Parametric Curves: Criteria

This shows the criteria needed to draw a parametic equation via SVG. The following are defined: (1)origin, (2)width, (3)amplitude, (4)point spacing These control placement of the plotted x,y values of the parametric equation. This example uses the parmetric equation of a spiral to demonstrate the performance of the criteria
Scenerio:
Spiral Parametric Equation:
x=αcos(α), y=αsin(α)   0>α<12π/4
Create a spiral with:
(1)origin [ x:, y: ]
(2)width
(3)amplitude
(4)point spacing


SVG Source:
Javascript:
OK in:IE11/CH32/FF23