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Fix cairo_matrix_transform_distance documentation

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* Use dx and dy instead of dx1 and dy1 to match with the arguments
* Use dx_new and dy_new instead of dx2 and dy2 to match with other parts of the documentation
* Use xx, yx, xy, yy instead of a, b, c, d to match with other parts of the documentation
* Remove the last two sentences that doesn't make sense
This commit is contained in:
Fujii Hironori 2023-02-18 15:33:28 +09:00
parent d7b9695ee4
commit 26fe448be3
1 changed files with 2 additions and 7 deletions
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9
src/cairo-matrix.c
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@ -373,15 +373,10 @@ _cairo_matrix_multiply (cairo_matrix_t *r,
* the returned vector is as follows:
*
* <programlisting>
* dx2 = dx1 * a + dy1 * c;
* dy2 = dx1 * b + dy1 * d;
* dx_new = xx * dx + xy * dy;
* dy_new = yx * dx + yy * dy;
* </programlisting>
*
* Affine transformations are position invariant, so the same vector
* always transforms to the same vector. If (@x1,@y1) transforms
* to (@x2,@y2) then (@x1+@dx1,@y1+@dy1) will transform to
* (@x1+@dx2,@y1+@dy2) for all values of @x1 and @x2.
*
* Since: 1.0
**/
void