Editing Computational geometry
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Yes we can, with a certain restriction. If <math> Ax_0 + By_0 + C > 0 </math>, then the | Yes we can, with a certain restriction. If <math> Ax_0 + By_0 + C > 0 </math>, then the | ||
point lies on one side of the line; if <math> Ax_0 + By_0 + C < 0 </math>, then it lies | point lies on one side of the line; if <math> Ax_0 + By_0 + C < 0 </math>, then it lies | ||
− | on the other side. However, it's a bit pointless to say | + | on the other side. However, it's a bit pointless to say \emph{which} side it |
lies on: does it lie on the left or the right? If the line is horizontal, then | lies on: does it lie on the left or the right? If the line is horizontal, then | ||
this question becomes meaningless. Also, notice that if we flip the signs of | this question becomes meaningless. Also, notice that if we flip the signs of |