We present SpatialPrompt, an Extended Reality(XR) system that turns spatial sketches into executable constraints for controllable 3D generation. Users draw rough structures with a 3D pen and add voice prompts for semantic and stylistic intent. The system supports iterative refinement and synchronous co-creation in shared space with color-coded contributions. Implemented on Apple Vision Pro with Logitech Muse and Meshy, a heuristic evaluation suggests that the workflow is intuitive and supports shared understanding in collaborative creation, while revealing needs for faster generation and clearer feedback.

翻译：我们提出SpatialPrompt，一个扩展现实（XR）系统，能将空间草图转换为可执行约束，用于可控的三维生成。用户使用3D笔绘制粗略结构，并添加语音提示以表达语义和风格意图。该系统支持在共享空间中进行迭代优化和同步协作创作，并通过颜色编码区分不同贡献。该系统在Apple Vision Pro上实现，集成了Logitech Muse和Meshy工具。启发式评估表明，该工作流直观且能促进协作创作中的共享理解，同时揭示了加速生成和提供更清晰反馈的需求。