I was thinking about Seano's post where he is making an animation of the moon rotating around the earth. Lots and lots of layers for Gimp.

Art Of Illusion is a well established java application for ray-tracing/3D rendering and can output all the frames required for an animation. 

   

Too many / too large for a gif so here is a couple of orbits in a video.

Hello forum, this week I am attempting to build an animated logo for my website, which will be a combination of two animated .GIFs when it is completed, (I am working with .XCF format for all the editing). 

As a quick explanation, my website name is comprised of two words, both beginning with the letter 'O', and so I want to make one 'O' spin in a left-to-right direction to represent planet Earth as observed from the common Northern Hemisphere perspective, and the other 'o' half the size, to orbit around the Big 'O', also in a left-to-right direction, to represent the Moon.

Because the Big 'O' will make a complete revolution of 24 layers in 2.0689 seconds, there will need to be 696 layers for the little 'o' to complete one revolution in one minute.  This equates to 24 hours in a day and 29 days in a lunar month (29x24=696).  It will be a huge image file at 1024x512 as .XCF, but I will cut it down to 128x64 for the interlaced .GIF logo on the website.

I am using the 'Spinning-Globe' Script-Fu plugin to create my revolving letter 'O' from a flat base image, and then building both my spinning Big 'O' and little 'o' after rotating the angles of 'spin' for each to their authentic angles, and I have come across two problems which I have tried all day to find a solution for, searching and reading for the last ten hours with no luck, which is surprising.  Hence, as it is now 5pm in Perth, Australia, I have joined the forum to ask for some help.

Here are my two problems:

1. I need to increase my Big 'O' animation from 24 layers to 696, to cause it to rotate 29 revolutions within the centre of the whole animation, however although the layers 'replace' properly when played back over 24 layers, when I use the Files -> Open as Layers to append my 24 layered .XCF animation with a copy of itself, and then playback, it replaces the first half of the two revolutions with the transparent background, as expected, but then the second revolution from the Open as Layers addition does not 'replace' the last layer image with the new layer with different transparency.

How can I Open as Layers (or something else to append an .XCF file with more layers), and maintain the 'replace' attribute so that the previous layer is erased by the new layer, including transparent pixels?

2. As the Spinning-Globe plugin does not allow more than 360 layers, so I have used 348 to create the orbit of the little 'o'. I need to double each layer in a large number, so that layers 1,2,3,... and 1,2,3,... become layers 1,1,2,2,3,3,... and hope that there is some singular method to somehow Open as Layers a copy of my 348 layer image and make each layer fall into place behind its twin from the first.

How can I Open as Layers a copy of my image and append the added image's layers to the current image's with a layer-by-layer sequence, rather than adding all the layers of the new image to the end of the current image?

The first question is the most important, and probably the easiest one to answer, I suspect, although it has certainly not for me all day today.  The second question is one I could probably get around, but it will mean editing 696 frames by hand, and that will take a long long time, so I would be eternally grateful if anyone might know some answer off the top of their head from past experience, of which I have plenty of with GIMP for resizing .JPGs and very little with creating large complex animations.

Thank you for reading this long request for help.  I will check back over the next few days to see if anyone might have any answers to either problem.

Pat David has written a nice article about the GIMP community:

https://patdavid.net/2017/03/community/

I tried doing the "save tool options now" thing but it doesn't work. If I highlight the text and type over it, all the formatting goes to default.

Plus I'd like to not have to change it every single time I need to create a new text box!

Any idea what the problem is? I'm using MacBook Pro btw.

Hi,
just detected that the parameter "PF_DIRNAME" let the filter crash in Windows Gimp 2.8.20.
Try the test filter by Maldonado "test-batch-cartoon" (attached) or even "test-batch-invert":
after picking of the directory the filter crashes.
First detection was on "contactsheet" (see thread on Gimp-chat).
Is something missing in the environment? 

  test-batch-cartoon.zip (Size: 1.83 KB / Downloads: 558)

I have Gimp 2.8.20
Windows 10.
When I try to move using Spacebar-left click combo something hangs. the computer becomes unresponsive. and no matter where I move the mouse, the pointer displays the "move" cross.
I have never had Artrage (4 or 5) hang when using this particular keyboard combination, so I am pretty sure it's in Gimp somewhere.
When this happens, the only way out of Gimp is with task manager; it's completely frozen.

Hi,
I have a Wacom Intuos S 2 that I use to draw with Gimp. I am fairly sure that the pressure sensitivity was working in the beginning, however now, it is not working anymore. My guess is this is a setting I accidentally tweaked. Both my tablet and my stylus are set to screen in the input devices configuration, and the pressure curves are default, but it's still not working, any ideas?