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lvl10720-Turquoise
20-Turquoise
October 26, 2020
Solved

How to plot a triangle of XY-plane in 3-D for SURFACE PLOT (TO FILL COLOR) ?

  • October 26, 2020
  • 2 replies
  • 3706 views

  Hello Everyone.
How to plot a triangle of XY-plane in 3-D FOR SURFACE PLOT IN ORDER TO "FILL (COLOR) SURFACE" TO THAT TRIANGLE ?
Thanks in advance for your time and help.
  Best Regards.

Best answer by lvl107

  I highly apprreciate your time and help, Werner. 😀😀😀. The method 2 that all I wish it.

     Many thanks, again.

          Best Regards.

               Loi.

2 replies

W
Werner_E25-Diamond I
25-Diamond I
October 26, 2020

basically you have the choice between creating a polygon (a couple of point which may be connected by lines) or a surface patch.

Werner_E_0-1603738273912.png

MC15 sheet attached

 

EDIT: You added the need for a surface plot just after I replied. But you now have that solution, too.
BTW - no need to cry (capital letters)

 

    L
    lvl10720-TurquoiseAuthorAnswer
    20-Turquoise
    October 26, 2020

      I highly apprreciate your time and help, Werner. 😀😀😀. The method 2 that all I wish it.

         Many thanks, again.

              Best Regards.

                   Loi.

    W
    Werner_E25-Diamond I
    25-Diamond I
    October 26, 2020

    You may also use a functional approach and use CreateMesh()

    Werner_E_0-1603743963078.png

     

      V
      24-Ruby IV
      ValeryOchkov24-Ruby IV
      24-Ruby IV
      October 27, 2020

      When I was a student, I solved such a problem in the discipline Descriptive Geometry (Engineering Graphics). Without a computer!
      The coordinates of the vertices of three triangles are given. You need to draw them in three projections and find the coordinates of the common point, the intersection point of the triangles.

      W
      Werner_E25-Diamond I
      25-Diamond I
      October 27, 2020
      @ValeryOchkov wrote:

      When I was a student, I solved such a problem in the discipline Descriptive Geometry (Engineering Graphics). Without a computer!
      The coordinates of the vertices of three triangles are given. You need to draw them in three projections and find the coordinates of the common point, the intersection point of the triangles.

      Ah yes, it was a long time ago, but I still remember it very well. And it was exactly those tasks I had in mind when I created that picture (where the penetration points are NOT constructed. The drawing relies on the correct visibility algorithm.).

       

      The usual procedure was the "Deckgeradenprinzip" (I don't know how whats it called in English).
      The procedure is explained step by step in this Powerpoint presentation: http://members.geometry.at/3d-geometry/Dokumente/deutsch/05_gak/05_08_06_te_a_schnitt_2dreiecke.ppsx

       

      I loved Descriptive Geometry constructions, but a lot of what I learned got obsolete when computer geometry took over. Nevertheless, I believe that we were able to develop a better understanding through the tedious and time consuming constructions.

       

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