12-09-2018, 08:09 AM
(This post was last modified: 12-09-2018, 08:13 AM by josemendez.)
(11-09-2018, 10:25 PM)arrnav96 Wrote: I notice you have a ObiClothDragger.cs in the asset. It appears to be an appropriate script close to the purpose. So I tried applying this script to the slime object, with the y-position vector force reversed in script, to show a "press" instead of a drag.
This is the result.
It appears to push the ground zero particle quite deep so a proper finger press effect appears.
But the mouse position does not translate correctly onto the screen. It seems that it does not respect the mouse's world positions.
Also, why does the script use vector4?
HI,
I can't reproduce that behavior, tried the same in my computer and it works fine. Can you share your setup options? also, what mesh are you using for the cloth, is it a custom one?
Vector4 (instead of Vector3) is used throughout Obi to take advantage of SIMD. This gives a roughly x4 speedup for all operations involving positions/velocities. The reason is that SSE/NEON/AVX intrinsics can only be used on 16-byte aligned data, and work on a number of operands that is power of 2. Also, the extra operand is used internally to store extra data, and since converting from Vector4 to Vector3 just for the API is a lot of overhead, we simply decided to expose Vector4s. See:
https://en.wikipedia.org/wiki/SIMD