Ashwin-1709 / daa-assignment-1

CS F364 - Design and Analysis of Algorithms - Assignment 1

CS F364 - Design and Analysis of Algorithms

Objective: Decomposing any arbitrary polygon into convex polygons

In this assignment we have implemented the algorithm described in the following paper (decomposition + merging):

Fernández, J., Cánovas, L., & Pelegrın, B. (2000). Algorithms for the decomposition of a polygon into convex polygons. European Journal of Operational Research, 121(2), 330-342

Doubly Connected Edge List (DCEL)

The decomposition is stored in a Doubly Connected Edge List (DCEL) Data Structure. DCEL consists of three main sub-data-structures, namely Vertex, Edge and Face.

Visualisation of the decomposition is written in python using matplotlib

Building and running:

1. Install CMake.

2. Run cmake . -B build to generate the makefile.

3. Run make -C build to build.

4. ./build/polygon_decomp to run.

   Input format: Number of vertices of polygon $N$ in first line and coordinates of points of polygon in subsequent $N$ lines (in clockwise order only)

You can use cmake --build build --target doxygen to build the docs, which will be available at build/html/index.html