Requested feature from work. I think adding this lets somebody get rid of some
other tool.
IBA::render_text() is a very basic "render text into the image pixels"
functionality, exposed on the command line as oiiotool --text. You can fully
trick it out with optional arguments like:
oiiotool --create 640x480 3 --text:x=20:y=400:size=24:font="Ariel
Narrow.ttf" "Hello, world. This is my text." -o out.exr
Functionality is very limited -- all you have control over is font name, size,
position, color, and the text. There's no formatting or wrapping, and text
that ends up off the edge of the image just disappears. But this set of
functionality is still really handy if you're just trying to slap a quick
annotation on an image from the command line.
I used Freetype for the font rendering. It's found automatically at build
time, and if it's not present the render_text function just does nothing.
Currentlyt, if you want anything but the default font, you generally need to
give a full pathname to the font file. It tries to be clever in that if you
only give the filename but not the full path (like I did above), it checks a
default directory for it. But it's not like it really does any kind of
comprehensive search. We may want to beef that up, but I figured that this was
good enough for an initial code review and seek some feedback.
You can merge this Pull Request by running:
git pull https://github.com/lgritz/oiio lg-text
Or you can view, comment on it, or merge it online at:
https://github.com/OpenImageIO/oiio/pull/392
-- Commit Summary --
* Basic text rendering into imges with ImageBufAlgo::render_text and oiitool
--text
-- File Changes --
M src/CMakeLists.txt (1)
M src/cmake/externalpackages.cmake (22)
M src/doc/oiiotool.tex (81)
M src/include/imagebufalgo.h (14)
M src/libOpenImageIO/CMakeLists.txt (6)
M src/libOpenImageIO/imagebufalgo.cpp (116)
M src/oiiotool/oiiotool.cpp (74)
-- Patch Links --
https://github.com/OpenImageIO/oiio/pull/392.patch
https://github.com/OpenImageIO/oiio/pull/392.diff
---
Reply to this email directly or view it on GitHub:
https://github.com/OpenImageIO/oiio/pull/392
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