Ellipsenalgo aus Formelsammlung kreieren

[Kas Ob.]

Zitat von Rollo62:

Zitat von Kas Ob.:

Step = 1/Sqrt(a^2+b^2)

Like said, it is the sqrt that makes me nervous, but its maybe needed here.
I think it depends a lot on the shape, how to handle it.
For lines, circles, squares, a pre-calculated step will work nicely.
For ellipses and other complex paths, maybe you always need varying step-sizes during drawing.

A overdraw pixel will happen for the suggested above for sure, but it will not affect the drawing, the only enhancement to do is to check if x and y changed from last pixel/point then draw, due to approximation of course, as for dynamic, it will return to the same check no matter what algorithm been used, for more accurate approximation you need to calculate the derivative of the speed of pixel on the slope then divide it by the radius, but not that radius you will calculate from (0,0) the center of the ellipse, this will be more complex for no, benefit visually or not.

the only case when it corrupt drawing is when the ellipse is more like a line then an ellipse, when one of the axis is barely moving while the other taking the full speed for the next step.