A "squircle" is a funny term to describe a sort of square with rounded corners that's not a square nor a circle. The formula for a squircle, which is in fact a superellipse, is in its simpler implicit formulation:
X^4+Y^4=1
I don't know if you can mathematically describe this surface with NURBS (like conics that just need a degree 2, two control points NURBS with proper weight), anyway I couldn't build a squircle using sketched splines, probably because you can't add weights.
I tried with datum curves from equation, in cartesian form:
x=t
y=(1-t^4)^(1/4)
and although the shape is nice, the curvature is all bubbly and irregular. I also noticed that even a simple circle parmetrized in this way has an irregular curvature. If you describe a circle as a function of angle than the curvature is ok, but again if I apply the same reasoning to squircles:
x=cos(t*90)^(1/2)
y=sin(t*90)^(1/2)
curvature is not smooth.
So in the end the question is, is it possible to model such a shape in CREO? Oh I don't have ISDX to check
Paolo
X^4+Y^4=1
I don't know if you can mathematically describe this surface with NURBS (like conics that just need a degree 2, two control points NURBS with proper weight), anyway I couldn't build a squircle using sketched splines, probably because you can't add weights.
I tried with datum curves from equation, in cartesian form:
x=t
y=(1-t^4)^(1/4)
and although the shape is nice, the curvature is all bubbly and irregular. I also noticed that even a simple circle parmetrized in this way has an irregular curvature. If you describe a circle as a function of angle than the curvature is ok, but again if I apply the same reasoning to squircles:
x=cos(t*90)^(1/2)
y=sin(t*90)^(1/2)
curvature is not smooth.
So in the end the question is, is it possible to model such a shape in CREO? Oh I don't have ISDX to check
Paolo