Function

Summary

Gets the pixel values from an image.

Package

graphics-ports

Signature

image-access-transfer-from-image image-access

Arguments

image-access

An Image Access object

Description

The function image-access-transfer-from-image gets the pixel values from an image object, making them accessible via a corresponding Image Access object image-access .

image-access must be an Image Access object returned by make-image-access.

Notionally image-access-transfer-from-image transfers the pixel data from the window system into image-access , though it might do nothing on platforms where the window system allows direct access to the pixel data.

The pixel data can be accessed using image-access-pixel.

Example

See the file
examples/capi/graphics/image-access.lisp .

See also

image-access-transfer-to-image
image-access-pixel
free-image-access
make-image-access