HANGZHOU SPORTS PARK NBBJ & CCDI Hangzhou Sports Park, (Hangzhou, China), Image Courtesy of [NBBJ] Project Two is a continuation of Project One. It recreates the Ellipse-Array and scaling ratio definitions in Project One through one node by using Python scripting inside Grasshopper. Moreover, Project Two develops a Geometry-Array node ,based on the Python node Ellipse-Array, which can utilize any geometries including ellipses. Additionally, Project Two uses Ladybug tools to run solar radiation analysis to understand the effect of large petals on the stadium bowl at different orientations. Also, it utilizes GA to optimize petal coverage for shading the stadium bowl. PART 1: Array Definition using Python Script: A- Ellipse-Array An ellipse-array node was created through Python script. It can array the petals and alternate between small and large petals. It has the capability to change and control: the size of the ellipse the number of petals t