@Override
protected synchronized void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
// get the display data
NodeCoordinates displayData = null;
if (DisplayDataType.COORD_DISPLAY.equals(problem.getDisplayDataType())) {
displayData = (NodeCoordinates) problem.getDistanceTable();
} else {
displayData = problem.getDisplayData();
}
// first determine bounds of the data
boolean isGeographical = EdgeWeightType.GEO.equals(problem.getEdgeWeightType());
double left = Double.POSITIVE_INFINITY;
double right = Double.NEGATIVE_INFINITY;
double bottom = Double.POSITIVE_INFINITY;
double top = Double.NEGATIVE_INFINITY;
for (int i = 1; i <= displayData.size(); i++) {
Node node = displayData.get(i);
double[] position = toDisplayCoordinates(node, isGeographical);
left = Math.min(left, position[0]);
right = Math.max(right, position[0]);
bottom = Math.min(bottom, position[1]);
top = Math.max(top, position[1]);
}
// calculate the bounds of the drawing
int displayWidth = getWidth();
int displayHeight = getHeight();
double scaleX = (displayWidth - insets.right - insets.left) / (right - left);
double scaleY = (displayHeight - insets.top - insets.bottom) / (top - bottom);
double scale = Math.min(scaleX, scaleY);
double offsetX = (displayWidth - insets.right - insets.left - scale * (right - left)) / 2.0;
double offsetY = (displayHeight - insets.top - insets.bottom - scale * (top - bottom)) / 2.0;
// draw the tours
for (Entry<Tour, TourDisplaySetting> entry : tours.entrySet()) {
Tour tour = entry.getKey();
TourDisplaySetting displaySettings = entry.getValue();
g2.setPaint(displaySettings.getPaint());
g2.setStroke(displaySettings.getStroke());
for (int i = 0; i < tour.size(); i++) {
Node node1 = displayData.get(tour.get(i));
Node node2 = displayData.get(tour.get(i + 1));
double[] position1 = toDisplayCoordinates(node1, isGeographical);
double[] position2 = toDisplayCoordinates(node2, isGeographical);
Line2D line =
new Line2D.Double(
displayWidth - (offsetX + scale * (position1[0] - left) + insets.left),
displayHeight - (offsetY + scale * (position1[1] - bottom) + insets.bottom),
displayWidth - (offsetX + scale * (position2[0] - left) + insets.left),
displayHeight - (offsetY + scale * (position2[1] - bottom) + insets.bottom));
g2.draw(line);
}
}
// draw the nodes
g2.setColor(getForeground());
for (int i = 1; i <= displayData.size(); i++) {
Node node = displayData.get(i);
double[] position = toDisplayCoordinates(node, isGeographical);
Ellipse2D point =
new Ellipse2D.Double(
displayWidth
- (offsetX + scale * (position[0] - left) + insets.left)
- (nodeWidth / 2.0),
displayHeight
- (offsetY + scale * (position[1] - bottom) + insets.bottom)
- (nodeWidth / 2.0),
nodeWidth,
nodeWidth);
g2.fill(point);
g2.draw(point);
}
}
