plot normal line to a 2d vector given base point coordinates and direction

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Liam McNamara
Liam McNamara 2017-11-17
I'm trying to to plot a line that is normal to a certain vector in 2d space, given that vector's basepoint coordinates and direction. For example, in the image below the vector on the left has (x,y) coordinates of (195, -203) and direction coordinates (u,v) of (-0.081, -0.080), and I would like to plot a line that is perpendicular to the vector and that intersects it at its base. The ultimate goal is to plot 2 of these normal lines (e.g. one for each vector shown below) and find the intersection of the two normal lines to look at instantaneous centre of rotation.

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