One potential limitation of the Euler spiral based approach is its complexity compared to simpler curve representations like quadratic Béziers. Euler spirals involve higher-order polynomial equations, which can lead to increased computational overhead and potentially slower performance. Additionally, the conversion from cubic Béziers to Euler spirals may require more intricate interpolation techniques, leading to a more involved implementation process.
In terms of quality, the Euler spiral based approach may offer more accurate approximations of parallel curves compared to simpler representations. However, this increased accuracy comes at the cost of computational complexity and potentially higher memory usage. The trade-off between accuracy and performance must be carefully considered when implementing the stroke expansion algorithm using Euler spirals.