This research focuses on a web-based parametric design platform for generating complex patterns, bridging computational methods with the rich traditions of textile arts. By leveraging parametric modeling, the system provides an environment where shapes, proportions, and relationships can be manipulated in real time, promoting user-driven creativity. A prototype demonstrates diverse pattern outcomes while maintaining an intuitive interface. Early evaluations with pilot users suggest that the parametric engine supports flexibility in exploring design variations, distinguishing it from tools that limit user input or require advanced technical knowledge. Although the research highlights the efficacy of a parametric model, our long-term objective is to integrate Shape Grammar and Color Grammar in future iterations. Such a hybrid approach aims to unite rule-based generation (Shape Grammar) with systematic color relationships (Color Grammar), expanding both aesthetic complexity and user control. Ultimately, this study lays the groundwork for a robust design tool that balances usability with algorithmic sophistication, offering a valuable framework for computational pattern generation.