package org.catacomb.graph.gui;
   
   
   import org.catacomb.be.Position;
   import org.catacomb.report.E;
   import org.catacomb.util.MathUtil;
   
   
  public final class PickableRegion implements Pickable {
  
      double[] xb;
      double[] yb;
      String label;
  
      String tag;
  
      double xref;
      double yref;
  
  
      Object oref;
  
      int icache;
  
  
      // axay should be int[2][npts]
      public PickableRegion(double[][] axay, Object obj) {
          this(axay[0], axay[1], obj);
      }
  
  
  
      public PickableRegion(double[] axb, double[] ayb, Object obj) {
          if (axb == null || axb.length < 2) {
              E.error("need at least 2 elts but got " + axb);
          }
  
          if (axb.length < 3) {
              xb = mmxx(axb);
              yb = mxxm(ayb);
          } else {
              xb = axb;
              yb = ayb;
          }
          oref = obj;
  
  
          // reference points for preserving relative offset of mouse click - could
          // be the center, but shouldn't matter?
          xref = xb[0];
          yref = yb[0];
      }
  
  
  
      public double[] getXPts() {
          return xb;
      }
  
      public double[] getYPts() {
          return yb;
      }
  
  
      public boolean contains(double xq, double yq) {
          return Geom.pointIsInside(xb, yb, xq, yq);
      }
  
  
  
      public void setReferencePoint(Position p) {
          setReferencePoint(p.getX(), p.getY());
      }
  
  
      public Position getReferencePoint() {
          return new Position(xref, yref);
      }
  
  
      public void setPoints(double[][] axy) {
          xb = axy[0];
          yb = axy[1];
      }
  
      public void setPoints(double[] ax, double[] ay) {
          xb = ax;
          yb = ay;
      }
  
      public void setReferencePoint(double xr, double yr) {
          xref = xr;
          yref = yr;
      }
  
      public void moveTo(Position pos) {
          moveTo(pos.getX(), pos.getY());
      }
 
     public void moveTo(double cx, double cy) {
         double dx = cx - xref;
         double dy = cy - yref;
         for (int i = 0; i < xb.length; i++) {
             xb[i] += dx;
             yb[i] += dy;
         }
         xref = cx;
         yref = cy;
     }
 
     public void scaleTo(double z) {
         scaleTo(z, z);
     }
 
     public void scaleTo(double xsz, double ysz) {
         MathUtil.scaleRangeTo(2. * xsz, xb);
         MathUtil.scaleRangeTo(2. * ysz, yb);
     }
 
 
 
     public double getXReference() {
         return xref;
     }
 
     public double getYReference() {
         return yref;
     }
 
 
     public Object getRef() {
         return oref;
     }
 
 
     public void setCache(int ic) {
         icache = ic;
     }
 
     public int getCache() {
         return icache;
     }
 
 
 
 
 
     public double[] mxxm(double[] v) {
         double min = MathUtil.min(v);
         double max = MathUtil.max(v);
         double[] ret = {min, max, max, min};
         return ret;
     }
 
 
     public double[] mmxx(double[] v) {
         double min = MathUtil.min(v);
         double max = MathUtil.max(v);
         double[] ret = {min, min, max, max};
         return ret;
     }
 
 
 
     public void setRegionTag(String s) {
         tag = s;
     }
 
     public String getRegionTag() {
         return tag;
     }
 
 
 }