aceslowman

What I need to do is take in a large image, slowly pan across until I reach the end of it's dimensions, and switch videos. Running into a few problems with this:

1. Through the typical jit.gl.render and jit.gl.videoplane setup, I am getting a fixed aspect ratio. In theory I just want to be able to resize the window to whatever, while still maintaining the size of the image. Instead I get some letterboxing going on the sides. I have been able to get past this to some degree by scaling up at the jit.gl.render, but then I don't know if that will affect my boundary trigger that comes when the image reaches it's edge...

2. I am using td.rota.jxs for my jit.rota equivalent, which works well for the zooming and offset I need to do. I have noticed that it's difficult to smooth the movement from the offset though, with a line connected to the parameter, it still is *slightly* jerky, and I'm not sure if there is a better way of going about translating a texture smoothly

3. How do dimensions get decided throughout the flow from jit.movie -> jit.videoplane -> jit.gl.render -> jit.window? I've been trying to understand through the docs, but I come out a little more confused, particularly when dealing with gl.

Any help would be appreciated. Attached is an image that I'm using.

questions-about-smooth-movement-and-dimensions-in-jitter-gl

smooth animation using bline synced to jit.world:

gl.videoplane is simply a rectangle in your 3d world, and its aspect ratio depends on its scale values, or if transform_reset is enabled, the aspect rato of the destination window. if you want to preserve the aspect ratio of your source material, use jit.gl.cornerpin with preserve_aspect enabled, as demonstrated above.

Beautiful, thank you Rob. Would you know what direction I might want to look to build a boundary trigger, sending a bang when the offset causes the video to display any of the erase color? I know that rota has different ways of handling bounds, but instead of wrapping or clipping, I need to be able to send a bang to load a new video.

not quite sure i understand your question. are you trying to continuously scroll images?

What I want to do is switch images when a boundary is reached, to prevent any black background from showing. Maybe I could just try to detect when a row or column of all black is encountered, and use that as a kind of boundary trigger. It seems impractical to try to calculate minimum and maximum offset when I have zoom and preserve aspect ratio stuff going on, I can't seem to find a decent way to calculate where the image will end.

questions about smooth movement, and dimensions in jitter / gl