/**
* Like {@link #nodePosition(Graph,String,Point3)} but use an existing node as argument.
*
* @param node The node to consider.
* @param pos A point that will receive the node position.
*/
public static void nodePosition(Node node, Point3 pos) {
if (node.hasAttribute("xyz") || node.hasAttribute("xy")) {
Object o = node.getAttribute("xyz");
if (o == null) o = node.getAttribute("xy");
if (o != null) {
positionFromObject(o, pos);
}
} else if (node.hasAttribute("x")) {
pos.x = (double) node.getNumber("x");
if (node.hasAttribute("y")) pos.y = (double) node.getNumber("y");
if (node.hasAttribute("z")) pos.z = (double) node.getNumber("z");
}
// if (node.hasAttribute("xyz") || node.hasAttribute("xy")) {
// Object o = node.getAttribute("xyz");
//
// if (o == null)
// o = node.getAttribute("xy");
//
// if (o != null && o instanceof Object[]) {
// Object oo[] = (Object[]) o;
//
// if (oo.length > 0 && oo[0] instanceof Number) {
// pos.x = ((Number) oo[0]).doubleValue();
//
// if (oo.length > 1)
// pos.y = ((Number) oo[1]).doubleValue();
// if (oo.length > 2)
// pos.z = ((Number) oo[2]).doubleValue();
// }
// }
// } else if (node.hasAttribute("x")) {
// pos.x = (double) node.getNumber("x");
//
// if (node.hasAttribute("y"))
// pos.y = (double) node.getNumber("y");
//
// if (node.hasAttribute("z"))
// pos.z = (double) node.getNumber("z");
// }
}
/**
* Compute a transformation matrix that pass from graph units (user space) to pixel units (device
* space) so that the whole graph is visible.
*
* @param g2 The Swing graphics.
*/
protected void autoFitView(Graphics2D g2) {
double sx, sy;
double tx, ty;
double padXgu = getPaddingXgu() * 2;
double padYgu = getPaddingYgu() * 2;
double padXpx = getPaddingXpx() * 2;
double padYpx = getPaddingYpx() * 2;
sx = (metrics.viewport[2] - padXpx) / (metrics.size.data[0] + padXgu); // Ratio
// along
// X
sy = (metrics.viewport[3] - padYpx) / (metrics.size.data[1] + padYgu); // Ratio
// along
// Y
tx = metrics.lo.x + (metrics.size.data[0] / 2); // Centre of graph in X
ty = metrics.lo.y + (metrics.size.data[1] / 2); // Centre of graph in Y
if (sx <= 0) {
sx =
(metrics.viewport[2] - Math.min(metrics.viewport[2] - 1, padXpx))
/ (metrics.size.data[0] + padXgu);
}
if (sy <= 0) {
sy =
(metrics.viewport[3] - Math.min(metrics.viewport[3] - 1, padYpx))
/ (metrics.size.data[1] + padYgu);
}
if (sx > sy) // The least ratio.
sx = sy;
else sy = sx;
g2.translate(metrics.viewport[2] / 2, metrics.viewport[3] / 2);
if (rotation != 0) g2.rotate(rotation / (180 / Math.PI));
g2.scale(sx, -sy);
g2.translate(-tx, -ty);
Tx = g2.getTransform();
xT = new AffineTransform(Tx);
try {
xT.invert();
} catch (NoninvertibleTransformException e) {
logger.warning("Cannot inverse gu2px matrix.");
}
zoom = 1;
center.set(tx, ty, 0);
metrics.setRatioPx2Gu(sx);
metrics.loVisible.copy(metrics.lo);
metrics.hiVisible.copy(metrics.hi);
}
/**
* Enable or disable automatic adjustment of the view to see the entire graph.
*
* @param on If true, automatic adjustment is enabled.
*/
public void setAutoFitView(boolean on) {
if (autoFit && (!on)) {
// We go from autoFit to user view, ensure the current centre is at
// the
// middle of the graph, and the zoom is at one.
zoom = 1;
center.set(
metrics.lo.x + (metrics.size.data[0] / 2), metrics.lo.y + (metrics.size.data[1] / 2), 0);
}
autoFit = on;
}
/**
* Try to convert an object to a position. The object can be an array of numbers, an array of base
* numeric types or their object counterparts.
*
* @param o The object to try to convert.
* @param pos The result.
*/
public static void positionFromObject(Object o, Point3 pos) {
if (o instanceof Object[]) {
Object oo[] = (Object[]) o;
if (oo.length > 0 && oo[0] instanceof Number) {
pos.x = ((Number) oo[0]).doubleValue();
if (oo.length > 1) pos.y = ((Number) oo[1]).doubleValue();
if (oo.length > 2) pos.z = ((Number) oo[2]).doubleValue();
}
} else if (o instanceof Double[]) {
Double oo[] = (Double[]) o;
if (oo.length > 0) pos.x = oo[0];
if (oo.length > 1) pos.y = oo[1];
if (oo.length > 2) pos.z = oo[2];
} else if (o instanceof Float[]) {
Float oo[] = (Float[]) o;
if (oo.length > 0) pos.x = oo[0];
if (oo.length > 1) pos.y = oo[1];
if (oo.length > 2) pos.z = oo[2];
} else if (o instanceof Integer[]) {
Integer oo[] = (Integer[]) o;
if (oo.length > 0) pos.x = oo[0];
if (oo.length > 1) pos.y = oo[1];
if (oo.length > 2) pos.z = oo[2];
} else if (o instanceof double[]) {
double oo[] = (double[]) o;
if (oo.length > 0) pos.x = oo[0];
if (oo.length > 1) pos.y = oo[1];
if (oo.length > 2) pos.z = oo[2];
} else if (o instanceof float[]) {
float oo[] = (float[]) o;
if (oo.length > 0) pos.x = oo[0];
if (oo.length > 1) pos.y = oo[1];
if (oo.length > 2) pos.z = oo[2];
} else if (o instanceof int[]) {
int oo[] = (int[]) o;
if (oo.length > 0) pos.x = oo[0];
if (oo.length > 1) pos.y = oo[1];
if (oo.length > 2) pos.z = oo[2];
} else if (o instanceof Number[]) {
Number oo[] = (Number[]) o;
if (oo.length > 0) pos.x = oo[0].doubleValue();
if (oo.length > 1) pos.y = oo[1].doubleValue();
if (oo.length > 2) pos.z = oo[2].doubleValue();
} else if (o instanceof Point3) {
Point3 oo = (Point3) o;
pos.x = oo.x;
pos.y = oo.y;
pos.z = oo.z;
} else if (o instanceof Vector3) {
Vector3 oo = (Vector3) o;
pos.x = oo.data[0];
pos.y = oo.data[1];
pos.z = oo.data[2];
} else if (o instanceof Point2) {
Point2 oo = (Point2) o;
pos.x = oo.x;
pos.y = oo.y;
pos.z = 0;
} else if (o instanceof Vector2) {
Vector2 oo = (Vector2) o;
pos.x = oo.data[0];
pos.y = oo.data[1];
pos.z = 0;
} else {
System.err.printf("Do not know how to handle xyz attribute %s%n", o.getClass().getName());
}
}
/*
* (non-Javadoc)
*
* @see org.graphstream.ui.swingViewer.util.Camera#setViewCenter(double,
* double, double)
*/
public void setViewCenter(double x, double y, double z) {
setAutoFitView(false);
center.set(x, y, z);
graph.graphChanged = true;
}