Question

I have a line with 2 points. I know the distance between the 2 points. I also calculated the angle of the line.

My target is to get a point that lies at 25% ot the line.

I calculate the y of this point with (dist/100)*25.

My only problem is calculating the x of the point. I suspect i have all the variables needed i only can’t seem to find how to calculate the x. Does anybody know this?

Answer 1

You have a segment (not line) with endpoints P0 (coordinates x0,y0) and P1(x1,y1). New point P lies at this segment and distance |P0P| = 0.25 * |P0P1|, if their coordinates are:

x = x0 + 0.25 * (x1-x0)
y = y0 + 0.25 * (y1-y0)