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I had seen OpenGL statement to draw a line using two points. However, my requirement is to draw a line using the following detail
Im developing function in c++ using openGL library.
Any help is most appreciated.
The answer depends on the semantics of what you’ve termed a direction vector.
In the computer graphics context I would normally take that term to mean a unit vector facing in the specified direction. Whereas in a mathematics context you might simply mean the relative vector that results from subtracting the two points’ coordinates.
[Using P1 and P2 to represent the required two points, and V for the vector].
In the former case, you also need a specify a length for the vector, so you’ll need:
whereas in the latter case, it’s just trivially