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# SPDX-License-Identifier: GPL-2.0-or-later
import bpy
import math
from collections import namedtuple
from bpy.props import (
BoolProperty,
IntProperty,
FloatProperty,
PointerProperty
)
ScatterSettings = namedtuple("ScatterSettings",
["seed", "density", "radius", "scale", "random_scale",
"rotation", "normal_offset", "use_normal_rotation"])
class ObjectScatterProperties(bpy.types.PropertyGroup):
seed: IntProperty(
name="Seed",
default=0,
description="Change it to get a different scatter pattern",
)
density: FloatProperty(
name="Density",
default=10,
min=0,
soft_max=50,
description="The amount of objects per unit on the line",
)
radius: FloatProperty(
name="Radius",
default=1,
min=0,
soft_max=5,
subtype='DISTANCE',
unit='LENGTH',
description="Maximum distance of the objects to the line",
)
scale: FloatProperty(
name="Scale",
default=0.3,
min=0.00001,
soft_max=1,
description="Size of the generated objects",
)
random_scale_percentage: FloatProperty(
name="Random Scale Percentage",
default=80,
min=0,
max=100,
subtype='PERCENTAGE',
precision=0,
description="Increase to get a larger range of sizes",
)
rotation: FloatProperty(
name="Rotation",
default=0.5,
min=0,
max=math.pi * 2,
soft_max=math.pi / 2,
subtype='ANGLE',
unit='ROTATION',
description="Maximum rotation of the generated objects",
)
normal_offset: FloatProperty(
name="Normal Offset",
default=0,
soft_min=-1.0,
soft_max=1.0,
description="Distance from the surface",
)
use_normal_rotation: BoolProperty(
name="Use Normal Rotation",
default=True,
description="Rotate the instances according to the surface normals",
)
def to_settings(self):
return ScatterSettings(
seed=self.seed,
density=self.density,
radius=self.radius,
scale=self.scale,
random_scale=self.random_scale_percentage / 100,
rotation=self.rotation,
normal_offset=self.normal_offset,
use_normal_rotation=self.use_normal_rotation,
)
class ObjectScatterPanel(bpy.types.Panel):
bl_idname = "OBJECT_PT_object_scatter"
bl_label = "Object Scatter"
bl_space_type = 'VIEW_3D'
bl_region_type = 'UI'
bl_category = "Tool"
def draw(self, context):
layout = self.layout
layout.use_property_split = True
scatter = context.scene.scatter_properties
layout.prop(scatter, "density", slider=True)
layout.prop(scatter, "radius", slider=True)
col = layout.column(align=True)
col.prop(scatter, "scale", slider=True)
col.prop(scatter, "random_scale_percentage", text="Randomness", slider=True)
layout.prop(scatter, "use_normal_rotation")
layout.prop(scatter, "rotation", slider=True)
layout.prop(scatter, "normal_offset", text="Offset", slider=True)
layout.prop(scatter, "seed")
def draw_menu(self, context):
layout = self.layout
layout.operator("object.scatter")
classes = (
ObjectScatterProperties,
ObjectScatterPanel,
)
def register():
for cls in classes:
bpy.utils.register_class(cls)
bpy.types.Scene.scatter_properties = PointerProperty(type=ObjectScatterProperties)
bpy.types.VIEW3D_MT_object.append(draw_menu)
def unregister():
for cls in classes:
bpy.utils.unregister_class(cls)
del bpy.types.Scene.scatter_properties
bpy.types.VIEW3D_MT_object.remove(draw_menu)
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