org.simantics.district.network.ui/src/org/simantics/district/network/ui/nodes/DistrictNetworkNodeUtils.java

   1 package org.simantics.district.network.ui.nodes;
   2
   3 import java.awt.geom.AffineTransform;
   4 import java.awt.geom.Point2D;
   5 import java.awt.geom.Rectangle2D;
   6
   7 import org.simantics.district.network.ModelledCRS;
   8 import org.simantics.maps.MapScalingTransform;
   9
  10 public class DistrictNetworkNodeUtils {
  11
  12     public static Rectangle2D calculateDrawnGeometry(Point2D p, Rectangle2D margin, Rectangle2D result, double scaleRecip) {
  13         if (result == null)
  14             result = new Rectangle2D.Double();
  15         double mw = margin.getWidth();
  16         double mh = margin.getHeight();
  17         result.setFrame(p.getX() - (mw / 2 * scaleRecip), p.getY() - (mh / 2 * scaleRecip), mw * scaleRecip, mh * scaleRecip);
  18         return result;
  19     }
  20
  21     public static Point2D calculatePoint2D(Point2D point, Point2D result) {
  22         double x = ModelledCRS.longitudeToX(point.getX());
  23         double y = ModelledCRS.latitudeToY(-point.getY()); // Inverse because Simantics Diagram is inverted
  24         if (result == null)
  25             result = new Point2D.Double(x, y);
  26         else
  27             result.setLocation(x, y);
  28         return result;
  29     }
  30
  31     public static AffineTransform getTransformToRectangle(Rectangle2D toDraw, AffineTransform transform) {
  32         if (transform == null)
  33             transform = new AffineTransform();
  34
  35         transform.setTransform(toDraw.getWidth(), 0.0, 0.0, toDraw.getHeight(), toDraw.getCenterX(), toDraw.getCenterY());
  36         return transform;
  37     }
  38
  39     public static double calculateScaleRecip(AffineTransform tr) {
  40         int zoomLevel = MapScalingTransform.zoomLevel(tr);
  41         double t = 1.0 / Math.sqrt(zoomLevel);
  42         return t;
  43     }
  44 }