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Coordinates after rotation

Discussion in 'Scripting' started by ToomToomToom, Jan 14, 2020.

  1. ToomToomToom

    ToomToomToom

    Joined:
    Jul 8, 2017
    Posts:
    6
    Hi,
    I need to recalculate given coordinates (A) to predict location of the object, after rotation (B).
    What is idea for doing that with C# - should I use some kind of loop for that?
    upload_2020-1-14_7-40-58.png

    Thank you in advance for the answer.
     
    ToomToomToom, Jan 14, 2020
    #1

  2. Antypodish

    Antypodish

    Joined:
    Apr 29, 2014
    Posts:
    10,594
    You need trigonometry, to calculate x and y based on angle.
    For 2D Cartesian space, you need use cosine for x and sine for y position.
    Look into trigonometry equations.
    You also need position offset.
     
    Antypodish, Jan 14, 2020
    #2

  3. ToomToomToom

    ToomToomToom

    Joined:
    Jul 8, 2017
    Posts:
    6

    Thanks. Could you please give me some example how to do this with c#?
     
    ToomToomToom, Jan 14, 2020
    #3

  4. Antypodish

    Antypodish

    Joined:
    Apr 29, 2014
    Posts:
    10,594
    In fact, if you just rotate 90 degrees, then you just flip axis coordinates, with relevant offset.
    So no need for any trigonometry really.
     
    Antypodish, Jan 14, 2020
    #4
    ToomToomToom likes this.