如何将信封移动到特定点？

Question

Point p = /*a point*/;
ReferencedEnvelope envelope = mapPane.getDisplayArea();
/*envelope.moveTo or something like that? */
mapPane.setDisplayArea(envelope);

如何移动信封，使中心位置成为给定点的位置？我只看到 "expand"-methods.

Answer 1

最简单的方法是创建一个以新点为中心的新包络线：

ReferencedEnvelope env = fr.getMapPane().getDisplayArea();
double x,y;//new centre
double w2 = env.getWidth()/2.0;
double h2 = env.getHeight()/2.0;
Coordinate c = new Coordinate(x,y);
ReferencedEnvelope renv = new ReferencedEnvelope(c.x-w2,c.x+w2,c.y-h2,c.y+h2,env.getCoordinateReferenceSystem());

如何将信封移动到特定点？

How do you move an envelope to a specific point?

java

geotools