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This charting library ${project.artifactId}- is an extension
in the spirit of Oracle's XYChart and performance/time-proven JDataViewer charting functionalities.
Emphasis was put on plotting performance for both large number of data points and real-time displays,
as well as scientific accuracies leading to error bar/surface plots, and other scientific plotting
features (parameter measurements, fitting, multiple axes, zoom, ...).
package de.gsi.chart.renderer.spi.hexagon;
import java.util.Collection;
import javafx.scene.Group;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.input.MouseEvent;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
public class GridDrawer {
private final HexagonMap map;
private javafx.scene.text.Font font = new Font(13);
/**
* @param map the global hex map
*/
GridDrawer(final HexagonMap map) {
this.map = map;
}
void draw(final Group root) {
final Collection hexagons = map.getAllHexagons();
for (final Hexagon hexagon : hexagons) {
hexagon.addEventFilter(MouseEvent.MOUSE_CLICKED, me -> {
final GridPosition pos = ((Hexagon) me.getSource()).position;
for (final HexagonCallback callBack : map.onHexClickedCallback) {
if (callBack == null) {
continue;
}
final Hexagon hex = map.getHexagon(pos);
if (hex != null) {
callBack.handle(hex);
}
}
});
hexagon.addEventFilter(MouseEvent.MOUSE_ENTERED, me -> {
final GridPosition pos = ((Hexagon) me.getSource()).position;
for (final HexagonCallback callBack : map.onHexEnteredCallback) {
if (callBack == null) {
continue;
}
final Hexagon hex = map.getHexagon(pos);
if (hex != null) {
callBack.handle(hex);
}
}
});
hexagon.addEventFilter(MouseEvent.MOUSE_EXITED, me -> {
final GridPosition pos = ((Hexagon) me.getSource()).position;
for (final HexagonCallback callBack : map.onHexExitCallback) {
if (callBack == null) {
continue;
}
final Hexagon hex = map.getHexagon(pos);
if (hex != null) {
callBack.handle(hex);
}
}
});
root.getChildren().add(hexagon);
if (map.renderCoordinates) {
final Text text = new Text(hexagon.position.getCoordinates());
text.setFont(font);
final double textWidth = text.getBoundsInLocal().getWidth();
final double textHeight = text.getBoundsInLocal().getHeight();
text.setX(hexagon.getGraphicsXoffset() - textWidth / 2);
text.setY(hexagon.getGraphicsYoffset() + textHeight / 4); // Not
// sure
// why,
// but
// 4
// seems
// like
// a
// good
// value
root.getChildren().add(text);
}
}
}
void draw(final Canvas canvas) {
//registerCanvasMouseLiner(canvas); // TODO move elsewhere
final GraphicsContext gc = canvas.getGraphicsContext2D();
gc.clearRect(0, 0, gc.getCanvas().getWidth(), gc.getCanvas().getHeight());
for (final Hexagon hexagon : map.getAllHexagons()) {
// draw hexagon according to Node specifications
hexagon.draw(gc);
if (map.renderCoordinates) {
hexagon.renderCoordinates(gc);
}
}
}
void drawContour(final Canvas canvas) {
//registerCanvasMouseLiner(canvas); // TODO move elsewhere
final GraphicsContext gc = canvas.getGraphicsContext2D();
gc.clearRect(0, 0, gc.getCanvas().getWidth(), gc.getCanvas().getHeight());
for (final Hexagon hexagon : map.getAllHexagons()) {
// draw hexagon contour according to Node specifications
hexagon.drawContour(gc);
if (map.renderCoordinates) {
hexagon.renderCoordinates(gc);
}
}
}
/**
* @param x pixel coordinate
* @param y pixel coordinate
* @param hexagonHeight size of hexagons
* @param xPadding x-padding between tiles
* @param yPadding y-padding between tiles
* @return the GridPosition that contains that pixel
*/
public static GridPosition pixelToPosition(int x, int y, final int hexagonHeight, final int xPadding,
final int yPadding) {
x = x - xPadding;
y = y - yPadding;
final double hexagonRadius = (double) hexagonHeight / 2;
final double q = (1.0 / 3.0 * Math.sqrt(3.0) * x - 1.0 / 3.0 * y) / hexagonRadius;
final double r = 2.0 / 3.0 * y / hexagonRadius;
return GridPosition.hexRound(q, r);
}
void setFont(final Font font) {
this.font = font;
}
}