Special Rose Surfaces

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In the plane , a rose (or rhodonea) is a curve
, given by the polar equation
, where
is a positive rational number in lowest terms. This is a directing curve of a special rose surface
presented in this Demonstration.
Contributed by: Sonja Gorjanc (University of Zagreb) (March 2011)
Open content licensed under CC BY-NC-SA
Snapshots
Details
This Demonstration shows the parts of special rose surfaces , where
is the simplest form of the rational number that you choose using the setter. For every choice of
and
there are three possibilities for surface presentation: red colored surface (Snapshot 1), petals of surface colored by different colors (Snapshot 2), and the illustration of surface construction as the system of circles (Snapshot 3).
is an algebraic surface with the following properties:
• If is odd and
, the order of
is
,
is an
-fold point,
is an
-fold line, and there are
petals.
• If is even and
, the order of
is
,
is
-fold point,
is a
-fold line, and and there are
petals.
• If is odd and
, the order of
is
,
is a
-fold point, and there are
petals.
• If is even and
, the order of
is
,
is a
-fold point, and there are
petals.
Based on work by the author in "Rose Surfaces and Their Visualizations," submitted to J. Geom. Graph.
Reference:
G. Loria, Spezielle Algebraische und Transzendente Ebene Kurven, Leipzig-Berlin: B. G. Teubner, 1910.
Permanent Citation