def execute(operator, context):
# please not be confused: "operator" here references to
# SverchNodeAddOperator instance, and "self" references to
# SverchNodeItem instance.
operator.use_transform = True
operator.type = self.nodetype
node = operator.create_node(context)
apply_default_preset(node)
return {'FINISHED'}
def view_node(tree):
'''viewer map is a node attribute to inform to the operator how to visualize
the node data
it is a list with two items.
The first item is a list with tuples, every tuple need to have the node bl_idanme and offset to the previous node
The second item is a list with tuples, every tuple indicates a link.
The link is defined by two pairs of numbers, refering to output and input
The first number of every pair indicates the node being 0 the active node 1 the first needed node and so on
The second nmber of every pair indicates de socket index.
So to say: create a Viewer Draw with a offset of 60,0 and connect the first output to the vertices input
the node would need to have this:
viewer_map = [
("SvViewerDrawMk4", [60, 0])
], [
([0, 0], [1, 0])
]
'''
nodes = tree.nodes
links = tree.links
existing_node = nodes.active
node_list = [existing_node]
output_map = existing_node.viewer_map
previous_state = tree.sv_process
tree.sv_process = False
for node in output_map[0]:
bl_idname_new_node, offset = node
new_node = nodes.new(bl_idname_new_node)
apply_default_preset(new_node)
offset_node_location(node_list[-1], new_node, offset)
frame_adjust(node_list[-1], new_node)
node_list.append(new_node)
for link in output_map[1]:
output_s, input_s = link
links.new(node_list[output_s[0]].outputs[output_s[1]],
node_list[input_s[0]].inputs[input_s[1]])
tree.sv_process = previous_state
tree.update()
def add_connection(tree, bl_idname_new_node, offset):
nodes = tree.nodes
links = tree.links
output_map = get_output_sockets_map(nodes.active)
existing_node = nodes.active
if isinstance(bl_idname_new_node, str):
# single new node..
new_node = nodes.new(bl_idname_new_node)
apply_default_preset(new_node)
offset_node_location(existing_node, new_node, offset)
frame_adjust(existing_node, new_node)
outputs = existing_node.outputs
inputs = new_node.inputs
if existing_node.bl_idname in supported_mesh_viewers and bl_idname_new_node == 'SvIDXViewer28':
new_node.draw_bg = True
connect_idx_viewer(tree, existing_node, new_node)
elif bl_idname_new_node == 'SvStethoscopeNodeMK2':
# we can't determin thru cursor location which socket was nearest the rightclick
# maybe in the future.. or if someone does know :)
for socket in outputs:
if socket.hide:
continue
# connect_stethoscope to first visible output socket of active node
links.new(socket, inputs[0])
break
tree.update(
) # without this the node won't show output until an update is triggered manually
# existing_node.process_node(None)
elif bl_idname_new_node == 'SvViewerDrawMk4':
previous_state = tree.sv_process
tree.sv_process = False
if 'verts' in output_map:
links.new(outputs[output_map['verts']], inputs[0])
if 'faces' in output_map:
links.new(outputs[output_map['faces']], inputs[2])
if 'edges' in output_map:
links.new(outputs[output_map['edges']], inputs[1])
elif 'curve' in output_map:
eval_node = nodes.new('SvExEvalCurveNode')
apply_default_preset(eval_node)
offset_node_location(existing_node, eval_node, offset)
frame_adjust(existing_node, eval_node)
offset_node_location(eval_node, new_node, offset)
frame_adjust(eval_node, new_node)
links.new(outputs[output_map['curve']], eval_node.inputs[0])
links.new(eval_node.outputs[0], inputs[0])
links.new(eval_node.outputs[1], inputs[1])
elif 'surface' in output_map:
eval_node = nodes.new('SvExEvalSurfaceNode')
apply_default_preset(eval_node)
offset_node_location(existing_node, eval_node, offset)
frame_adjust(existing_node, eval_node)
offset_node_location(eval_node, new_node, offset)
frame_adjust(eval_node, new_node)
links.new(outputs[output_map['surface']], eval_node.inputs[0])
links.new(eval_node.outputs[0], inputs[0])
links.new(eval_node.outputs[1], inputs[1])
links.new(eval_node.outputs[2], inputs[2])
elif 'solid' in output_map:
tree.nodes.remove(new_node)
new_node = nodes.new('SvSolidViewerNode')
apply_default_preset(new_node)
offset_node_location(existing_node, new_node, offset)
frame_adjust(existing_node, new_node)
links.new(outputs[output_map['solid']], new_node.inputs[0])
tree.sv_process = previous_state
tree.update()
# existing_node.process_node(None)
else:
...
elif isinstance(bl_idname_new_node, list):
# maybe vdmk2 + indexviewer
...
