void node_group_expose_all_sockets(bNodeTree *ngroup)
{
bNode *node;
bNodeSocket *sock, *gsock;
for (node=ngroup->nodes.first; node; node=node->next) {
for (sock=node->inputs.first; sock; sock=sock->next) {
if (!sock->link && !nodeSocketIsHidden(sock)) {
gsock = node_group_add_socket(ngroup, sock->name, sock->type, SOCK_IN);
/* initialize the default value. */
node_socket_copy_default_value(gsock->type, gsock->default_value, sock->default_value);
sock->link = nodeAddLink(ngroup, NULL, gsock, node, sock);
}
}
for (sock=node->outputs.first; sock; sock=sock->next) {
if (nodeCountSocketLinks(ngroup, sock)==0 && !nodeSocketIsHidden(sock)) {
gsock = node_group_add_socket(ngroup, sock->name, sock->type, SOCK_OUT);
/* initialize the default value. */
node_socket_copy_default_value(gsock->type, gsock->default_value, sock->default_value);
gsock->link = nodeAddLink(ngroup, node, sock, NULL, gsock);
}
}
}
}
/* Use specified node and socket as an input for unconnected normal sockets. */
static void ntree_shader_link_builtin_normal(bNodeTree *ntree,
bNode *node_from,
bNodeSocket *socket_from)
{
for (bNode *node = ntree->nodes.first; node != NULL; node = node->next) {
if (node == node_from) {
/* Don't connect node itself! */
continue;
}
bNodeSocket *sock = ntree_shader_node_find_input(node, "Normal");
/* TODO(sergey): Can we do something smarter here than just a name-based
* matching?
*/
if (sock == NULL) {
/* There's no Normal input, nothing to link. */
continue;
}
if (sock->link != NULL) {
/* Something is linked to the normal input already. can't
* use other input for that.
*/
continue;
}
/* Create connection between specified node and the normal input. */
nodeAddLink(ntree, node_from, socket_from, node, sock);
}
}
static void node_group_output_update(bNodeTree *ntree, bNode *node)
{
bNodeSocket *extsock = node->inputs.last;
bNodeLink *link, *linknext, *exposelink;
/* Adding a tree socket and verifying will remove the extension socket!
* This list caches the existing links to the extension socket
* so they can be recreated after verification.
*/
ListBase tmplinks;
/* find links to the extension socket and store them */
BLI_listbase_clear(&tmplinks);
for (link = ntree->links.first; link; link = linknext) {
linknext = link->next;
if (nodeLinkIsHidden(link))
continue;
if (link->tosock == extsock) {
bNodeLink *tlink = MEM_callocN(sizeof(bNodeLink), "temporary link");
*tlink = *link;
BLI_addtail(&tmplinks, tlink);
nodeRemLink(ntree, link);
}
}
/* find valid link to expose */
exposelink = NULL;
for (link = tmplinks.first; link; link = link->next) {
/* XXX Multiple sockets can be connected to the extension socket at once,
* in that case the arbitrary first link determines name and type.
* This could be improved by choosing the "best" type among all links,
* whatever that means.
*/
if (link->fromsock->type != SOCK_CUSTOM) {
exposelink = link;
break;
}
}
if (exposelink) {
bNodeSocket *gsock, *newsock;
/* XXX what if connecting virtual to virtual socket?? */
gsock = ntreeAddSocketInterfaceFromSocket(ntree, exposelink->fromnode, exposelink->fromsock);
node_group_output_verify(ntree, node, (ID *)ntree);
newsock = node_group_output_find_socket(node, gsock->identifier);
/* redirect links to the extension socket */
for (link = tmplinks.first; link; link = link->next) {
nodeAddLink(ntree, link->fromnode, link->fromsock, node, newsock);
}
}
BLI_freelistN(&tmplinks);
}
/* /////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// */
static int connect_nodes(Main *bmain, bNodeTree *ntree, bNode *node_fr, bNodeSocket *sock_fr, bNode *node_to, bNodeSocket *sock_to)
{
bNodeLink *link = nodeAddLink(ntree, node_fr, sock_fr, node_to, sock_to);
ntreeUpdateTree(bmain, ntree);
if (!(link->flag & NODE_LINK_VALID)) {
nodeRemLink(ntree, link);
return 0;
}
return 1;
} /* connect_nodes() */
void BKE_linestyle_default_shader(const bContext *C, FreestyleLineStyle *linestyle)
{
bNode *uv_along_stroke, *input_texure, *output_linestyle;
bNodeSocket *fromsock, *tosock;
bNodeTree *ntree;
BLI_assert(linestyle->nodetree == NULL);
ntree = ntreeAddTree(NULL, "stroke_shader", "ShaderNodeTree");
linestyle->nodetree = ntree;
uv_along_stroke = nodeAddStaticNode(C, ntree, SH_NODE_UVALONGSTROKE);
uv_along_stroke->locx = 0.0f;
uv_along_stroke->locy = 300.0f;
uv_along_stroke->custom1 = 0; // use_tips
input_texure = nodeAddStaticNode(C, ntree, SH_NODE_TEX_IMAGE);
input_texure->locx = 200.0f;
input_texure->locy = 300.0f;
output_linestyle = nodeAddStaticNode(C, ntree, SH_NODE_OUTPUT_LINESTYLE);
output_linestyle->locx = 400.0f;
output_linestyle->locy = 300.0f;
output_linestyle->custom1 = MA_RAMP_BLEND;
output_linestyle->custom2 = 0; // use_clamp
nodeSetActive(ntree, input_texure);
fromsock = BLI_findlink(&uv_along_stroke->outputs, 0); // UV
tosock = BLI_findlink(&input_texure->inputs, 0); // UV
nodeAddLink(ntree, uv_along_stroke, fromsock, input_texure, tosock);
fromsock = BLI_findlink(&input_texure->outputs, 0); // Color
tosock = BLI_findlink(&output_linestyle->inputs, 0); // Color
nodeAddLink(ntree, input_texure, fromsock, output_linestyle, tosock);
ntreeUpdateTree(CTX_data_main(C), ntree);
}
/* Re-link displacement output to unconnected normal sockets via bump node.
* This way material with have proper displacement in the viewport.
*/
static void ntree_shader_relink_displacement(bNodeTree *ntree,
short compatibility)
{
if (compatibility != NODE_NEW_SHADING) {
/* We can only deal with new shading system here. */
return;
}
bNode *displacement_node;
bNodeSocket *displacement_socket;
bNodeLink *displacement_link;
if (!ntree_shader_has_displacement(ntree,
&displacement_node,
&displacement_socket,
&displacement_link))
{
/* There is no displacement output connected, nothing to re-link. */
return;
}
/* We have to disconnect displacement output socket, otherwise we'll have
* cycles in the Cycles material :)
*/
nodeRemLink(ntree, displacement_link);
/* We can't connect displacement to normal directly, use bump node for that
* and hope that it gives good enough approximation.
*/
bNode *bump_node = nodeAddStaticNode(NULL, ntree, SH_NODE_BUMP);
bNodeSocket *bump_input_socket = ntree_shader_node_find_input(bump_node, "Height");
bNodeSocket *bump_output_socket = ntree_shader_node_find_output(bump_node, "Normal");
BLI_assert(bump_input_socket != NULL);
BLI_assert(bump_output_socket != NULL);
/* Connect bump node to where displacement output was originally
* connected to.
*/
nodeAddLink(ntree,
displacement_node, displacement_socket,
bump_node, bump_input_socket);
/* Connect all free-standing Normal inputs. */
ntree_shader_link_builtin_normal(ntree,
bump_node,
bump_output_socket,
displacement_node,
displacement_socket);
/* TODO(sergey): Reconnect Geometry Info->Normal sockets to the new
* bump node.
*/
/* We modified the tree, it needs to be updated now. */
ntreeUpdateTree(G.main, ntree);
}
static bool ntree_shader_relink_node_normal(bNodeTree *ntree,
bNode *node,
bNode *node_from,
bNodeSocket *socket_from)
{
bNodeSocket *sock = ntree_shader_node_find_input(node, "Normal");
/* TODO(sergey): Can we do something smarter here than just a name-based
* matching?
*/
if (sock == NULL) {
/* There's no Normal input, nothing to link. */
return false;
}
if (sock->link != NULL) {
/* Something is linked to the normal input already. can't
* use other input for that.
*/
return false;
}
/* Create connection between specified node and the normal input. */
nodeAddLink(ntree, node_from, socket_from, node, sock);
return true;
}
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;
}
/* 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) {
int fromselect = (link->fromnode && (link->fromnode->flag & NODE_SELECT));
int 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, 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->action, waction);
}
}
/* free the group tree (takes care of user count) */
BKE_libblock_free(&G.main->nodetree, 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;
}
/* add new node connected to this socket, or replace an existing one */
static void node_socket_add_replace(const bContext *C, bNodeTree *ntree, bNode *node_to, bNodeSocket *sock_to,
int type, NodeLinkItem *item)
{
bNode *node_from;
bNodeSocket *sock_from_tmp;
bNode *node_prev = NULL;
/* unlink existing node */
if (sock_to->link) {
node_prev = sock_to->link->fromnode;
nodeRemLink(ntree, sock_to->link);
}
/* find existing node that we can use */
for (node_from = ntree->nodes.first; node_from; node_from = node_from->next)
if (node_from->type == type)
break;
if (node_from)
if (node_from->inputs.first || node_from->typeinfo->draw_buttons || node_from->typeinfo->draw_buttons_ex)
node_from = NULL;
if (node_prev && node_prev->type == type && node_link_item_compare(node_prev, item)) {
/* keep the previous node if it's the same type */
node_from = node_prev;
}
else if (!node_from) {
node_from = nodeAddStaticNode(C, ntree, type);
if (node_prev != NULL) {
/* If we're replacing existing node, use it's location. */
node_from->locx = node_prev->locx;
node_from->locy = node_prev->locy;
node_from->offsetx = node_prev->offsetx;
node_from->offsety = node_prev->offsety;
}
else {
/* Avoid exact intersection of nodes.
* TODO(sergey): Still not ideal, but better than nothing.
*/
int index = BLI_findindex(&node_to->inputs, sock_to);
BLI_assert(index != -1);
node_from->locx = node_to->locx - (node_from->typeinfo->width + 50);
node_from->locy = node_to->locy - (node_from->typeinfo->height * index);
}
node_link_item_apply(node_from, item);
}
nodeSetActive(ntree, node_from);
/* add link */
sock_from_tmp = BLI_findlink(&node_from->outputs, item->socket_index);
nodeAddLink(ntree, node_from, sock_from_tmp, node_to, sock_to);
sock_to->flag &= ~SOCK_COLLAPSED;
/* copy input sockets from previous node */
if (node_prev && node_from != node_prev) {
bNodeSocket *sock_prev, *sock_from;
for (sock_prev = node_prev->inputs.first; sock_prev; sock_prev = sock_prev->next) {
for (sock_from = node_from->inputs.first; sock_from; sock_from = sock_from->next) {
if (nodeCountSocketLinks(ntree, sock_from) >= sock_from->limit)
continue;
if (STREQ(sock_prev->name, sock_from->name) && sock_prev->type == sock_from->type) {
bNodeLink *link = sock_prev->link;
if (link && link->fromnode) {
nodeAddLink(ntree, link->fromnode, link->fromsock, node_from, sock_from);
nodeRemLink(ntree, link);
}
node_socket_copy_default_value(sock_from, sock_prev);
}
}
}
/* also preserve mapping for texture nodes */
if (node_from->typeinfo->nclass == NODE_CLASS_TEXTURE &&
node_prev->typeinfo->nclass == NODE_CLASS_TEXTURE)
{
memcpy(node_from->storage, node_prev->storage, sizeof(NodeTexBase));
}
/* remove node */
node_remove_linked(ntree, node_prev);
}
nodeUpdate(ntree, node_from);
nodeUpdate(ntree, node_to);
ntreeUpdateTree(CTX_data_main(C), ntree);
ED_node_tag_update_nodetree(CTX_data_main(C), ntree);
}
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;
}
/* add new node connected to this socket, or replace an existing one */
static void node_socket_add_replace(Main *bmain, bNodeTree *ntree, bNode *node_to, bNodeSocket *sock_to, bNodeTemplate *ntemp, int sock_num)
{
bNode *node_from;
bNodeSocket *sock_from;
bNode *node_prev = NULL;
/* unlink existing node */
if (sock_to->link) {
node_prev = sock_to->link->fromnode;
nodeRemLink(ntree, sock_to->link);
}
/* find existing node that we can use */
for (node_from=ntree->nodes.first; node_from; node_from=node_from->next)
if (node_from->type == ntemp->type)
break;
if (node_from)
if (!(node_from->inputs.first == NULL && !(node_from->typeinfo->flag & NODE_OPTIONS)))
node_from = NULL;
if (node_prev && node_prev->type == ntemp->type &&
(ntemp->type != NODE_GROUP || node_prev->id == &ntemp->ngroup->id)) {
/* keep the previous node if it's the same type */
node_from = node_prev;
}
else if (!node_from) {
node_from= nodeAddNode(ntree, ntemp);
node_from->locx = node_to->locx - (node_from->typeinfo->width + 50);
node_from->locy = node_to->locy;
if (node_from->id)
id_us_plus(node_from->id);
}
nodeSetActive(ntree, node_from);
/* add link */
sock_from = BLI_findlink(&node_from->outputs, sock_num);
nodeAddLink(ntree, node_from, sock_from, node_to, sock_to);
/* copy input sockets from previous node */
if (node_prev && node_from != node_prev) {
bNodeSocket *sock_prev, *sock_from;
for (sock_prev=node_prev->inputs.first; sock_prev; sock_prev=sock_prev->next) {
for (sock_from=node_from->inputs.first; sock_from; sock_from=sock_from->next) {
if (nodeCountSocketLinks(ntree, sock_from) >= sock_from->limit)
continue;
if (strcmp(sock_prev->name, sock_from->name) == 0 && sock_prev->type == sock_from->type) {
bNodeLink *link = sock_prev->link;
if (link && link->fromnode) {
nodeAddLink(ntree, link->fromnode, link->fromsock, node_from, sock_from);
nodeRemLink(ntree, link);
}
node_socket_free_default_value(sock_from->type, sock_from->default_value);
sock_from->default_value = node_socket_make_default_value(sock_from->type);
node_socket_copy_default_value(sock_from->type, sock_from->default_value, sock_prev->default_value);
}
}
}
/* also preserve mapping for texture nodes */
if (node_from->typeinfo->nclass == NODE_CLASS_TEXTURE &&
node_prev->typeinfo->nclass == NODE_CLASS_TEXTURE)
{
memcpy(node_from->storage, node_prev->storage, sizeof(NodeTexBase));
}
/* remove node */
node_remove_linked(ntree, node_prev);
}
nodeUpdate(ntree, node_from);
nodeUpdate(ntree, node_to);
ntreeUpdateTree(ntree);
ED_node_generic_update(bmain, ntree, node_to);
}
static void ntree_shader_link_builtin_group_normal(
bNodeTree *ntree,
bNode *group_node,
bNode *node_from,
bNodeSocket *socket_from,
bNode *displacement_node,
bNodeSocket *displacement_socket)
{
bNodeTree *group_ntree = (bNodeTree *)group_node->id;
/* Create input socket to plug displacement connection to. */
bNodeSocket *group_normal_socket =
ntreeAddSocketInterface(group_ntree,
SOCK_IN,
"NodeSocketVector",
"Normal");
/* Need to update tree so all node instances nodes gets proper sockets. */
bNode *group_input_node = ntreeFindType(group_ntree, NODE_GROUP_INPUT);
node_group_verify(ntree, group_node, &group_ntree->id);
if (group_input_node)
node_group_input_verify(group_ntree, group_input_node, &group_ntree->id);
ntreeUpdateTree(G.main, group_ntree);
/* Assumes sockets are always added at the end. */
bNodeSocket *group_node_normal_socket = group_node->inputs.last;
if (displacement_node == group_node) {
/* If displacement is coming from this node group we need to perform
* some internal re-linking in order to avoid cycles.
*/
bNode *group_output_node = ntreeFindType(group_ntree, NODE_GROUP_OUTPUT);
BLI_assert(group_output_node != NULL);
bNodeSocket *group_output_node_displacement_socket =
nodeFindSocket(group_output_node,
SOCK_IN,
displacement_socket->identifier);
bNodeLink *group_displacement_link = group_output_node_displacement_socket->link;
if (group_displacement_link == NULL) {
/* Displacement output is not connected to anything, can just stop
* right away.
*/
return;
}
/* This code is similar to ntree_shader_relink_displacement() */
bNode *group_displacement_node = group_displacement_link->fromnode;
bNodeSocket *group_displacement_socket = group_displacement_link->fromsock;
/* Create and link bump node.
* Can't re-use bump node from parent tree because it'll cause cycle.
*/
bNode *bump_node = nodeAddStaticNode(NULL, group_ntree, SH_NODE_BUMP);
bNodeSocket *bump_input_socket = ntree_shader_node_find_input(bump_node, "Height");
bNodeSocket *bump_output_socket = ntree_shader_node_find_output(bump_node, "Normal");
BLI_assert(bump_input_socket != NULL);
BLI_assert(bump_output_socket != NULL);
nodeAddLink(group_ntree,
group_displacement_node, group_displacement_socket,
bump_node, bump_input_socket);
/* Relink normals inside of the instanced tree. */
ntree_shader_link_builtin_normal(group_ntree,
bump_node,
bump_output_socket,
group_displacement_node,
group_displacement_socket);
ntreeUpdateTree(G.main, group_ntree);
}
else if (group_input_node) {
/* Connect group node normal input. */
nodeAddLink(ntree,
node_from, socket_from,
group_node, group_node_normal_socket);
BLI_assert(group_input_node != NULL);
bNodeSocket *group_input_node_normal_socket =
nodeFindSocket(group_input_node,
SOCK_OUT,
group_normal_socket->identifier);
BLI_assert(group_input_node_normal_socket != NULL);
/* Relink normals inside of the instanced tree. */
ntree_shader_link_builtin_normal(group_ntree,
group_input_node,
group_input_node_normal_socket,
displacement_node,
displacement_socket);
ntreeUpdateTree(G.main, group_ntree);
}
}
