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# ##### BEGIN GPL LICENSE BLOCK #####
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# ##### END GPL LICENSE BLOCK #####
# <pep8-80 compliant>
from mathutils import Vector
import bpy
from bpy.types import Operator
from bpy.props import (
BoolProperty,
EnumProperty,
IntProperty,
FloatProperty,
FloatVectorProperty,
)
def object_ensure_material(obj, mat_name):
""" Use an existing material or add a new one.
"""
mat = mat_slot = None
for mat_slot in obj.material_slots:
mat = mat_slot.material
if mat:
break
if mat is None:
mat = bpy.data.materials.new(mat_name)
if mat_slot:
mat_slot.material = mat
else:
obj.data.materials.append(mat)
return mat
def obj_bb_minmax(obj, min_co, max_co):
for i in range(0, 8):
bb_vec = obj.matrix_world * Vector(obj.bound_box[i])
min_co[0] = min(bb_vec[0], min_co[0])
min_co[1] = min(bb_vec[1], min_co[1])
min_co[2] = min(bb_vec[2], min_co[2])
max_co[0] = max(bb_vec[0], max_co[0])
max_co[1] = max(bb_vec[1], max_co[1])
max_co[2] = max(bb_vec[2], max_co[2])
def grid_location(x, y):
return (x * 200, y * 150)
class QuickSmoke(Operator):
bl_idname = "object.quick_smoke"
bl_label = "Quick Smoke"
bl_options = {'REGISTER', 'UNDO'}
style = EnumProperty(
name="Smoke Style",
items=(('SMOKE', "Smoke", ""),
('FIRE', "Fire", ""),
('BOTH', "Smoke + Fire", ""),
),
default='SMOKE',
)
show_flows = BoolProperty(
name="Render Smoke Objects",
description="Keep the smoke objects visible during rendering",
default=False,
)
def execute(self, context):
if not bpy.app.build_options.mod_smoke:
self.report({'ERROR'}, "Build without Smoke modifier support")
return {'CANCELLED'}
fake_context = context.copy()
mesh_objects = [obj for obj in context.selected_objects
if obj.type == 'MESH']
min_co = Vector((100000.0, 100000.0, 100000.0))
max_co = -min_co
if not mesh_objects:
self.report({'ERROR'}, "Select at least one mesh object")
return {'CANCELLED'}
for obj in mesh_objects:
fake_context["object"] = obj
# make each selected object a smoke flow
bpy.ops.object.modifier_add(fake_context, type='SMOKE')
obj.modifiers[-1].smoke_type = 'FLOW'
# set type
obj.modifiers[-1].flow_settings.smoke_flow_type = self.style
if not self.show_flows:
obj.draw_type = 'WIRE'
# store bounding box min/max for the domain object
obj_bb_minmax(obj, min_co, max_co)
# add the smoke domain object
bpy.ops.mesh.primitive_cube_add()
obj = context.active_object
obj.name = "Smoke Domain"
# give the smoke some room above the flows
obj.location = 0.5 * (max_co + min_co) + Vector((0.0, 0.0, 1.0))
obj.scale = 0.5 * (max_co - min_co) + Vector((1.0, 1.0, 2.0))
# setup smoke domain
bpy.ops.object.modifier_add(type='SMOKE')
obj.modifiers[-1].smoke_type = 'DOMAIN'
if self.style == 'FIRE' or self.style == 'BOTH':
obj.modifiers[-1].domain_settings.use_high_resolution = True
# Setup material
# Cycles
if context.scene.render.use_shading_nodes:
bpy.ops.object.material_slot_add()
mat = bpy.data.materials.new("Smoke Domain Material")
obj.material_slots[0].material = mat
# Make sure we use nodes
mat.use_nodes = True
# Set node variables and clear the default nodes
tree = mat.node_tree
nodes = tree.nodes
links = tree.links
nodes.clear()
# Create shader nodes
# Material output
node_out = nodes.new(type='ShaderNodeOutputMaterial')
node_out.location = grid_location(6, 1)
# Add shader 1
node_add_shader_1 = nodes.new(type='ShaderNodeAddShader')
node_add_shader_1.location = grid_location(5, 1)
links.new(node_add_shader_1.outputs["Shader"],
node_out.inputs["Volume"])
if self.style in {'SMOKE', 'FIRE', 'BOTH'}:
# Smoke
# Add shader 2
node_add_shader_2 = nodes.new(type='ShaderNodeAddShader')
node_add_shader_2.location = grid_location(4, 2)
links.new(node_add_shader_2.outputs["Shader"],
node_add_shader_1.inputs[0])
# Volume scatter
node_scatter = nodes.new(type='ShaderNodeVolumeScatter')
node_scatter.location = grid_location(3, 3)
links.new(node_scatter.outputs["Volume"],
node_add_shader_2.inputs[0])
# Volume absorption
node_absorption = nodes.new(type='ShaderNodeVolumeAbsorption')
node_absorption.location = grid_location(3, 2)
links.new(node_absorption.outputs["Volume"],
node_add_shader_2.inputs[1])
# Density Multiplier
node_densmult = nodes.new(type='ShaderNodeMath')
node_densmult.location = grid_location(2, 2)
node_densmult.operation = 'MULTIPLY'
node_densmult.inputs[1].default_value = 5.0
links.new(node_densmult.outputs["Value"],
node_scatter.inputs["Density"])
links.new(node_densmult.outputs["Value"],
node_absorption.inputs["Density"])
# Attribute "density"
node_attrib_density = nodes.new(type='ShaderNodeAttribute')
node_attrib_density.attribute_name = "density"
node_attrib_density.location = grid_location(1, 2)
links.new(node_attrib_density.outputs["Fac"],
node_densmult.inputs[0])
# Attribute "color"
node_attrib_color = nodes.new(type='ShaderNodeAttribute')
node_attrib_color.attribute_name = "color"
node_attrib_color.location = grid_location(2, 3)
links.new(node_attrib_color.outputs["Color"],
node_scatter.inputs["Color"])
links.new(node_attrib_color.outputs["Color"],
node_absorption.inputs["Color"])
if self.style in {'FIRE', 'BOTH'}:
# Fire
# Emission
node_emission = nodes.new(type='ShaderNodeEmission')
node_emission.inputs["Color"].default_value = (0.8, 0.1, 0.01, 1.0)
node_emission.location = grid_location(4, 1)
links.new(node_emission.outputs["Emission"],
node_add_shader_1.inputs[1])
# Flame strength multiplier
node_flame_strength_mult = nodes.new(type='ShaderNodeMath')
node_flame_strength_mult.location = grid_location(3, 1)
node_flame_strength_mult.operation = 'MULTIPLY'
node_flame_strength_mult.inputs[1].default_value = 2.5
links.new(node_flame_strength_mult.outputs["Value"],
node_emission.inputs["Strength"])
# Color ramp Flame
node_flame_ramp = nodes.new(type='ShaderNodeValToRGB')
node_flame_ramp.location = grid_location(1, 1)
ramp = node_flame_ramp.color_ramp
ramp.interpolation = 'EASE'
# orange
elem = ramp.elements.new(0.5)
elem.color = (1.0, 0.128, 0.0, 1.0)
# yellow
elem = ramp.elements.new(0.9)
elem.color = (0.9, 0.6, 0.1, 1.0)
links.new(node_flame_ramp.outputs["Color"],
node_emission.inputs["Color"])
# Attribute "flame"
node_attrib_flame = nodes.new(type='ShaderNodeAttribute')
node_attrib_flame.attribute_name = "flame"
node_attrib_flame.location = grid_location(0, 1)
links.new(node_attrib_flame.outputs["Fac"],
node_flame_ramp.inputs["Fac"])
links.new(node_attrib_flame.outputs["Fac"],
node_flame_strength_mult.inputs[0])
# Blender Internal
else:
# create a volume material with a voxel data texture for the domain
bpy.ops.object.material_slot_add()
mat = bpy.data.materials.new("Smoke Domain Material")
obj.material_slots[0].material = mat
mat.type = 'VOLUME'
mat.volume.density = 0
mat.volume.density_scale = 5
mat.volume.step_size = 0.1
tex = bpy.data.textures.new("Smoke Density", 'VOXEL_DATA')
tex.voxel_data.domain_object = obj
tex.voxel_data.interpolation = 'TRICUBIC_BSPLINE'
tex_slot = mat.texture_slots.add()
tex_slot.texture = tex
tex_slot.texture_coords = 'ORCO'
tex_slot.use_map_color_emission = False
tex_slot.use_map_density = True
tex_slot.use_map_color_reflection = True
# for fire add a second texture for flame emission
mat.volume.emission_color = Vector((0.0, 0.0, 0.0))
tex = bpy.data.textures.new("Flame", 'VOXEL_DATA')
tex.voxel_data.domain_object = obj
tex.voxel_data.smoke_data_type = 'SMOKEFLAME'
tex.voxel_data.interpolation = 'TRICUBIC_BSPLINE'
tex.use_color_ramp = True
tex_slot = mat.texture_slots.add()
tex_slot.texture = tex
tex_slot.texture_coords = 'ORCO'
# add color ramp for flame color
ramp = tex.color_ramp
# dark orange
elem = ramp.elements.new(0.333)
elem.color = (0.2, 0.03, 0.0, 1.0)
# yellow glow
elem = ramp.elements.new(0.666)
elem.color = (1, 0.65, 0.25, 1.0)
mat.texture_slots[1].use_map_density = True
mat.texture_slots[1].use_map_emission = True
mat.texture_slots[1].emission_factor = 5
return {'FINISHED'}
class QuickFluid(Operator):
bl_idname = "object.quick_fluid"
bl_label = "Quick Fluid"
bl_options = {'REGISTER', 'UNDO'}
style = EnumProperty(
name="Fluid Style",
items=(('INFLOW', "Inflow", ""),
('BASIC', "Basic", "")),
default='BASIC',
)
initial_velocity = FloatVectorProperty(
name="Initial Velocity",
description="Initial velocity of the fluid",
min=-100.0, max=100.0,
default=(0.0, 0.0, 0.0),
subtype='VELOCITY',
)
show_flows = BoolProperty(
name="Render Fluid Objects",
description="Keep the fluid objects visible during rendering",
default=False,
)
start_baking = BoolProperty(
name="Start Fluid Bake",
description=("Start baking the fluid immediately "
"after creating the domain object"),
default=False,
)
def execute(self, context):
if not bpy.app.build_options.mod_fluid:
self.report({'ERROR'}, "Build without Fluid modifier support")
return {'CANCELLED'}
fake_context = context.copy()
mesh_objects = [obj for obj in context.selected_objects
if (obj.type == 'MESH' and 0.0 not in obj.dimensions)]
min_co = Vector((100000.0, 100000.0, 100000.0))
max_co = -min_co
if not mesh_objects:
self.report({'ERROR'}, "Select at least one mesh object")
return {'CANCELLED'}
for obj in mesh_objects:
fake_context["object"] = obj
# make each selected object a fluid
bpy.ops.object.modifier_add(fake_context, type='FLUID_SIMULATION')
# fluid has to be before constructive modifiers,
# so it might not be the last modifier
for mod in obj.modifiers:
if mod.type == 'FLUID_SIMULATION':
break
if self.style == 'INFLOW':
mod.settings.type = 'INFLOW'
mod.settings.inflow_velocity = self.initial_velocity
else:
mod.settings.type = 'FLUID'
mod.settings.initial_velocity = self.initial_velocity
obj.hide_render = not self.show_flows
if not self.show_flows:
obj.draw_type = 'WIRE'
# store bounding box min/max for the domain object
obj_bb_minmax(obj, min_co, max_co)
# add the fluid domain object
bpy.ops.mesh.primitive_cube_add()
obj = context.active_object
obj.name = "Fluid Domain"
# give the fluid some room below the flows
# and scale with initial velocity
v = 0.5 * self.initial_velocity
obj.location = 0.5 * (max_co + min_co) + Vector((0.0, 0.0, -1.0)) + v
obj.scale = (0.5 * (max_co - min_co) +
Vector((1.0, 1.0, 2.0)) +
Vector((abs(v[0]), abs(v[1]), abs(v[2])))
)
# setup smoke domain
bpy.ops.object.modifier_add(type='FLUID_SIMULATION')
obj.modifiers[-1].settings.type = 'DOMAIN'
# make the domain smooth so it renders nicely
bpy.ops.object.shade_smooth()
# create a ray-transparent material for the domain
bpy.ops.object.material_slot_add()
mat = bpy.data.materials.new("Fluid Domain Material")
obj.material_slots[0].material = mat
mat.specular_intensity = 1
mat.specular_hardness = 100
mat.use_transparency = True
mat.alpha = 0.0
mat.transparency_method = 'RAYTRACE'
mat.raytrace_transparency.ior = 1.33
mat.raytrace_transparency.depth = 4
if self.start_baking:
bpy.ops.fluid.bake('INVOKE_DEFAULT')
return {'FINISHED'}
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