lerp_color

lerp_color()

Description

Blends two colors to find a third color somewhere between them. The amt parameter is the amount to interpolate between the two values where 0.0 is equal to the first color, 0.1 is very near the first color, 0.5 is halfway in between, etc. An amount below 0 will be treated as 0. Likewise, amounts above 1 will be capped at 1. This is different from the behavior of lerp(), but necessary because otherwise numbers outside the range will produce strange and unexpected colors.

The way that colors are interpolated depends on the current color mode.

Examples

from proceso import Sketch


p5 = Sketch()
p5.describe("Four rectangles one tan, brown, brownish purple, purple, with white outlines & 20×60")

p5.color_mode(p5.RGB)
p5.stroke(255)
p5.background(51)
start = p5.color(218, 165, 32)
end = p5.color(72, 61, 139)
p5.color_mode(p5.RGB) # Try changing to HSB.
inter_a = p5.lerp_color(start, end, 0.33)
inter_b = p5.lerp_color(start, end, 0.66)
p5.fill(start)
p5.rect(10, 20, 20, 60)
p5.fill(inter_a)
p5.rect(30, 20, 20, 60)
p5.fill(inter_b)
p5.rect(50, 20, 20, 60)
p5.fill(end)
p5.rect(70, 20, 20, 60)

Syntax

lerp_color(c1, c2, amt)

Parameters

c1: str | list[int] Interpolate from this color

c2: str | list[int] Interpolate to this color

amt: float Number between 0 and 1

Returns

str Interpolated color as a RGBA color string