I don't know if this is off topic, but at least a ruby program is
involved. I have written a small ruby script that renders some things
using the opengl ruby library. Now I want to include the images into
my thesis, and I'd like to use a higher resolution that what my screen
can give. Is it possible to render the image not onto the screen, but
into a file, using a bigger-than-screen resolution? I'm quite an
opengl newbie so maybe this is obious?
I resolved this issue by switching to povray. Now I simply create a
povray description of the scene, and render this in better quality.
One should not always use the hammer
Regards,
Brian
···
On Mon, 28 Feb 2005 12:26:35 +0100, Brian Schröder <ruby.brian@gmail.com> wrote:
Hello Group,
I don't know if this is off topic, but at least a ruby program is
involved. I have written a small ruby script that renders some things
using the opengl ruby library. Now I want to include the images into
my thesis, and I'd like to use a higher resolution that what my screen
can give. Is it possible to render the image not onto the screen, but
into a file, using a bigger-than-screen resolution? I'm quite an
opengl newbie so maybe this is obious?
The OpenGL API works with raw color values packed into an array; RMagick (as far as I can tell) cannot. You should be able to draw your scene offscreen, then do a readPixels() and then convert the resulting array to RMagick Pixel values. Tell RMagick what your intended resolution is, and it will handle the rest.
···
On Feb 28, 2005, at 5:26 AM, Brian Schröder wrote:
ow I want to include the images into
my thesis, and I'd like to use a higher resolution that what my screen
can give. Is it possible to render the image not onto the screen, but
into a file, using a bigger-than-screen resolution? I'm quite an
opengl newbie so maybe this is obious?
On Mon, 28 Feb 2005 20:26:52 +0900, Brian Schröder wrote:
Hello Group,
I don't know if this is off topic, but at least a ruby program is
involved. I have written a small ruby script that renders some things
using the opengl ruby library. Now I want to include the images into
my thesis, and I'd like to use a higher resolution that what my screen
can give. Is it possible to render the image not onto the screen, but
into a file, using a bigger-than-screen resolution? I'm quite an
opengl newbie so maybe this is obious?
I did something like this, except with C and ImageMagick. It was
actually easier for me (for some reason) to process the arrays in C
rather than in Ruby back then.
···
On Tue, 1 Mar 2005 01:02:43 +0900, Eric Peden <eric@ericpeden.com> wrote:
On Feb 28, 2005, at 5:26 AM, Brian Schröder wrote:
> ow I want to include the images into
> my thesis, and I'd like to use a higher resolution that what my screen
> can give. Is it possible to render the image not onto the screen, but
> into a file, using a bigger-than-screen resolution? I'm quite an
> opengl newbie so maybe this is obious?
You might get some use out of RMagick, a Ruby interface for
ImageMagick/GraphicsMagick:
The OpenGL API works with raw color values packed into an array;
RMagick (as far as I can tell) cannot. You should be able to draw your
scene offscreen, then do a readPixels() and then convert the resulting
array to RMagick Pixel values. Tell RMagick what your intended
resolution is, and it will handle the rest.
