These source excerpts primarily consist of a lecture on computational design and geometry using Rhino and Grasshopper, delivered with some Korean interjections. The lecture focuses on vector, line, polyline, and curve manipulation, including concepts like creating and modifying geometry through code, understanding data structures for points and lines, and interpreting parametric representations of curves. Additional topics covered include geometric operations such as fitting curves, calculating distances, line intersections, and splitting/trimming curves, as well as more advanced concepts like Bézier curves, circle and sphere packing, rectangles, ellipses, and the use of tangent, normal, and binormal vectors to define frames and curve curvature. The speaker also briefly touches on the importance of understanding the RhinoScript Syntax and RhinoCommon APIs and encourages hands-on practice with coding and geometric concepts.

https://namjulee.github.io/njs-lab-public/work?id=2025-introductionToDesignComputation