| .TH IM_AFFINE 3 "21 December 1999" |
| .SH NAME |
| im_affine \- apply an affine transform to an image |
| .SH SYNOPSIS |
| .B #include <vips/vips.h> |
| |
| int im_affine(in, out, a, b, c, d, dx, dy, x, y, w, h) |
| .br |
| .B IMAGE *in, *out; |
| .br |
| .B double a, b, c, d, dx, dy; |
| .br |
| .B int x, y; |
| .br |
| .B int w, h; |
| |
| .SH DESCRIPTION |
| This function is deprecated. See |
| .B im_affine(3) |
| for the replacement. |
| |
| .B im_affine(3) |
| applies an affine transformation on the image held by the IMAGE descriptor |
| in and puts the result at the location pointed by the IMAGE descriptor out. in |
| many have any number of bands, be any size, and have any non-complex type. |
| |
| The transformation is described by a, b, c, d, dx, dy. The point (x,y) in |
| the input is mapped onto point (X,Y) in the output by |
| |
| X = a * x + b * y + dx |
| Y = c * x + d * y + dy |
| |
| The area of the output image given by w, h, x, y is generated. (0,0) is |
| the position of the transformed top-left-hand corner of the input image. |
| Function im_affine resamples the transformed image using bilinear |
| interpolation. |
| |
| .SH RETURN VALUE |
| The functions return 0 on success and -1 on error. |
| .SH SEE ALSO |
| im_similarity(3) |
