13 Gradient🔗ℹ

(new-linear-gradient (->*

((listof (list/c (between/c 0 100) string? (between/c 0 1))))

(

#:x1 (or/c #f number?)

#:y1 (or/c #f number?)

#:x2 (or/c #f number?)

#:y2 (or/c #f number?)

#:gradientUnits (or/c #f 'userSpaceOnUse 'objectBoundingBox)

#:spreadMethod (or/c #f 'pad 'repeat 'reflect)

)

LINEAR-GRADIENT?))

gradient combined by stop_list, each stop has 3 factor: offset, color, opacity.

offset from 0 to 100, means the distance of the color gradient.

use x1, y1, x2, y2 justify gradient’s direction and position.

default is from left to right, x1=0, y1=0, x2=100, y2=0.

(new-radial-gradient (->*

((listof (list/c (between/c 0 100) string? (between/c 0 1))))

(

#:cx (or/c #f (between/c 0 100))

#:cy (or/c #f (between/c 0 100))

#:fx (or/c #f (between/c 0 100))

#:fy (or/c #f (between/c 0 100))

#:r (or/c #f number?)

#:gradientUnits (or/c #f 'userSpaceOnUse 'objectBoundingBox)

#:spreadMethod (or/c #f 'pad 'repeat 'reflect)

)

RADIAL-GRADIENT?))

cx, cy, fx, fy has value 0 - 100, means 0% - 100%, use them to justify gradient’s position and direction.