So I need 2 2D images and their corresponding 3D points.
I know there is ‘DeprojectScreenToWorld’ but I just return 1 point.
I’m trying to get corresponding all 3D points to 2D points at viewport.
And they must be exported to json or text or something like {(0, 0), (1,2,3)}, {(0,1), (1,1,4)} …
Is there any way to do this with Unreal?
Yes… but not really. If you’re talking about doing this on a 1920x1080 viewport, then you’ll be doing 2073600 line traces, and storing 2073600 pairs of Vector2Ds and Vectors. It’s just too expensive for Blueprints. I think you would be best off doing it with C++, so then you could gradually write your results to a file instead of trying to store a ton of vectors in RAM and then dumping that to a file.
I tried to make it with Blueprints, but it just locks up the Editor and consumes tons of RAM.
Also, no matter how urgent your need may be, PLEASE DON’T DOUBLE-POST! It just fills this forum with spam, and makes people want to help you less
https://forums.unrealengine.com/t/how-to-get-3d-points-from-screen/239901
I apologize to double post, I removed it right after reading your post.
I don’t need 2073600 traces concurrently, Just sequentially doing is fine like iteration (for, while…)
And actual size would become 800 x 600 maybe…
I want to use that data for deeplearning.
So, which blueprint is needed to do this? I started UE4 just few days ago, so I have no idea with it.
