+
+ 
+
+ + While the primer covered line/line, line/curve, and curve/curve intersections, there was one other obvious intersection conspicuously missing: + circle/curve intersections. You'd think those were just an extension on the maths used for the other three, but unfortunately, this is not the + case. Rather than using calculus, the only real way to determine where a polynomial curve intersects it is to sample the curve at a resolution + high enough to find you intervals on the curve where there likely is an intersection, then refining that interval until you find actual + intersections. +
++ It is, in fact, rather similar to projecting a point onto a bezier curve where + the point is the circle's center, and where the projection distance actually needs to match the circle radius, so: + let's see how to do that! +
+— Pomax
+