/**
* Draws the item (first pass). This method draws the lines connecting the items.
*
* @param g2 the graphics device.
* @param state the renderer state.
* @param dataArea the area within which the data is being drawn.
* @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 pass the pass.
* @param series the series index (zero-based).
* @param item the item index (zero-based).
*/
protected void drawPrimaryLine(
XYItemRendererState state,
Graphics2D g2,
XYPlot plot,
XYDataset dataset,
int pass,
int series,
int item,
ValueAxis domainAxis,
ValueAxis rangeAxis,
Rectangle2D dataArea) {
if (item == 0) {
return;
}
// get the data point...
double x1 = dataset.getXValue(series, item);
double y1 = dataset.getYValue(series, item);
if (Double.isNaN(y1) || Double.isNaN(x1)) {
return;
}
double x0 = dataset.getXValue(series, item - 1);
double y0 = dataset.getYValue(series, item - 1);
if (Double.isNaN(y0) || Double.isNaN(x0)) {
return;
}
RectangleEdge xAxisLocation = plot.getDomainAxisEdge();
RectangleEdge yAxisLocation = plot.getRangeAxisEdge();
double transX0 = domainAxis.valueToJava2D(x0, dataArea, xAxisLocation);
double transY0 = rangeAxis.valueToJava2D(y0, dataArea, yAxisLocation);
double transX1 = domainAxis.valueToJava2D(x1, dataArea, xAxisLocation);
double transY1 = rangeAxis.valueToJava2D(y1, dataArea, yAxisLocation);
// only draw if we have good values
if (Double.isNaN(transX0)
|| Double.isNaN(transY0)
|| Double.isNaN(transX1)
|| Double.isNaN(transY1)) {
return;
}
PlotOrientation orientation = plot.getOrientation();
boolean visible;
if (orientation == PlotOrientation.HORIZONTAL) {
state.workingLine.setLine(transY0, transX0, transY1, transX1);
} else if (orientation == PlotOrientation.VERTICAL) {
state.workingLine.setLine(transX0, transY0, transX1, transY1);
}
visible = LineUtilities.clipLine(state.workingLine, dataArea);
if (visible) {
drawFirstPassShape(g2, pass, series, item, state.workingLine);
}
}
/**
* Draws the item (first pass). This method draws the lines connecting the items. Instead of
* drawing separate lines, a GeneralPath is constructed and drawn at the end of the series
* painting.
*
* @param g2 the graphics device.
* @param state the renderer state.
* @param plot the plot (can be used to obtain standard color information etc).
* @param dataset the dataset.
* @param pass the pass.
* @param series the series index (zero-based).
* @param item the item index (zero-based).
* @param domainAxis the domain axis.
* @param rangeAxis the range axis.
* @param dataArea the area within which the data is being drawn.
*/
protected void drawPrimaryLineAsPath(
XYItemRendererState state,
Graphics2D g2,
XYPlot plot,
XYDataset dataset,
int pass,
int series,
int item,
ValueAxis domainAxis,
ValueAxis rangeAxis,
Rectangle2D dataArea) {
RectangleEdge xAxisLocation = plot.getDomainAxisEdge();
RectangleEdge yAxisLocation = plot.getRangeAxisEdge();
// get the data point...
double x1 = dataset.getXValue(series, item);
double y1 = dataset.getYValue(series, item);
double transX1 = domainAxis.valueToJava2D(x1, dataArea, xAxisLocation);
double transY1 = rangeAxis.valueToJava2D(y1, dataArea, yAxisLocation);
State s = (State) state;
// update path to reflect latest point
if (!Double.isNaN(transX1) && !Double.isNaN(transY1)) {
float x = (float) transX1;
float y = (float) transY1;
PlotOrientation orientation = plot.getOrientation();
if (orientation == PlotOrientation.HORIZONTAL) {
x = (float) transY1;
y = (float) transX1;
}
if (s.isLastPointGood()) {
s.seriesPath.lineTo(x, y);
} else {
s.seriesPath.moveTo(x, y);
}
s.setLastPointGood(true);
} else {
s.setLastPointGood(false);
}
// if this is the last item, draw the path ...
if (item == s.getLastItemIndex()) {
// draw path
drawFirstPassShape(g2, pass, series, item, s.seriesPath);
}
}