How do I create one big stage that spans the output of three projectors?
This is surely straightforwards, but I can't figure it out...
I have three projectors attached to my computer. I am not using a TH2Go
I would like to project them on to a wall so that their outputs are stacked one above the other.
The audience sees a projection screen that is (say) 2160px high and 1280px wide (3 x 720p)
I would like to project an object that appears at the top of the top screen and moves all the way down to the bottom of the bottom screen.
I would also like to project an image that spans all three projector images.
How do I do these things?!
Heres how I would do this.Setup your stages to match your projectors resolutions.Add a 'Background Color' actor and set its size to match your 2160 x 1280 _canvas_ size. (you may want to change the preferences scale to setting to 'largest')Build your video up on this _canvas_ (background)_,_ with mixers etc.. to create the output you want.Before routing to the projectors, use the 'Crop' actor to cut the large video into 3 matching 720p feeds that you then connect to your projector actors.
Maybe I'm being a bit dim, but I'm having trouble figuring out your instructions.
Perhaps I wasn't clear. Here's what I'd like the audience to see:
OK, I played with this a bit, since Crop didn't do exactly what I expected... and Michels solution required a warp/stretch.
The solution is the 'Chop Pixels' actor.Attached is a test file with a few approaches.Chop Pixels (top, orange ball) is my choice for best approach.
I learned a neat trick form @mark recentlyHook up your image to a 3d projector, set the destination to "render", and create a virtual stage with your desired size. Then output that virtual stage to chop pixel actors and split it out to three projectors.Maybe useful in addition to the above tips.F
Dear All,Because of this discussion, I created a handy user actor to be able to chop an image into a specific number of horz/vert divisions, and then to select which portion you want to appear at the output. Have a look here: http://troikatronix.com/troikatronixforum/discussion/2869/grid-chopper-user-actor-easier-selection-of-specific-portion-of-imageBest Wishes,Mark
Thank you so much everyone.
More amazing things about Isadora: many ways to skin a cat, and a great, responsive, community of users and support.
Ryan and Michel, thanks for your suggestions, and Mark, thanks so much for the user actor. Guys, I really appreciate your help.
@fubbi, that's a great tip, thanks!