def update(self):
"""
The method will be triggered upon editor changes, typically before node tree update method.
It is better to avoid using this trigger.
"""
CurrentEvents.new_event(BlenderEventsTypes.node_update, self)
self.sv_update()
def updateNode(self, context):
"""
When a node has changed state and need to call a partial update.
For example a user exposed bpy.prop
"""
CurrentEvents.new_event(BlenderEventsTypes.node_property_update, self)
self.process_node(context)
def sv_handler_undo_post(scene):
CurrentEvents.new_event(BlenderEventsTypes.undo)
# this function appears to be hoisted into an environment that does not have the same locals()
# hence this dict must be imported. (jan 2019)
from sverchok.core import undo_handler_node_count
num_to_test_against = 0
links_changed = False
for ng in sverchok_trees():
num_to_test_against += len(ng.nodes)
ng.sv_links.create_new_links(ng)
links_changed = ng.sv_links.links_have_changed(ng)
if links_changed:
break
if links_changed or not (undo_handler_node_count['sv_groups']
== num_to_test_against):
print('looks like a node was removed, cleaning')
sv_clean(scene)
for ng in sverchok_trees():
ng.nodes_dict.load_nodes(ng)
ng.has_changed = True
sv_main_handler(scene)
undo_handler_node_count['sv_groups'] = 0
def init(self, context):
"""
this function is triggered upon node creation,
- freezes the node
- delegates further initialization information to sv_init
- sets node color
- unfreezes the node
- sets custom defaults (nodes, and sockets)
"""
CurrentEvents.new_event(BlenderEventsTypes.add_node, self)
ng = self.id_data
ng.freeze()
ng.nodes_dict.load_node(self)
if hasattr(self, "sv_init"):
try:
ng.configuring_new_node = True
self.sv_init(context)
except Exception as err:
print('nodetree.node.sv_init failure - stare at the error message below')
sys.stderr.write('ERROR: %s\n' % str(err))
ng.configuring_new_node = False
self.set_color()
ng.unfreeze()
if not ng.limited_init:
# print('applying default for', self.name)
set_defaults_if_defined(self)
def init(self, context):
"""
this function is triggered upon node creation,
- freezes the node
- delegates further initialization information to sv_init
- sets node color
- unfreezes the node
"""
CurrentEvents.new_event(BlenderEventsTypes.add_node, self)
ng = self.id_data
if ng.bl_idname == 'SvGroupTree':
self.sv_init(context)
else:
ng.freeze()
ng.nodes_dict.load_node(self)
if hasattr(self, "sv_init"):
try:
self.sv_init(context)
except Exception as err:
print(
'nodetree.node.sv_init failure - stare at the error message below'
)
sys.stderr.write('ERROR: %s\n' % str(err))
self.set_color()
ng.unfreeze()
def free(self):
"""
This method is not supposed to be overriden in specific nodes.
Override sv_free() instead
"""
CurrentEvents.new_event(BlenderEventsTypes.free_node, self)
self.sv_free()
for s in self.outputs:
s.sv_forget()
node_tree = self.id_data
if node_tree.bl_idname in {
'SverchCustomTreeType', 'SverchGroupTreeType'
}:
node_tree.nodes_dict.forget_node(self)
if hasattr(self, "has_3dview_props"): # todo remove
print("about to remove this node's props from Sv3DProps")
try:
bpy.ops.node.sv_remove_3dviewpropitem(
node_name=self.name, tree_name=self.id_data.name)
except:
print(
f'failed to remove {self.name} from tree={self.id_data.name}'
)
def copy(self, original):
"""
This method is not supposed to be overriden in specific nodes.
Override sv_copy() instead.
"""
CurrentEvents.new_event(BlenderEventsTypes.copy_node, self)
settings = get_original_node_color(self.id_data, original.name)
if settings is not None:
self.use_custom_color, self.color = settings
self.sv_copy(original)
self.n_id = ""
self.id_data.nodes_dict.load_node(self)
def sv_update_handler(scene):
"""
Update sverchok node groups on frame change events.
"""
if not has_frame_changed(scene):
return
CurrentEvents.new_event(BlenderEventsTypes.frame_change)
for ng in sverchok_trees():
try:
# print('sv_update_handler')
ng.process_ani()
except Exception as e:
print('Failed to update:', str(e)) # name,
def update(self):
"""
This method is called if collection of nodes or links of the tree was changed
First of all it checks is it worth bothering and then gives initiative to `update system`
"""
CurrentEvents.new_event(BlenderEventsTypes.tree_update, self)
# this is a no-op if there's no drawing
clear_exception_drawing_with_bgl(self.nodes)
if is_first_run():
return
if self.skip_tree_update or not self.sv_process:
return
self.sv_update()
self.has_changed = False
def init(self, context):
"""
this function is triggered upon node creation,
- throttle the node
- delegates further initialization information to sv_init
- sets node color
"""
CurrentEvents.new_event(BlenderEventsTypes.add_node, self)
ng = self.id_data
if ng.bl_idname in {'SverchCustomTreeType', 'SverchGroupTreeType'}:
ng.nodes_dict.load_node(self)
with ng.throttle_update():
try:
self.sv_init(context)
except Exception as err:
print('nodetree.node.sv_init failure - stare at the error message below')
sys.stderr.write('ERROR: %s\n' % str(err))
self.set_color()
def update(self):
'''
Tags tree for update for handle
get update list for debug info, tuple (fulllist, dictofpartiallists)
'''
CurrentEvents.new_event(BlenderEventsTypes.tree_update, self)
# this is a no-op if there's no drawing
clear_exception_drawing_with_bgl(self.nodes)
if is_first_run():
return
if self.skip_tree_update:
# print('throttled update from context manager')
return
if self.configuring_new_node or self.is_frozen() or not self.sv_process:
return
self.sv_update()
self.has_changed = False
def insert_link(self, link):
"""It will be triggered only if one socket is connected with another by user"""
CurrentEvents.new_event(BlenderEventsTypes.add_link_to_node, self)
def update(self):
CurrentEvents.new_event(BlenderEventsTypes.monad_tree_update, self)
affected_trees = {instance.id_data for instance in self.instances}
for tree in affected_trees:
tree.update()
def insert_link(self, link):
CurrentEvents.new_event(BlenderEventsTypes.add_link_to_node, self)
def update(self):
CurrentEvents.new_event(BlenderEventsTypes.node_update, self)
self.sv_update()
