final double getMindist(Point2D.Double pt) {
double result = Double.MAX_VALUE;
for (Point2D p : points.keySet()) {
if (pt.equals(p)) {
continue;
}
final double v = p.distance(pt);
if (v < 1E-4) {
throw new IllegalStateException();
}
result = Math.min(result, v);
}
for (Line2D line : lines) {
if (line.getP1().equals(pt) || line.getP2().equals(pt)) {
continue;
}
final double v = line.ptSegDist(pt);
if (result < 1E-4) {
throw new IllegalStateException("pt=" + pt + " line=" + GeomUtils.toString(line));
}
result = Math.min(result, v);
}
if (result == 0) {
throw new IllegalStateException();
}
// Log.println("getMindist=" + result);
return result;
}
@Override
public void mouseMoved(MouseEvent e) {
Point p = e.getPoint();
if (line.ptSegDist(p) <= 1.0) {
tipLabel.setText(tooltip);
}
parent.repaint();
}
public boolean nearby(Node n, double dist) {
if (w == null) {
Main.debug("way null");
return false;
}
if (w.containsNode(n)) return false;
if (n.isKeyTrue("noexit")) return false;
EastNorth coord = n.getEastNorth();
if (coord == null) return false;
Point2D p = new Point2D.Double(coord.east(), coord.north());
if (line.getP1().distance(p) > len + dist) return false;
if (line.getP2().distance(p) > len + dist) return false;
return line.ptSegDist(p) < dist;
}
private Edge getSelectedEdge(MouseEvent mouse) {
for (int i = 0; i < listOfNodes.size(); i++) {
Node node = listOfNodes.get(i);
for (Edge edge : node.adjacent) {
Line2D line = edge.getRepLine();
double ptToLine = line.ptSegDist(mouse.getX(), mouse.getY());
if (ptToLine <= Constants.eps) {
return edge;
}
}
}
return null;
}
/**
* Search the intersection point between the border of a rectangle and the line defined by first
* and next point. The rectangle is decomposed in for lines and each line go to infinite. So all
* lines intersect an edge of the rectangle. We must compute if segments intersect each others or
* not.
*
* @param bounds the rectangle
* @param first the first point
* @param next the next point
* @return the intersection point; or null if no points found
*/
public static Point searchNearestEgde(Rectangle bounds, Point first, Point next) {
// One offset needed to avoid intersection with the wrong line.
if (bounds.x + bounds.width < first.x) first.x = bounds.x + bounds.width - 1;
else if (bounds.x > first.x) first.x = bounds.x + 1;
if (bounds.y + bounds.height < first.y) first.y = bounds.height + bounds.y - 1;
else if (bounds.y > first.y) first.y = bounds.y + 1;
final Line2D relationLine = new Line2D.Float(first.x, first.y, next.x, next.y);
final Line2D lineTop = new Line2D.Float(bounds.x, bounds.y, bounds.x + bounds.width, bounds.y);
final Line2D lineRight =
new Line2D.Float(
bounds.x + bounds.width, bounds.y, bounds.x + bounds.width, bounds.y + bounds.height);
final Line2D lineBottom =
new Line2D.Float(
bounds.x + bounds.width, bounds.y + bounds.height, bounds.x, bounds.y + bounds.height);
final Line2D lineLeft =
new Line2D.Float(bounds.x, bounds.y + bounds.height, bounds.x, bounds.y);
final Point2D ptIntersectTop = ptIntersectsLines(relationLine, lineTop);
final Point2D ptIntersectRight = ptIntersectsLines(relationLine, lineRight);
final Point2D ptIntersectBottom = ptIntersectsLines(relationLine, lineBottom);
final Point2D ptIntersectLeft = ptIntersectsLines(relationLine, lineLeft);
// line is to infinite, we must verify that the point find interst the
// correct edge and the relation.
final int distTop =
(int) lineTop.ptSegDist(ptIntersectTop) + (int) relationLine.ptSegDist(ptIntersectTop);
final int distRight =
(int) lineRight.ptSegDist(ptIntersectRight)
+ (int) relationLine.ptSegDist(ptIntersectRight);
final int distBottom =
(int) lineBottom.ptSegDist(ptIntersectBottom)
+ (int) relationLine.ptSegDist(ptIntersectBottom);
final int distLeft =
(int) lineLeft.ptSegDist(ptIntersectLeft) + (int) relationLine.ptSegDist(ptIntersectLeft);
if (ptIntersectTop != null && distTop == 0)
return new Point((int) ptIntersectTop.getX(), (int) ptIntersectTop.getY());
else if (ptIntersectRight != null && distRight == 0)
return new Point((int) ptIntersectRight.getX(), (int) ptIntersectRight.getY());
else if (ptIntersectBottom != null && distBottom == 0)
return new Point((int) ptIntersectBottom.getX(), (int) ptIntersectBottom.getY());
else if (ptIntersectLeft != null && distLeft == 0)
return new Point((int) ptIntersectLeft.getX(), (int) ptIntersectLeft.getY());
else return null; // no point found!
}
/** Accuracy Test of the <code>contains(int, int)</code> method. */
public void testContains() {
// check the edge contains the point or not.
assertTrue("The edge should contain this point.", test.contains(2, 3));
// check the edge contains the point or not.
assertTrue("The edge should contain this point.", test.contains(15, 7));
// check the edge contains the point or not.
assertTrue("The edge should contain this point.", test.contains(33, 0));
double number = Line2D.ptSegDist(0, 0, 10, 10, -3, 0);
System.out.println("number" + number);
// set the active width.
test.setActiveWidth(1);
// check the edge contains the point or not.
assertFalse("The edge should not contain this point.", test.contains(15, 7));
}
public boolean contact(GraphSettings gInfo, Graph g, Point p, int bottom) {
// snap to year
int yearWidth = gInfo.getYearWidth();
int firstYearIdx = (p.x / yearWidth) - 1;
int nYears = 3;
// Check three years' worth of data: the year prior to and after the year the mouse is inside
Year startYear = gInfo.getDrawBounds().getStart().add(firstYearIdx);
List<Point2D> points = this.getPointsFrom(gInfo, g, startYear, nYears, bottom);
int nLines = points.size() - 1;
for (int i = 0; i < nLines; i++) {
Line2D line = new Line2D.Float(points.get(i), points.get(i + 1));
int distance = Math.round((float) line.ptSegDist(p));
if (distance <= NEAR) return true;
}
return false;
}
/**
* This utility function makes it easy to check whether the coordinates of the user's mouse click
* (px,py) are on (or very close to) the line between the two points, (x1,y1) and (x2,y2).
*
* @param px x coordinate of mouse click
* @param py y coordinate of mouse click
* @param x1 x point of the first coordinate of object to check for mouse click proximity
* @param y1 y point of the first coordinate of object to check for mouse click proximity
* @param x2 x point of the second coordinate of object to check for mouse click proximity
* @param y2 y point of the second coordinate of object to check for mouse click proximity
* @return true if the point where the user clicked is on or close to the line between the two
* points,(x1,y1) and (x2,y2)
*/
public static boolean clickHitLine(int px, int py, int x1, int y1, int x2, int y2) {
return Line2D.ptSegDist(x1, y1, x2, y2, px, py) < SELECTION_DISTANCE;
}