How to Find a Point Coordinates Between Other Two Points
by
·
Join the DZone community and get the full member experience.
Join For FreeTheory: Given a segment from point A to point B, our
goal is to find a C point coordinates at a specified distance on that segment.
Let’s say that
DT is the distance of the AB segment and D is the distance from point A to
point C.
Using the distance
formula, we can find the distance from point A to point B:
Now, we can
easily find the C point coordinates like this:
That’s it. From
Java perspective, the mechanism looks like this:
package calculatelinepoints;
public class CalculateLinePoints {
public static void main(String[] args) {
// point A coordinates
double a = 20.0;
double b = 10.0;
// point B coordinates
double c = 50.0;
double d = 40.0;
// calculate distance between the two points
double DT = Math.sqrt(Math.pow((c - a), 2) + Math.pow((d - b), 2));
double D = 20.0; // distance to point C
double x;
double y;
double T = D / DT;
// finding point C coordinate
x = (1 - T) * a + T * c;
y = (1 - T) * b + T * d;
System.out.println("Point C coordinates:\n x: " + x + "\n y: " + y);
}
}http://e-blog-java.blogspot.ie/2013/03/how-to-find-point-coordinates-between.html
Java (programming language)
Published at DZone with permission of A. Programmer. See the original article here.
Opinions expressed by DZone contributors are their own.
Comments