/**
* Method to plot the data points as a curve chart
*
* @param g (Graphics)
*/
private void drawCurveGraphics(Graphics g) {
for (ScatterPlotData currentScatterPlot : data) {
g.setColor(currentScatterPlot.getColor());
for (int j = 0; j < (currentScatterPlot.getData().length - 1); j++) {
Point current =
new Point(
getTranslatedPoint(
currentScatterPlot.getData()[j][0], currentScatterPlot.getData()[j][1]));
Point nexttonext =
new Point(
getTranslatedPoint(
currentScatterPlot.getData()[j + 1][0],
currentScatterPlot.getData()[j + 1][1]));
g.drawLine(current.x, current.y, nexttonext.x, nexttonext.y);
if ((currentScatterPlot.getData()[j][0] < xAxis.getMin())
|| (currentScatterPlot.getData()[j][0] > xAxis.getMax())
|| (currentScatterPlot.getData()[j + 1][1] <= yAxis.getMax())) {
// we erase the part of the line that is not in the chart area
// this means that the curve needs to be drawn before the axis and ticks and legend
g.setColor(getBackground());
g.fillRect(0, 0, getWidth(), PAD);
g.fillRect(0, getHeight() - PAD, getWidth(), PAD);
g.setColor(currentScatterPlot.getColor());
}
}
}
}
/**
* @param screenPoint {@link Point} of a screen position
* @return original data Point corresponding to the specified screen position
*/
private Point2D getDataPoint(Point screenPoint) {
Point2D.Double retPoint = new Point2D.Double();
retPoint.x =
(((screenPoint.x - PAD) * (xAxis.getMax() - xAxis.getMin())) / (getWidth() - (2 * PAD)))
+ xAxis.getMin();
retPoint.y =
(-1
* ((((screenPoint.y - getHeight()) + PAD) * (yAxis.getMax() - yAxis.getMin()))
/ (getHeight() - (2 * PAD))))
+ yAxis.getMin();
return retPoint;
}
/**
* Method to plot the data points as a point chart
*
* @param g (Graphics)
*/
private void drawPointGraphics(Graphics g) {
for (ScatterPlotData currentScatterPlot : data) {
g.setColor(currentScatterPlot.getColor());
for (int j = 0; j < (currentScatterPlot.getData().length - 1); j++) {
Point current =
new Point(
getTranslatedPoint(
currentScatterPlot.getData()[j][0], currentScatterPlot.getData()[j][1]));
Point next =
new Point(
getTranslatedPoint(
currentScatterPlot.getData()[j + 1][0], currentScatterPlot.getData()[j][1]));
if ((currentScatterPlot.getData()[j][0] >= xAxis.getMin())
&& (currentScatterPlot.getData()[j][0] <= xAxis.getMax())
&& (currentScatterPlot.getData()[j][1] >= yAxis.getMin())
&& (currentScatterPlot.getData()[j][1] <= yAxis.getMax())) {
g.drawLine(current.x, current.y, next.x, next.y);
}
}
}
}