public void updateLine() {
PBounds sourceBounds = source.getBounds();
PBounds targetBounds = target.getBounds();
double x1, y1, x2, y2;
if (Math.abs(sourceBounds.getCenterX() - targetBounds.getCenterX()) < 1.0) {
// source and target on the same vertical position
x1 = x2 = sourceBounds.getCenterX();
y1 = sourceBounds.getMaxY();
y2 = targetBounds.getMinY();
y2 -= STROKE_ARROW.getLineWidth();
if (y1 > y2) {
y1 = sourceBounds.getMinY();
y2 = targetBounds.getMaxY();
y2 += STROKE_ARROW.getLineWidth();
}
} else {
// source and target in different vertical positions
x1 = sourceBounds.getMaxX();
y1 = sourceBounds.getCenterY();
x2 = targetBounds.getMinX();
y2 = targetBounds.getCenterY();
x2 -= STROKE_ARROW.getLineWidth();
if (x1 > x2) {
x1 = sourceBounds.getMinX();
x2 = targetBounds.getMaxX();
x2 += STROKE_ARROW.getLineWidth();
}
// move the ends a bit if we are not in the same vertical position
int ydi = (int) Math.round((y2 - y1) / (MmfNode.HEIGHT + MmfNode.PADDING_HEIGHT));
double yd = (ydi < 0 ? -1 : 1) * END_DELTA[Math.min(Math.abs(ydi), END_DELTA.length - 1)];
y1 += yd;
y2 -= yd;
}
line = new Line2D.Double(x1, y1, x2, y2);
arrowHead = getArrowHead((int) x1, (int) y1, (int) x2, (int) y2);
Rectangle bounds = line.getBounds();
bounds.add(arrowHead.getBounds());
setBounds(bounds);
}
@Override
public Rectangle getBounds() {
return MainLine.getBounds();
}
/**
* Draws the block representing the specified item.
*
* @param g2 the graphics device.
* @param state the state.
* @param dataArea the data area.
* @param info the plot rendering info.
* @param plot the plot.
* @param domainAxis the x-axis.
* @param rangeAxis the y-axis.
* @param dataset the dataset.
* @param series the series index.
* @param item the item index.
* @param crosshairState the crosshair state.
* @param pass the pass index.
*/
@Override
public void drawItem(
Graphics2D g2,
XYItemRendererState state,
Rectangle2D dataArea,
PlotRenderingInfo info,
XYPlot plot,
ValueAxis domainAxis,
ValueAxis rangeAxis,
XYDataset dataset,
int series,
int item,
CrosshairState crosshairState,
int pass) {
double x = dataset.getXValue(series, item);
double y = dataset.getYValue(series, item);
double dx = 0.0;
double dy = 0.0;
if (dataset instanceof VectorXYDataset) {
dx = ((VectorXYDataset) dataset).getVectorXValue(series, item);
dy = ((VectorXYDataset) dataset).getVectorYValue(series, item);
}
double xx0 = domainAxis.valueToJava2D(x, dataArea, plot.getDomainAxisEdge());
double yy0 = rangeAxis.valueToJava2D(y, dataArea, plot.getRangeAxisEdge());
double xx1 = domainAxis.valueToJava2D(x + dx, dataArea, plot.getDomainAxisEdge());
double yy1 = rangeAxis.valueToJava2D(y + dy, dataArea, plot.getRangeAxisEdge());
Line2D line;
PlotOrientation orientation = plot.getOrientation();
if (orientation.equals(PlotOrientation.HORIZONTAL)) {
line = new Line2D.Double(yy0, xx0, yy1, xx1);
} else {
line = new Line2D.Double(xx0, yy0, xx1, yy1);
}
g2.setPaint(getItemPaint(series, item));
g2.setStroke(getItemStroke(series, item));
g2.draw(line);
// calculate the arrow head and draw it...
double dxx = (xx1 - xx0);
double dyy = (yy1 - yy0);
double bx = xx0 + (1.0 - this.baseLength) * dxx;
double by = yy0 + (1.0 - this.baseLength) * dyy;
double cx = xx0 + (1.0 - this.headLength) * dxx;
double cy = yy0 + (1.0 - this.headLength) * dyy;
double angle = 0.0;
if (dxx != 0.0) {
angle = Math.PI / 2.0 - Math.atan(dyy / dxx);
}
double deltaX = 2.0 * Math.cos(angle);
double deltaY = 2.0 * Math.sin(angle);
double leftx = cx + deltaX;
double lefty = cy - deltaY;
double rightx = cx - deltaX;
double righty = cy + deltaY;
GeneralPath p = new GeneralPath();
if (orientation == PlotOrientation.VERTICAL) {
p.moveTo((float) xx1, (float) yy1);
p.lineTo((float) rightx, (float) righty);
p.lineTo((float) bx, (float) by);
p.lineTo((float) leftx, (float) lefty);
} else { // orientation is HORIZONTAL
p.moveTo((float) yy1, (float) xx1);
p.lineTo((float) righty, (float) rightx);
p.lineTo((float) by, (float) bx);
p.lineTo((float) lefty, (float) leftx);
}
p.closePath();
g2.draw(p);
// setup for collecting optional entity info...
EntityCollection entities = null;
if (info != null) {
entities = info.getOwner().getEntityCollection();
if (entities != null) {
addEntity(entities, line.getBounds(), dataset, series, item, 0.0, 0.0);
}
}
}
/**
* Draws the visual representation of a single data item.
*
* @param g2 the graphics device.
* @param state the renderer state.
* @param dataArea the area within which the plot is being drawn.
* @param info collects information about the drawing.
* @param plot the plot (can be used to obtain standard color information etc).
* @param domainAxis the domain axis.
* @param rangeAxis the range axis.
* @param dataset the dataset.
* @param series the series index (zero-based).
* @param item the item index (zero-based).
* @param crosshairState crosshair information for the plot (<code>null</code> permitted).
* @param pass the pass index (ignored here).
*/
public void drawItem(
Graphics2D g2,
XYItemRendererState state,
Rectangle2D dataArea,
PlotRenderingInfo info,
XYPlot plot,
ValueAxis domainAxis,
ValueAxis rangeAxis,
XYDataset dataset,
int series,
int item,
CrosshairState crosshairState,
int pass) {
// setup for collecting optional entity info...
EntityCollection entities = null;
if (info != null) {
entities = info.getOwner().getEntityCollection();
}
IntervalXYDataset intervalDataset = (IntervalXYDataset) dataset;
double x = intervalDataset.getXValue(series, item);
double yLow = intervalDataset.getStartYValue(series, item);
double yHigh = intervalDataset.getEndYValue(series, item);
RectangleEdge xAxisLocation = plot.getDomainAxisEdge();
RectangleEdge yAxisLocation = plot.getRangeAxisEdge();
double xx = domainAxis.valueToJava2D(x, dataArea, xAxisLocation);
double yyLow = rangeAxis.valueToJava2D(yLow, dataArea, yAxisLocation);
double yyHigh = rangeAxis.valueToJava2D(yHigh, dataArea, yAxisLocation);
Paint p = getItemPaint(series, item);
Stroke s = getItemStroke(series, item);
Line2D line = null;
Shape shape = getItemShape(series, item);
Shape top = null;
Shape bottom = null;
PlotOrientation orientation = plot.getOrientation();
if (orientation == PlotOrientation.HORIZONTAL) {
line = new Line2D.Double(yyLow, xx, yyHigh, xx);
top = ShapeUtilities.createTranslatedShape(shape, yyHigh, xx);
bottom = ShapeUtilities.createTranslatedShape(shape, yyLow, xx);
} else if (orientation == PlotOrientation.VERTICAL) {
line = new Line2D.Double(xx, yyLow, xx, yyHigh);
top = ShapeUtilities.createTranslatedShape(shape, xx, yyHigh);
bottom = ShapeUtilities.createTranslatedShape(shape, xx, yyLow);
}
g2.setPaint(p);
g2.setStroke(s);
g2.draw(line);
g2.fill(top);
g2.fill(bottom);
// for item labels, we have a special case because there is the
// possibility to draw (a) the regular item label near to just the
// upper y-value, or (b) the regular item label near the upper y-value
// PLUS an additional item label near the lower y-value.
if (isItemLabelVisible(series, item)) {
drawItemLabel(g2, orientation, dataset, series, item, xx, yyHigh, false);
drawAdditionalItemLabel(g2, orientation, dataset, series, item, xx, yyLow);
}
// add an entity for the item...
if (entities != null) {
addEntity(entities, line.getBounds(), dataset, series, item, 0.0, 0.0);
}
}
public GRectangle getBounds() {
return new org.geogebra.desktop.awt.GRectangleD(impl.getBounds());
}
