Return 0.5 * log(r) * r / dr * DistanceFactor Using FragM's DE Raytracer, a "Multibrot Stack" distance estimator can be implemented like this: uniform float Iterations // e.g. FragM 2.0.0 has a ag with complex dual numbers for automatic differentiation. Syntopia has a blog with a series of posts on Distance Estimated 3D Fractals, applicable within the software Fragmentarium and its updated fork FragM. The ray-marching algorithm calculates the distance from a point on the ray (in any direction, not necessarily the ray direction), and steps the ray forward by this amount, thus the ray gets closer and closer to the object (or passes by it and hits the background). The distance estimate tells you, given a point, how far the nearest point in the fractal is.
It is possible to render 3D fractals by ray-marching with distance estimators.
0 kommentar(er)
