Move polygon points based on center location?

Question

Would someone have an example using Turf moving all polygon points from one location to another based on a new center point?

For example, let’s say I have calculated a center based on where the points were originally created.

Then I need to move those points to a new location based on that calculated center.

As always any help would be great!

Answer 1

You need to use transformTranslate

var poly = turf.polygon([[[0,29], [3.5,29], [2.5,32], [0,29]]]);

//calculates the centroid of the polygon
var center = turf.centroid(poly);

var from = turf.point([center.geometry.coordinates[0], center.geometry.coordinates[1]]);

var to = turf.point([4, 35]);

//finds the bearing angle between the points
var bearing = turf.rhumbBearing(from, to);

//calculates the distance between the points
var distance = turf.rhumbDistance(from, to);

//moves the polygon to the distance on the direction angle.
var translatedPoly = turf.transformTranslate(poly, distance, bearing)