Upload 3 files
Browse files- app.py +342 -0
- apt.txt +8 -0
- requirements.txt +5 -0
app.py
ADDED
@@ -0,0 +1,342 @@
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1 |
+
# Updated app.py
|
2 |
+
import streamlit as st
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3 |
+
import tempfile
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4 |
+
import subprocess
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5 |
+
import os
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6 |
+
import requests
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7 |
+
import base64
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8 |
+
import sys
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9 |
+
from streamlit_ace import st_ace
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10 |
+
import shutil
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11 |
+
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12 |
+
st.set_page_config(page_title="Blender 3D Viewer", layout="wide")
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13 |
+
st.title("🌍 Blender Script → 3D Viewer")
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14 |
+
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15 |
+
# Find Blender executable
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16 |
+
def find_blender():
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17 |
+
# Common paths to check
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18 |
+
paths_to_check = [
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+
"blender", # default PATH
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20 |
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"/usr/bin/blender",
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"/opt/blender/blender"
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+
]
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+
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24 |
+
for path in paths_to_check:
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25 |
+
try:
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+
result = subprocess.run([path, "--version"],
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27 |
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capture_output=True,
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text=True,
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+
timeout=5)
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+
if result.returncode == 0:
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st.success(f"Found Blender: {result.stdout.strip()}")
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32 |
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return path
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33 |
+
except:
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+
continue
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+
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36 |
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return None
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37 |
+
|
38 |
+
# Check if Blender is available at startup
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39 |
+
blender_path = find_blender()
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40 |
+
if not blender_path:
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+
st.error("❌ Blender not found! The app requires Blender to be installed.")
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42 |
+
st.info("Please check the Spaces configuration for proper apt.txt setup.")
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43 |
+
# Continue anyway to show the interface
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44 |
+
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45 |
+
# Hardcoded default texture URLs (with fallbacks)
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46 |
+
DEFAULT_TEXTURE_URLS = [
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+
"https://eoimages.gsfc.nasa.gov/images/imagerecords/57000/57730/land_ocean_ice_2048.jpg",
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"https://svs.gsfc.nasa.gov/vis/a000000/a002900/a002915/bluemarble-2048.png"
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49 |
+
]
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50 |
+
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51 |
+
# Sidebar: Blender script editor with example script
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52 |
+
default_script = """
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53 |
+
import bpy
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54 |
+
import os
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55 |
+
import math
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56 |
+
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57 |
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# Clear the scene
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58 |
+
bpy.ops.object.select_all(action='SELECT')
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59 |
+
bpy.ops.object.delete()
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60 |
+
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61 |
+
# Create a UV Sphere for Earth
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62 |
+
bpy.ops.mesh.primitive_uv_sphere_add(radius=1, location=(0, 0, 0))
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63 |
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earth = bpy.context.active_object
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64 |
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earth.name = 'Earth'
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65 |
+
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# Apply material to Earth
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mat = bpy.data.materials.new(name="EarthMaterial")
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68 |
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mat.use_nodes = True
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69 |
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nodes = mat.node_tree.nodes
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70 |
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links = mat.node_tree.links
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71 |
+
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72 |
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# Clear default nodes
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73 |
+
for node in nodes:
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nodes.remove(node)
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75 |
+
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76 |
+
# Create texture node
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77 |
+
texture_node = nodes.new(type='ShaderNodeTexImage')
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78 |
+
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79 |
+
# Get texture path from environment variable if available
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80 |
+
texture_paths = os.environ.get('TEXTURE_PATHS', '').split(',')
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81 |
+
if texture_paths and texture_paths[0]:
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82 |
+
texture_node.image = bpy.data.images.load(texture_paths[0])
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83 |
+
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84 |
+
# Add Principled BSDF node
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85 |
+
principled = nodes.new(type='ShaderNodeBsdfPrincipled')
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86 |
+
principled.inputs['Specular'].default_value = 0.1
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87 |
+
principled.inputs['Roughness'].default_value = 0.8
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88 |
+
|
89 |
+
# Add Output node
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90 |
+
output = nodes.new(type='ShaderNodeOutputMaterial')
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91 |
+
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92 |
+
# Link nodes
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93 |
+
links.new(texture_node.outputs['Color'], principled.inputs['Base Color'])
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94 |
+
links.new(principled.outputs['BSDF'], output.inputs['Surface'])
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95 |
+
|
96 |
+
# Assign material to Earth
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97 |
+
if earth.data.materials:
|
98 |
+
earth.data.materials[0] = mat
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99 |
+
else:
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100 |
+
earth.data.materials.append(mat)
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101 |
+
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102 |
+
# Add a simple animation - rotation
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103 |
+
earth.rotation_euler = (0, 0, 0)
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104 |
+
earth.keyframe_insert(data_path="rotation_euler", frame=1)
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105 |
+
|
106 |
+
# Rotate 360 degrees on Z axis
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107 |
+
earth.rotation_euler = (0, 0, math.radians(360))
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108 |
+
earth.keyframe_insert(data_path="rotation_euler", frame=250)
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109 |
+
|
110 |
+
# Set animation interpolation to linear
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111 |
+
for fc in earth.animation_data.action.fcurves:
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112 |
+
for kf in fc.keyframe_points:
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113 |
+
kf.interpolation = 'LINEAR'
|
114 |
+
|
115 |
+
# Setup camera
|
116 |
+
bpy.ops.object.camera_add(location=(0, -3, 0))
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117 |
+
camera = bpy.context.active_object
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118 |
+
camera.rotation_euler = (math.radians(90), 0, 0)
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119 |
+
bpy.context.scene.camera = camera
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120 |
+
|
121 |
+
# Setup lighting
|
122 |
+
bpy.ops.object.light_add(type='SUN', location=(5, -5, 5))
|
123 |
+
light = bpy.context.active_object
|
124 |
+
light.data.energy = 2.0
|
125 |
+
|
126 |
+
# Set render settings
|
127 |
+
bpy.context.scene.render.engine = 'CYCLES'
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128 |
+
bpy.context.scene.cycles.device = 'CPU'
|
129 |
+
bpy.context.scene.render.film_transparent = True
|
130 |
+
|
131 |
+
# Save the .blend file in the current directory
|
132 |
+
blend_file_path = bpy.path.abspath("//scene.blend")
|
133 |
+
bpy.ops.wm.save_as_mainfile(filepath=blend_file_path)
|
134 |
+
"""
|
135 |
+
|
136 |
+
# Sidebar: Blender script editor
|
137 |
+
st.sidebar.header("Blender Python Script")
|
138 |
+
script_text = st_ace(
|
139 |
+
value=default_script,
|
140 |
+
placeholder="Paste your Blender Python script here...",
|
141 |
+
language="python",
|
142 |
+
theme="monokai",
|
143 |
+
key="ace",
|
144 |
+
min_lines=20,
|
145 |
+
max_lines=100,
|
146 |
+
)
|
147 |
+
|
148 |
+
# Sidebar: texture uploads
|
149 |
+
st.sidebar.header("Texture Uploads (JPG/PNG)")
|
150 |
+
uploaded_textures = st.sidebar.file_uploader(
|
151 |
+
"Upload one or more textures", type=["jpg", "jpeg", "png"], accept_multiple_files=True
|
152 |
+
)
|
153 |
+
|
154 |
+
# Sidebar: custom Python libraries
|
155 |
+
st.sidebar.header("Custom Python Libraries")
|
156 |
+
custom_packages = st.sidebar.text_area(
|
157 |
+
"List pip packages (one per line)",
|
158 |
+
height=100
|
159 |
+
)
|
160 |
+
|
161 |
+
# Main action
|
162 |
+
if st.sidebar.button("Run & Export GLB"):
|
163 |
+
if not blender_path:
|
164 |
+
st.error("Cannot proceed: Blender is not available")
|
165 |
+
st.stop()
|
166 |
+
|
167 |
+
if not script_text or not script_text.strip():
|
168 |
+
st.error("Please provide a valid Blender Python script.")
|
169 |
+
st.stop()
|
170 |
+
|
171 |
+
with st.spinner("Processing your 3D scene..."):
|
172 |
+
# Use a more robust temporary directory approach
|
173 |
+
tmp_dir = tempfile.mkdtemp(prefix="blender_app_")
|
174 |
+
try:
|
175 |
+
# 1) Save user script
|
176 |
+
script_path = os.path.join(tmp_dir, "user_script.py")
|
177 |
+
with open(script_path, "w") as f:
|
178 |
+
f.write(script_text)
|
179 |
+
|
180 |
+
# 2) Collect textures
|
181 |
+
texture_paths = []
|
182 |
+
if uploaded_textures:
|
183 |
+
for idx, upload in enumerate(uploaded_textures):
|
184 |
+
ext = os.path.splitext(upload.name)[1]
|
185 |
+
path = os.path.join(tmp_dir, f"texture_{idx}{ext}")
|
186 |
+
with open(path, "wb") as tf:
|
187 |
+
tf.write(upload.read())
|
188 |
+
texture_paths.append(path)
|
189 |
+
else:
|
190 |
+
# Try multiple default textures if some fail
|
191 |
+
for url in DEFAULT_TEXTURE_URLS:
|
192 |
+
try:
|
193 |
+
r = requests.get(url, timeout=10)
|
194 |
+
r.raise_for_status()
|
195 |
+
ext = os.path.splitext(url)[-1] or ".jpg"
|
196 |
+
path = os.path.join(tmp_dir, f"default{ext}")
|
197 |
+
with open(path, "wb") as tf:
|
198 |
+
tf.write(r.content)
|
199 |
+
texture_paths.append(path)
|
200 |
+
# If we got one texture successfully, that's enough
|
201 |
+
break
|
202 |
+
except Exception as e:
|
203 |
+
st.warning(f"Could not download texture {url}: {str(e)}")
|
204 |
+
|
205 |
+
# Display texture file information
|
206 |
+
if texture_paths:
|
207 |
+
st.subheader("Texture Files")
|
208 |
+
for tp in texture_paths:
|
209 |
+
st.code(os.path.basename(tp))
|
210 |
+
else:
|
211 |
+
st.warning("No textures were loaded. Your 3D model may appear without textures.")
|
212 |
+
|
213 |
+
# 3) Install custom Python libraries if specified
|
214 |
+
if custom_packages and custom_packages.strip():
|
215 |
+
pkgs = [l.strip() for l in custom_packages.splitlines() if l.strip()]
|
216 |
+
if pkgs:
|
217 |
+
st.info(f"Installing: {', '.join(pkgs)}")
|
218 |
+
try:
|
219 |
+
# Use Python executable from current environment for pip
|
220 |
+
pip_cmd = [sys.executable, "-m", "pip", "install", "--user"] + pkgs
|
221 |
+
pip_res = subprocess.run(
|
222 |
+
pip_cmd,
|
223 |
+
check=True,
|
224 |
+
capture_output=True,
|
225 |
+
text=True,
|
226 |
+
timeout=120 # 2 minute timeout
|
227 |
+
)
|
228 |
+
st.text_area("pip install output", pip_res.stdout + pip_res.stderr, height=100)
|
229 |
+
except Exception as e:
|
230 |
+
st.warning(f"pip install failed: {str(e)}")
|
231 |
+
|
232 |
+
# 4) Prepare environment with minimal variables
|
233 |
+
env = os.environ.copy()
|
234 |
+
env["TEXTURE_PATHS"] = ",".join(texture_paths)
|
235 |
+
|
236 |
+
# 5) Run Blender to build .blend file
|
237 |
+
blend_path = os.path.join(tmp_dir, "scene.blend")
|
238 |
+
|
239 |
+
with st.status("Running Blender to create scene..."):
|
240 |
+
cmd1 = [blender_path, "--background", "--python", script_path]
|
241 |
+
try:
|
242 |
+
r1 = subprocess.run(
|
243 |
+
cmd1,
|
244 |
+
cwd=tmp_dir,
|
245 |
+
env=env,
|
246 |
+
check=True,
|
247 |
+
capture_output=True,
|
248 |
+
text=True,
|
249 |
+
timeout=180 # 3 minute timeout
|
250 |
+
)
|
251 |
+
st.code(r1.stdout.split("\n")[-10:], language="text") # Show just the last few lines
|
252 |
+
except subprocess.TimeoutExpired:
|
253 |
+
st.error("Blender process timed out after 3 minutes.")
|
254 |
+
st.stop()
|
255 |
+
except Exception as e:
|
256 |
+
st.error(f"Blender build failed: {str(e)}")
|
257 |
+
st.stop()
|
258 |
+
|
259 |
+
# Check if blend file was created
|
260 |
+
if not os.path.exists(blend_path):
|
261 |
+
st.error("Blender did not create the expected scene.blend file.")
|
262 |
+
st.stop()
|
263 |
+
|
264 |
+
# 6) Export GLB with animation
|
265 |
+
glb_path = os.path.join(tmp_dir, "animation.glb")
|
266 |
+
|
267 |
+
with st.status("Exporting to GLB format..."):
|
268 |
+
expr = (
|
269 |
+
"import bpy;"
|
270 |
+
"bpy.ops.wm.open_mainfile(filepath=r'" + blend_path + "');"
|
271 |
+
"bpy.ops.export_scene.gltf(filepath=r'" + glb_path +
|
272 |
+
"', export_format='GLB', export_animations=True)"
|
273 |
+
)
|
274 |
+
|
275 |
+
cmd2 = [blender_path, "--background", "--python-expr", expr]
|
276 |
+
try:
|
277 |
+
r2 = subprocess.run(
|
278 |
+
cmd2,
|
279 |
+
cwd=tmp_dir,
|
280 |
+
env=env,
|
281 |
+
check=True,
|
282 |
+
capture_output=True,
|
283 |
+
text=True,
|
284 |
+
timeout=120 # 2 minute timeout
|
285 |
+
)
|
286 |
+
except Exception as e:
|
287 |
+
st.error(f"GLB export failed: {str(e)}")
|
288 |
+
st.stop()
|
289 |
+
|
290 |
+
# 7) Embed GLB inline if it exists
|
291 |
+
if os.path.exists(glb_path):
|
292 |
+
with open(glb_path, 'rb') as f:
|
293 |
+
data = f.read()
|
294 |
+
|
295 |
+
b64 = base64.b64encode(data).decode()
|
296 |
+
|
297 |
+
# Display the 3D model viewer
|
298 |
+
st.subheader("3D Model Viewer")
|
299 |
+
html = f"""
|
300 |
+
<script type="module" src="https://unpkg.com/@google/model-viewer@latest/dist/model-viewer.min.js"></script>
|
301 |
+
<model-viewer
|
302 |
+
src="data:model/gltf-binary;base64,{b64}"
|
303 |
+
alt="3D Model"
|
304 |
+
auto-rotate
|
305 |
+
camera-controls
|
306 |
+
style="width:100%; height:600px;">
|
307 |
+
</model-viewer>
|
308 |
+
"""
|
309 |
+
st.components.v1.html(html, height=650)
|
310 |
+
|
311 |
+
# Add download button
|
312 |
+
st.download_button(
|
313 |
+
"⬇️ Download GLB File",
|
314 |
+
data,
|
315 |
+
file_name="animation.glb",
|
316 |
+
mime="model/gltf-binary"
|
317 |
+
)
|
318 |
+
else:
|
319 |
+
st.error("GLB file was not generated successfully.")
|
320 |
+
|
321 |
+
finally:
|
322 |
+
# Clean up - remove temporary directory
|
323 |
+
try:
|
324 |
+
shutil.rmtree(tmp_dir, ignore_errors=True)
|
325 |
+
except:
|
326 |
+
pass
|
327 |
+
|
328 |
+
# Add helpful information at the bottom
|
329 |
+
st.divider()
|
330 |
+
with st.expander("About this app"):
|
331 |
+
st.markdown("""
|
332 |
+
**Blender 3D Viewer App** lets you:
|
333 |
+
|
334 |
+
- Write Blender Python scripts directly in your browser
|
335 |
+
- Upload custom textures for your 3D models
|
336 |
+
- Generate and visualize 3D models with animations
|
337 |
+
- Download the results as GLB files for use in other applications
|
338 |
+
|
339 |
+
The example script creates a rotating Earth with the uploaded texture.
|
340 |
+
""")
|
341 |
+
|
342 |
+
st.info("If the app isn't working, make sure 'blender' is properly installed in the Spaces environment.")
|
apt.txt
ADDED
@@ -0,0 +1,8 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
+
blender
|
2 |
+
ffmpeg
|
3 |
+
libsm6
|
4 |
+
libxext6
|
5 |
+
libgl1-mesa-glx
|
6 |
+
libglu1-mesa
|
7 |
+
python3-numpy
|
8 |
+
xvfb
|
requirements.txt
ADDED
@@ -0,0 +1,5 @@
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
+
streamlit>=1.25.0
|
2 |
+
requests
|
3 |
+
beautifulsoup4
|
4 |
+
streamlit_ace
|
5 |
+
Pillow
|