/* returns 1 if its OK */
static int node_group_separate_selected(bNodeTree *ntree, bNodeTree *ngroup, float offx, float offy, int make_copy)
{
bNodeLink *link, *link_next;
bNode *node, *node_next, *newnode;
ListBase anim_basepaths = {NULL, NULL};
/* deselect all nodes in the target tree */
for (node = ntree->nodes.first; node; node = node->next)
nodeSetSelected(node, false);
/* clear new pointers, set in nodeCopyNode */
for (node = ngroup->nodes.first; node; node = node->next)
node->new_node = NULL;
/* add selected nodes into the ntree */
for (node = ngroup->nodes.first; node; node = node_next) {
node_next = node->next;
if (!(node->flag & NODE_SELECT))
continue;
/* ignore interface nodes */
if (ELEM(node->type, NODE_GROUP_INPUT, NODE_GROUP_OUTPUT)) {
nodeSetSelected(node, false);
continue;
}
if (make_copy) {
/* make a copy */
newnode = nodeCopyNode(ngroup, node);
}
else {
/* use the existing node */
newnode = node;
}
/* keep track of this node's RNA "base" path (the part of the path identifying the node)
* if the old nodetree has animation data which potentially covers this node
*/
if (ngroup->adt) {
PointerRNA ptr;
char *path;
RNA_pointer_create(&ngroup->id, &RNA_Node, newnode, &ptr);
path = RNA_path_from_ID_to_struct(&ptr);
if (path)
BLI_addtail(&anim_basepaths, BLI_genericNodeN(path));
}
/* ensure valid parent pointers, detach if parent stays inside the group */
if (newnode->parent && !(newnode->parent->flag & NODE_SELECT))
nodeDetachNode(newnode);
/* migrate node */
BLI_remlink(&ngroup->nodes, newnode);
BLI_addtail(&ntree->nodes, newnode);
/* ensure unique node name in the node tree */
nodeUniqueName(ntree, newnode);
if (!newnode->parent) {
newnode->locx += offx;
newnode->locy += offy;
}
}
/* add internal links to the ntree */
for (link = ngroup->links.first; link; link = link_next) {
const bool fromselect = (link->fromnode && (link->fromnode->flag & NODE_SELECT));
const bool toselect = (link->tonode && (link->tonode->flag & NODE_SELECT));
link_next = link->next;
if (make_copy) {
/* make a copy of internal links */
if (fromselect && toselect)
nodeAddLink(ntree, link->fromnode->new_node, link->fromsock->new_sock, link->tonode->new_node, link->tosock->new_sock);
}
else {
/* move valid links over, delete broken links */
if (fromselect && toselect) {
BLI_remlink(&ngroup->links, link);
BLI_addtail(&ntree->links, link);
}
else if (fromselect || toselect) {
nodeRemLink(ngroup, link);
}
}
}
/* and copy across the animation,
* note that the animation data's action can be NULL here */
if (ngroup->adt) {
LinkData *ld, *ldn = NULL;
/* now perform the moving */
BKE_animdata_separate_by_basepath(&ngroup->id, &ntree->id, &anim_basepaths);
/* paths + their wrappers need to be freed */
for (ld = anim_basepaths.first; ld; ld = ldn) {
ldn = ld->next;
MEM_freeN(ld->data);
BLI_freelinkN(&anim_basepaths, ld);
}
}
ntree->update |= NTREE_UPDATE_NODES | NTREE_UPDATE_LINKS;
if (!make_copy)
ngroup->update |= NTREE_UPDATE_NODES | NTREE_UPDATE_LINKS;
return 1;
}
/* returns 1 if its OK */
static int node_group_ungroup(bNodeTree *ntree, bNode *gnode)
{
bNodeLink *link, *linkn, *tlink;
bNode *node, *nextnode;
bNodeTree *ngroup, *wgroup;
ListBase anim_basepaths = {NULL, NULL};
ngroup = (bNodeTree *)gnode->id;
/* clear new pointers, set in copytree */
for (node = ntree->nodes.first; node; node = node->next)
node->new_node = NULL;
/* wgroup is a temporary copy of the NodeTree we're merging in
* - all of wgroup's nodes are transferred across to their new home
* - ngroup (i.e. the source NodeTree) is left unscathed
* - temp copy. don't change ID usercount
*/
wgroup = ntreeCopyTree_ex(ngroup, G.main, false);
/* Add the nodes into the ntree */
for (node = wgroup->nodes.first; node; node = nextnode) {
nextnode = node->next;
/* Remove interface nodes.
* This also removes remaining links to and from interface nodes.
*/
if (ELEM(node->type, NODE_GROUP_INPUT, NODE_GROUP_OUTPUT)) {
nodeFreeNode(wgroup, node);
continue;
}
/* keep track of this node's RNA "base" path (the part of the path identifying the node)
* if the old nodetree has animation data which potentially covers this node
*/
if (wgroup->adt) {
PointerRNA ptr;
char *path;
RNA_pointer_create(&wgroup->id, &RNA_Node, node, &ptr);
path = RNA_path_from_ID_to_struct(&ptr);
if (path)
BLI_addtail(&anim_basepaths, BLI_genericNodeN(path));
}
/* migrate node */
BLI_remlink(&wgroup->nodes, node);
BLI_addtail(&ntree->nodes, node);
/* ensure unique node name in the node tree */
nodeUniqueName(ntree, node);
if (!node->parent) {
node->locx += gnode->locx;
node->locy += gnode->locy;
}
node->flag |= NODE_SELECT;
}
/* Add internal links to the ntree */
for (link = wgroup->links.first; link; link = linkn) {
linkn = link->next;
BLI_remlink(&wgroup->links, link);
BLI_addtail(&ntree->links, link);
}
/* and copy across the animation,
* note that the animation data's action can be NULL here */
if (wgroup->adt) {
LinkData *ld, *ldn = NULL;
bAction *waction;
/* firstly, wgroup needs to temporary dummy action that can be destroyed, as it shares copies */
waction = wgroup->adt->action = BKE_action_copy(wgroup->adt->action);
/* now perform the moving */
BKE_animdata_separate_by_basepath(&wgroup->id, &ntree->id, &anim_basepaths);
/* paths + their wrappers need to be freed */
for (ld = anim_basepaths.first; ld; ld = ldn) {
ldn = ld->next;
MEM_freeN(ld->data);
BLI_freelinkN(&anim_basepaths, ld);
}
/* free temp action too */
if (waction) {
BKE_libblock_free(G.main, waction);
}
}
/* free the group tree (takes care of user count) */
BKE_libblock_free(G.main, wgroup);
/* restore external links to and from the gnode */
/* note: the nodes have been copied to intermediate wgroup first (so need to use new_node),
* then transferred to ntree (new_node pointers remain valid).
*/
/* input links */
for (link = ngroup->links.first; link; link = link->next) {
if (link->fromnode->type == NODE_GROUP_INPUT) {
const char *identifier = link->fromsock->identifier;
int num_external_links = 0;
/* find external links to this input */
for (tlink = ntree->links.first; tlink; tlink = tlink->next) {
if (tlink->tonode == gnode && STREQ(tlink->tosock->identifier, identifier)) {
nodeAddLink(ntree, tlink->fromnode, tlink->fromsock, link->tonode->new_node, link->tosock->new_sock);
++num_external_links;
}
}
/* if group output is not externally linked,
* convert the constant input value to ensure somewhat consistent behavior */
if (num_external_links == 0) {
/* XXX TODO bNodeSocket *sock = node_group_find_input_socket(gnode, identifier);
BLI_assert(sock);*/
/* XXX TODO nodeSocketCopy(ntree, link->tosock->new_sock, link->tonode->new_node, ntree, sock, gnode);*/
}
}
}
/* output links */
for (link = ntree->links.first; link; link = link->next) {
if (link->fromnode == gnode) {
const char *identifier = link->fromsock->identifier;
int num_internal_links = 0;
/* find internal links to this output */
for (tlink = ngroup->links.first; tlink; tlink = tlink->next) {
/* only use active output node */
if (tlink->tonode->type == NODE_GROUP_OUTPUT && (tlink->tonode->flag & NODE_DO_OUTPUT)) {
if (STREQ(tlink->tosock->identifier, identifier)) {
nodeAddLink(ntree, tlink->fromnode->new_node, tlink->fromsock->new_sock, link->tonode, link->tosock);
++num_internal_links;
}
}
}
/* if group output is not internally linked,
* convert the constant output value to ensure somewhat consistent behavior */
if (num_internal_links == 0) {
/* XXX TODO bNodeSocket *sock = node_group_find_output_socket(gnode, identifier);
BLI_assert(sock);*/
/* XXX TODO nodeSocketCopy(ntree, link->tosock, link->tonode, ntree, sock, gnode); */
}
}
}
/* delete the group instance */
nodeFreeNode(ntree, gnode);
ntree->update |= NTREE_UPDATE_NODES | NTREE_UPDATE_LINKS;
return 1;
}
/* returns 1 if its OK */
int node_group_ungroup(bNodeTree *ntree, bNode *gnode)
{
bNodeLink *link, *linkn;
bNode *node, *nextn;
bNodeTree *ngroup, *wgroup;
ListBase anim_basepaths = {NULL, NULL};
ngroup= (bNodeTree *)gnode->id;
if(ngroup==NULL) return 0;
/* clear new pointers, set in copytree */
for(node= ntree->nodes.first; node; node= node->next)
node->new_node= NULL;
/* wgroup is a temporary copy of the NodeTree we're merging in
* - all of wgroup's nodes are transferred across to their new home
* - ngroup (i.e. the source NodeTree) is left unscathed
*/
wgroup= ntreeCopyTree(ngroup);
/* add the nodes into the ntree */
for(node= wgroup->nodes.first; node; node= nextn) {
nextn= node->next;
/* keep track of this node's RNA "base" path (the part of the pat identifying the node)
* if the old nodetree has animation data which potentially covers this node
*/
if (wgroup->adt) {
PointerRNA ptr;
char *path;
RNA_pointer_create(&wgroup->id, &RNA_Node, node, &ptr);
path = RNA_path_from_ID_to_struct(&ptr);
if (path)
BLI_addtail(&anim_basepaths, BLI_genericNodeN(path));
}
/* migrate node */
BLI_remlink(&wgroup->nodes, node);
BLI_addtail(&ntree->nodes, node);
node->locx+= gnode->locx;
node->locy+= gnode->locy;
node->flag |= NODE_SELECT;
}
/* restore external links to and from the gnode */
for(link= ntree->links.first; link; link= link->next) {
if (link->fromnode==gnode) {
if (link->fromsock->groupsock) {
bNodeSocket *gsock= link->fromsock->groupsock;
if (gsock->link) {
if (gsock->link->fromnode) {
/* NB: using the new internal copies here! the groupsock pointer still maps to the old tree */
link->fromnode = (gsock->link->fromnode ? gsock->link->fromnode->new_node : NULL);
link->fromsock = gsock->link->fromsock->new_sock;
}
else {
/* group output directly maps to group input */
bNodeSocket *insock= node_group_find_input(gnode, gsock->link->fromsock);
if (insock->link) {
link->fromnode = insock->link->fromnode;
link->fromsock = insock->link->fromsock;
}
}
}
else {
/* copy the default input value from the group socket default to the external socket */
convert_socket_value(gsock, link->tosock);
}
}
}
}
/* remove internal output links, these are not used anymore */
for(link=wgroup->links.first; link; link= linkn) {
linkn = link->next;
if (!link->tonode)
nodeRemLink(wgroup, link);
}
/* restore links from internal nodes */
for(link= wgroup->links.first; link; link= link->next) {
/* indicates link to group input */
if (!link->fromnode) {
/* NB: can't use find_group_node_input here,
* because gnode sockets still point to the old tree!
*/
bNodeSocket *insock;
for (insock= gnode->inputs.first; insock; insock= insock->next)
if (insock->groupsock->new_sock == link->fromsock)
break;
if (insock->link) {
link->fromnode = insock->link->fromnode;
link->fromsock = insock->link->fromsock;
}
else {
/* copy the default input value from the group node socket default to the internal socket */
convert_socket_value(insock, link->tosock);
nodeRemLink(wgroup, link);
}
}
}
/* add internal links to the ntree */
for(link= wgroup->links.first; link; link= linkn) {
linkn= link->next;
BLI_remlink(&wgroup->links, link);
BLI_addtail(&ntree->links, link);
}
/* and copy across the animation */
if (wgroup->adt) {
LinkData *ld, *ldn=NULL;
bAction *waction;
/* firstly, wgroup needs to temporary dummy action that can be destroyed, as it shares copies */
waction = wgroup->adt->action = copy_action(wgroup->adt->action);
/* now perform the moving */
BKE_animdata_separate_by_basepath(&wgroup->id, &ntree->id, &anim_basepaths);
/* paths + their wrappers need to be freed */
for (ld = anim_basepaths.first; ld; ld = ldn) {
ldn = ld->next;
MEM_freeN(ld->data);
BLI_freelinkN(&anim_basepaths, ld);
}
/* free temp action too */
free_libblock(&G.main->action, waction);
}
/* delete the group instance. this also removes old input links! */
nodeFreeNode(ntree, gnode);
/* free the group tree (takes care of user count) */
free_libblock(&G.main->nodetree, wgroup);
ntree->update |= NTREE_UPDATE_NODES|NTREE_UPDATE_LINKS;
ntreeUpdateTree(ntree);
return 1;
}
static void node_group_make_insert_selected(const bContext *C, bNodeTree *ntree, bNode *gnode)
{
bNodeTree *ngroup = (bNodeTree *)gnode->id;
bNodeLink *link, *linkn;
bNode *node, *nextn;
bNodeSocket *sock;
ListBase anim_basepaths = {NULL, NULL};
float min[2], max[2], center[2];
int totselect;
int expose_all = FALSE;
bNode *input_node, *output_node;
/* XXX rough guess, not nice but we don't have access to UI constants here ... */
static const float offsetx = 200;
static const float offsety = 0.0f;
/* deselect all nodes in the target tree */
for (node = ngroup->nodes.first; node; node = node->next)
nodeSetSelected(node, FALSE);
totselect = node_get_selected_minmax(ntree, gnode, min, max);
add_v2_v2v2(center, min, max);
mul_v2_fl(center, 0.5f);
/* auto-add interface for "solo" nodes */
if (totselect == 1)
expose_all = TRUE;
/* move nodes over */
for (node = ntree->nodes.first; node; node = nextn) {
nextn = node->next;
if (node_group_make_use_node(node, gnode)) {
/* keep track of this node's RNA "base" path (the part of the pat identifying the node)
* if the old nodetree has animation data which potentially covers this node
*/
if (ntree->adt) {
PointerRNA ptr;
char *path;
RNA_pointer_create(&ntree->id, &RNA_Node, node, &ptr);
path = RNA_path_from_ID_to_struct(&ptr);
if (path)
BLI_addtail(&anim_basepaths, BLI_genericNodeN(path));
}
/* ensure valid parent pointers, detach if parent stays outside the group */
if (node->parent && !(node->parent->flag & NODE_SELECT))
nodeDetachNode(node);
/* change node-collection membership */
BLI_remlink(&ntree->nodes, node);
BLI_addtail(&ngroup->nodes, node);
/* ensure unique node name in the ngroup */
nodeUniqueName(ngroup, node);
}
}
/* move animation data over */
if (ntree->adt) {
LinkData *ld, *ldn = NULL;
BKE_animdata_separate_by_basepath(&ntree->id, &ngroup->id, &anim_basepaths);
/* paths + their wrappers need to be freed */
for (ld = anim_basepaths.first; ld; ld = ldn) {
ldn = ld->next;
MEM_freeN(ld->data);
BLI_freelinkN(&anim_basepaths, ld);
}
}
/* node groups don't use internal cached data */
ntreeFreeCache(ngroup);
/* create input node */
input_node = nodeAddStaticNode(C, ngroup, NODE_GROUP_INPUT);
input_node->locx = min[0] - center[0] - offsetx;
input_node->locy = -offsety;
/* create output node */
output_node = nodeAddStaticNode(C, ngroup, NODE_GROUP_OUTPUT);
output_node->locx = max[0] - center[0] + offsetx;
output_node->locy = -offsety;
/* relink external sockets */
for (link = ntree->links.first; link; link = linkn) {
int fromselect = node_group_make_use_node(link->fromnode, gnode);
int toselect = node_group_make_use_node(link->tonode, gnode);
linkn = link->next;
if ((fromselect && link->tonode == gnode) || (toselect && link->fromnode == gnode)) {
/* remove all links to/from the gnode.
* this can remove link information, but there's no general way to preserve it.
*/
nodeRemLink(ntree, link);
}
else if (fromselect && toselect) {
BLI_remlink(&ntree->links, link);
BLI_addtail(&ngroup->links, link);
}
else if (toselect) {
bNodeSocket *iosock = ntreeAddSocketInterfaceFromSocket(ngroup, link->tonode, link->tosock);
bNodeSocket *input_sock;
/* update the group node and interface node sockets,
* so the new interface socket can be linked.
*/
node_group_verify(ntree, gnode, (ID *)ngroup);
node_group_input_verify(ngroup, input_node, (ID *)ngroup);
/* create new internal link */
input_sock = node_group_input_find_socket(input_node, iosock->identifier);
nodeAddLink(ngroup, input_node, input_sock, link->tonode, link->tosock);
/* redirect external link */
link->tonode = gnode;
link->tosock = node_group_find_input_socket(gnode, iosock->identifier);
}
else if (fromselect) {
bNodeSocket *iosock = ntreeAddSocketInterfaceFromSocket(ngroup, link->fromnode, link->fromsock);
bNodeSocket *output_sock;
/* update the group node and interface node sockets,
* so the new interface socket can be linked.
*/
node_group_verify(ntree, gnode, (ID *)ngroup);
node_group_output_verify(ngroup, output_node, (ID *)ngroup);
/* create new internal link */
output_sock = node_group_output_find_socket(output_node, iosock->identifier);
nodeAddLink(ngroup, link->fromnode, link->fromsock, output_node, output_sock);
/* redirect external link */
link->fromnode = gnode;
link->fromsock = node_group_find_output_socket(gnode, iosock->identifier);
}
}
/* move nodes in the group to the center */
for (node = ngroup->nodes.first; node; node = node->next) {
if (node_group_make_use_node(node, gnode) && !node->parent) {
node->locx -= center[0];
node->locy -= center[1];
}
}
/* expose all unlinked sockets too */
if (expose_all) {
for (node = ngroup->nodes.first; node; node = node->next) {
if (node_group_make_use_node(node, gnode)) {
for (sock = node->inputs.first; sock; sock = sock->next) {
bNodeSocket *iosock, *input_sock;
int skip = FALSE;
for (link = ngroup->links.first; link; link = link->next) {
if (link->tosock == sock) {
skip = TRUE;
break;
}
}
if (skip)
continue;
iosock = ntreeAddSocketInterfaceFromSocket(ngroup, node, sock);
node_group_input_verify(ngroup, input_node, (ID *)ngroup);
/* create new internal link */
input_sock = node_group_input_find_socket(input_node, iosock->identifier);
nodeAddLink(ngroup, input_node, input_sock, node, sock);
}
for (sock = node->outputs.first; sock; sock = sock->next) {
bNodeSocket *iosock, *output_sock;
int skip = FALSE;
for (link = ngroup->links.first; link; link = link->next)
if (link->fromsock == sock)
skip = TRUE;
if (skip)
continue;
iosock = ntreeAddSocketInterfaceFromSocket(ngroup, node, sock);
node_group_output_verify(ngroup, output_node, (ID *)ngroup);
/* create new internal link */
output_sock = node_group_output_find_socket(output_node, iosock->identifier);
nodeAddLink(ngroup, node, sock, output_node, output_sock);
}
}
}
}
/* update of the group tree */
ngroup->update |= NTREE_UPDATE | NTREE_UPDATE_LINKS;
/* update of the tree containing the group instance node */
ntree->update |= NTREE_UPDATE_NODES | NTREE_UPDATE_LINKS;
}
bNode *node_group_make_from_selected(bNodeTree *ntree)
{
bNodeLink *link, *linkn;
bNode *node, *gnode, *nextn;
bNodeTree *ngroup;
bNodeSocket *gsock;
ListBase anim_basepaths = {NULL, NULL};
float min[2], max[2];
int totnode=0;
bNodeTemplate ntemp;
INIT_MINMAX2(min, max);
/* is there something to group? also do some clearing */
for(node= ntree->nodes.first; node; node= node->next) {
if(node->flag & NODE_SELECT) {
/* no groups in groups */
if(node->type==NODE_GROUP)
return NULL;
DO_MINMAX2( (&node->locx), min, max);
totnode++;
}
node->done= 0;
}
if(totnode==0) return NULL;
/* check if all connections are OK, no unselected node has both
inputs and outputs to a selection */
for(link= ntree->links.first; link; link= link->next) {
if(link->fromnode && link->tonode && link->fromnode->flag & NODE_SELECT)
link->tonode->done |= 1;
if(link->fromnode && link->tonode && link->tonode->flag & NODE_SELECT)
link->fromnode->done |= 2;
}
for(node= ntree->nodes.first; node; node= node->next) {
if((node->flag & NODE_SELECT)==0)
if(node->done==3)
break;
}
if(node)
return NULL;
/* OK! new nodetree */
ngroup= ntreeAddTree("NodeGroup", ntree->type, NODE_GROUP);
/* move nodes over */
for(node= ntree->nodes.first; node; node= nextn) {
nextn= node->next;
if(node->flag & NODE_SELECT) {
/* keep track of this node's RNA "base" path (the part of the pat identifying the node)
* if the old nodetree has animation data which potentially covers this node
*/
if (ntree->adt) {
PointerRNA ptr;
char *path;
RNA_pointer_create(&ntree->id, &RNA_Node, node, &ptr);
path = RNA_path_from_ID_to_struct(&ptr);
if (path)
BLI_addtail(&anim_basepaths, BLI_genericNodeN(path));
}
/* change node-collection membership */
BLI_remlink(&ntree->nodes, node);
BLI_addtail(&ngroup->nodes, node);
node->locx-= 0.5f*(min[0]+max[0]);
node->locy-= 0.5f*(min[1]+max[1]);
}
}
/* move animation data over */
if (ntree->adt) {
LinkData *ld, *ldn=NULL;
BKE_animdata_separate_by_basepath(&ntree->id, &ngroup->id, &anim_basepaths);
/* paths + their wrappers need to be freed */
for (ld = anim_basepaths.first; ld; ld = ldn) {
ldn = ld->next;
MEM_freeN(ld->data);
BLI_freelinkN(&anim_basepaths, ld);
}
}
/* make group node */
ntemp.type = NODE_GROUP;
ntemp.ngroup = ngroup;
gnode= nodeAddNode(ntree, &ntemp);
gnode->locx= 0.5f*(min[0]+max[0]);
gnode->locy= 0.5f*(min[1]+max[1]);
/* relink external sockets */
for(link= ntree->links.first; link; link= linkn) {
linkn= link->next;
if(link->fromnode && link->tonode && (link->fromnode->flag & link->tonode->flag & NODE_SELECT)) {
BLI_remlink(&ntree->links, link);
BLI_addtail(&ngroup->links, link);
}
else if(link->tonode && (link->tonode->flag & NODE_SELECT)) {
gsock = node_group_expose_socket(ngroup, link->tosock, SOCK_IN);
link->tosock->link = nodeAddLink(ngroup, NULL, gsock, link->tonode, link->tosock);
link->tosock = node_group_add_extern_socket(ntree, &gnode->inputs, SOCK_IN, gsock);
link->tonode = gnode;
}
else if(link->fromnode && (link->fromnode->flag & NODE_SELECT)) {
/* search for existing group node socket */
for (gsock=ngroup->outputs.first; gsock; gsock=gsock->next)
if (gsock->link && gsock->link->fromsock==link->fromsock)
break;
if (!gsock) {
gsock = node_group_expose_socket(ngroup, link->fromsock, SOCK_OUT);
gsock->link = nodeAddLink(ngroup, link->fromnode, link->fromsock, NULL, gsock);
link->fromsock = node_group_add_extern_socket(ntree, &gnode->outputs, SOCK_OUT, gsock);
}
else
link->fromsock = node_group_find_output(gnode, gsock);
link->fromnode = gnode;
}
}
ngroup->update |= NTREE_UPDATE;
ntreeUpdateTree(ngroup);
ntree->update |= NTREE_UPDATE_NODES|NTREE_UPDATE_LINKS;
ntreeUpdateTree(ntree);
return gnode;
}
