Been working on this for close to 3 weeks (only work on it for about an hour a day) and this keeps happening and I have no idea why or how? The donut is the parent object to the icing and I have it to snap when I'm working on the actual shape (which I'm way past now) but it keeps doing this anytime I open the file. (I'm watching the 4.0 but using 5.0 however the person helping me said that they've never had any problems using the 4.0 tutorial for 5.0)

Just finished my donut along with my plate and mug I have put a lot of effort into modeling the mug. So how is it?

I followed blender guru's tutorial (kinda) and got to this. A couple assets like the sofa and plant is from their site. The other asset, the computer, is a royalty free asset. Everything else is what I actually made.

import bpy

import bmesh

import math

import random

from mathutils import Vector

# ==============================================================================

# 0. CLEANUP & SCENE SETUP

# ==============================================================================

def clean_scene():

if bpy.context.active_object and bpy.context.active_object.mode != 'OBJECT':

bpy.ops.object.mode_set(mode='OBJECT')

bpy.ops.object.select_all(action='SELECT')

bpy.ops.object.delete(use_global=False)

for block in list(bpy.data.meshes): bpy.data.meshes.remove(block)

for block in list(bpy.data.materials): bpy.data.materials.remove(block)

for block in list(bpy.data.lights): bpy.data.lights.remove(block)

for block in list(bpy.data.cameras): bpy.data.cameras.remove(block)

clean_scene()

scene_col = bpy.data.collections.new("DonutAndCoffeeScene")

bpy.context.scene.collection.children.link(scene_col)

def link_to_col(obj):

if obj.name in bpy.context.scene.collection.objects:

bpy.context.scene.collection.objects.unlink(obj)

if obj.name not in scene_col.objects:

scene_col.objects.link(obj)

# ==============================================================================

# 1. MATERIAL PALETTE

# ==============================================================================

def create_material(name, base_color, roughness=0.5, specular=0.5, transmission=0.0):

mat = bpy.data.materials.new(name=name)

mat.use_nodes = True

bsdf = mat.node_tree.nodes.get("Principled BSDF")

bsdf.inputs['Base Color'].default_value = base_color

bsdf.inputs['Roughness'].default_value = roughness

if 'Specular IOR Level' in bsdf.inputs:

bsdf.inputs['Specular IOR Level'].default_value = specular

elif 'Specular' in bsdf.inputs:

bsdf.inputs['Specular'].default_value = specular

if 'Transmission Weight' in bsdf.inputs:

bsdf.inputs['Transmission Weight'].default_value = transmission

elif 'Transmission' in bsdf.inputs:

bsdf.inputs['Transmission'].default_value = transmission

return mat

# Donut Materials

mat_dough = create_material("Mat_Dough", (0.75, 0.48, 0.22, 1.0), roughness=0.8, specular=0.2)

mat_frosting = create_material("Mat_Frosting", (0.92, 0.22, 0.52, 1.0), roughness=0.18, specular=0.8)

# Sprinkle Colors

sprinkle_colors = [

create_material("Sprinkle_Cyan", (0.05, 0.75, 0.95, 1.0), roughness=0.3),

create_material("Sprinkle_Yellow", (0.98, 0.85, 0.08, 1.0), roughness=0.3),

create_material("Sprinkle_White", (0.95, 0.95, 0.95, 1.0), roughness=0.3),

create_material("Sprinkle_Lime", (0.45, 0.9, 0.15, 1.0), roughness=0.3),

create_material("Sprinkle_Purple", (0.6, 0.15, 0.85, 1.0), roughness=0.3),

create_material("Sprinkle_Orange", (0.95, 0.45, 0.05, 1.0), roughness=0.3),

]

# Ceramic Set (Cup, Saucer, Base Plate)

mat_ceramic = create_material("Mat_CeramicTeal", (0.12, 0.52, 0.58, 1.0), roughness=0.15, specular=0.9)

mat_ceramic_rim = create_material("Mat_CeramicWhite", (0.95, 0.95, 0.96, 1.0), roughness=0.12, specular=0.9)

mat_table = create_material("Mat_TableWood", (0.82, 0.78, 0.72, 1.0), roughness=0.45)

# Coffee Liquid & Crema

mat_coffee = create_material("Mat_CoffeeDark", (0.08, 0.04, 0.02, 1.0), roughness=0.08, specular=0.9)

mat_crema = create_material("Mat_CoffeeCrema", (0.48, 0.32, 0.18, 1.0), roughness=0.35, specular=0.4)

# ==============================================================================

# 2. PROCEDURAL DONUT WITH DRIPPING FROSTING & SPRINKLES

# ==============================================================================

donut_pos = Vector((-0.75, -0.3, 0.0))

major_radius = 0.85

minor_radius = 0.45

major_segments = 48

minor_segments = 24

# Base Dough Torus

bpy.ops.mesh.primitive_torus_add(

major_radius=major_radius,

minor_radius=minor_radius,

major_segments=major_segments,

minor_segments=minor_segments,

location=donut_pos

)

dough_obj = bpy.context.active_object

dough_obj.name = "Donut_Dough"

dough_obj.data.materials.append(mat_dough)

bpy.ops.object.shade_smooth()

link_to_col(dough_obj)

# Organic surface displacement on dough

bm = bmesh.new()

bm.from_mesh(dough_obj.data)

for v in bm.verts:

noise_offset = Vector((

math.sin(v.co.x * 5.0) * 0.015,

math.cos(v.co.y * 5.0) * 0.015,

math.sin(v.co.z * 6.0) * 0.012

))

v.co += noise_offset

bm.to_mesh(dough_obj.data)

bm.free()

# Frosting Layer

bpy.ops.mesh.primitive_torus_add(

major_radius=major_radius,

minor_radius=minor_radius + 0.018,

major_segments=major_segments,

minor_segments=minor_segments,

location=donut_pos

)

frosting_obj = bpy.context.active_object

frosting_obj.name = "Donut_Frosting"

frosting_obj.data.materials.append(mat_frosting)

bpy.ops.object.shade_smooth()

link_to_col(frosting_obj)

# Drips carving

bm_f = bmesh.new()

bm_f.from_mesh(frosting_obj.data)

verts_to_delete = []

for v in bm_f.verts:

angle = math.atan2(v.co.y, v.co.x)

drip_wave = math.sin(angle * 6.0) * 0.11 + math.cos(angle * 11.0) * 0.07

cutoff_z = -0.05 + drip_wave

if v.co.z < cutoff_z:

verts_to_delete.append(v)

else:

v.co += v.normal * 0.018

bmesh.ops.delete(bm_f, geom=verts_to_delete, context='VERTS')

bm_f.to_mesh(frosting_obj.data)

bm_f.free()

# Modifiers for Donut

solid_mod = frosting_obj.modifiers.new(name="Solidify", type='SOLIDIFY')

solid_mod.thickness = 0.03

solid_mod.offset = 1.0

subsurf_f = frosting_obj.modifiers.new(name="Subsurf", type='SUBSURF')

subsurf_f.levels = 1

subsurf_f.render_levels = 2

subsurf_d = dough_obj.modifiers.new(name="Subsurf", type='SUBSURF')

subsurf_d.levels = 1

subsurf_d.render_levels = 2

# Sprinkles

random.seed(101)

num_sprinkles = 120

sprinkle_len = 0.12

sprinkle_rad = 0.024

for i in range(num_sprinkles):

theta = random.uniform(0, math.pi * 2)

ring_radius = major_radius + random.uniform(-minor_radius * 0.52, minor_radius * 0.52)

sx = donut_pos.x + math.cos(theta) * ring_radius

sy = donut_pos.y + math.sin(theta) * ring_radius

dist_from_center_ring = ring_radius - major_radius

rad_clamped = max(0.0, (minor_radius ** 2) - (dist_from_center_ring ** 2))

sz = donut_pos.z + math.sqrt(rad_clamped) + 0.04 + random.uniform(-0.004, 0.006)

bpy.ops.mesh.primitive_cylinder_add(

radius=sprinkle_rad,

depth=sprinkle_len,

vertices=10,

location=(sx, sy, sz)

)

sprinkle = bpy.context.active_object

sprinkle.name = f"Sprinkle_{i:03d}"

rot_x = math.radians(random.uniform(-18, 18))

rot_y = math.radians(random.uniform(-18, 18))

rot_z = random.uniform(0, math.pi * 2)

sprinkle.rotation_euler = (rot_x, rot_y, rot_z)

bpy.ops.object.shade_smooth()

bevel = sprinkle.modifiers.new(name="Bevel", type='BEVEL')

bevel.width = 0.01

bevel.segments = 2

sprinkle.data.materials.append(random.choice(sprinkle_colors))

link_to_col(sprinkle)

# ==============================================================================

# 3. PROCEDURAL CERAMIC COFFEE CUP, SAUCER & COFFEE LIQUID

# ==============================================================================

cup_center = Vector((1.2, 0.4, -minor_radius))

cup_height = 1.35

cup_top_radius = 0.72

cup_bottom_radius = 0.52

# 1. Coffee Cup Body

bpy.ops.mesh.primitive_cone_add(

vertices=36,

radius1=cup_top_radius,

radius2=cup_bottom_radius,

depth=cup_height,

location=(cup_center.x, cup_center.y, cup_center.z + cup_height / 2 + 0.04)

)

cup_obj = bpy.context.active_object

cup_obj.name = "Coffee_Cup"

cup_obj.rotation_euler[0] = math.pi # Flip cone so wider rim is at the top

bpy.ops.object.transform_apply(rotation=True)

bpy.ops.object.shade_smooth()

# Hollow out cup using Solidify

cup_solid = cup_obj.modifiers.new(name="CupSolidify", type='SOLIDIFY')

cup_solid.thickness = 0.075

cup_solid.offset = -1.0

cup_subsurf = cup_obj.modifiers.new(name="CupSubsurf", type='SUBSURF')

cup_subsurf.levels = 1

cup_subsurf.render_levels = 2

cup_obj.data.materials.append(mat_ceramic)

link_to_col(cup_obj)

# 2. Cup Handle (Curved Torus segment)

handle_radius = 0.38

bpy.ops.mesh.primitive_torus_add(

major_radius=handle_radius,

minor_radius=0.075,

major_segments=32,

minor_segments=16,

location=(cup_center.x + cup_top_radius * 0.85, cup_center.y, cup_center.z + cup_height * 0.55)

)

handle = bpy.context.active_object

handle.name = "Cup_Handle"

handle.rotation_euler = (math.radians(90), 0, math.radians(12))

bpy.ops.object.shade_smooth()

# Trim inner half of torus so it embeds cleanly into cup wall

bm_h = bmesh.new()

bm_h.from_mesh(handle.data)

verts_h_del = [v for v in bm_h.verts if v.co.x < -0.05]

bmesh.ops.delete(bm_h, geom=verts_h_del, context='VERTS')

bm_h.to_mesh(handle.data)

bm_h.free()

handle.data.materials.append(mat_ceramic)

link_to_col(handle)

# 3. Coffee Liquid Surface

coffee_z = cup_center.z + cup_height - 0.16

coffee_radius = cup_top_radius * 0.88

bpy.ops.mesh.primitive_cylinder_add(

radius=coffee_radius,

depth=0.04,

vertices=36,

location=(cup_center.x, cup_center.y, coffee_z)

)

coffee_obj = bpy.context.active_object

coffee_obj.name = "Coffee_Liquid"

coffee_obj.data.materials.append(mat_coffee)

bpy.ops.object.shade_smooth()

link_to_col(coffee_obj)

# 4. Crema Swirl / Latte Art Center Ring

bpy.ops.mesh.primitive_cylinder_add(

radius=coffee_radius * 0.55,

depth=0.042,

vertices=32,

location=(cup_center.x, cup_center.y, coffee_z + 0.001)

)

crema_obj = bpy.context.active_object

crema_obj.name = "Coffee_Crema"

crema_obj.data.materials.append(mat_crema)

bpy.ops.object.shade_smooth()

link_to_col(crema_obj)

# 5. Ceramic Saucer Under the Cup

saucer_radius = 1.35

saucer_height = 0.14

bpy.ops.mesh.primitive_cylinder_add(

radius=saucer_radius,

depth=saucer_height,

vertices=48,

location=(cup_center.x, cup_center.y, cup_center.z + 0.05)

)

saucer = bpy.context.active_object

saucer.name = "Coffee_Saucer"

saucer.data.materials.append(mat_ceramic)

bpy.ops.object.shade_smooth()

# Saucer Rim Curvature

saucer_bevel = saucer.modifiers.new(name="SaucerBevel", type='BEVEL')

saucer_bevel.width = 0.04

saucer_bevel.segments = 3

link_to_col(saucer)

# ==============================================================================

# 4. TABLETOP, LIGHTING & CAMERA

# ==============================================================================

# Table Surface

bpy.ops.mesh.primitive_cylinder_add(

radius=4.5,

depth=0.1,

vertices=64,

location=(0, 0, -minor_radius - 0.05)

)

table = bpy.context.active_object

table.name = "Breakfast_Table"

table.data.materials.append(mat_table)

bpy.ops.object.shade_smooth()

link_to_col(table)

# Three-Point Lighting Setup

# Key Light (Warm, primary directional)

key_light_data = bpy.data.lights.new(name="Key_Light", type='AREA')

key_light_data.energy = 95.0

key_light_data.size = 3.0

key_light_data.color = (1.0, 0.95, 0.9)

key_light = bpy.data.objects.new(name="Key_Light", object_data=key_light_data)

key_light.location = (3.2, -3.5, 4.0)

key_light.rotation_euler = (math.radians(48), math.radians(12), math.radians(42))

link_to_col(key_light)

# Fill Light (Cool ambient soft shadow filler)

fill_light_data = bpy.data.lights.new(name="Fill_Light", type='AREA')

fill_light_data.energy = 38.0

fill_light_data.size = 4.0

fill_light_data.color = (0.88, 0.94, 1.0)

fill_light = bpy.data.objects.new(name="Fill_Light", object_data=fill_light_data)

fill_light.location = (-3.5, 2.5, 3.2)

fill_light.rotation_euler = (math.radians(-42), math.radians(-18), math.radians(-125))

link_to_col(fill_light)

# Rim Light (Specular pop on ceramic rim and glossy glaze)

rim_light_data = bpy.data.lights.new(name="Rim_Light", type='POINT')

rim_light_data.energy = 55.0

rim_light_data.color = (1.0, 0.92, 0.96)

rim_light = bpy.data.objects.new(name="Rim_Light", object_data=rim_light_data)

rim_light.location = (0.2, 3.2, 2.6)

link_to_col(rim_light)

# Main Scene Camera (Cinematic composition framing both Donut & Coffee Cup)

cam_data = bpy.data.cameras.new(name="Breakfast_Camera")

cam_data.lens = 60

cam_data.clip_end = 100

cam_obj = bpy.data.objects.new(name="Breakfast_Camera", object_data=cam_data)

cam_obj.location = (2.2, -3.6, 2.8)

cam_obj.rotation_euler = (math.radians(55), 0, math.radians(34))

link_to_col(cam_obj)

bpy.context.scene.camera = cam_obj

total_objects = len(bpy.data.collections["DonutAndCoffeeScene"].objects)

print(f"Breakfast scene generated successfully with {total_objects} scene elements!")

Hello, Ive recently been creating Christian content for Face Book and You Tube.

Im doing a scene now that is in a kitchen, there is an angel, on the counter there is a glass cup, a board with an arrow behind it, and a bible to the right and above the glass. Its about where to find direction, The bible at one point tips over pouring water into the glass. Its supposed to refract the arrow back the other way, direction. I am using the built in Manta Flow and I am having two problems. Can anyone help?

1) The water will not refract. The glass is a glass material with correct bsdf, the water is mesh with a correct water bsdf. But the water will not refract the arrow the other way. I am using cycles, caustics on, i believe suffiecient light bounces. Please help someone this is taking way to long and AI has been unable to help me, very common with blender issues. Im currently using version 5.2.

2) the simulation leaves the water, after its poured into the glass swirling violently for hundreds and hundreds of frames. I have lowered the flip value to less than .6 lowered the vortex setting i believe it is to .10, and the proportions are very close to real life for the glass and the bible where the emmiter is tucked is only a couple inches above the glass. Id like help with this, but if I can get help with the refraction then I can just swap to still water at a specific frame i guess. But would like to understand why this water isnt settling like real water

Thanks for any help, I have spent many hours trying to figure this out.

I’ve been trying to simulate falling rocks, but no matter how much I increase the domain resolution (256, 512, etc.), the fire and smoke still look really blocky.

Could anyone please help me figure out what I’m doing wrong? I’m also uploading screenshots of my settings for reference.

Any advice on what settings I should adjust would be greatly appreciated!

can someone help me to fix this?