How do i get the rotation matrix required (a 4 by 4 one) to Rotate an object such that it faces a vector (that is the object's local y axis points towards the vector)
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A $4 \times 4$ rotation matrix? Are you working in $\Bbb{R}^4$? – user771918 Apr 13 '20 at 14:42
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1@user No: they're working in homogeneous coordinates – Ben Grossmann Apr 13 '20 at 14:47
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@S It is unclear what you mean by "faces a vector" or "points towards the vector". – Ben Grossmann Apr 13 '20 at 14:50
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Yes I am using homogeneous coordinates as I am using opengl – Siddhartha Singh Apr 13 '20 at 14:51
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I mean points towards the vector – Siddhartha Singh Apr 13 '20 at 14:51
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By facing the vector I mean that the line representing the vector and the object's y axis coincides – Siddhartha Singh Apr 14 '20 at 03:45
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There’s an infinite number of such rotations. Do you have any other criteria or constraints? Here’s a way to construct one of them. If you do some searching on this site, you’ll find quite a few other questions like yours. – amd Apr 14 '20 at 07:05