How do i find the intersection point between a line and a patch?

Kamil Amari

2019 11 19

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Hello,

In order to find the intersection between a line and a patch object, I typed :

[p1 p2 p3] = deal([1 0 0],[0 1 0],[0 0 1]); % creating 3 points that define a triangle
G = [1/3 1/3 1/3];
origin = [0 0 0];
P = [G',origin'];
l = line(P(1),P(2),P(3)); %the line I'm studying
obj = patch('Faces',[1 2 3],'Vertices',[p1;p2;p3]); %my patch object for simplification
I = intersect(p,l);

The problem is that the intersection I is a 1x0 patch with empty properties.

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Kamil Amari 2019-11-20

I get that you can do that for a triangle, but what if I have a more complex polygon? In fact I want to use this on an object made of 8000 faces and calculating the intersection between lines and each faces takes 60s.