This visualization helps understanding the effect of the alpha parameter in Vamana neighbor selection. Add up to 20 points by clicking or entering coordinates. Adjust alpha (0.02–20) to see how it shapes boundaries (alpha = 1 creates perpendicular bisectors). Shaded areas indicate occluded regions. In Vamana Mode, new points must be farther from the query point and outside occluded regions. Use the controls to undo or reset points. Another interesting trivia, if you have have your query point at (0,-x) and your neighbor at (0,x). Then for alpha > 1, you can see the circular region. this region has a radius of 8x|alpha|/ |alpha^2 - 1|, and its centered around (0, 4x|1+alpha^2|/(a^2 - 1)