Hi, I have a question about Niagara.
From some Niagara examples, I saw “Mesh Tricoord” and used it.
However, even after watching Unreal Engine code, I cannot understand what it is.
What I think is, mesh is a triangle and it has three points(vector 3D) in the world space.
What I found is, TriCoord can be broken to “Tri (int32)” and “bary coord(vector, 3d)”.
I understand bary coord means barycentric coordinate. However…
What is Tri??? Why triangle plane in the 3D world can be represented with one integer and one 3d vector?
Also, I saw some code that make particle’s position with its Tri and Bary coord, (1/3, 1/3, 1/3).
Is each value of Bary coord always between 0 and 1?
Why particle’s position can be represented with one integer and (1/3, 1/3, 1/3)?
Please help me!