It says t is between 0 and 1, but what exactly is t and how do we get it in this example? Similarly, in the equation a+t(b-a), are a and b the coordinates of the points a and b?
sushain
@a_s, let the closest point on the line be $x$. Then, we're solving for $t$ where $x = a + t(b-a)$. You're correct in your interpretation of what $a$ and $b$ are.
It says t is between 0 and 1, but what exactly is t and how do we get it in this example? Similarly, in the equation a+t(b-a), are a and b the coordinates of the points a and b?
@a_s, let the closest point on the line be $x$. Then, we're solving for $t$ where $x = a + t(b-a)$. You're correct in your interpretation of what $a$ and $b$ are.