Added README with abstract

README.md

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+# From Flying Balls to Colliding Polygons
+
+## Abstract
+
+> (text taken from the abstract of my report that you can find
+> [here](https://github.com/karma-riuk/bachelor-project-report/blob/main/bachelorproject.pdf)
+
+Physics engines are a fun and interesting way to learn about the laws of
+physics, as well as computer science. They provide a real-time simulation of
+common physical phenomena, and therefore illustrate theoretical concepts such as
+the equations that dictate the motion of objects.
+
+The goal of this project was to extend an existing physics engine built for
+demonstration purposes. This engine was initially designed and developed to
+simulate circular objects ("balls") in 2D.
+
+With this project, we intended to extend this engine to also simulate arbitrary
+polygons, again in a physically accurate way. The main technical challenges of
+the project is therefore the correct simulation of the dynamics of rigid,
+polygonal objects. In particular, we developed a model of polygonal rigid
+objects:
+
+- we implemented a simulation of their inertial motion, possibly in the
+  presence of a constant force field such as gravity;
+- we detect collisions between objects;
+- we compute and then simulate the dynamic effects of collisions.
+
+The simulations are animated and displayed in real-time. It is also therefore
+crucial that the simulation code be efficient to obtain smooth animations.