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 import org.simantics.scenegraph.utils.GeometryUtils;
  10
  11 public class DistrictNetworkNodeUtils {
  12
  13     public static ThreadLocal<AffineTransform> sharedTransform = new ThreadLocal<AffineTransform>() {
  14         protected AffineTransform initialValue() {
  15             return new AffineTransform();
  16         }
  17     };
  18
  19     public static Rectangle2D calculateDrawnGeometry(Point2D p, Rectangle2D margin, Rectangle2D result, double scaleRecip) {
  20         if (result == null)
  21             result = new Rectangle2D.Double();
  22         double mw = margin.getWidth();
  23         double mh = margin.getHeight();
  24         result.setFrame(p.getX() - (mw / 2 * scaleRecip), p.getY() - (mh / 2 * scaleRecip), mw * scaleRecip, mh * scaleRecip);
  25         return result;
  26     }
  27
  28     public static Point2D calculatePoint2D(Point2D point, Point2D result) {
  29         double x = ModelledCRS.longitudeToX(point.getX());
  30         double y = ModelledCRS.latitudeToY(-point.getY()); // Inverse because Simantics Diagram is inverted
  31         if (result == null)
  32             result = new Point2D.Double(x, y);
  33         else
  34             result.setLocation(x, y);
  35         return result;
  36     }
  37
  38     public static AffineTransform getTransformToRectangle(Rectangle2D toDraw, AffineTransform transform) {
  39         if (transform == null)
  40             transform = new AffineTransform();
  41
  42         transform.setTransform(toDraw.getWidth(), 0.0, 0.0, toDraw.getHeight(), toDraw.getCenterX(), toDraw.getCenterY());
  43         return transform;
  44     }
  45
  46     public static double calculateScaleRecip(AffineTransform tr) {
  47         int zoomLevel = MapScalingTransform.zoomLevel(tr);
  48         return 1.0 / (getScale(tr) * Math.sqrt(zoomLevel));
  49     }
  50
  51     static double getScale(AffineTransform tr) {
  52         double scale;
  53         scale = GeometryUtils.getScale(tr);
  54         scale = Math.max(4096, scale); //Math.min(scale, 32768));
  55         return scale;
  56     }
  57 }