18e1cc4471
* Add pipi_invert() to invert an image's colours.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2718 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
48b881b6fa
* Add pipi_tile, to create image mosaics.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2717 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
edd4a03a1e
* Add the --scale flag. Resizes the image like --geometry, except with
relative parameters.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2716 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
97930521fc
* blur.c: add an argument to the gaussian convolution to specify an angle.
Of course since the kernel is no longer separable, it becomes awfully
slow with large images. Here is a tileable brushed metal texture:
# pipi pipi:random512x512 --wrap --blur 20x0r25 -o image.png
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2715 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
3bcf099f65
* Allow pipi --blur to specify both the X and Y Gaussian sizes. Now we can
create some nice, tileable brushed metal textures:
pipi pipi:random15x15 --geometry 512x512 --wrap --blur 40 \
pipi:random512x512 --wrap --blur 10x0 --autocontrast --wrap \
--blur 20x0 --multiply -o image.png
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2713 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
555ba323e9
* pipi.c: add the --geometry flag (only wxh for now).
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2712 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
b74fad466b
* Implement difference, multiply, divide, screen and overlay blend methods.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2711 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
b089bc14b6
* context.c: add the "swap" command to swap two images in the stack.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2709 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
da84205cde
* subadd.c: add pipi_sub() and pipi_add() as another way to combine two
images.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2708 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
6fb5354eff
* minmax.c: add pipi_min() and pipi_max() as another way to combine two
images.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2706 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
9bd6b555f9
* mean.c: implement pipi_mean() to compute a mean image.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2705 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
31fd250bd2
* Support --autocontrast in pipi.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2704 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
7f3e08d021
* convolution.c: support for wrap-around in convolutions.
* pipi.c: add the "--wrap" flag to tell libpipi that a given image wraps
around.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2703 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
103e0629a2
* pipi.c: implement the "--gray" flag for grayscale conversion.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2702 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
25cdf35a86
* jajuni.c: add Jarvis-Judice-Ninke dithering. It's a Floyd-Steinberg-like
error diffusion method that has fewer high resolution structural artifacts
at the expense of resolution.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2700 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
b658564a1f
* context.c: fix an old bug that was incorrectly rounding down blur values.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2698 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
eb9a270380
* pipi_dither_ordered() now takes two arguments; any image can be used as
the ordered dithering matrix. To get the old behaviour, use:
pipi image.png pipi:bayer8 --dither ordered out.png
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2696 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
d6b8cca4ec
* context.c: implement various dithering commands and Gaussian blur.
* pipi.c: add "--blur" and "--dither" commandline options.
* blur.c dither.c: remove these examples, pipi.c works a lot better:
pipi src.png --blur 10 dest.png
pipi src.png --dither dbs dest.png
(and of course combinations are possible)
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2694 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
0f3943d0fe
* Add functions that handle a stack-based processing queue.
git-svn-id: file:///srv/caca.zoy.org/var/lib/svn/libpipi/trunk@2692 92316355-f0b4-4df1-b90c-862c8a59935f
před 17 roky
sam