Examples with Layout org.opennms.features.topology.api.Layout used on opensource projects

Example 1 with Layout

use of org.opennms.features.topology.api.Layout in project opennms by OpenNMS.

the class ManualLayoutAlgorithm method updateLayout.

@Override
public void updateLayout(Graph graph) {
    final LayoutEntity layoutEntity = layoutManager != null ? layoutManager.loadLayout(graph) : null;
    if (layoutEntity != null) {
        // if we have a persisted layout, we apply it ...
        final Layout layout = graph.getLayout();
        final Collection<Vertex> vertices = graph.getDisplayVertices();
        for (Vertex vertex : vertices) {
            PointEntity pointEntity = layoutEntity.getPosition(vertex.getNamespace(), vertex.getId());
            layout.setLocation(vertex, new Point(pointEntity.getX(), pointEntity.getY()));
        }
    } else {
        // otherwise we apply the manual layout ...
        final Collection<Vertex> vertices = graph.getDisplayVertices();
        final Layout layout = graph.getLayout();
        final long notLayedOutCount = vertices.stream().filter(v -> {
            Point location = layout.getLocation(v);
            return location.getX() == 0 && location.getY() == 0;
        }).count();
        final long noVertexLocationCount = vertices.stream().filter(v -> {
            boolean hasNoX = v.getX() == null || v.getX().intValue() == 0;
            boolean hasNoY = v.getY() == null || v.getY().intValue() == 0;
            return hasNoX && hasNoY;
        }).count();
        // manually apply the Grid Layout
        if (notLayedOutCount == vertices.size() && noVertexLocationCount == vertices.size()) {
            new GridLayoutAlgorithm().updateLayout(graph);
        } else if (noVertexLocationCount != vertices.size()) {
            // If we have at least one vertex with coordinates != (0,0), we apply them to the layout
            for (Vertex vertex : vertices) {
                layout.setLocation(vertex, new Point(vertex.getX(), vertex.getY()));
            }
        } else {
            // This is only done when the user explicitly saves the layout
            for (Vertex vertex : vertices) {
                Point p = layout.getLocation(vertex);
                layout.setLocation(vertex, p);
            }
        }
    }
}

Example 2 with Layout

use of org.opennms.features.topology.api.Layout in project opennms by OpenNMS.

the class SimpleLayoutAlgorithm method updateLayout.

@Override
public void updateLayout(Graph graph) {
    Layout layout = graph.getLayout();
    int r = 100;
    int cx = 500;
    int cy = 500;
    int i = 0;
    for (Vertex vertex : graph.getDisplayVertices()) {
        s_log.debug("Laying out vertex id : {}", vertex);
        if (i == 0) {
            layout.setLocation(vertex, new Point(cx, cy));
        } else {
            int n = i - 1;
            double a = (2 * Math.PI) / (graph.getDisplayVertices().size() - 1);
            int x = (int) (r * Math.cos(n * a) + cx);
            int y = (int) (r * Math.sin(n * a) + cy);
            layout.setLocation(vertex, new Point(x, y));
        }
        i++;
    }
}

Example 3 with Layout

use of org.opennms.features.topology.api.Layout in project opennms by OpenNMS.

the class LayoutManager method persistLayout.

public void persistLayout(GraphContainer graphContainer) {
    final List<VertexRef> vertexRefs = toVertexRef(graphContainer.getGraph().getDisplayVertices());
    final String id = calculateHash(vertexRefs);
    LayoutEntity layoutEntity = layoutDao.get(id);
    if (layoutEntity == null) {
        layoutEntity = new LayoutEntity();
        layoutEntity.setId(id);
        layoutEntity.setCreated(new Date());
        layoutEntity.setCreator(graphContainer.getApplicationContext().getUsername());
    }
    layoutEntity.setUpdated(new Date());
    layoutEntity.setUpdator(graphContainer.getApplicationContext().getUsername());
    final Layout layout = graphContainer.getGraph().getLayout();
    final List<VertexPositionEntity> vertexPositionEntities = vertexRefs.stream().map(vertexRef -> {
        final Point p = layout.getLocation(vertexRef);
        PointEntity pointEntity = new PointEntity();
        pointEntity.setX((int) p.getX());
        pointEntity.setY((int) p.getY());
        final VertexPositionEntity vertexEntity = new VertexPositionEntity();
        vertexEntity.setVertexRef(toVertexRefEntity(vertexRef));
        vertexEntity.setPosition(pointEntity);
        return vertexEntity;
    }).collect(Collectors.toList());
    layoutEntity.getVertexPositions().clear();
    for (VertexPositionEntity eachVertexPosition : vertexPositionEntities) {
        layoutEntity.addVertexPosition(eachVertexPosition);
    }
    layoutDao.saveOrUpdate(layoutEntity);
}

Example 4 with Layout

use of org.opennms.features.topology.api.Layout in project opennms by OpenNMS.

the class FRLayoutAlgorithm method updateLayout.

@Override
public void updateLayout(final Graph graph) {
    final Layout graphLayout = graph.getLayout();
    SparseGraph<VertexRef, EdgeRef> jungGraph = new SparseGraph<VertexRef, EdgeRef>();
    Collection<Vertex> vertices = graph.getDisplayVertices();
    for (Vertex v : vertices) {
        jungGraph.addVertex(v);
    }
    Collection<Edge> edges = graph.getDisplayEdges();
    for (Edge e : edges) {
        jungGraph.addEdge(e, e.getSource().getVertex(), e.getTarget().getVertex());
    }
    FRLayout<VertexRef, EdgeRef> layout = new FRLayout<VertexRef, EdgeRef>(jungGraph);
    // Initialize the vertex positions to the last known positions from the layout
    Dimension size = selectLayoutSize(graph);
    layout.setInitializer(initializer(graphLayout, (int) size.getWidth() / 2, (int) size.getHeight() / 2));
    // Resize the graph to accommodate the number of vertices
    layout.setSize(size);
    while (!layout.done()) {
        layout.step();
    }
    // Store the new positions in the layout
    for (Vertex v : vertices) {
        graphLayout.setLocation(v, new Point(layout.getX(v) - (size.getWidth() / 2), (int) layout.getY(v) - (size.getHeight() / 2)));
    }
}

Example 5 with Layout

use of org.opennms.features.topology.api.Layout in project opennms by OpenNMS.

the class CircleLayoutAlgorithm method updateLayout.

@Override
public void updateLayout(final Graph graph) {
    final Layout graphLayout = graph.getLayout();
    SparseGraph<VertexRef, Edge> jungGraph = new SparseGraph<VertexRef, Edge>();
    Collection<? extends Vertex> vertices = graph.getDisplayVertices();
    for (VertexRef v : vertices) {
        jungGraph.addVertex(v);
    }
    for (Edge e : graph.getDisplayEdges()) {
        jungGraph.addEdge(e, e.getSource().getVertex(), e.getTarget().getVertex());
    }
    CircleLayout<VertexRef, Edge> layout = new CircleLayout<VertexRef, Edge>(jungGraph);
    layout.setInitializer(initializer(graphLayout));
    layout.setSize(selectLayoutSize(graph));
    for (VertexRef v : vertices) {
        graphLayout.setLocation(v, new Point(layout.getX(v), layout.getY(v)));
    }
}