public PointF[] GenerateElevationGraphic(GPXAnalyzer frm, int Trackidx, int width, int height, int borderWidth)
{
trkType track = gpxInfo.trk[Trackidx];
trksegType seg = track.trkseg[0];
wptType wpt;
wptType wptPrev = seg.trkpt[0];
double runningDist = 0;
PointF[] Points = new PointF[seg.trkpt.Length];
SetupTrackData(Trackidx);
// Compute scale factor
// Determine elevation difference.
double dele = maxEle - minEle;
double xScale = (width - 2 * borderWidth) / totalDist;
double yScale = (height - 2 * borderWidth) / dele;
// Calculate graphics code
for (int iPoint = 0; iPoint < seg.trkpt.Length; iPoint++)
{
wpt = seg.trkpt[iPoint];
runningDist += distances[iPoint]; //stored geo calc
PointF pt = frm.DistEleToScreen(runningDist, (double)wpt.ele, minEle, xScale, yScale);
Points[iPoint] = pt;
wptPrev = wpt;
}
// Draw the lines between the points
return Points;
}
