private final List<Point2D> getPointsFrom(
GraphSettings gInfo, Graph g, Year startYear, int nYears, int bottom) {
// index into our data values for this particular year
int idx = startYear.diff(g.graph.getStart().add(g.xoffset));
// make a list of points
// this is ok, because we know points are continuous
List<Point2D> points = new ArrayList<Point2D>(nYears);
// the year the plot starts
Year plotStartYear = gInfo.getDrawBounds().getStart();
// the adjusted range of this graph
Range graphRange = g.getRange();
int yearWidth = gInfo.getYearWidth();
float unitScale = gInfo.getHundredUnitHeight() / 100.0f;
for (int i = 0; i <= nYears; i++) {
// skip points that don't exist
if (!graphRange.contains(startYear.add(i))) continue;
int value = g.graph.getRingWidthData().get(idx + i).intValue();
int x = getXValue(g, plotStartYear, yearWidth, idx + i);
int y = getYValue(g, unitScale, value, bottom);
points.add(new Point2D.Float(x, y));
}
return points;
}
private final int getDataValue(Graph g, Year y) {
int i = y.diff(g.graph.getStart().add(g.xoffset));
return g.graph.getRingWidthData().get(i).intValue();
}