Examples of org.gvt.util.ChsTransform

org.gvt.util.ChsTransform
This class is for transforming certain world coordinates to device ones. Following example transformation translates (shifts) world coordinates by (10,20), scales objects in the world to be twice as tall but half as wide in device coordinates. In addition it flips the y coordinates. (wox,woy): world origin (x,y) (wex,wey): world extension x and y (dox,doy): device origin (x,y) (dex,dey): device extension x and y (dox,doy)=(10,20) *--------- dex=50 | wey=50 | | | | | | | *------------- wex=100 | (wox,woy)=(0,0) dey=-100 In most cases, we will set all values to 1.0 except dey=-1.0 to flip the y axis. @author Ugur DogrusozCopyright: i-Vis Research Group, Bilkent University, 2007 - present

    double radialSep = Math.max(maxDiagonalInTree(tree),
      CoSELayout.DEFAULT_RADIAL_SEPARATION);
    CoSELayout.branchRadialLayout(centerNode, null, 0, 359, 0, radialSep);
    Rectangle bounds = LGraph.calculateBounds(tree);


    ChsTransform chsTransform = new ChsTransform();
    chsTransform.setDeviceOrgX(bounds.getLeft().x);
    chsTransform.setDeviceOrgY(bounds.getTop().y);
    chsTransform.setWorldOrgX(startingPoint.x);
    chsTransform.setWorldOrgY(startingPoint.y);


    for (int i = 0; i < tree.size(); i++)
    {
      LNode node = tree.get(i);
      node.transform(chsTransform);
    }


    PrecisionPoint bottomRight =
      new PrecisionPoint(bounds.getBottomRight());


    return chsTransform.inverseTransformPoint(bottomRight);
  }

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    // create a transformation object (from Eclipse to layout). When an
    // inverse transform is applied, we get upper-left coordinate of the
    // drawing or the root graph at given input coordinate (some margins
    // already included in calculation of left-top).


    ChsTransform trans = new ChsTransform();
    Point leftTop = this.lGraphManager.getRoot().updateLeftTop();


    if (leftTop != null)
    {
      trans.setWorldOrgX(newLeftTop.preciseX);
      trans.setWorldOrgY(newLeftTop.preciseY);


      trans.setDeviceOrgX(leftTop.x);
      trans.setDeviceOrgY(leftTop.y);


      List nodes = this.lGraphManager.getNodeList();
      Iterator iter = nodes.iterator();


      while (iter.hasNext())

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    double radialSep = Math.max(maxDiagonalInTree(tree),
      CoSELayout.DEFAULT_RADIAL_SEPARATION);
    CoSELayout.branchRadialLayout(centerNode, null, 0, 359, 0, radialSep);
    Rectangle bounds = LGraph.calculateBounds(tree);


    ChsTransform chsTransform = new ChsTransform();
    chsTransform.setDeviceOrgX(bounds.getLeft().x);
    chsTransform.setDeviceOrgY(bounds.getTop().y);
    chsTransform.setWorldOrgX(startingPoint.x);
    chsTransform.setWorldOrgY(startingPoint.y);


    for (int i = 0; i < tree.size(); i++)
    {
      LNode node = tree.get(i);
      node.transform(chsTransform);
    }


    PrecisionPoint bottomRight =
      new PrecisionPoint(bounds.getBottomRight());


    return chsTransform.inverseTransformPoint(bottomRight);
  }

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Related Classes of org.gvt.util.ChsTransform

org.eclipse.draw2d.geometry.PrecisionDimension

org.eclipse.draw2d.geometry.PrecisionPoint

org.eclipse.draw2d.geometry.PrecisionRectangle

org.gvt.layout.AbstractLayout

org.gvt.layout.CoSELayout

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