from .node_container_common import * from .xForm_containers import xFormGeometryObject from .misc_containers import InputExistingGeometryObject from .base_definitions import MantisNode from .utilities import (prRed, prGreen, prPurple, prWhite, prOrange, wrapRed, wrapGreen, wrapPurple, wrapWhite, wrapOrange,) def TellClasses(): return [ DeformerArmature, DeformerHook, DeformerMorphTarget, DeformerMorphTargetDeform, ] def trace_xForm_back(nc, socket): from .xForm_containers import xFormGeometryObject from .misc_containers import InputExistingGeometryObject from bpy.types import Object if (trace := trace_single_line(nc, socket)[0] ) : for i in range(len(trace)): # have to look in reverse, actually if ( isinstance(trace[ i ], xFormGeometryObject ) ) or ( isinstance(trace[ i ], InputExistingGeometryObject ) ): return trace[ i ].bGetObject() raise GraphError(wrapRed(f"No other object found for {nc}.")) # semi-duplicated from link_containers def GetxForm(nc): trace = trace_single_line_up(nc, "Deformer") for node in trace[0]: if (node.__class__ in [xFormGeometryObject, InputExistingGeometryObject]): return node raise GraphError("%s is not connected to a downstream xForm" % nc) class DeformerArmature(MantisNode): '''A node representing an armature deformer''' def __init__(self, signature, base_tree): super().__init__(signature, base_tree) inputs = [ "Input Relationship", "Armature Object", "Blend Vertex Group", "Invert Vertex Group", "Preserve Volume", "Use Multi Modifier", "Use Envelopes", "Use Vertex Groups", "Skinning Method", "Deformer", "Copy Skin Weights From" ] outputs = [ "Deformer" ] self.outputs.init_sockets(outputs) self.inputs.init_sockets(inputs) self.init_parameters(additional_parameters={"Name":None}) self.set_traverse([("Deformer", "Deformer")]) self.node_type = "LINK" self.prepared = True def GetxForm(self, socket="Deformer"): if socket == "Deformer": return GetxForm(self) else: trace_xForm_back(self, socket) # DUPLICATED FROM xForm_containers::xFormBone # DEDUP HACK HACK HACK HACK HACK def bGetParentArmature(self): from .xForm_containers import xFormArmature from .misc_containers import InputExistingGeometryObject from bpy.types import Object if (trace := trace_single_line(self, "Armature Object")[0] ) : for i in range(len(trace)): # have to look in reverse, actually if ( isinstance(trace[ i ], xFormArmature ) ): return trace[ i ].bGetObject() elif ( isinstance(trace[i], InputExistingGeometryObject)): if (ob := trace[i].bGetObject()).type == "ARMATURE": return ob raise RuntimeError(f"Cannot find armature for node {self}") return None #should do the trick... def bExecute(self, bContext = None,): self.executed = True def initialize_vgroups(self,): ob = self.GetxForm().bGetObject() armOb = self.bGetParentArmature() for b in armOb.data.bones: if b.use_deform == False: continue vg = ob.vertex_groups.get(b.name) if not vg: vg = ob.vertex_groups.new(name=b.name) num_verts = len(ob.data.vertices) vg.add(range(num_verts), 0, 'REPLACE') def copy_weights(self): # we'll use modifiers for this, maybe use GN for it in the future tho import bpy ob = self.GetxForm().bGetObject() try: copy_from = self.GetxForm(socket="Copy Skin Weights From") except GraphError: copy_from = None prRed(f"No object found for copying weights in {self}, continuing anyway.") m = ob.modifiers.new(type="DATA_TRANSFER", name="Mantis_temp_data_transfer") m.object = None; m.use_vert_data = True m.data_types_verts = {'VGROUP_WEIGHTS'} m.vert_mapping = 'POLYINTERP_NEAREST' m.layers_vgroup_select_src = 'ALL' m.layers_vgroup_select_dst = 'NAME' m.object = copy_from # m.use_object_transform = False # testing reveals that this is undesirable - since the objects may not have their transforms applied. ob.modifiers.move(len(ob.modifiers)-1, 0) # ob.data = ob.data.copy() if False: #MAYBE the mouse needs to be in the 3D viewport, no idea how to set this in an override # TODO: figure out how to apply this, context is incorrect because armature is still in pose mode original_active = bpy.context.active_object original_mode = original_active.mode bpy.ops.object.mode_set(mode='OBJECT') with bpy.context.temp_override(**{'active_object':ob, 'selected_objects':[ob, copy_from]}): # bpy.ops.object.datalayout_transfer(modifier=m.name) # note: this operator is used by the modifier or stand-alone in the UI # the poll for this operator is defined in blender/source/blender/editors/object/object_data_transfer.cc # and blender/source/blender/editors/object/object_modifier.cc # bpy.ops.object.modifier_apply(modifier=m.name, single_user=True) bpy.ops.object.datalayout_transfer(data_type='VGROUP_WEIGHTS') bpy.ops.object.data_transfer(data_type='VGROUP_WEIGHTS') bpy.ops.object.mode_set(mode=original_mode) def bFinalize(self, bContext=None): prGreen("Executing Armature Deform Node") mod_name = self.evaluate_input("Name") d = self.GetxForm().bGetObject().modifiers.new(mod_name, type='ARMATURE') if d is None: raise RuntimeError(f"Modifier was not created in node {self} -- the object is invalid.") self.bObject = d d.object = self.bGetParentArmature() props_sockets = { 'vertex_group' : ("Blend Vertex Group", ""), 'invert_vertex_group' : ("Invert Vertex Group", ""), 'use_deform_preserve_volume' : ("Preserve Volume", False), 'use_multi_modifier' : ("Use Multi Modifier", False), 'use_bone_envelopes' : ("Use Envelopes", False), 'use_vertex_groups' : ("Use Vertex Groups", False), } evaluate_sockets(self, d, props_sockets) # if (skin_method := self.evaluate_input("Skinning Method")) == "AUTOMATIC_HEAT": # This is bad and leads to somewhat unpredictable # behaviour, e.g. what object will be selected? What mode? # also bpy.ops is ugly and prone to error when used in # scripts. I don't intend to use bpy.ops when I can avoid it. import bpy self.initialize_vgroups() bContext.view_layer.depsgraph.update() ob = self.GetxForm().bGetObject() armOb = self.bGetParentArmature() deform_bones = [] for pb in armOb.pose.bones: if pb.bone.use_deform == True: deform_bones.append(pb) context_override = { 'active_object':ob, 'selected_objects':[ob, armOb], 'active_pose_bone':deform_bones[0], 'selected_pose_bones':deform_bones,} # # with bContext.temp_override(**{'active_object':armOb}): # bpy.ops.object.mode_set(mode='POSE') # bpy.ops.pose.select_all(action='SELECT') for b in armOb.data.bones: b.select = True with bContext.temp_override(**context_override): bpy.ops.paint.weight_paint_toggle() bpy.ops.paint.weight_from_bones(type='AUTOMATIC') bpy.ops.paint.weight_paint_toggle() for b in armOb.data.bones: b.select = False # # with bContext.temp_override(**{'active_object':armOb}): # bpy.ops.object.mode_set(mode='POSE') # bpy.ops.pose.select_all(action='DESELECT') # bpy.ops.object.mode_set(mode='OBJECT') # TODO: modify Blender to make this available as a Python API function. elif skin_method == "EXISTING_GROUPS": pass elif skin_method == "COPY_FROM_OBJECT": self.initialize_vgroups() self.copy_weights() class DeformerHook(MantisNode): '''A node representing a hook deformer''' def __init__(self, signature, base_tree): super().__init__(signature, base_tree) inputs = [ "Hook Target", "Index", "Deformer", ] outputs = [ "Deformer" ] # now set up the traverse target... self.outputs.init_sockets(outputs) self.inputs.init_sockets(inputs) self.init_parameters(additional_parameters={"Name":None}) self.set_traverse([("Deformer", "Deformer")]) self.node_type = "LINK" self.prepared = True def GetxForm(self, socket="Deformer"): if socket == "Deformer": return GetxForm(self) else: trace_xForm_back(self, socket) def bExecute(self, bContext = None,): self.executed = True def bFinalize(self, bContext=None): from bpy.types import Bone, PoseBone, Object prGreen(f"Executing Hook Deform Node: {self}") mod_name = self.evaluate_input("Name") target_node = self.evaluate_input('Hook Target') target = target_node.bGetObject(); subtarget = "" if isinstance(target, Bone) or isinstance(target, PoseBone): subtarget = target.name; target = target.id_data ob=self.GetxForm().bGetObject() reuse = False for m in ob.modifiers: if m.type == 'HOOK' and m.object == target and m.subtarget == subtarget: d = m; reuse = True; break else: d = ob.modifiers.new(mod_name, type='HOOK') if d is None: raise RuntimeError(f"Modifier was not created in node {self} -- the object is invalid.") self.get_target_and_subtarget(d, input_name="Hook Target") vertices_used=[] if reuse: # Get the verts in the list... filter out all the unneeded 0's vertices_used = list(d.vertex_indices) include_0 = 0 in vertices_used vertices_used = list(filter(lambda a : a != 0, vertices_used)) if include_0: vertices_used.append(0) # now we add the selected vertex to the list, too vertices_used.append(self.evaluate_input("Index")) d.vertex_indices_set(vertices_used) # todo: this should be able to take many indices in the future. # since this only takes a single index, I can always hack together a shape-key solution to tilt... # GN solution would work too, provided a separate object is made for it # I like this, it is perhaps a little innefficient but can be improved later on class DeformerMorphTarget(MantisNode): '''A node representing an armature deformer''' def __init__(self, signature, base_tree): super().__init__(signature, base_tree) inputs = [ "Relative to", "Object", "Deformer", "Vertex Group", ] outputs = [ "Deformer", "Morph Target", ] # now set up the traverse target... self.outputs.init_sockets(outputs) self.inputs.init_sockets(inputs) self.init_parameters(additional_parameters={"Name":None}) self.set_traverse([("Deformer", "Deformer")]) self.node_type = "LINK" self.prepared = True def GetxForm(self, trace_input="Object"): trace = trace_single_line(self, trace_input) for node in trace[0]: if (node.__class__ in [xFormGeometryObject, InputExistingGeometryObject]): return node raise GraphError("%s is not connected to an upstream xForm" % self) def bExecute(self, bContext = None,): prGreen("Executing Morph Target Node") ob = None; relative = None # do NOT check if the object exists here. Just let the next node deal with that. try: ob = self.GetxForm().bGetObject().name except Exception as e: # this will and should throw an error if it fails ob = self.GetxForm().evaluate_input("Name") if self.inputs["Relative to"].is_linked: try: relative = self.GetxForm("Relative to").bGetObject().name except Exception as e: # same here prRed(f"Execution failed at {self}: no relative object found for morph target, despite link existing.") raise e vg = self.evaluate_input("Vertex Group") if self.evaluate_input("Vertex Group") else "" # just make sure it is a string mt={"object":ob, "vertex_group":vg, "relative_shape":relative} self.parameters["Morph Target"] = mt self.parameters["Name"] = ob # this is redundant but it's OK since accessing the mt is tedious self.executed = True class DeformerMorphTargetDeform(MantisNode): '''A node representing an armature deformer''' def __init__(self, signature, base_tree): super().__init__(signature, base_tree) inputs = [ "Deformer", "Use Shape Key", "Use Offset", ] outputs = [ "Deformer", ] self.outputs.init_sockets(outputs) self.inputs.init_sockets(inputs) self.init_parameters(additional_parameters={"Name":None}) self.set_traverse([("Deformer", "Deformer")]) self.node_type = "LINK" self.prepared = True self.executed = True self.bObject = None setup_custom_props(self) def GetxForm(self): return GetxForm(self) # bpy.data.node_groups["Morph Deform.045"].nodes["Named Attribute.020"].data_type = 'FLOAT_VECTOR' # bpy.context.object.add_rest_position_attribute = True def gen_morph_target_modifier(self, context): # first let's see if this is a no-op targets = [] for k,v in self.inputs.items(): if "Target" in k: targets.append(v) if not targets: return # nothing to do here. # at this point we make the node tree from .geometry_node_graphgen import gen_morph_target_nodes m, props_sockets = gen_morph_target_nodes( self.evaluate_input("Name"), self.GetxForm().bGetObject(), targets, context, use_offset=self.evaluate_input("Use Offset")) self.bObject = m evaluate_sockets(self, m, props_sockets) finish_drivers(self) def gen_shape_key(self, context): # TODO: make this a feature of the node definition that appears only when there are no prior deformers - and shows a warning! # TODO: the below works well, but it is quite slow. It does not seem to have better performence. Its only advantage is export to FBX. # there are a number of things I need to fix here # - reuse shape keys if possible # - figure out how to make this a lot faster # - edit the xForm stuff to delete drivers from shape key ID's, since they belong to the Key, not the Object. # first check if we need to do anythign targets = [] for k,v in self.inputs.items(): if "Target" in k: targets.append(v) if not targets: return # nothing to do here from time import time start_time = time() from bpy import data xf = self.GetxForm() ob = xf.bGetObject() dg = context.view_layer.depsgraph dg.update() if xf.has_shape_keys == False: m = data.meshes.new_from_object(ob, preserve_all_data_layers=True, depsgraph=dg) ob.data = m ob.add_rest_position_attribute = True ob.shape_key_clear() ob.shape_key_add(name='Basis', from_mix=False) else: m = ob.data xf.has_shape_keys = True # using the built-in shapekey feature is actually a lot harder in terms of programming because I need... # min/max, as it is just not a feature of the GN version # to carry info from the morph target node regarding relative shapes and vertex groups and all that # the drivers may be more difficult to apply, too. # hafta make new geometry for the object and add shape keys and all that # the benefit to all this being exporting to game engines via .fbx # first make a basis shape key keys={} props_sockets={} for i, t in enumerate(targets): mt_node = t.links[0].from_node; sk_ob = mt_node.GetxForm().bGetObject() if sk_ob is None: sk_ob = data.objects.new(mt_node.evaluate_input("Name"), data.meshes.new_from_object(ob)) context.collection.objects.link(sk_ob) prOrange(f"WARN: no object found for f{mt_node}; creating duplicate of current object ") sk_ob = dg.id_eval_get(sk_ob) mt_name = sk_ob.name vg = mt_node.parameters["Morph Target"]["vertex_group"] if vg: mt_name = mt_name+"."+vg sk = ob.shape_key_add(name=mt_name, from_mix=False) # the shapekey data is absolute point data for each vertex, in order, very simple # SERIOUSLY IMPORTANT: # use the current position of the vertex AFTER SHAPE KEYS AND DEFORMERS # easiest way to do it is to eval the depsgraph # TODO: try and get it without depsgraph update, since that may be (very) slow sk_m = sk_ob.data#data.meshes.new_from_object(sk_ob, preserve_all_data_layers=True, depsgraph=dg) for j in range(len(m.vertices)): sk.data[j].co = sk_m.vertices[j].co # assume they match # data.meshes.remove(sk_m) sk.vertex_group = vg sk.slider_min = -10 sk.slider_max = 10 keys[mt_name]=sk props_sockets[mt_name]= ("Value."+str(i).zfill(3), 1.0) for i, t in enumerate(targets): mt_node = t.links[0].from_node; sk_ob = mt_node.GetxForm().bGetObject() if sk_ob is None: continue if rel := mt_node.parameters["Morph Target"]["relative_shape"]: sk = keys.get(mt_name) sk.relative_key = keys.get(rel) self.bObject = sk.id_data evaluate_sockets(self, sk.id_data, props_sockets) finish_drivers(self) prWhite(f"Initializing morph target took {time() -start_time} seconds") def bFinalize(self, bContext=None): prGreen(f"Executing Morph Deform node {self}") # if there is a not a prior deformer then there should be an option to use plain 'ol shape keys # GN is always desirable as an option though because it can be baked & many other reasons use_shape_keys = self.evaluate_input("Use Shape Key") if use_shape_keys: # check and see if we can. if self.inputs.get("Deformer"): # I guess this isn't available in some node group contexts... bad. FIXME if (links := self.inputs["Deformer"].links): if not links[0].from_node.parameters.get("Use Shape Key"): use_shape_keys = False elif links[0].from_node.parameters.get("Use Shape Key") == False: use_shape_keys = False self.parameters["Use Shape Key"] = use_shape_keys if use_shape_keys: self.gen_shape_key(bContext) else: self.gen_morph_target_modifier(bContext)