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How to find surface intersection of 2 surfaces created using trisurf function ?

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Suraj Gurav
Suraj Gurav on 12 Nov 2019
Commented: darova on 25 Nov 2019
Hello All,
I have plotted two surfaces using trisurf function and now interested in getting a line or contour plot as the intersection of these two surfaces.
In the code given below,
fovsurface.vertex=[0 0 0;311.5 260 2562;311.5 -260 2562;-311.5 260 2562;-311.5 -260 2562];
fovsurface.face=[1 2 3;1 2 4;1 4 5;1 3 5];
surface1=trisurf(fovsurface.face, fovsurface.vertex(:,1), fovsurface.vertex(:,2), fovsurface.vertex(:,3),'FaceAlpha',0.5,'FaceColor','r')
daspect([1,1,1]);
hold on
% Creating box
ver = [1 1 0;
0 1 0;
0 1 1;
1 1 1;
0 0 1;
1 0 1;
1 0 0;
0 0 0];
% Define the faces of the unit cubic
fac = [1 2 3 4;
4 3 5 6;
6 7 8 5;
1 2 8 7;
6 7 1 4;
2 3 5 8];
origin=[0,0,2500]; % define vertex of the box, need to think about suitable origin
X=500;Y=500;Z=500; % length of the sides of the box
cube = [ver(:,1)*X+origin(1),ver(:,2)*Y+origin(2),ver(:,3)*Z+origin(3)];
box1=trisurf(fac,cube(:,1), cube(:,2), cube(:,3), 'EdgeColor','y', 'FaceColor','y','FaceAlpha',1.0);
direction=[1 0 0]
rotate(box1,direction,25) % rotate the box1 by 25° about x axis
I am trying to get the intersection of surface1 and the box1. Can anyone please help me or suggest me a solution for this problem.
Thanks in Advance

  5 Comments

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darova
darova on 14 Nov 2019
Can you the cod eyou tried?
In description of this function:
123.PNG
Your cube doesn't look like triangulated (faces have 4 nodes):
555.png
Suraj Gurav
Suraj Gurav on 25 Nov 2019
Hello darova,
Thank you for highlighting this triangulation of surface.
you are right, the cube was not triangulated and may be thats why I was not getting correct output.

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