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ifsrenderer-linux / Transforms / Crop_Sphere.ifstf

25 lines · ifstf ref: 
@Name: Crop Sphere
@Version: 1.2
@Tags: crop
@Description: Crop into a sphere, select visibility of inside and surface (by Rychveldir)

@Hull: 0
@Inside: 1
@Radius: 1

float r = length(p);

if (r > @Radius) {
  if (random(next) < @Hull) {p = @Radius*p/r;} else {return discarded_point;}
}

if (r < @Radius) {
  if (random(next) < @Inside) {return p;} else {return discarded_point;}
}

if (r < @Radius) {
  if (random(next) < @Inside) {return p;} else {return vec3(1./0.);}
}

return p;