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Copy pathgenerate_ue_mat_nodes.py
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generate_ue_mat_nodes.py
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from random import random
from typing import List
import uuid
from .node_map import NodeClassMap
from .node_map import NodeNameMap
gl_nodes = []
GlobalName = "MaterialGraphNode_{}"
ClassOption = "Class={}"
NameOption = 'Name="{}"'
HeadTemplate = 'Begin Object {} {}\n'
EndTemplate = 'End Object\n'
MatExpTemplate = "\tMaterialExpression={}\'\"{}\"\'\n"
NodePosTemplate = "\tNodePosX={}\n\tNodePosY={}\n"
MatFuncTemplate = "\t\tMaterialFunction=MaterialFunction\'\"{}\"\'\n"
FuncInputTemplate = "\t\tFunctionInputs({})=({})\n"
CustomInputTemplate = "\t\tInputs({})=(InputName=\"{}\",{})\n"
FuncExpInputTemplate = "{}=(Expression={}\'\"{}.{}\"\')"
InputTemplate = "\t\t{}=(Expression={}\'\"{}.{}\"\')\n"
MatContentExpTemplate = "Expression={Type}\'\"{Graph}.{Name}\"\'"
LinkTemplate = "{Graph} {UUID},"
LinkedToTemplate = "LinkedTo=({}),"
PinTemplate = "\tCustomProperties Pin (PinId={UUID},{LinkStr})\n"
gl_uuid_namespace = uuid.uuid1()
gl_height = 0
def get_uuid(name) -> str:
global gl_uuid_namespace
return str(uuid.uuid3(namespace=gl_uuid_namespace, name=name).hex).upper()
gl_node_map = {}
gl_node_socket_map = {}
def _get_node_names(id, node) -> List[str]:
global gl_node_map
if not (node in gl_node_map):
node_type = ""
if node.type in NodeClassMap:
node_type = NodeNameMap[node.type]
elif node.operation in NodeClassMap:
node_type = NodeNameMap[node.operation]
graph_name = GlobalName.format(str(id))
node_name = node_type + '_' + str(id)
if node.type == "REROUTE":
insert_index = graph_name.find("_")
graph_name = graph_name[:insert_index] + "_Knot" + graph_name[insert_index:]
gl_node_map[node] = [graph_name, node_name, node_type].copy()
return gl_node_map[node]
def _gen_linked_infos(id, node):
'''
returns:
node_names[0]: all input sockets linked node graph names
node_names[1]: all output sockets linked node graph names
inputs_uuid: first uuid is itself, others are linked sockets uuid
outputs_uuid: first uuid is itself, others are linked sockets uuid
'''
global gl_node_map
global gl_node_socket_map
ret_in_node_names = []
ret_out_node_names = []
# input and output pins array
# the first uuid is itself
# others are linkto socket uuid
ret_input_pins_uuid = []
ret_output_pins_uuid = []
# print(node.name)
for input in node.inputs:
# print(type(input))
if input.enabled:
pin_info = []
# get current socket pin uuid
pin_uuid = ''
if not input in gl_node_socket_map:
uuid_name = 'input' + node.type + node.name + input.identifier
pin_uuid = get_uuid(uuid_name)
gl_node_socket_map[input] = pin_uuid
else:
pin_uuid = gl_node_socket_map[input]
pin_info.append(pin_uuid)
# process input linked socket
if input.is_linked:
for link in input.links:
if not link.from_node in gl_nodes or not link.from_node.type in NodeClassMap:
ret_in_node_names.append({'_CONSTANT_' : {"Type": input.type, "Value": input.default_value}})
continue
# get linked node info
to_node_names = []
if not link.from_node in gl_node_map:
id += 1
ret_in_node_names.append(_get_node_names(id+1, link.from_node))
link_to_pin_uuid = ''
if not link.from_socket in gl_node_socket_map:
uuid_name = node.type + node.name + input.identifier + link.from_node.name + link.from_socket.identifier
link_to_pin_uuid = get_uuid(uuid_name)
gl_node_socket_map[link.from_socket] = link_to_pin_uuid
else:
link_to_pin_uuid = gl_node_socket_map[link.from_socket]
if (link_to_pin_uuid != ''):
pin_info.append(link_to_pin_uuid)
# constant value input
else:
# if contant, will create a new contant value node in ue
ret_in_node_names.append({'_CONSTANT_' : {"Type": input.type, "Value": input.default_value}})
ret_input_pins_uuid.append(pin_info)
# todo: outputs 要去ue里看看一个节点多个输出的pin是怎么样的
for output in node.outputs:
# only export linked output socket
if output.enabled:
pin_info = []
# get current socket pin uuid
pin_uuid = ''
if not output in gl_node_socket_map:
uuid_name = 'output' + node.type + node.name + output.identifier
pin_uuid = get_uuid(uuid_name)
gl_node_socket_map[output] = pin_uuid
else:
pin_uuid = gl_node_socket_map[output]
pin_info.append(pin_uuid)
if output.is_linked:
for link in output.links:
if not link.to_node in gl_nodes or not link.to_node.type in NodeClassMap:
continue
# get linked node info
to_node_names = []
if not link.to_node in gl_node_map:
id += 1
ret_out_node_names.append(_get_node_names(id+1, link.to_node))
link_to_pin_uuid = ''
if not link.to_socket in gl_node_socket_map:
uuid_name = node.type + node.name + output.identifier + link.to_node.name + link.to_socket.identifier
link_to_pin_uuid = get_uuid(uuid_name)
gl_node_socket_map[link.to_socket] = link_to_pin_uuid
else:
link_to_pin_uuid = gl_node_socket_map[link.to_socket]
if (link_to_pin_uuid != ''):
pin_info.append(link_to_pin_uuid)
# constant value input
else:
# if not connect
#ret_output_pins_uuid.append({'_CONSTANT_' : {"Type": output.type, "Value": None}})
pass
ret_output_pins_uuid.append(pin_info)
# print(ret_node_names)
# print(ret_input_pins_uuid)
# print(ret_output_pins_uuid)
return {'node_names': [ret_in_node_names, ret_out_node_names], 'inputs_uuid': ret_input_pins_uuid, 'outputs_uuid': ret_output_pins_uuid}
def _exp_reroute(node, linked_info):
pin = ""
if node.inputs[0].is_linked:
for input in linked_info['inputs_uuid']:
links_pin_str = ''
for i in range(1, len(input)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][i-1][0], UUID=input[i])
pin += PinTemplate.format(UUID=input[0], LinkStr=LinkedToTemplate.format(links_pin_str))
if node.outputs[0].is_linked:
for output in linked_info['outputs_uuid']:
links_pin_str = ''
for i in range(1, len(output)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][i-1][0], UUID=output[i])
pin += PinTemplate.format(UUID=output[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
return { "Value": "", "Pin": pin, "Constant":[], "Replace": [] }
def _exp_constant(type, value, linkto_names, linkto_uuid, location):
node_expression : str = ""
graph_name = GlobalName.format(str(int(random()*1000) + int(random()*999)))
node_type = NodeNameMap[type]
object_name = node_type + '_' + str(int(random()*99))
NodeNameStr = NameOption.format(object_name)
#1 Head
node_expression = HeadTemplate.format(
ClassOption.format("/Script/UnrealEd.MaterialGraphNode"),
NameOption.format(graph_name))
#2 Head
node_expression += "\t"
node_expression += HeadTemplate.format(
ClassOption.format(node_type),
NodeNameStr)
node_expression += "\t"
node_expression += EndTemplate
#2 End
#3 Head
node_expression += "\t"
node_expression += HeadTemplate.format(
"",
NodeNameStr)
# todo: change to swtich
if type == 'RGB':
node_expression += "\t\tConstant=(R=%.6f,G=%.6f,B=%.6f,A=%.6f)\n"%tuple(value)
elif type == 'RGBA':
node_expression += "\t\tConstant=(R=%.6f,G=%.6f,B=%.6f,A=%.6f)\n"%tuple(value)
elif type == 'VECTOR':
node_expression += "\t\tConstant=(R=%.6f,G=%.6f,B=%.6f,A=1.0)\n"%tuple(value)
elif type == 'VALUE':
node_expression += "\t\tR=%.6f\n"%(value)
elif type == '_NORMALWS' or type == '_CAMVECWS' or type == '_CAMERA_POS' or type == '_OBJ_POS':
pass
node_expression += "\t"
node_expression += EndTemplate
#3 End
node_expression += MatExpTemplate.format(node_type, object_name)
node_expression += NodePosTemplate.format(str(int(location.x-60)), str(int(gl_height - location.y)))
# CustomProperties
output_uuid = get_uuid(graph_name + object_name)
links_pin_str = LinkTemplate.format(Graph=linkto_names[0], UUID=linkto_uuid)
node_expression += PinTemplate.format(UUID=output_uuid, LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
node_expression += EndTemplate
#1 End
return node_expression, [graph_name, object_name, node_type], output_uuid
def _exp_rgb(node, linked_info):
# if not node.get_out_nodes()[0].is_linked:
value = node.outputs[0].default_value
pin = ""
if node.outputs[0].is_linked:
for output in linked_info['outputs_uuid']:
links_pin_str = ''
for i in range(1, len(output)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][i-1][0], UUID=output[i])
pin += PinTemplate.format(UUID=output[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
return { "Value": "\t\tConstant=(R=%.6f,G=%.6f,B=%.6f,A=%.6f)\n"%tuple(value), "Pin": pin, "Constant":[], "Replace": [] }
def _exp_value(node, linked_info):
# if not node.get_out_nodes()[0].is_linked:
value = node.outputs[0].default_value
pin = ""
if node.outputs[0].is_linked:
for output in linked_info['outputs_uuid']:
links_pin_str = ''
for i in range(1, len(output)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][i-1][0], UUID=output[i])
pin += PinTemplate.format(UUID=output[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
return { "Value": "\t\tR=%.6f\n"%(value), "Pin": pin, "Constant":[], "Replace": [] }
Transform_Source_Type = {
"WORLD" : "TRANSFORMSOURCE_World",
"OBJECT" : "TRANSFORMSOURCE_Local",
"CAMERA" : "TRANSFORMSOURCE_Camera",
"VIEW" : "TRANSFORMSOURCE_View"
}
Transform_Target_Type = {
"WORLD" : "TRANSFORM_World",
"OBJECT" : "TRANSFORM_Local",
"CAMERA" : "TRANSFORM_Camera",
"VIEW" : "TRANSFORM_View"
}
TransformPos_Source_Type = {
"WORLD" : "TRANSFORMPOSSOURCE_World",
"OBJECT" : "TRANSFORPOSMSOURCE_Local",
"CAMERA" : "TRANSFORPOSMSOURCE_Camera",
"VIEW" : "TRANSFORMPOSSOURCE_View"
}
TransformPos_Target_Type = {
"WORLD" : "TRANSFORMPOSSOURCE_World",
"OBJECT" : "TRANSFORMPOSSOURCE_Local",
"CAMERA" : "TRANSFORMPOSSOURCE_Camera",
"VIEW" : "TRANSFORMPOSSOURCE_View"
}
def _exp_vec_transform(node, linked_info):
exp = ''
pin = ''
exp_constants = []
exp += "\t\tTransformSourceType=%s\n"%(Transform_Source_Type[node.convert_from])
exp += "\t\tTransformType=%s\n"%(Transform_Target_Type[node.convert_to])
for i, inputs in enumerate(linked_info['inputs_uuid']):
links_pin_str = ''
linkto_type = ''
linkto_graph = ''
linkto_node = ''
# if not connected, continue
if '_CONSTANT_' in linked_info['node_names'][0][i]:
continue
else:
linkto_type = linked_info['node_names'][0][i][2]
linkto_graph = linked_info['node_names'][0][i][0]
linkto_node = linked_info['node_names'][0][i][1]
for j in range(1, len(inputs)):
links_pin_str += LinkTemplate.format(Graph=linkto_graph, UUID=inputs[j])
pin += PinTemplate.format(UUID=inputs[0], LinkStr=LinkedToTemplate.format(links_pin_str))
exp += FuncInputTemplate.format(int(i), FuncExpInputTemplate.format("Input", linkto_type, linkto_graph, linkto_node))
if node.outputs[0].is_linked:
for output in linked_info['outputs_uuid']:
links_pin_str = ''
for i in range(1, len(output)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][i-1][0], UUID=output[i])
pin += PinTemplate.format(UUID=output[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
return {"Value": exp, "Pin": pin, "Constant": exp_constants, "Replace": []}
def _internal_vect_transform(type, fromtype, totype, from_names, linkto_names, linkto_uuids, location):
node_expression : str = ""
graph_name = GlobalName.format(str(int(random()*3000) + int(random()*999)))
node_type = NodeNameMap[type]
object_name = node_type + '_' + str(int(random()*99))
NodeNameStr = NameOption.format(object_name)
#1 Head
node_expression = HeadTemplate.format(
ClassOption.format("/Script/UnrealEd.MaterialGraphNode"),
NameOption.format(from_names[0]))
#2 Head
node_expression += "\t"
node_expression += HeadTemplate.format(
ClassOption.format(node_type),
NodeNameStr)
node_expression += "\t"
node_expression += EndTemplate
#2 End
#3 Head
node_expression += "\t"
node_expression += HeadTemplate.format(
"",
NodeNameStr)
if type == "VECT_TRANSFORM":
node_expression += "\t\tTransformSourceType=%s\n"%(Transform_Source_Type[fromtype])
node_expression += "\t\tTransformType=%s\n"%(Transform_Target_Type[totype])
node_expression += InputTemplate.format("Input", from_names[2], from_names[0], from_names[1])
elif type == "_POINT_TRANSFORM":
node_expression += "\t\tTransformSourceType=%s\n"%(TransformPos_Source_Type[fromtype])
node_expression += "\t\tTransformType=%s\n"%(TransformPos_Target_Type[totype])
node_expression += InputTemplate.format("Input", from_names[2], from_names[0], from_names[1])
node_expression += "\t"
node_expression += EndTemplate
#3 End
node_expression += MatExpTemplate.format(node_type, object_name)
node_expression += NodePosTemplate.format(str(int(location.x-60)), str(int(gl_height - location.y)))
# CustomProperties
input_uuid = get_uuid('intput' + graph_name + object_name)
output_uuid = get_uuid('output' + graph_name + object_name)
links_pin_str = LinkTemplate.format(Graph=graph_name, UUID=output_uuid)
node_expression += PinTemplate.format(UUID=input_uuid, LinkStr=LinkedToTemplate.format(links_pin_str))
links_pin_str = ''
for i in range(1, len(linkto_uuids)):
links_pin_str += LinkTemplate.format(Graph=linkto_names[i-1][0], UUID=linkto_uuids[i])
node_expression += PinTemplate.format(UUID=linkto_uuids[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
node_expression += EndTemplate
#1 End
return node_expression, [graph_name, object_name, node_type], input_uuid, output_uuid
# todo:
# figure out the index of uvmap in blender
# (we can only know the name of uvmap, but ue need index)
# todo: append zero value to z channel to make a float3
def _exp_uvmap(node, linked_info):
exp = ''
pin = ''
for i, outputs in enumerate(linked_info['outputs_uuid']):
links_pin_str = ''
for j in range(1, len(outputs)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][j-1][0], UUID=outputs[j])
pin += PinTemplate.format(UUID=outputs[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
return {"Value": exp, "Pin": pin, "Constant": [], "Replace": []}
# ue can only solve one vertex color
def _exp_vertex_color(node, linked_info):
exp = ''
pin = ''
temp_pin = []
for i, outputs in enumerate(linked_info['outputs_uuid']):
links_pin_str = ''
for j in range(1, len(outputs)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][j-1][0], UUID=outputs[j])
temp_pin.append(PinTemplate.format(UUID=outputs[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str)))
# For Alpha Output
insert_str = "\tCustomProperties Pin (PinId=%s,Direction=\"EGPD_Output\",)\n"%(get_uuid(str(linked_info['outputs_uuid'][0])))
for i in range(0, 3):
temp_pin.insert(i+1, insert_str)
for p in temp_pin:
pin += p
return {"Value": exp, "Pin": pin, "Constant": [], "Replace": []}
# Object Info node only have one valid socket: Location
def _exp_objinfo(node, linked_info):
exp = ''
pin = ''
outputs = linked_info['outputs_uuid'][0]
links_pin_str = ''
for j in range(1, len(outputs)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][j-1][0], UUID=outputs[j])
pin += PinTemplate.format(UUID=outputs[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
return {"Value": exp, "Pin": pin, "Constant": [], "Replace": []}
def _exp_single_output(linkto_names, linkto_uuids, type, location, index = 0, use_transform = False, transform_type = "", from_type = "", to_type = ""):
node_expression : str = ""
graph_name = GlobalName.format(str(int(random()*1000) + int(random()*999)))
node_type = NodeNameMap[type]
object_name = node_type + '_' + str(int(random()*99))
NodeNameStr = NameOption.format(object_name)
#1 Head
node_expression = HeadTemplate.format(
ClassOption.format("/Script/UnrealEd.MaterialGraphNode"),
NameOption.format(graph_name))
#2 Head
node_expression += "\t"
node_expression += HeadTemplate.format(
ClassOption.format(node_type),
NodeNameStr)
node_expression += "\t"
node_expression += EndTemplate
#2 End
#3 Head
node_expression += "\t"
node_expression += HeadTemplate.format(
"",
NodeNameStr)
node_expression += "\t"
node_expression += EndTemplate
#3 End
node_expression += MatExpTemplate.format(node_type, object_name)
node_expression += NodePosTemplate.format(str(int(location.x-60)), str(int(gl_height - location.y)))
# CustomProperties
t_exp = ""
if use_transform:
t_linkto_names = []
links_num = len(linkto_uuids)-1
for i in range(index, index+links_num):
t_linkto_names.append(linkto_names[i])
t_exp, t_names, i_uuid, o_uuid = _internal_vect_transform(transform_type, from_type, to_type, [graph_name, object_name, node_type], t_linkto_names, linkto_uuids, location)
links_pin_str = LinkTemplate.format(Graph=t_names[0], UUID=i_uuid)
node_expression += PinTemplate.format(UUID=o_uuid, LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
node_expression = node_expression.replace(graph_name, t_names[0], 1)
graph_name = t_names[0]
else:
links_pin_str = ''
links_num = len(linkto_uuids)-1
for i in range(index, index+links_num):
links_pin_str += LinkTemplate.format(Graph=linkto_names[i][0], UUID=linkto_uuids[i-index])
node_expression += PinTemplate.format(UUID=linkto_uuids[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
node_expression += EndTemplate
#1 End
node_expression = t_exp + node_expression
return node_expression, [graph_name, linkto_uuids[0]] # change output linked pin info
def _exp_camera_vector(node, linked_info):
exp = ''
pin = ''
temp_pin = []
exp_content = []
# todo: wrong impl, View Vector is Camera Vector in Camera Space
camera_vector_out = linked_info['outputs_uuid'][0]
links_pin_str = ''
cam_vec_out_names = []
for j in range(1, len(camera_vector_out)):
cam_vec_out_names.append(linked_info['node_names'][1][j-1])
t_names = None
if len(linked_info['outputs_uuid'][0]) > 1:
t_exp, t_names, i_uuid, o_uuid = _internal_vect_transform('VECT_TRANSFORM', 'WORLD', 'CAMERA', _get_node_names(-1, node), cam_vec_out_names, camera_vector_out, node.location)
exp_content.append(t_exp)
# swtich output uuid and graph name
links_pin_str += LinkTemplate.format(Graph=_get_node_names(-1, node)[0], UUID=i_uuid)
pin += PinTemplate.format(UUID=o_uuid, LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
# View Z Depth connected
replace = []
if len(linked_info['outputs_uuid'][1]) > 1:
t_exp, t_replace = _exp_single_output(linked_info['node_names'][1], linked_info['outputs_uuid'][1], "_CAMERA_DEPTH", node.location, len(linked_info['outputs_uuid'][0])-1)
t_replace.insert(0, _get_node_names(-1, node)[0])
replace.append(t_replace)
exp_content.append(t_exp)
# todo: View Distance connected
# distance of point to camera position
# View Distance maybe need custom MF
for p in temp_pin:
pin += p
return {"Value": exp, "Pin": pin, "Constant": exp_content, "InsertNames": t_names, "Replace": replace}
def _exp_texcoord(node, linked_info):
exp = ''
pin = ''
exp_content = []
# generated is not existed in ue
outputs = linked_info['outputs_uuid'][0]
if len(outputs) > 1:
links_pin_str = ''
for j in range(1, len(outputs)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][j-1][0], UUID=outputs[j])
pin += PinTemplate.format(UUID=outputs[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
replace = []
# Object space normal
name_index = len(linked_info['outputs_uuid'][0])-1
if len(linked_info['outputs_uuid'][1]) > 1:
t_exp, t_replace = _exp_single_output(linked_info['node_names'][1], linked_info['outputs_uuid'][1], "_NORMALOS", node.location, name_index,
True, "VECT_TRANSFORM", "WORLD", "OBJECT")
t_replace.insert(0, _get_node_names(-1, node)[0])
replace.append(t_replace)
exp_content.append(t_exp)
# uv
name_index += len(linked_info['outputs_uuid'][1])-1
if len(linked_info['outputs_uuid'][2]) > 1:
t_exp, t_replace = _exp_single_output(linked_info['node_names'][1], linked_info['outputs_uuid'][2], "_UV", node.location, name_index)
t_replace.insert(0, _get_node_names(-1, node)[0])
replace.append(t_replace)
exp_content.append(t_exp)
# object space position
name_index += len(linked_info['outputs_uuid'][2])-1
if len(linked_info['outputs_uuid'][3]) > 1:
t_exp, t_replace = _exp_single_output(linked_info['node_names'][1], linked_info['outputs_uuid'][3], "_OBJ_POS", node.location, name_index,
True, "_POINT_TRANSFORM", "WORLD", "OBJECT")
t_replace.insert(0, _get_node_names(-1, node)[0])
replace.append(t_replace)
exp_content.append(t_exp)
# camera space position
name_index += len(linked_info['outputs_uuid'][3])-1
if len(linked_info['outputs_uuid'][4]) > 1:
t_exp, t_replace = _exp_single_output(linked_info['node_names'][1], linked_info['outputs_uuid'][4], "_CAM_POS", node.location, name_index,
True, "_POINT_TRANSFORM", "WORLD", "CAMERA")
t_replace.insert(0, _get_node_names(-1, node)[0])
replace.append(t_replace)
exp_content.append(t_exp)
# windows uv
name_index += len(linked_info['outputs_uuid'][4])-1
if len(linked_info['outputs_uuid'][5]) > 1:
t_exp, t_replace = _exp_single_output(linked_info['node_names'][1], linked_info['outputs_uuid'][5], "_WIN_POS", node.location, name_index)
t_replace.insert(0, _get_node_names(-1, node)[0])
replace.append(t_replace)
exp_content.append(t_exp)
# todo: relection
return {"Value": exp, "Pin": pin, "Constant": exp_content, "Replace": replace}
def _exp_incomming(graph, linkto_names, linkto_uuids, location, index):
node_expression : str = ""
graph_name = GlobalName.format(str(int(random()*1000) + int(random()*999)))
node_type = NodeNameMap["_INCOMMING"]
object_name = node_type + '_' + str(int(random()*99))
NodeNameStr = NameOption.format(object_name)
#1 Head
node_expression = HeadTemplate.format(
ClassOption.format("/Script/UnrealEd.MaterialGraphNode"),
NameOption.format(graph_name))
#2 Head
node_expression += "\t"
node_expression += HeadTemplate.format(
ClassOption.format(node_type),
NodeNameStr)
node_expression += "\t"
node_expression += EndTemplate
#2 End
campos_input_uuid = get_uuid(graph + "_incomming_camera_position")
pixpos_input_uuid = get_uuid(graph + "_incomming_pixel_position")
constant_str_1, constant_names_1, constant_uuid_1 = _exp_constant("_CAMERA_POS", -1, [graph_name, object_name, node_type], campos_input_uuid, location)
constant_str_2, constant_names_2, constant_uuid_2 = _exp_constant("_OBJ_POS", -1, [graph_name, object_name, node_type], pixpos_input_uuid, location)
#3 Head
node_expression += "\t"
node_expression += HeadTemplate.format(
"",
NodeNameStr)
node_expression += "\t\tCode=\"return normalize(camera_position - pixel_position);\"\n"
node_expression += "\t\tDescription=\"Geometry_incomming\"\n"
node_expression += CustomInputTemplate.format(0, "camera_position", FuncExpInputTemplate.format("Input", constant_names_1[2], constant_names_1[0], constant_names_1[1]))
node_expression += CustomInputTemplate.format(1, "pixel_position", FuncExpInputTemplate.format("Input", constant_names_2[2], constant_names_2[0], constant_names_2[1]))
node_expression += "\t"
node_expression += EndTemplate
#3 End
node_expression += MatExpTemplate.format(node_type, object_name)
node_expression += NodePosTemplate.format(str(int(location.x-60)), str(int(gl_height - location.y)))
# input
links_pin_str = LinkTemplate.format(Graph=constant_names_1[0], UUID=constant_uuid_1)
node_expression += PinTemplate.format(UUID=campos_input_uuid + ",PinName=\"%s\""%("camera_position"), LinkStr=LinkedToTemplate.format(links_pin_str))
links_pin_str = LinkTemplate.format(Graph=constant_names_2[0], UUID=constant_uuid_2)
node_expression += PinTemplate.format(UUID=campos_input_uuid + ",PinName=\"%s\""%("pixel_position"), LinkStr=LinkedToTemplate.format(links_pin_str))
# output
links_pin_str = ''
links_num = len(linkto_uuids)-1
for i in range(index, index+links_num):
links_pin_str += LinkTemplate.format(Graph=linkto_names[i][0], UUID=linkto_uuids[i-index])
node_expression += PinTemplate.format(UUID=linkto_uuids[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
node_expression += EndTemplate
#1 End
node_expression = constant_str_2 + node_expression
node_expression = constant_str_1 + node_expression
return node_expression, [graph_name, linkto_uuids[0]]
def _exp_geometry(node, linked_info):
exp = ''
pin = ''
exp_content = []
replace = []
outputs = linked_info['outputs_uuid'][0]
if len(outputs) > 1:
links_pin_str = ''
for j in range(1, len(outputs)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][j-1][0], UUID=outputs[j])
pin += PinTemplate.format(UUID=outputs[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
# normal
name_index = len(linked_info['outputs_uuid'][0])-1
if len(linked_info['outputs_uuid'][1]) > 1:
t_exp, t_replace = _exp_single_output(linked_info['node_names'][1], linked_info['outputs_uuid'][1], "_NORMALWS", node.location, name_index)
t_replace.insert(0, _get_node_names(-1, node)[0])
replace.append(t_replace)
exp_content.append(t_exp)
# tangent
name_index += len(linked_info['outputs_uuid'][1])-1
if len(linked_info['outputs_uuid'][2]) > 1:
t_exp, t_replace = _exp_single_output(linked_info['node_names'][1], linked_info['outputs_uuid'][2], "_TANGENTWS", node.location, name_index)
t_replace.insert(0, _get_node_names(-1, node)[0])
replace.append(t_replace)
exp_content.append(t_exp)
# true normal
name_index += len(linked_info['outputs_uuid'][2])-1
if len(linked_info['outputs_uuid'][3]) > 1:
t_exp, t_replace = _exp_single_output(linked_info['node_names'][1], linked_info['outputs_uuid'][3], "_VERTEX_NORMAlWS", node.location, name_index)
t_replace.insert(0, _get_node_names(-1, node)[0])
replace.append(t_replace)
exp_content.append(t_exp)
# incomming
name_index += len(linked_info['outputs_uuid'][3])-1
if len(linked_info['outputs_uuid'][4]) > 1:
t_exp, t_replace = _exp_incomming(_get_node_names(-1, node)[0], linked_info['node_names'][1], linked_info['outputs_uuid'][4], node.location, name_index)
t_replace.insert(0, _get_node_names(-1, node)[0])
replace.append(t_replace)
exp_content.append(t_exp)
return {"Value": exp, "Pin": pin, "Constant": exp_content, "Replace": replace}
# https://en.wikipedia.org/wiki/Blend_modes
# you can find the algorithm on https://github.com/blender/blender/blob/master/source/blender/blenkernel/intern/material.c#L1592
# https://www.deepskycolors.com/archivo/2010/04/21/formulas-for-Photoshop-blending-modes.html
# some color convert code on https://www.chilliant.com/rgb2hsv.html also ue official custom node
convert_func_code = "\
struct Functions\\n\
{\\n\
\\tfloat3 rgb_to_hsv(float3 c)\\n\
\\t{\\n\
\\t\\tfloat4 K = float4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);\\n\
\\t\\tfloat4 p = lerp(float4(c.bg, K.wz), float4(c.gb, K.xy), step(c.b, c.g));\\n\
\\t\\tfloat4 q = lerp(float4(p.xyw, c.r), float4(c.r, p.yzx), step(p.x, c.r));\\n\
\\t\\tfloat d = q.x - min(q.w, q.y);\\n\
\\t\\tfloat e = .0000001;\\n\
\\t\\treturn float3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);\\n\
\\t}\\n\
\\tfloat3 hsv_to_rgb(float3 hsv)\\n\
\\t{\\n\
\\t\\tfloat4 K = float4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0);\\n\
\\t\\tfloat3 p = abs(frac(hsv.xxx + K.xyz) * 6.0 - K.www);\\n\
\\t\\treturn hsv.z * lerp(K.xxx, saturate(p - K.xxx), hsv.y);\\n\
\\t}\\n\
};\\n\
Functions f;\\n"
Mix_BlendeType_Code = {
'MIX' : "return lerp(a, b, t);",
'MULTIPLY' : "return a * (b * t);",
'DIVIDE' : "return a / (b * t);",
'ADD' : "return a + (b * t);",
'SUBTRACT' : "return a - (b * t);",
'SCREEN' : "float tm = 1 - t;\\nreturn 1 - (tm + t * (1 - b)) * (1 - a);",
'DIFFERENCE' : "float tm = 1 - t;\\nreturn tm * a + t * abs(a - b);",
'DARKEN' : "float tm = 1 - t;\\nreturn t * min(a, b) + tm * a;",
'LIGHTEN' : "return max(a, t*b);",
'DODGE' : "return a/(1-t*b);",
'BURN' : "float tm = 1 - t;\\nreturn 1-(1-a)/(tm+t*b);",
'SOFT_LIGHT' : "float tm = 1 - t;\\nfloat3 sc = 1 - (1 - a) * (1 - b);\\nreturn tm * a + t * ((1 - a) * b * a + a * sc);",
'LINEAR_LIGHT' : "return a + t * ( 2 * (b - 0.5f));",
###
'OVERLAY' : "\
struct Functions\\n\
{\\n\
\\tfloat overlay(float a, float b, float t)\\n\
\\t{\\n\
\\t\\tfloat tm = 1 - t;\\n\
\\t\\treturn a < 0.5 ? a*(tm+2*t*b) : 1-(tm+2*t*(1-b))*(1-a);\\n\
\\t}\\n\
\\tfloat3 overlay(float3 a, float3 b, float t)\\n\
\\t{\\n\
\\t\\treturn float3(overlay(a.x, b.x, t), overlay(a.y, b.y, t), overlay(a.z, b.z, t));\\n\
\\t}\\n\
};\\n\
Functions f;\\n\
return f.overlay(a, b, t);\\n",
###
'VALUE' : convert_func_code + "\
float tm = 1 - t;\\n\
float3 a_hsv = f.rgb_to_hsv(a);\\n\
float3 b_hsv = f.rgb_to_hsv(b);\\n\
return f.hsv_to_rgb(float3(a_hsv.x, a_hsv.y, tm*a_hsv.z + t*b_hsv.z));",
###
'COLOR' : convert_func_code + "\
float tm = 1 - t;\\n\
float3 b_hsv = f.rgb_to_hsv(b);\\n\
if (b_hsv.y != 0)\\n\
{\
\\tfloat3 a_hsv = f.rgb_to_hsv(a);\\n\
\\tfloat3 tempc = f.hsv_to_rgb(float3(b_hsv.x, b_hsv.y, a_hsv.z));\\n\
\\ta = tm * a + t * tempc;\\n\
}\
return a;",
###
'HUE' : convert_func_code + "\
float tm = 1 - t;\\n\
float3 b_hsv = f.rgb_to_hsv(b);\\n\
float3 a_hsv = f.rgb_to_hsv(a);\\n\
float3 tmp = f.hsv_to_rgb(float3(b_hsv.x, a_hsv.y, a_hsv.z));\\n\
return b_hsv.y != 0 ? tm*a+t*tmp : a;",
###
'SATURATION' : convert_func_code + "\
float tm = 1 - t;\\n\
float3 a_hsv = f.rgb_to_hsv(a);\\n\
float3 b_hsv = f.rgb_to_hsv(b);\\n\
float3 tmp = f.hsv_to_rgb(float3(a_hsv.x, (tm*a_hsv.y+t*b_hsv.y), a_hsv.z));\\n\
return a_hsv.y != 0 ? tmp : a;"
}
def _exp_mix(node, linked_info):
exp = ''
pin = ''
exp_constants = []
blend_type = node.blend_type
var_name = ['t', 'a', 'b']
if blend_type in Mix_BlendeType_Code:
exp += "\t\tCode=\"%s\"\n"%(Mix_BlendeType_Code[blend_type])
exp += "\t\tDescription=\"%s\"\n"%(blend_type)
for i, inputs in enumerate(linked_info['inputs_uuid']):
links_pin_str = ''
linkto_type = ''
linkto_graph = ''
linkto_node = ''
# if constant var, create a new node
if '_CONSTANT_' in linked_info['node_names'][0][i]:
constant_str, constant_names, constant_uuid = _exp_constant(linked_info['node_names'][0][i]['_CONSTANT_']["Type"],
linked_info['node_names'][0][i]['_CONSTANT_']["Value"],
_get_node_names(-1, node), inputs[0], node.location)
exp_constants.append(constant_str)
linkto_graph = constant_names[0]
linkto_node = constant_names[1]
linkto_type = constant_names[2]
links_pin_str = LinkTemplate.format(Graph=constant_names[0], UUID=constant_uuid)
pin += PinTemplate.format(UUID=inputs[0], LinkStr=LinkedToTemplate.format(links_pin_str))
else:
linkto_type = linked_info['node_names'][0][i][2]
linkto_graph = linked_info['node_names'][0][i][0]
linkto_node = linked_info['node_names'][0][i][1]
for j in range(1, len(inputs)):
links_pin_str += LinkTemplate.format(Graph=linkto_graph, UUID=inputs[j])
pin += PinTemplate.format(UUID=inputs[0], LinkStr=LinkedToTemplate.format(links_pin_str))
exp += CustomInputTemplate.format(int(i), var_name[i], FuncExpInputTemplate.format("Input", linkto_type, linkto_graph, linkto_node))
if node.outputs[0].is_linked:
for output in linked_info['outputs_uuid']:
links_pin_str = ''
for i in range(1, len(output)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][i-1][0], UUID=output[i])
pin += PinTemplate.format(UUID=output[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
return {"Value": exp, "Pin": pin, "Constant": exp_constants, "Replace": []}
def _exp_fresnel(node, linked_info):
exp = ''
pin = ''
exp_constants = []
exp += "\t\tCode=\"float Fraction = ((1-ior)*(1-ior)) / ((1+ior)*(1+ior));\\r\\n\\r\\nreturn Fraction + (1-Fraction)*pow(1-dot(camera_vector, normal), 5);\"\n"
exp += "\t\tOutputType=CMOT_Float1\n"
exp += "\t\tDescription=\"Fresnel_IOR\"\n"
for i, inputs in enumerate(linked_info['inputs_uuid']):
links_pin_str = ''
linkto_type = ''
linkto_graph = ''
linkto_node = ''
input_name = ''
if i == 0:
input_name = 'ior'
else:
input_name = 'normal'
# if constant var, create a new node
if '_CONSTANT_' in linked_info['node_names'][0][i]:
_type = linked_info['node_names'][0][i]['_CONSTANT_']["Type"]
if i == 1:
_type = "_NORMALWS"
constant_str, constant_names, constant_uuid = _exp_constant(_type,
linked_info['node_names'][0][i]['_CONSTANT_']["Value"],
_get_node_names(-1, node), inputs[0], node.location)
exp_constants.append(constant_str)
linkto_graph = constant_names[0]
linkto_node = constant_names[1]
linkto_type = constant_names[2]
links_pin_str = LinkTemplate.format(Graph=constant_names[0], UUID=constant_uuid)
pin += PinTemplate.format(UUID=inputs[0] + ",PinName=\"%s\""%(input_name), LinkStr=LinkedToTemplate.format(links_pin_str))
else:
linkto_type = linked_info['node_names'][0][i][2]
linkto_graph = linked_info['node_names'][0][i][0]
linkto_node = linked_info['node_names'][0][i][1]
for j in range(1, len(inputs)):
links_pin_str += LinkTemplate.format(Graph=linkto_graph, UUID=inputs[j])
pin += PinTemplate.format(UUID=inputs[0], LinkStr=LinkedToTemplate.format(links_pin_str))
exp += CustomInputTemplate.format(int(i), input_name, FuncExpInputTemplate.format("Input", linkto_type, linkto_graph, linkto_node))
# Camera Vector
input_uuid = get_uuid(_get_node_names(-1, node)[1] + "_CAMVECTOR")
constant_str, constant_names, constant_uuid = _exp_constant('_CAMVECWS', -1, _get_node_names(-1, node), input_uuid, node.location)
exp_constants.append(constant_str)
links_pin_str = LinkTemplate.format(Graph=constant_names[0], UUID=constant_uuid)
pin += PinTemplate.format(UUID=inputs[0] + ",PinName=\"%s\""%("camera_vector"), LinkStr=LinkedToTemplate.format(links_pin_str))
exp += CustomInputTemplate.format(int(2), "camera_vector", FuncExpInputTemplate.format("Input", constant_names[2], constant_names[0], constant_names[1]))
if node.outputs[0].is_linked:
for output in linked_info['outputs_uuid']:
links_pin_str = ''
for i in range(1, len(output)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][i-1][0], UUID=output[i])
pin += PinTemplate.format(UUID=output[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
return {"Value": exp, "Pin": pin, "Constant": exp_constants, "Replace": []}
def _exp_blackbody(node, linked_info):
exp = ''
pin = ''
exp_constants = []
for i, inputs in enumerate(linked_info['inputs_uuid']):
links_pin_str = ''
linkto_type = ''
linkto_graph = ''
linkto_node = ''
# if constant var, create a new node
if '_CONSTANT_' in linked_info['node_names'][0][i]:
constant_str, constant_names, constant_uuid = _exp_constant(linked_info['node_names'][0][i]['_CONSTANT_']["Type"],
linked_info['node_names'][0][i]['_CONSTANT_']["Value"],
_get_node_names(-1, node), inputs[0], node.location)
exp_constants.append(constant_str)
linkto_graph = constant_names[0]
linkto_node = constant_names[1]
linkto_type = constant_names[2]
links_pin_str = LinkTemplate.format(Graph=constant_names[0], UUID=constant_uuid)
pin += PinTemplate.format(UUID=inputs[0], LinkStr=LinkedToTemplate.format(links_pin_str))
else:
linkto_type = linked_info['node_names'][0][i][2]
linkto_graph = linked_info['node_names'][0][i][0]
linkto_node = linked_info['node_names'][0][i][1]
for j in range(1, len(inputs)):
links_pin_str += LinkTemplate.format(Graph=linkto_graph, UUID=inputs[j])
pin += PinTemplate.format(UUID=inputs[0], LinkStr=LinkedToTemplate.format(links_pin_str))
exp += FuncInputTemplate.format(int(i), FuncExpInputTemplate.format("Input", linkto_type, linkto_graph, linkto_node))
if node.outputs[0].is_linked:
for output in linked_info['outputs_uuid']:
links_pin_str = ''
for i in range(1, len(output)):
links_pin_str += LinkTemplate.format(Graph=linked_info['node_names'][1][i-1][0], UUID=output[i])
pin += PinTemplate.format(UUID=output[0], LinkStr='Direction="EGPD_Output",' + LinkedToTemplate.format(links_pin_str))
return {"Value": exp, "Pin": pin, "Constant": exp_constants, "Replace": []}
def _exp_clamp(node, linked_info):
exp = ''
pin = ''
exp_constants = []
for i, inputs in enumerate(linked_info['inputs_uuid']):
links_pin_str = ''
linkto_type = ''
linkto_graph = ''
linkto_node = ''