Examples with Edge org.gephi.graph.api.Edge used on opensource projects

Example 41 with Edge

use of org.gephi.graph.api.Edge in project gephi by gephi.

the class GraphElementsControllerImpl method mergeNodes.

@Override
public Node mergeNodes(Graph graph, Node[] nodes, Node selectedNode, Column[] columns, AttributeRowsMergeStrategy[] mergeStrategies, boolean deleteMergedNodes) {
    Table edgesTable = graph.getModel().getEdgeTable();
    if (selectedNode == null) {
        // Use first node as selected node if null
        selectedNode = nodes[0];
    }
    // Create empty new node:
    Node newNode = createNode("", null, graph);
    // Set properties (position, size and color) using the selected node properties:
    newNode.setX(selectedNode.x());
    newNode.setY(selectedNode.y());
    newNode.setZ(selectedNode.z());
    newNode.setSize(selectedNode.size());
    newNode.setR(selectedNode.r());
    newNode.setG(selectedNode.g());
    newNode.setB(selectedNode.b());
    newNode.setAlpha(selectedNode.alpha());
    // Merge attributes:
    AttributeColumnsController ac = Lookup.getDefault().lookup(AttributeColumnsController.class);
    ac.mergeRowsValues(columns, mergeStrategies, nodes, selectedNode, newNode);
    Set<Node> nodesSet = new HashSet<>();
    nodesSet.addAll(Arrays.asList(nodes));
    // Assign edges to the new node:
    Edge newEdge;
    for (Node node : nodes) {
        for (Edge edge : getNodeEdges(node)) {
            Node newEdgeSource;
            Node newEdgeTarget;
            if (edge.getSource() == node) {
                newEdgeSource = newNode;
                if (nodesSet.contains(edge.getTarget())) {
                    // Self loop because of edge between merged nodes
                    newEdgeTarget = newNode;
                } else {
                    newEdgeTarget = edge.getTarget();
                }
            } else {
                newEdgeTarget = newNode;
                if (nodesSet.contains(edge.getSource())) {
                    // Self loop because of edge between merged nodes
                    newEdgeSource = newNode;
                } else {
                    newEdgeSource = edge.getSource();
                }
            }
            if (graph.getEdge(newEdgeSource, newEdgeTarget) != null) {
                // This edge already exists
                continue;
            }
            newEdge = createEdge(newEdgeSource, newEdgeTarget, edge.isDirected(), edge.getTypeLabel(), graph);
            if (newEdge != null) {
                // Copy edge attributes:
                for (Column column : edgesTable) {
                    if (!column.isReadOnly()) {
                        Object value = edge.getAttribute(column);
                        if (value == null) {
                            newEdge.removeAttribute(column);
                        } else {
                            newEdge.setAttribute(column, edge.getAttribute(column));
                        }
                    }
                }
            }
        }
    }
    // Finally delete merged nodes:
    if (deleteMergedNodes) {
        deleteNodes(nodes);
    }
    return newNode;
}

Example 42 with Edge

use of org.gephi.graph.api.Edge in project gephi by gephi.

the class EdgeLabelRenderer method render.

@Override
public void render(Item item, RenderTarget target, PreviewProperties properties) {
    Edge edge = (Edge) item.getSource();
    // Label
    Color edgeColor = item.getData(EDGE_COLOR);
    Color color = item.getData(EdgeLabelItem.COLOR);
    DependantOriginalColor propColor = properties.getValue(PreviewProperty.EDGE_LABEL_COLOR);
    color = propColor.getColor(edgeColor, color);
    String label = item.getData(EdgeLabelItem.LABEL);
    Float x = item.getData(LABEL_X);
    Float y = item.getData(LABEL_Y);
    // Skip if empty
    if (label == null || label.trim().isEmpty()) {
        return;
    }
    // Outline
    DependantColor outlineDependantColor = properties.getValue(PreviewProperty.EDGE_LABEL_OUTLINE_COLOR);
    Float outlineSize = properties.getFloatValue(PreviewProperty.EDGE_LABEL_OUTLINE_SIZE);
    outlineSize = outlineSize * (font.getSize() / 32f);
    int outlineAlpha = (int) ((properties.getFloatValue(PreviewProperty.EDGE_LABEL_OUTLINE_OPACITY) / 100f) * 255f);
    if (outlineAlpha < 0) {
        outlineAlpha = 0;
    }
    if (outlineAlpha > 255) {
        outlineAlpha = 255;
    }
    Color outlineColor = outlineDependantColor.getColor(edgeColor);
    outlineColor = new Color(outlineColor.getRed(), outlineColor.getGreen(), outlineColor.getBlue(), outlineAlpha);
    if (target instanceof G2DTarget) {
        renderG2D((G2DTarget) target, label, x, y, color, outlineSize, outlineColor);
    } else if (target instanceof SVGTarget) {
        renderSVG((SVGTarget) target, edge, label, x, y, color, outlineSize, outlineColor);
    } else if (target instanceof PDFTarget) {
        renderPDF(((PDFTarget) target), label, x, y, color, outlineSize, outlineColor);
    }
}

Example 43 with Edge

use of org.gephi.graph.api.Edge in project gephi by gephi.

the class ImportNGTest method processMergeWeightsTestGraph.

private Graph processMergeWeightsTestGraph(boolean multipleContainers) {
    if (multipleContainers) {
        importController.process(new Container[] { container, container2, container3 }, mergeProcessor, workspace);
        showReport(container.getReport());
        showReport(container2.getReport());
        showReport(container3.getReport());
        showReport(mergeProcessor.getReport());
        Assert.assertTrue(mergeProcessor.getReport().isEmpty());
    } else {
        importController.process(container, defaultProcessor, workspace);
        showReport(container.getReport());
        showReport(defaultProcessor.getReport());
        Assert.assertTrue(defaultProcessor.getReport().isEmpty());
    }
    Graph graph = graphController.getGraphModel(workspace).getGraph();
    Edge edge21 = graph.getEdge(graph.getNode("2"), graph.getNode("1"));
    Assert.assertNotNull(edge21);
    Assert.assertEquals(edge21.getWeight(), 1.0);
    Edge edge22 = graph.getEdge(graph.getNode("2"), graph.getNode("2"));
    Assert.assertNotNull(edge22);
    Assert.assertEquals(edge22.getWeight(), 1.5);
    return graph;
}

Example 44 with Edge

use of org.gephi.graph.api.Edge in project gephi by gephi.

the class ImportNGTest method checkWeightsAveraged.

private void checkWeightsAveraged(boolean multipleContainers) {
    Graph graph = processMergeWeightsTestGraph(multipleContainers);
    Assert.assertEquals(graph.getNodeCount(), 2);
    Assert.assertEquals(graph.getEdgeCount(), 3);
    Edge edge12 = graph.getEdge(graph.getNode("1"), graph.getNode("2"));
    Assert.assertNotNull(edge12);
    Assert.assertEquals(edge12.getWeight(), 2.0666, EPS);
}

Example 45 with Edge

use of org.gephi.graph.api.Edge in project gephi by gephi.

the class ImportNGTest method checkWeightsMaxKept.

private void checkWeightsMaxKept(boolean multipleContainers) {
    Graph graph = processMergeWeightsTestGraph(multipleContainers);
    Assert.assertEquals(graph.getNodeCount(), 2);
    Assert.assertEquals(graph.getEdgeCount(), 3);
    Edge edge12 = graph.getEdge(graph.getNode("1"), graph.getNode("2"));
    Assert.assertNotNull(edge12);
    Assert.assertEquals(edge12.getWeight(), 4.2);
}