RSI EXTERNALS and REFERENCE BLOC

    Hello all,


    Does anyone know what the blocs are for ?
    KRC4 KSS8.3 RSI 3.2


    I am looking for a way to create specific bloc. I would like to create a cross product function that I could re-use without dragging all the bloc several times.


    Thanks for your help.
    Alex

    Edited once, last by Alex2070 ().

    Maybe i'm wrong, but for me, the generic transform object only allow a vector to be changed according to fixed parameters ?


    My idea is to have 2 vectors (X1,Y1,Z1) and (X2,Y2,Z2) and do the cross product to have X3 = Y1 * Z2 - Z1 * Y2, Y3 = Z1 * X2 - X1 * Z2, Z3 = X1*Y2 - Y1*X2.
    That way, I have the normal vector for a three points surface.


    My first idea is to create a bloc with 6 IN, 3 OUT, that would do this. However I do not know if we can define our own bloc.

    Hm, that is interesting. I had thought that the Transform object had a generic mode, like using the Geometric Operator in KRL. But after pulling up a TRAFO_UserFrame and looking at it, I can't say it makes much sense. Three Reals input to a 6-D transform, with 3 Reals output? What, do you only get to use the XYZ factors? How does that make any sense? The tooltips, of course, are useless.

    Yes I only use XYZ position in the Cartesian world.


    In fact, I first have 3 points (X,Y,Z,A,B,C). I only keep the X,Y and Z coordinates. I then determine two vectors based on the three points. And then, I apply a cross product between the two vectors to have the normal vector.


    I did it with quite a lot of bloc in the RSI. It works. However it is very hard to read with other functions around.
    I believe it's not possible to create our own bloc otherwise someone would have said it. Maybe on a new version of RSI. :icon_smile:

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