# Control points

## One possible way of defining parametric curves:

## Define points near which the curve should pass:

## p1 = (x1,y1), p2 = (x2,y2)...

## For each point pi choose a parameter value ti.

## Simplest choice: 1,2,3,... (uniform parameterization).

## For each point specify a blending function Bi(t),

## which defines how much it contributes to the value