Package prefuse.util.force

Examples of prefuse.util.force.ForceItem

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        // update positions
        Iterator iter = m_vis.visibleItems(m_nodeGroup);
        while ( iter.hasNext() ) {
            VisualItem item = (VisualItem)iter.next();
            ForceItem fitem = (ForceItem)item.get(FORCEITEM);
           
            if ( item.isFixed() ) {
                // clear any force computations
                fitem.force[0] = 0.0f;
                fitem.force[1] = 0.0f;
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     */
    public void reset() {
        Iterator iter = m_vis.visibleItems(m_nodeGroup);
        while ( iter.hasNext() ) {
            VisualItem item = (VisualItem)iter.next();
            ForceItem fitem = (ForceItem)item.get(FORCEITEM);
            if ( fitem != null ) {
                fitem.location[0] = (float)item.getEndX();
                fitem.location[1] = (float)item.getEndY();
                fitem.force[0]    = fitem.force[1]    = 0;
                fitem.velocity[0] = fitem.velocity[1] = 0;
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        startY = Float.isNaN(startY) ? 0f : startY;
      
        Iterator iter = m_vis.visibleItems(m_nodeGroup);
        while ( iter.hasNext() ) {
            VisualItem item = (VisualItem)iter.next();
            ForceItem fitem = (ForceItem)item.get(FORCEITEM);
            fitem.mass = getMassValue(item);
            double x = item.getEndX();
            double y = item.getEndY();
            fitem.location[0] = (Double.isNaN(x) ? startX : (float)x);
            fitem.location[1] = (Double.isNaN(y) ? startY : (float)y);
            fsim.addItem(fitem);
        }
        if ( m_edgeGroup != null ) {
            iter = m_vis.visibleItems(m_edgeGroup);
            while ( iter.hasNext() ) {
                EdgeItem  e  = (EdgeItem)iter.next();
                NodeItem  n1 = e.getSourceItem();
                ForceItem f1 = (ForceItem)n1.get(FORCEITEM);
                NodeItem  n2 = e.getTargetItem();
                ForceItem f2 = (ForceItem)n2.get(FORCEITEM);
                float coeff = getSpringCoefficient(e);
                float slen = getSpringLength(e);
                fsim.addSpring(f1, f2, (coeff>=0?coeff:-1.f), (slen>=0?slen:-1.f));
            }
        }
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        public void reset() {
            Iterator iter = m_vis.visibleItems(m_nodeGroup);
            while ( iter.hasNext() ) {
                VisualItem item = (VisualItem)iter.next();
                ForceItem aitem = (ForceItem)item.get(ANCHORITEM);
                if ( aitem != null ) {
                    aitem.location[0] = (float)item.getEndX();
                    aitem.location[1] = (float)item.getEndY();
                }
            }
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            Iterator iter = m_vis.visibleItems(m_nodeGroup);
            while ( iter.hasNext() ) {
                VisualItem item = (VisualItem)iter.next();
                // get force item
                ForceItem fitem = (ForceItem)item.get(FORCEITEM);
                if ( fitem == null ) {
                    fitem = new ForceItem();
                    item.set(FORCEITEM, fitem);
                }
                fitem.location[0] = (float)item.getEndX();
                fitem.location[1] = (float)item.getEndY();
                fitem.mass = getMassValue(item);
               
                // get spring anchor
                ForceItem aitem = (ForceItem)item.get(ANCHORITEM);
                if ( aitem == null ) {
                    aitem = new ForceItem();
                    item.set(ANCHORITEM, aitem);
                    aitem.location[0] = fitem.location[0];
                    aitem.location[1] = fitem.location[1];
                }
               
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Related Classes of prefuse.util.force.ForceItem

  • prefuse.action.layout.graph.ForceDirectedLayout
  • prefuse.demos.DataMountain$DataMountainForceLayout
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