r φ N pet age base

Aster flower editor. Use your fingers or mouse to control model. Use mouse wheel to zoom it. In the right window use mouse wheel to animate flower (change its "age"). Drag slpine control points to control flower shape. The third (bold) basis petal (r-curve) is active. See Lathe flowers for comments. Animated asters.
Lathe flowers     updated 3 Jan 2016