| """ |
| Small-model layer. Default: Qwen/Qwen2.5-Coder-1.5B-Instruct. |
| |
| Swap MODEL_ID to Qwen2.5-Coder-0.5B-Instruct (smaller, stronger "build small" |
| pitch) or -3B-Instruct (safety net) via env var. The model only ever emits the |
| scene JSON defined in scene.py — never raw Three.js. |
| |
| UPGRADE PATH (recommended for reliability): replace the free-form generate() |
| with grammar-constrained decoding (outlines / xgrammar / llguidance) bound to |
| the Scene schema, so output is *guaranteed* valid JSON. See CLAUDE_CODE_BRIEF.md. |
| """ |
| from __future__ import annotations |
|
|
| import json |
| import logging |
| import os |
| import threading |
|
|
| MODEL_ID = os.environ.get("MODEL_ID", "Qwen/Qwen2.5-Coder-3B-Instruct") |
| MAX_PROMPT_CHARS = int(os.environ.get("MAX_PROMPT_CHARS", "500")) |
|
|
| log = logging.getLogger(__name__) |
|
|
| SYSTEM = """You convert a short scene description into a JSON scene graph for a 3D renderer. |
| Output ONLY valid JSON. No markdown, no comments, no prose, no code fences. |
| |
| Schema — primitive object: |
| { |
| "background": "#RRGGBB", |
| "objects": [ |
| { |
| "shape": "box|sphere|cylinder|cone|torus|torusKnot|plane|tetrahedron|icosahedron|dodecahedron|octahedron|capsule|ring|circle|tube|roundedBox", |
| "position": [x, y, z], |
| "rotation": [x, y, z], |
| "scale": [x, y, z], |
| "color": "#RRGGBB", |
| "material": "standard|basic|phong|wireframe", |
| "preset": "gold|chrome|glass|neon|matte|plastic", |
| "metalness": 0.0-1.0, |
| "roughness": 0.0-1.0, |
| "emissive": "#RRGGBB", |
| "params": {} |
| } |
| ], |
| "lights": [ |
| {"type": "ambient|directional|point", "color": "#RRGGBB", "intensity": 1.0, "position": [x, y, z]} |
| ], |
| "animation": {"type": "none|rotate|float|orbit", "speed": 1.0, "axis": "x|y|z"} |
| } |
| |
| For stars, badges, shields, hearts, hexagons, coins, logos, or emblems use an EXTRUDE object instead: |
| { |
| "type": "extrude", |
| "shape": "star|heart|hexagon|badge|shield", |
| "depth": 0.2, |
| "bevel": true, |
| "color": "#RRGGBB", |
| "preset": "gold|chrome|glass|neon|matte|plastic", |
| "metalness": 0.0-1.0, |
| "roughness": 0.0-1.0, |
| "emissive": "#RRGGBB", |
| "position": [x, y, z] |
| } |
| |
| For 3D text (words, numbers, short labels) use a TEXT3D object (Latin chars only, max 24 chars): |
| { |
| "type": "text3d", |
| "text": "HELLO", |
| "size": 0.8, |
| "depth": 0.2, |
| "bevel": true, |
| "color": "#RRGGBB", |
| "preset": "gold|chrome|glass|neon|matte|plastic", |
| "metalness": 0.0-1.0, |
| "roughness": 0.0-1.0, |
| "position": [x, y, z] |
| } |
| Use text3d for: single words, numbers, initials, short labels (max 2 text objects per scene). |
| For a badge/emblem with text on it, use the badge_with_text TEMPLATE — never place text3d manually on an extrude: |
| { |
| "background": "#0d1117", |
| "template": { |
| "name": "badge_with_text", |
| "shape": "star|shield|hexagon|badge|heart", |
| "text": "WORD", |
| "color_badge": "#RRGGBB", |
| "color_text": "#RRGGBB", |
| "metalness": 0.0-1.0, |
| "roughness": 0.0-1.0, |
| "preset_badge": "gold|chrome|glass|neon|matte|plastic" |
| }, |
| "lights": [...], |
| "animation": {...} |
| } |
| The template positions and scales the text automatically — never set text position or size. |
| |
| Material preset notes: |
| - gold/chrome: use for shiny metallic looks; color overrides the base hue |
| - glass: transparent refractive; color adds a tint |
| - neon: glowing edge; set color to the desired glow color |
| - matte: no shine, soft diffuse |
| - plastic: slight sheen, clearcoat |
| Omit preset to use metalness/roughness directly. |
| |
| To arrange multiple objects together use a GROUP node: |
| { |
| "type": "group", |
| "layout": "row|column|stack|grid|none", |
| "gap": 0.3, |
| "cols": 3, |
| "position": [x, y, z], |
| "rotation": [x, y, z], |
| "scale": [x, y, z], |
| "children": [ ...any node types, including nested groups... ] |
| } |
| Layout rules: |
| - "row": children spaced along x-axis, auto-centered |
| - "column" or "stack": children spaced along y-axis, auto-centered (first child = bottom) |
| - "grid": children tiled on x-z plane, cols wide |
| - "none": children keep their own positions |
| When layout is set, DO NOT set child positions — the compiler places them automatically. |
| Groups can be nested. Use groups for: rows of items, stacked arrangements, any scene needing multiple evenly-spaced objects. |
| |
| Keep scenes small (1-6 objects total). Center the composition near the origin.""" |
|
|
| FEWSHOT = [ |
| {"role": "user", "content": "a glowing green icosahedron floating in the dark"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#05060a", |
| "objects": [{ |
| "shape": "icosahedron", "color": "#39ff14", "material": "standard", |
| "metalness": 0.2, "roughness": 0.3, "emissive": "#0a3a0a", |
| "position": [0, 0, 0], "params": {"radius": 0.8} |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.4}, |
| {"type": "point", "color": "#39ff14", "intensity": 2.0, "position": [2, 2, 2]} |
| ], |
| "animation": {"type": "float", "speed": 1.2, "axis": "y"} |
| })}, |
| {"role": "user", "content": "three glowing cubes stacked into a tower"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#0b0e14", |
| "objects": [ |
| {"shape": "box", "color": "#39ff14", "emissive": "#0a3a0a", "material": "standard", |
| "metalness": 0.2, "roughness": 0.3, "position": [0, 0.8, 0]}, |
| {"shape": "box", "color": "#39ff14", "emissive": "#0a3a0a", "material": "standard", |
| "metalness": 0.2, "roughness": 0.3, "position": [0, 0.0, 0]}, |
| {"shape": "box", "color": "#39ff14", "emissive": "#0a3a0a", "material": "standard", |
| "metalness": 0.2, "roughness": 0.3, "position": [0, -0.8, 0]}, |
| ], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.5}, |
| {"type": "directional", "intensity": 1.1, "position": [5, 8, 6]}, |
| ], |
| "animation": {"type": "rotate", "speed": 1.0, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a red sphere floating above a flat grey plane"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#1a1a2e", |
| "objects": [ |
| {"shape": "sphere", "color": "#ff4444", "emissive": "#330000", "material": "standard", |
| "metalness": 0.1, "roughness": 0.5, "position": [0, 0.8, 0], "params": {"radius": 0.5}}, |
| {"shape": "plane", "color": "#555566", "material": "standard", |
| "metalness": 0.0, "roughness": 0.9, "position": [0, -0.2, 0], |
| "rotation": [-1.5708, 0, 0], "params": {"width": 6, "height": 6}}, |
| ], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.4}, |
| {"type": "directional", "color": "#ffffff", "intensity": 1.2, "position": [5, 8, 6]}, |
| ], |
| "animation": {"type": "float", "speed": 0.8, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a classic burger"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#1a1209", |
| "objects": [{ |
| "type": "stack", |
| "axis": "y", |
| "gap": 0.02, |
| "children": [ |
| {"shape": "sphere", "color": "#c8a96e", "params": {"radius": 0.45}}, |
| {"shape": "cylinder", "color": "#3a8a3a", "params": {"radiusTop": 0.52, "radiusBottom": 0.52, "height": 0.1}}, |
| {"shape": "cylinder", "color": "#5a3a1a", "params": {"radiusTop": 0.5, "radiusBottom": 0.5, "height": 0.18}}, |
| {"shape": "cylinder", "color": "#c8a96e", "params": {"radiusTop": 0.52, "radiusBottom": 0.55, "height": 0.32}}, |
| ] |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.5}, |
| {"type": "directional", "intensity": 1.3, "position": [5, 8, 6]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.8, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "build me a snowman"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#0d1b2a", |
| "template": {"name": "snowman", "color_body": "#e8e8e8", "color_hat": "#1a1a1a"}, |
| "lights": [ |
| {"type": "ambient", "intensity": 0.5}, |
| {"type": "directional", "intensity": 1.3, "position": [5, 8, 6]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.5, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a cute capsule character with a rounded body"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#0d1b2a", |
| "objects": [ |
| {"shape": "capsule", "color": "#ff6b6b", "emissive": "#330000", "material": "standard", |
| "metalness": 0.1, "roughness": 0.5, "position": [0, 0, 0], |
| "params": {"radius": 0.35, "length": 0.6}}, |
| {"shape": "sphere", "color": "#ffe8cc", "material": "standard", |
| "metalness": 0.0, "roughness": 0.8, "position": [0, 0.72, 0], |
| "params": {"radius": 0.28}}, |
| ], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.5}, |
| {"type": "directional", "intensity": 1.3, "position": [5, 8, 6]}, |
| ], |
| "animation": {"type": "float", "speed": 1.0, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a stack of soft rounded boxes"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#0b0e14", |
| "objects": [{ |
| "type": "stack", "axis": "y", "gap": 0.08, |
| "children": [ |
| {"shape": "roundedBox", "color": "#ff9f43", "material": "standard", |
| "metalness": 0.1, "roughness": 0.4, |
| "params": {"width": 1.2, "height": 0.4, "depth": 1.2, "radius": 0.12}}, |
| {"shape": "roundedBox", "color": "#ee5a24", "material": "standard", |
| "metalness": 0.1, "roughness": 0.4, |
| "params": {"width": 1.0, "height": 0.4, "depth": 1.0, "radius": 0.12}}, |
| {"shape": "roundedBox", "color": "#c0392b", "material": "standard", |
| "metalness": 0.1, "roughness": 0.4, |
| "params": {"width": 0.8, "height": 0.4, "depth": 0.8, "radius": 0.12}}, |
| ], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.5}, |
| {"type": "directional", "intensity": 1.3, "position": [5, 8, 6]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.8, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a gold star badge"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#1a1205", |
| "objects": [{ |
| "type": "extrude", "shape": "star", "depth": 0.3, "bevel": True, |
| "color": "#ffd700", "material": "standard", |
| "metalness": 0.9, "roughness": 0.2, "emissive": "#332200", |
| "position": [0, 0, 0], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.3}, |
| {"type": "directional", "color": "#fff8e0", "intensity": 2.0, "position": [3, 5, 4]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.6, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a shield emblem"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#0d1117", |
| "objects": [{ |
| "type": "extrude", "shape": "shield", "depth": 0.25, "bevel": True, |
| "color": "#3a6bc4", "material": "standard", |
| "metalness": 0.5, "roughness": 0.3, "emissive": "#061833", |
| "position": [0, 0, 0], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.4}, |
| {"type": "directional", "color": "#ffffff", "intensity": 1.8, "position": [4, 6, 3]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.5, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a glass star badge"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#0a0a18", |
| "objects": [{ |
| "type": "extrude", "shape": "star", "depth": 0.25, "bevel": True, |
| "color": "#aaddff", "preset": "glass", |
| "position": [0, 0, 0], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.6}, |
| {"type": "directional", "color": "#ffffff", "intensity": 2.0, "position": [5, 8, 4]}, |
| {"type": "point", "color": "#88ccff", "intensity": 1.5, "position": [-3, 2, 3]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.5, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a neon glowing shield"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#050508", |
| "objects": [{ |
| "type": "extrude", "shape": "shield", "depth": 0.2, "bevel": True, |
| "color": "#ff2266", "preset": "neon", |
| "position": [0, 0, 0], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.1}, |
| {"type": "point", "color": "#ff2266", "intensity": 3.0, "position": [0, 1, 2]}, |
| ], |
| "animation": {"type": "float", "speed": 1.0, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a chrome hexagon"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#1a1a2e", |
| "objects": [{ |
| "type": "extrude", "shape": "hexagon", "depth": 0.3, "bevel": True, |
| "color": "#ffffff", "preset": "chrome", |
| "position": [0, 0, 0], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.4}, |
| {"type": "directional", "color": "#ffffff", "intensity": 2.5, "position": [4, 6, 3]}, |
| {"type": "point", "color": "#88aaff", "intensity": 1.0, "position": [-3, 2, 2]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.6, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "the word HELLO in 3D"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#0b0e14", |
| "objects": [{ |
| "type": "text3d", "text": "HELLO", |
| "size": 0.8, "depth": 0.2, "bevel": True, |
| "color": "#88ccff", "metalness": 0.3, "roughness": 0.4, |
| "position": [0, 0, 0], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.4}, |
| {"type": "directional", "color": "#ffffff", "intensity": 2.0, "position": [5, 8, 5]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.5, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a gold 3D number 1"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#1a1205", |
| "objects": [{ |
| "type": "text3d", "text": "1", |
| "size": 1.2, "depth": 0.3, "bevel": True, |
| "color": "#ffd700", "preset": "gold", |
| "position": [0, 0, 0], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.3}, |
| {"type": "directional", "color": "#fff8e0", "intensity": 2.5, "position": [4, 6, 4]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.5, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a star badge with the text PRO"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#0d1117", |
| "template": { |
| "name": "badge_with_text", |
| "shape": "star", |
| "text": "PRO", |
| "color_badge": "#3a6bc4", |
| "color_text": "#ffffff", |
| "metalness": 0.7, |
| "roughness": 0.2, |
| }, |
| "lights": [ |
| {"type": "ambient", "intensity": 0.4}, |
| {"type": "directional", "color": "#ffffff", "intensity": 2.0, "position": [3, 5, 4]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.5, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a shield badge with the text NEW"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#0d1117", |
| "template": { |
| "name": "badge_with_text", |
| "shape": "shield", |
| "text": "NEW", |
| "color_badge": "#22aa66", |
| "color_text": "#ffffff", |
| "metalness": 0.5, |
| "roughness": 0.3, |
| }, |
| "lights": [ |
| {"type": "ambient", "intensity": 0.4}, |
| {"type": "directional", "color": "#ffffff", "intensity": 2.0, "position": [4, 6, 4]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.5, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a row of three coins"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#1a1205", |
| "objects": [{ |
| "type": "group", |
| "layout": "row", |
| "gap": 0.4, |
| "children": [ |
| {"type": "extrude", "shape": "badge", "depth": 0.08, "bevel": True, |
| "color": "#ffd700", "preset": "gold"}, |
| {"type": "extrude", "shape": "badge", "depth": 0.08, "bevel": True, |
| "color": "#ffd700", "preset": "gold"}, |
| {"type": "extrude", "shape": "badge", "depth": 0.08, "bevel": True, |
| "color": "#ffd700", "preset": "gold"}, |
| ], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.3}, |
| {"type": "directional", "color": "#fff8e0", "intensity": 2.5, "position": [4, 6, 4]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.5, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "a tall trophy: a star on a stacked column"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#1a1205", |
| "objects": [{ |
| "type": "group", |
| "layout": "stack", |
| "gap": 0.1, |
| "children": [ |
| {"shape": "cylinder", "color": "#ffd700", "preset": "gold", |
| "params": {"radiusTop": 0.08, "radiusBottom": 0.18, "height": 1.2}}, |
| {"type": "extrude", "shape": "star", "depth": 0.2, "bevel": True, |
| "color": "#ffd700", "preset": "gold"}, |
| ], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.3}, |
| {"type": "directional", "color": "#fff8e0", "intensity": 2.5, "position": [4, 6, 4]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.5, "axis": "y"}, |
| })}, |
| {"role": "user", "content": "three cubes in a row"}, |
| {"role": "assistant", "content": json.dumps({ |
| "background": "#0b0e14", |
| "objects": [{ |
| "type": "group", |
| "layout": "row", |
| "gap": 0.3, |
| "children": [ |
| {"shape": "box", "color": "#ff6b6b", "material": "standard", |
| "metalness": 0.1, "roughness": 0.5}, |
| {"shape": "box", "color": "#ffd700", "material": "standard", |
| "metalness": 0.1, "roughness": 0.5}, |
| {"shape": "box", "color": "#6bffb8", "material": "standard", |
| "metalness": 0.1, "roughness": 0.5}, |
| ], |
| }], |
| "lights": [ |
| {"type": "ambient", "intensity": 0.5}, |
| {"type": "directional", "intensity": 1.3, "position": [5, 8, 6]}, |
| ], |
| "animation": {"type": "rotate", "speed": 0.6, "axis": "y"}, |
| })}, |
| ] |
|
|
| _tok = None |
| _model = None |
| _device = None |
| _lock = threading.Lock() |
|
|
|
|
| def _load(): |
| global _tok, _model, _device |
| with _lock: |
| if _model is None: |
| import torch |
| from transformers import AutoModelForCausalLM, AutoTokenizer |
| log.info("Loading model %s", MODEL_ID) |
| _device = "cuda" if torch.cuda.is_available() else "cpu" |
| _tok = AutoTokenizer.from_pretrained(MODEL_ID) |
| _model = AutoModelForCausalLM.from_pretrained( |
| MODEL_ID, torch_dtype=torch.bfloat16 |
| ).to(_device) |
| log.info("Model loaded on %s", _device) |
| return _tok, _model, _device |
|
|
|
|
| def run_llm(prompt: str, max_new_tokens: int = 512) -> str: |
| """Generate raw text (expected to be a JSON object) from the model.""" |
| if len(prompt) > MAX_PROMPT_CHARS: |
| prompt = prompt[:MAX_PROMPT_CHARS] |
| log.warning("Prompt truncated to %d chars", MAX_PROMPT_CHARS) |
|
|
| tok, model, device = _load() |
|
|
| messages = [{"role": "system", "content": SYSTEM}, *FEWSHOT, |
| {"role": "user", "content": prompt}] |
| text = tok.apply_chat_template( |
| messages, tokenize=False, add_generation_prompt=True) |
| inputs = tok(text, return_tensors="pt").to(device) |
|
|
| out = model.generate( |
| **inputs, |
| max_new_tokens=max_new_tokens, |
| do_sample=True, |
| temperature=0.4, |
| top_p=0.9, |
| pad_token_id=tok.eos_token_id, |
| ) |
| gen = out[0][inputs.input_ids.shape[1]:] |
| result = tok.decode(gen, skip_special_tokens=True) |
| log.info("Generated %d chars for prompt: %.60s", len(result), prompt) |
| return result |
|
|
|
|
| def mock_scene_json(prompt: str) -> str: |
| """Deterministic, no-GPU generator so the UI can be built/tested fast.""" |
| p = (prompt or "").lower() |
|
|
| color = "#88ccff" |
| if "neon" in p or "green" in p: |
| color = "#39ff14" |
| elif "red" in p: |
| color = "#ff4444" |
| elif "gold" in p or "yellow" in p: |
| color = "#ffcc33" |
| elif "purple" in p or "violet" in p: |
| color = "#9b59ff" |
|
|
| material = "standard" |
| if "glass" in p: |
| material = "phong" |
| elif "wire" in p: |
| material = "wireframe" |
|
|
| shape = "box" |
| for key, val in [ |
| ("torusknot", "torusKnot"), ("knot", "torusKnot"), |
| ("torus", "torus"), ("donut", "torus"), |
| ("sphere", "sphere"), ("ball", "sphere"), |
| ("cone", "cone"), ("cylinder", "cylinder"), |
| ("ico", "icosahedron"), ("dodeca", "dodecahedron"), |
| ("octa", "octahedron"), ("cube", "box"), |
| ]: |
| if key in p: |
| shape = val |
| break |
|
|
| anim = "rotate" |
| if "float" in p: |
| anim = "float" |
| elif "still" in p or "static" in p: |
| anim = "none" |
| elif "orbit" in p: |
| anim = "orbit" |
|
|
| objects = [{"shape": shape, "color": color, "material": material, |
| "position": [0, 0, 0]}] |
| if "tree" in p: |
| objects = [ |
| {"shape": "cone", "color": "#2e8b57", "position": [0, 0.6, 0], |
| "params": {"radius": 0.7, "height": 1.4}}, |
| {"shape": "cylinder", "color": "#8b5a2b", "position": [0, -0.4, 0], |
| "params": {"radiusTop": 0.15, "radiusBottom": 0.2, "height": 0.8}}, |
| ] |
|
|
| scene = { |
| "background": "#0b0e14", |
| "objects": objects, |
| "lights": [ |
| {"type": "ambient", "intensity": 0.5}, |
| {"type": "directional", "intensity": 1.1, "position": [5, 8, 6]}, |
| ], |
| "animation": {"type": anim, "speed": 1.0, "axis": "y"}, |
| } |
| return json.dumps(scene) |
|
|
