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CONICAL ROSE
Homemade name. |
Cartesian parametrization
n > 0, traced on the cone .
Cylindrical equation: . |
The conical roses are the curves traced on a cone
of revolution for which the projection on the mediatrix plane of the
cone are planar roses.
They can be considered as conical "lifts"
of roses.
Lift of the circle (n = 1):
|
Lift of the quatrefoil curve (n = 2) |
Lift of the trifolium (n = 3) |
In the same way, any curve given by the polar coordinates
can be "lifted on a cone" as .
Here is, for example, a "lift" of a cardioid. |
|
Compare to the clelias
(spherical lifts of roses), and the 3D
basins (lifts on paraboloids).
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© Robert FERRÉOL
2018