Meshy AI文本生成3D模型体验

# Meshy API 调用示例: 文本生成3Dimport requests MESHY_API_KEY = "your_api_key_here"BASE_URL = "https://api.meshy.ai/v1" # 发起文本到3D生成请求payload = {    "mode": "preview",    "negative_art_style": "",    "prompt": "一把中世纪风格的双刃战斧, 铁质刀刃带锈迹, 木质握柄缠绕皮革",    "art_style": "realistic",    "topology": "quad"} headers = {    "Authorization": f"Bearer {MESHY_API_KEY}",    "Content-Type": "application/json"} response = requests.post(f"{BASE_URL}/text-to-3d", json=payload, headers=headers)task = response.json()print(f"Task ID: {task['result']}")

# 提示词工程示例: 构建有效的3D生成提示def build_3d_prompt(object_name, material, style, details=""):    """构建Meshy文本到3D的结构化提示词"""    parts = [style, object_name]    if material:        parts.append(f"made of {material}")    if details:        parts.append(details)    prompt = ", ".join(parts)    return prompt # 使用示例prompt = build_3d_prompt(    object_name="double-bladed battle axe",    material="iron blade with rust, wooden handle wrapped in leather",    style="medieval fantasy style",    details="battle-worn, detailed engravings on blade")print(f"Generated prompt: {prompt}")

# 图像到3D API调用示例import requestsimport base64import time MESHY_API_KEY = "your_api_key_here"BASE_URL = "https://api.meshy.ai/v1" def image_to_3d(image_path):    """从图片生成3D模型"""    with open(image_path, "rb") as f:        image_data = base64.b64encode(f.read()).decode("utf-8")     payload = {        "image_url": f"data:image/png;base64,{image_data}",        "mode": "preview"    }    headers = {        "Authorization": f"Bearer {MESHY_API_KEY}",        "Content-Type": "application/json"    }     resp = requests.post(f"{BASE_URL}/image-to-3d", json=payload, headers=headers)    task_id = resp.json()["result"]    print(f"Image-to-3D task created: {task_id}")    return task_id def poll_task(task_id, interval=5, max_wait=120):    """轮询任务状态直到完成"""    url = f"{BASE_URL}/text-to-3d/{task_id}"    elapsed = 0    while elapsed < max_wait:        resp = requests.get(url, headers={"Authorization": f"Bearer {MESHY_API_KEY}"})        result = resp.json()        status = result.get("status")        if status == "SUCCEEDED":            model_urls = result.get("task_result", {})            print(f"Model ready: {model_urls.get('model_urls', {})}")            return model_urls        elif status == "FAILED":            print("Task failed")            return None        time.sleep(interval)        elapsed += interval    print("Timeout waiting for task")    return None

# 3D生成工具对比评估框架def evaluate_3d_tool(tool_name, criteria):    """评估3D生成工具的各项指标"""    scores = {}    for criterion, weight in criteria.items():        score = float(input(f"{tool_name} - {criterion} (0-10): "))        scores[criterion] = score * weight    total = sum(scores.values())    print(f"{tool_name} total weighted score: {total:.1f}")    return scores # 评估标准与权重criteria = {    "mesh_quality": 0.25,      # 网格质量    "texture_accuracy": 0.25,  # 纹理精度    "generation_speed": 0.20,  # 生成速度    "api_integration": 0.15,   # API集成能力    "cost_efficiency": 0.15    # 成本效益} print("=== Meshy AI ===")meshy_scores = evaluate_3d_tool("Meshy", criteria)print("\n=== Tripo AI ===")tripo_scores = evaluate_3d_tool("Tripo", criteria)

# 批量生成3D资产并导出工作流import requestsimport timeimport os MESHY_API_KEY = "your_api_key_here"BASE_URL = "https://api.meshy.ai/v1"OUTPUT_DIR = "./generated_models"os.makedirs(OUTPUT_DIR, exist_ok=True) # 游戏道具列表game_props = [    {"name": "wooden_chest", "prompt": "medieval wooden treasure chest with iron bindings, realistic"},    {"name": "stone_pillar", "prompt": "ancient stone pillar with carved runes, weathered texture, realistic"},    {"name": "iron_lantern", "prompt": "hanging iron lantern with glass panels, warm glow, medieval style"}] def generate_and_download(prop):    """生成并下载单个3D模型"""    # 发起生成请求    payload = {"prompt": prop["prompt"], "art_style": "realistic", "topology": "quad"}    headers = {"Authorization": f"Bearer {MESHY_API_KEY}", "Content-Type": "application/json"}    resp = requests.post(f"{BASE_URL}/text-to-3d", json=payload, headers=headers)    task_id = resp.json()["result"]     # 等待完成并下载    for _ in range(24):  # 最多等待120秒        time.sleep(5)        status_resp = requests.get(f"{BASE_URL}/text-to-3d/{task_id}",                                   headers={"Authorization": f"Bearer {MESHY_API_KEY}"})        result = status_resp.json()        if result.get("status") == "SUCCEEDED":            model_url = result["task_result"]["model_urls"]["glb"]            model_data = requests.get(model_url).content            filepath = os.path.join(OUTPUT_DIR, f"{prop['name']}.glb")            with open(filepath, "wb") as f:                f.write(model_data)            print(f"Downloaded: {filepath}")            return True    return False # 批量生成for prop in game_props:    success = generate_and_download(prop)    print(f"{prop['name']}: {'OK' if success else 'FAILED'}")

"""Meshy AI 3D建模 - 完整工作流演示演示文本生成3D、任务轮询和结果处理的完整流程"""import requestsimport timeimport jsonimport os # 配置MESHY_API_KEY = os.environ.get("MESHY_API_KEY", "demo_key")BASE_URL = "https://api.meshy.ai/v1" class MeshyClient:    """Meshy AI 3D生成客户端"""     def __init__(self, api_key):        self.api_key = api_key        self.base_url = BASE_URL        self.headers = {            "Authorization": f"Bearer {self.api_key}",            "Content-Type": "application/json"        }     def text_to_3d(self, prompt, art_style="realistic", mode="preview"):        """文本生成3D模型"""        payload = {            "prompt": prompt,            "art_style": art_style,            "mode": mode,            "topology": "quad"        }        resp = requests.post(            f"{self.base_url}/text-to-3d",            json=payload,            headers=self.headers        )        resp.raise_for_status()        return resp.json()["result"]     def image_to_3d(self, image_url, mode="preview"):        """图片生成3D模型"""        payload = {            "image_url": image_url,            "mode": mode        }        resp = requests.post(            f"{self.base_url}/image-to-3d",            json=payload,            headers=self.headers        )        resp.raise_for_status()        return resp.json()["result"]     def get_task_status(self, task_id, task_type="text-to-3d"):        """查询任务状态"""        resp = requests.get(            f"{self.base_url}/{task_type}/{task_id}",            headers=self.headers        )        resp.raise_for_status()        return resp.json()     def wait_for_completion(self, task_id, task_type="text-to-3d",                            interval=5, max_wait=180):        """等待任务完成"""        elapsed = 0        while elapsed < max_wait:            result = self.get_task_status(task_id, task_type)            status = result.get("status", "PENDING")            print(f"  Status: {status} ({elapsed}s elapsed)")            if status == "SUCCEEDED":                return result.get("task_result", {})            elif status == "FAILED":                raise RuntimeError(f"Task failed: {result}")            time.sleep(interval)            elapsed += interval        raise TimeoutError(f"Task {task_id} timed out after {max_wait}s")  # 演示: 文本生成3D工作流def demo_text_to_3d():    """演示文本到3D的完整流程"""    client = MeshyClient(MESHY_API_KEY)     prompt = "medieval double-bladed battle axe, iron blade with rust, wooden handle wrapped in leather"    print(f"Generating 3D model: {prompt}")     # Step 1: 发起生成请求    task_id = client.text_to_3d(prompt, art_style="realistic")    print(f"Task created: {task_id}")     # Step 2: 等待完成    result = client.wait_for_completion(task_id)     # Step 3: 处理结果    model_urls = result.get("model_urls", {})    print("\nGenerated model URLs:")    for fmt, url in model_urls.items():        print(f"  {fmt}: {url}")     return result  # 演示: 批量生成props_to_generate = [    ("wooden shield", "realistic"),    ("magic potion bottle", "fantasy"),    ("iron chandelier", "gothic"),] def demo_batch_generation():    """演示批量生成工作流"""    client = MeshyClient(MESHY_API_KEY)    results = []     for prompt, style in props_to_generate:        print(f"\n--- Generating: {prompt} (style: {style}) ---")        try:            task_id = client.text_to_3d(prompt, art_style=style)            result = client.wait_for_completion(task_id)            results.append({"prompt": prompt, "status": "success", "result": result})        except Exception as e:            results.append({"prompt": prompt, "status": "failed", "error": str(e)})     print(f"\n=== Batch complete: {len(results)} items ===")    for r in results:        print(f"  {r['prompt']}: {r['status']}")     return results  if __name__ == "__main__":    print("=== Meshy AI 3D Modeling Demo ===")    print("Note: Set MESHY_API_KEY environment variable to run.")    print("\nAvailable demos:")    print("1. Single text-to-3d generation")    print("2. Batch generation")    print("\nWorkflow steps:")    print("  1. Create MeshyClient with API key")    print("  2. Call text_to_3d() or image_to_3d()")    print("  3. Poll task status with wait_for_completion()")    print("  4. Download model from returned URLs")