curve_point()

Evaluates the curve at point t for points a, b, c, d.

Examples

def setup():
    py5.no_fill()
    py5.curve(5, 26, 5, 26, 73, 24, 73, 61)
    py5.curve(5, 26, 73, 24, 73, 61, 15, 65)
    py5.fill(255)
    py5.ellipse_mode(py5.CENTER)
    steps = 6
    for i in range(0, steps+1):
        t = i / steps
        x = py5.curve_point(5, 5, 73, 73, t)
        y = py5.curve_point(26, 26, 24, 61, t)
        py5.ellipse(x, y, 5, 5)
        x = py5.curve_point(5, 73, 73, 15, t)
        y = py5.curve_point(26, 24, 61, 65, t)
        py5.ellipse(x, y, 5, 5)

Description

Evaluates the curve at point t for points a, b, c, d. The parameter t may range from 0 (the start of the curve) and 1 (the end of the curve). a and d are the control points, and b and c are points on the curve. As seen in the example, this can be used once with the x coordinates and a second time with the y coordinates to get the location of a curve at t.

Underlying Processing method: curvePoint

Signatures

curve_point(
    a: float,  # coordinate of first control point
    b: float,  # coordinate of first point on the curve
    c: float,  # coordinate of second point on the curve
    d: float,  # coordinate of second control point
    t: float,  # value between 0 and 1
    /,
) -> float

Updated on March 06, 2023 02:49:26am UTC