Join us for an afternoon of math… for artists! Bill Kladis and Wyeth Johnson, senior VFX artists at Epic, and David Hill, our Principal Mathematician, will walk us through examples such as Derivatives, Cross Product, Vector Transforms, Sobel Edge and calculating gradients around distance fields. Feel free to ask your questions prior to the stream here on our forums, and they could be featured on the Q&A portion of the stream.
Thursday, November 21 @ 2:00PM ET - Countdown
The streams are free, and I believe everything shown will just use the base UE4 package which is also free.
Just head to either the Twitch or Youtube link from the first post once the timer hits zero (2 PM ET, every thursday usually).
HI my question is how we can shift zero-point (centre) UE4 . for example, if we want to work with a Real Coordinate system like this numbers x 52363706.0m y 5622207.0m z 54.257m its far from the center and its make problem. any way to shift centre to specified coordinate?
I’ve shared David’s slide deck under “Resources” in the OP, but the projects were for visual reference only, and will unfortunately not be shared. However, similar examples to Wyeth’s Niagara particles will be released as part of our Content Examples for Niagara in the future.
The laser graphics is just a plane (or ribbon particle) with gradient map on masked glowing material.
You set ribbon’s origin to raycast origin and ribbon end to hit location in world space…
Then you get the hit surface’s normal and do the math he shows to find vector for the next raycast.
I’m pretty sure it’s a For(x) loop, at least in C++ I just run a loop for the amount of rays I want to test.
We mentioned that some of the examples shown would be built into the Content Examples Project. You can find it in the Learn Tab on the Launcher for all engine versions. Take a look at the Niagara examples!