= strip;
else if(striplast->end < strip->end)
striplast= strip;
}
}
if(strip==NULL) { /* extend */
if(striplast)
scene_cfra= striplast->end;
else if(stripfirst)
scene_cfra= stripfirst->start;
}
/* and now go over all strips */
for (strip=ob->nlastrips.first; strip; strip=strip->next){
doit=dostride= 0;
if (strip->act && !(strip->flag & ACTSTRIP_MUTE)) { /* so theres an action */
/* Determine if the current frame is within the strip's range */
length = strip->end-strip->start;
actlength = strip->actend-strip->actstart;
striptime = (scene_cfra-(strip->start)) / length;
stripframe = (scene_cfra-(strip->start)) ;
if (striptime>=0.0){
if(blocktype==ID_AR)
rest_pose(tpose);
/* To handle repeat, we add 0.1 frame extra to make sure the last frame is included */
if (striptime < 1.0f + 0.1f/length) {
/* Handle path */
if ((strip->flag & ACTSTRIP_USESTRIDE) && (blocktype==ID_AR) && (ob->ipoflag & OB_DISABLE_PATH)==0){
Object *parent= get_parent_path(ob);
if (parent) {
Curve *cu = parent->data;
float ctime, pdist;
if (cu->flag & CU_PATH){
/* Ensure we have a valid path */
if(cu->path==NULL || cu->path->data==NULL) makeDispListCurveTypes(parent, 0);
if(cu->path) {
/* Find the position on the path */
ctime= bsystem_time(ob, scene_cfra, 0.0);
if(calc_ipo_spec(cu->ipo, CU_SPEED, &ctime)==0) {
/* correct for actions not starting on zero */
ctime= (ctime - strip->actstart)/cu->pathlen;
CLAMP(ctime, 0.0, 1.0);
}
pdist = ctime*cu->path->totdist;
if(tpose && strip->stridechannel[0]) {
striptime= stridechannel_frame(parent, ob->size[0], strip, cu->path, pdist, tpose->stride_offset);
}
else {
if (strip->stridelen) {
striptime = pdist / strip->stridelen;
striptime = (float)fmod (striptime+strip->actoffs, 1.0);
}
else
striptime = 0;
}
frametime = (striptime * actlength) + strip->actstart;
frametime= bsystem_time(ob, frametime, 0.0);
if(blocktype==ID_AR) {
extract_pose_from_action (tpose, strip->act, frametime);
}
else if(blocktype==ID_OB) {
extract_ipochannels_from_action(&tchanbase, &ob->id, strip->act, "Object", frametime);
if(key)
extract_ipochannels_from_action(&tchanbase, &key->id, strip->act, "Shape", frametime);
}
doit=dostride= 1;
}
}
}
}
/* To handle repeat, we add 0.1 frame extra to make sure the last frame is included */
else {
/* Mod to repeat */
if(strip->repeat!=1.0f) {
float cycle= striptime*strip->repeat;
striptime = (float)fmod (cycle, 1.0f + 0.1f/length);
cycle-= striptime;
if(blocktype==ID_AR)
cyclic_offs_bone(ob, tpose, strip, cycle);
}
frametime = (striptime * actlength) + strip->actstart;
frametime= nla_time(frametime, (float)strip->repeat);
if(blocktype==ID_AR) {
extract_pose_from_action (tpose, strip->act, frametime);
}
else if(blocktype==ID_OB) {
extract_ipochannels_from_action(&tchanbase, &ob->id, strip->act, "Object", frametime);
if(key)
extract_ipochannels_from_action(&tchanbase, &key->id, strip->act, "Shape", frametime);
}
doit=1;
}
}
/* Handle extend */
else {
if (strip->flag & ACTSTRIP_HOLDLASTFRAME){
/* we want the strip to hold on the exact fraction of the repeat value */
frametime = actlength * (strip->repeat-(int)strip->repeat);
if(frametime<=0.000001f) frametime= actlength; /* rounding errors... */
frametime= bsystem_time(ob, frametime+strip->actstart, 0.0);
if(blocktype==ID_AR)
extract_pose_from_action (tpose, strip->act, frametime);
else if(blocktype==ID_OB) {
extract_ipochannels_from_action(&tchanbase, &ob->id, strip->act, "Object", frametime);
if(key)
extract_ipochannels_from_action(&tchanbase, &key->id, strip->act, "Shape", frametime);
}
/* handle cycle hold */
if(strip->repeat!=1.0f) {
if(blocktype==ID_AR)
cyclic_offs_bone(ob, tpose, strip, strip->repeat-1.0f);
}
doit=1;
}
}
/* Handle blendin & blendout */
if (doit){
/* Handle blendin */
if (strip->blendin>0.0 && stripframe<=strip->blendin && scene_cfra>=strip->start){
blendfac = stripframe/strip->blendin;
}
else if (strip->blendout>0.0 && stripframe>=(length-strip->blendout) && scene_cfra<=strip->end){
blendfac = (length-stripframe)/(strip->blendout);
}
else
blendfac = 1;
if(blocktype==ID_AR) {/* Blend this pose with the accumulated pose */
/* offset bone, for matching cycles */
blend_pose_offset_bone (strip, ob->pose, tpose, blendfac, strip->mode);
blend_poses (ob->pose, tpose, blendfac, strip->mode);
if(dostride)
blend_pose_strides (ob->pose, tpose, blendfac, strip->mode);
}
else {
blend_ipochannels(&chanbase, &tchanbase, blendfac, strip->mode);
BLI_freelistN(&tchanbase);
}
}
}
}
}
if(blocktype==ID_OB) {
execute_ipochannels(&chanbase);
}
else if(blocktype==ID_AR) {
/* apply stride offset to object */
VecAddf(ob->obmat[3], ob->obmat[3], ob->pose->stride_offset);
}
/* free */
if (tpose)
free_pose(tpose);
if(chanbase.first)
BLI_freelistN(&chanbase);
}
void do_all_pose_actions(Object *ob)
{
/* only to have safe calls from editor */
if(ob==NULL) return;
if(ob->type!=OB_ARMATURE || ob->pose==NULL) return;
if(ob->pose->flag & POSE_LOCKED) { /* no actions to execute while transform */
if(ob->pose->flag & POSE_DO_UNLOCK)
ob->pose->flag &= ~(POSE_LOCKED|POSE_DO_UNLOCK);
}
else if(ob->action && ((ob->nlaflag & OB_NLA_OVERRIDE)==0 || ob->nlastrips.first==NULL) ) {
float cframe= (float) G.scene->r.cfra;
cframe= get_action_frame(ob, cframe);
extract_pose_from_action (ob->pose, ob->action, bsystem_time(ob, cframe, 0.0));
}
else if(ob->nlastrips.first) {
do_nla(ob, ID_AR);
}
/* clear POSE_DO_UNLOCK flags that might have slipped through (just in case) */
ob->pose->flag &= ~POSE_DO_UNLOCK;
}
/* called from where_is_object */
void do_all_object_actions(Object *ob)
{
if(ob==NULL) return;
if(ob->dup_group) return; /* prevent conflicts, might add smarter check later */
/* Do local action */
if(ob->action && ((ob->nlaflag & OB_NLA_OVERRIDE)==0 || ob->nlastrips.first==NULL) ) {
ListBase tchanbase= {NULL, NULL};
Key *key= ob_get_key(ob);
float cframe= (float) G.scene->r.cfra;
cframe= get_action_frame(ob, cframe);
extract_ipochannels_from_action(&tchanbase, &ob->id, ob->action, "Object", bsystem_time(ob, cframe, 0.0));
if(key)
extract_ipochannels_from_action(&tchanbase, &key->id, ob->action, "Shape", bsystem_time(ob, cframe, 0.0));
if(tchanbase.first) {
execute_ipochannels(&tchanbase);
BLI_freelistN(&tchanbase);
}
}
else if(ob->nlastrips.first) {
do_nla(ob, ID_OB);
}
}
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