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finding the normal on a plane for two known objects

Discussion in 'Scripting' started by garrilla, Mar 17, 2019 at 1:55 PM.

  1. garrilla

    garrilla

    Joined:
    Jan 12, 2016
    Posts:
    5
    I'm trying to find the 'point of reflection' on a plane for two known objects in 3space

    I can't work it out from the manual

    any guidance gratefully recieved
     
  2. WarmedxMints

    WarmedxMints

    Joined:
    Feb 6, 2017
    Posts:
    505
    Do you just want to centre point between two vectors? If so, just use Vector3.Lerp.
    Code (CSharp):
    1. pointOfReflection = Vector3.Lerp(ObjA.position, ObjB.position, 0.5f);
     
  3. garrilla

    garrilla

    Joined:
    Jan 12, 2016
    Posts:
    5
    I'm trying work out where the point of relection would be on a plane

    lets say I
    Vector3 plane = new vector3(0, 2, 1); // scale of 1,1,1,
    vector3 objA = new Vector3(1,1,2);
    vector3 objB = New Vector3(2,2,4);

    there is a point of reflection on the plane, a point where a normal would be if ObjA were an object of incidence and objB an object of reflection.

    think of like a ray, but instead of knowing the starting point and the direction and distance of the 1st reflection, I know only the object and its reflection, not the point the on the plane where it reflects