I am trying to build a projector with a spotlight, but i can only project a round image with a lightfunction in blackwhite.
I would like to have a parallel projector instead of a perspective one.
Thanks for help!
HI
This is might be what you are after.
Unreal Engine 4 Tutorial - Video Textures
This is a camera feed like a Security ScreenHi,
thanks for your reply!
This doesnt answer my question unfortunately.
I want to project with a spotlight and a light function a video or a image onto another textured surface.
My actual problem is, that i cannot project colored images and that the shape of the lightbeam is not square
I could use a texture on the , but thats not the way as we want to use the tool.(Prototyping projection mapping show)
Maybe this works with a world coordinate texture and a light?
Thanks for you reply!!
Dear STAFF, i know you must be very busy now, it would great if someone from your team could give me a answer. Thanks in advance 
Be interested to know if there is a way around this aswell. Looks like the light function is purely for a mask image, the light colour is the only thing that applies colour to the light.
Other option is to just fake it if its just a wall projection , overlay a plane with the video texture you want. Downside is if you want to move it or walk in front of it.
I too would love to know what is happened with this. I thought I had posted as well. Apparently not. Same deal as above. It’s very cool that you can use lightfunction. But Colour would be nice if not vital!. Maybe a new kind of light, projector light would be awesome!
I would also like to have the ability to create square/rectangular light shapes!
I don’t even know if anyone is going to see this answer, but I’m going to give it anyway
Make 3 Materials, one for each color channel of your texture
Put each one in a diferent spotlight, and match the ligth color with the channel you chose for the material (If the material is the one with the red channel, then the ligth color should be Red).
Then make all the spotlights have the same attributes and occupy the same local in the 3D space.
I just tested it, and worked with a moving texture, so I think it should work as long you could take each channel separately, but the video textures are more efficient, so, unless you really need the effect of a real projector I think you should use a Video Texture.
Also the quality of the resulting image depends of the material of the that is reflecting the ligth, by what I tested the higher the metallic value the better.
I think I know a way to make the spotligth have the form you want, but I’m without to test it, so, if I remember I will try it later and then share my results.
Thanks for posting this - works well!
Try IES profiles