bezier()

Purpose

Used to draw quadratic bezier curves

Description

A Bezier curve (pronounced [bezje] in French) is a parametric curve used in computer graphics and related fields.

Syntax

point = bezier( point1, point2, point3, factor )

point = bezier( point1, point2, point3, point4, factor )

Arguments

point1 The first point

point2 The second point

point3 The third point

point4 Optional fourth point

factor interpolation factor

point A point on the bezier curve

Example

a = 0
c = { gWidth() /2 , gHeight() / 2 }
p1 = { 0, gHeight() / 2 }
p3 = { gWidth(), gHeight() / 2 }
loop
    clear()
    p2 = c + sincos( a ) * ( gHeight() /2 )
    op = p1
    for i = 0 to 16 loop
        p = bezier( p1, p2, p3, i / 15 )
        line( op, p, white )
        op = p
    repeat
    a + = 0.01
    update()
repeat

Associated Commands