Examples with NodeItem org.gephi.preview.plugin.items.NodeItem used on opensource projects

Example 1 with NodeItem

use of org.gephi.preview.plugin.items.NodeItem in project gephi by gephi.

the class NodeBuilder method getItems.

@Override
public Item[] getItems(Graph graph) {
    Item[] items = new NodeItem[graph.getNodeCount()];
    int i = 0;
    for (Node n : graph.getNodes()) {
        NodeItem nodeItem = new NodeItem(n);
        nodeItem.setData(NodeItem.X, n.x());
        nodeItem.setData(NodeItem.Y, -n.y());
        nodeItem.setData(NodeItem.Z, n.z());
        nodeItem.setData(NodeItem.SIZE, n.size() * 2f);
        nodeItem.setData(NodeItem.COLOR, n.getColor());
        items[i++] = nodeItem;
    }
    return items;
}

Example 2 with NodeItem

use of org.gephi.preview.plugin.items.NodeItem in project gephi by gephi.

the class EdgeLabelRenderer method preProcess.

@Override
public void preProcess(PreviewModel previewModel) {
    PreviewProperties properties = previewModel.getProperties();
    if (properties.getBooleanValue(PreviewProperty.EDGE_LABEL_SHORTEN)) {
        //Shorten labels
        Item[] EdgeLabelsItems = previewModel.getItems(Item.EDGE_LABEL);
        int maxChars = properties.getIntValue(PreviewProperty.EDGE_LABEL_MAX_CHAR);
        for (Item item : EdgeLabelsItems) {
            String label = item.getData(EdgeLabelItem.LABEL);
            if (label.length() >= maxChars + 3) {
                label = label.substring(0, maxChars) + "...";
                item.setData(EdgeLabelItem.LABEL, label);
            }
        }
    }
    //Put parent color, and calculate position
    for (Item item : previewModel.getItems(Item.EDGE_LABEL)) {
        Edge edge = (Edge) item.getSource();
        Item edgeItem = previewModel.getItem(Item.EDGE, edge);
        EdgeColor edgeColor = (EdgeColor) properties.getValue(PreviewProperty.EDGE_COLOR);
        NodeItem sourceItem = (NodeItem) edgeItem.getData(EdgeRenderer.SOURCE);
        NodeItem targetItem = (NodeItem) edgeItem.getData(EdgeRenderer.TARGET);
        Color color = edgeColor.getColor((Color) item.getData(EdgeItem.COLOR), (Color) sourceItem.getData(NodeItem.COLOR), (Color) targetItem.getData(NodeItem.COLOR));
        item.setData(EDGE_COLOR, color);
        if (edge.isSelfLoop()) {
            //Middle
            Float x = sourceItem.getData(NodeItem.X);
            Float y = sourceItem.getData(NodeItem.Y);
            Float size = sourceItem.getData(NodeItem.SIZE);
            Vector v1 = new Vector(x, y);
            v1.add(size, -size);
            Vector v2 = new Vector(x, y);
            v2.add(size, size);
            Vector middle = bezierPoint(x, y, v1.x, v1.y, v2.x, v2.y, x, y, 0.5f);
            item.setData(LABEL_X, middle.x);
            item.setData(LABEL_Y, middle.y);
        } else if (properties.getBooleanValue(PreviewProperty.EDGE_CURVED)) {
            //Middle of the curve
            Float x1 = sourceItem.getData(NodeItem.X);
            Float x2 = targetItem.getData(NodeItem.X);
            Float y1 = sourceItem.getData(NodeItem.Y);
            Float y2 = targetItem.getData(NodeItem.Y);
            //Curved edgs
            Vector direction = new Vector(x2, y2);
            direction.sub(new Vector(x1, y1));
            float length = direction.mag();
            direction.normalize();
            float factor = properties.getFloatValue(EdgeRenderer.BEZIER_CURVENESS) * length;
            // normal vector to the edge
            Vector n = new Vector(direction.y, -direction.x);
            n.mult(factor);
            // first control point
            Vector v1 = new Vector(direction.x, direction.y);
            v1.mult(factor);
            v1.add(new Vector(x1, y1));
            v1.add(n);
            // second control point
            Vector v2 = new Vector(direction.x, direction.y);
            v2.mult(-factor);
            v2.add(new Vector(x2, y2));
            v2.add(n);
            Vector middle = bezierPoint(x1, y1, v1.x, v1.y, v2.x, v2.y, x2, y2, 0.5f);
            item.setData(LABEL_X, middle.x);
            item.setData(LABEL_Y, middle.y);
        } else {
            Float x = ((Float) sourceItem.getData(NodeItem.X) + (Float) targetItem.getData(NodeItem.X)) / 2f;
            Float y = ((Float) sourceItem.getData(NodeItem.Y) + (Float) targetItem.getData(NodeItem.Y)) / 2f;
            item.setData(LABEL_X, x);
            item.setData(LABEL_Y, y);
        }
    }
    //Property font
    font = properties.getFontValue(PreviewProperty.EDGE_LABEL_FONT);
}

Example 3 with NodeItem

use of org.gephi.preview.plugin.items.NodeItem in project gephi by gephi.

the class NodeLabelRenderer method preProcess.

@Override
public void preProcess(PreviewModel previewModel) {
    PreviewProperties properties = previewModel.getProperties();
    if (properties.getBooleanValue(PreviewProperty.NODE_LABEL_SHORTEN)) {
        //Shorten labels
        Item[] nodeLabelsItems = previewModel.getItems(Item.NODE_LABEL);
        int maxChars = properties.getIntValue(PreviewProperty.NODE_LABEL_MAX_CHAR);
        for (Item item : nodeLabelsItems) {
            String label = item.getData(NodeLabelItem.LABEL);
            if (label.length() >= maxChars + 3) {
                label = label.substring(0, maxChars) + "...";
                item.setData(NodeLabelItem.LABEL, label);
            }
        }
    }
    //Put parent color, size and position
    for (Item item : previewModel.getItems(Item.NODE_LABEL)) {
        Node node = (Node) item.getSource();
        Item nodeItem = previewModel.getItem(Item.NODE, node);
        item.setData(NODE_COLOR, nodeItem.getData(NodeItem.COLOR));
        item.setData(NODE_SIZE, nodeItem.getData(NodeItem.SIZE));
        item.setData(NODE_X, nodeItem.getData(NodeItem.X));
        item.setData(NODE_Y, nodeItem.getData(NodeItem.Y));
    }
    //Calculate font size and cache fonts
    fontCache = new HashMap<>();
    Font font = properties.getFontValue(PreviewProperty.NODE_LABEL_FONT);
    for (Item item : previewModel.getItems(Item.NODE_LABEL)) {
        Float nodeSize = item.getData(NODE_SIZE);
        Float fontSize = 1f;
        if (item.getData(NodeLabelItem.SIZE) != null) {
            fontSize = item.getData(NodeLabelItem.SIZE);
        }
        if (properties.getBooleanValue(PreviewProperty.NODE_LABEL_PROPORTIONAL_SIZE)) {
            fontSize *= nodeSize / 10f;
        }
        fontSize *= font.getSize();
        Font labelFont = font.deriveFont((float) fontSize);
        fontCache.put(labelFont.getSize(), labelFont);
        item.setData(FONT_SIZE, labelFont.getSize());
    }
}