How to know whether or not selective line passes through surface?

OpenGL
1

I have my very own OpenGL program which is c++ based running on Windows.

I have questions

  • How to know whether the selective line passes through certain surface
  • How to easily calculate collision point coordinate if the line passes through certain surface

With above, I think I can do object Boolean operation? :cry:
It would be much appreciated if there are algorithms that I can refer to or simply show me the way to do.

I’ve attached screenshots to visually show what I’m trying to do

Line_through_Sphere
Line_through_Sphere1909×1116 86.9 KB
Line_through_Triangle
Line_through_Triangle1910×1117 82.2 KB

Thank you very much!!

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