Adds an image to be used in the style. This API can also be used for updating an image. If the image id was already added, it gets replaced by the new image.
The image can be used in icon-image, fill-pattern, and line-pattern.
A string describing an error if the operation was not successful, empty otherwise.
Parameters
content
An array of four numbers, with the first two specifying the left, top corner, and the last two specifying the right, bottom corner. If present, and if the icon uses icon-text-fit, the symbol's text will be fit inside the content box.
image
Pixel data of the image.
imageId
ID of the image.
scale
Scale factor for the image.
sdf
Option to treat whether image is SDF(signed distance field) or not.
stretchX
An array of two-element arrays, consisting of two numbers that represent the from position and the to position of areas that can be stretched horizontally.
stretchY
An array of two-element arrays, consisting of two numbers that represent the from position and the to position of areas that can be stretched vertically.