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

   1 package org.simantics.district.network.ui.nodes;
   2
   3 import java.awt.Graphics2D;
   4 import java.awt.geom.AffineTransform;
   5
   6 import org.simantics.maps.MapScalingTransform;
   7 import org.simantics.scenegraph.g2d.nodes.UnboundedNode;
   8
   9 public class DistrictRenderingPreparationNode extends UnboundedNode {
  10
  11     private static final long serialVersionUID = 6891204351705486193L;
  12
  13     @Override
  14     public boolean validate() {
  15         // This allows render() to be invoked always.
  16         return true;
  17     }
  18
  19     @Override
  20     public void render(Graphics2D g2d) {
  21         AffineTransform ot = g2d.getTransform();
  22         double scale = DistrictNetworkNodeUtils.getScale(ot);
  23         double scaleRecip = DistrictNetworkNodeUtils.calculateScaleRecip(ot);
  24         int zoomLevel = MapScalingTransform.zoomLevel(ot);
  25         g2d.setRenderingHint(DistrictRenderingHints.KEY_VIEW_SCALE_UNDER_SPATIAL_ROOT, scale);
  26         g2d.setRenderingHint(DistrictRenderingHints.KEY_VIEW_SCALE_RECIPROCAL_UNDER_SPATIAL_ROOT, scaleRecip);
  27         g2d.setRenderingHint(DistrictRenderingHints.KEY_VIEW_ZOOM_LEVEL, zoomLevel);
  28     }
  29
  30 }