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# Copyright 2018-2019 The glTF-Blender-IO authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
def get_output_node(node_tree):
"""Retrive output node."""
output = [node for node in node_tree.nodes if node.type == 'OUTPUT_MATERIAL'][0]
return output
def get_output_surface_input(node_tree):
"""Retrieve surface input of output node."""
output_node = get_output_node(node_tree)
return output_node.inputs['Surface']
def get_diffuse_texture(node_tree):
"""Retrieve diffuse texture node."""
for node in node_tree.nodes:
print(node.name)
if node.label == 'BASE COLOR':
return node
return None
def get_preoutput_node_output(node_tree):
"""Retrieve node just before output node."""
output_node = get_output_node(node_tree)
preoutput_node = output_node.inputs['Surface'].links[0].from_node
# Pre output node is Principled BSDF or any BSDF => BSDF
if 'BSDF' in preoutput_node.type:
return preoutput_node.outputs['BSDF']
elif 'SHADER' in preoutput_node.type:
return preoutput_node.outputs['Shader']
else:
print(preoutput_node.type)
def get_base_color_node(node_tree):
"""Returns the last node of the diffuse block."""
for node in node_tree.nodes:
if node.label == 'BASE COLOR':
return node
return None
def get_gltf_node_name():
return "glTF Settings"
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