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# SPDX-License-Identifier: GPL-2.0-or-later
"""
Nodes: XYZ Sliders for Normal Node
Tweak the Normal node more accurately by using these sliders. Not the most
intuitive way to tweak, but it helps.
ProTip: Hit Shift+Drag for moving in very small steps.
Coded by Lukas Töenne. Thanks!
Find it on the Properties panel, when selecting a Normal node.
"""
import bpy
from mathutils import Vector
# FEATURE: Normal Node Values, by Lukas Tönne
def init():
prop_normal_vector = bpy.props.FloatVectorProperty(
name="Normal", size=3, subtype='XYZ',
min=-1.0, max=1.0, soft_min=-1.0, soft_max=1.0,
get=normal_vector_get, set=normal_vector_set
)
bpy.types.ShaderNodeNormal.normal_vector = prop_normal_vector
bpy.types.CompositorNodeNormal.normal_vector = prop_normal_vector
def clear():
del bpy.types.ShaderNodeNormal.normal_vector
del bpy.types.CompositorNodeNormal.normal_vector
def normal_vector_get(self):
return self.outputs['Normal'].default_value
def normal_vector_set(self, values):
# default_value allows un-normalized values,
# do this here to prevent awkward results
values = Vector(values).normalized()
self.outputs['Normal'].default_value = values
def act_node(context):
try:
return context.active_node
except AttributeError:
return None
def ui_node_normal_values(self, context):
node = act_node(context)
if act_node:
if node and node.type == 'NORMAL':
self.layout.prop(node, "normal_vector", text="")
# // FEATURE: Normal Node Values, by Lukas Tönne
def register():
init()
bpy.types.NODE_PT_active_node_properties.append(ui_node_normal_values)
def unregister():
bpy.types.NODE_PT_active_node_properties.remove(ui_node_normal_values)
clear()
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