public GeoPath traceSingleContourAtPoint(GeoGrid geoGrid, double x, double y) {
this.flags = new boolean[geoGrid.getRows()][geoGrid.getCols()];
double cellSize = geoGrid.getCellSize();
double west = geoGrid.getWest();
double north = geoGrid.getNorth();
double level = geoGrid.getBicubicInterpol(x, y);
int[] cell = new int[] {(int) ((x - west) / cellSize), (int) ((north - y) / cellSize)};
GeoPath geoPath = traceContour(geoGrid.getGrid(), cell, level, west, north, cellSize);
return geoPath;
}
private void contourLevel(GeoGrid geoGrid, double level, GeoSet levelGeoSet) {
final int nbrCellsX = geoGrid.getCols() - 1;
final int nbrCellsY = geoGrid.getRows() - 1;
float[][] grid = geoGrid.getGrid();
double west = geoGrid.getWest();
double north = geoGrid.getNorth();
double cellSize = geoGrid.getCellSize();
for (int i = 0; i < this.flags.length; i++) {
java.util.Arrays.fill(this.flags[i], false);
}
for (int y = 0; y < nbrCellsY; y++) {
boolean[] flag_row = flags[y];
for (int x = 0; x < nbrCellsX; x++) {
if (flag_row[x] == false) {
traceContour(grid, new int[] {x, y}, level, west, north, cellSize, levelGeoSet);
}
}
}
}
public GeoObject operate(GeoGrid geoGrid, double firstContourLevel, double lastContourLevel) {
flags = new boolean[geoGrid.getRows()][geoGrid.getCols()];
GeoSet geoSet = new GeoSet();
final int nlevels = (int) ((lastContourLevel - firstContourLevel) / interval) + 1;
if (treatDegreeJump) {
GeoSet levelGeoSet = new GeoSet();
this.contourLevel(geoGrid, 0.f, levelGeoSet);
levelGeoSet.setName(Float.toString(0.f));
geoSet.add(levelGeoSet);
}
for (int i = 0; i < nlevels; ++i) {
final double contourLevel = firstContourLevel + i * interval;
GeoSet levelGeoSet = new GeoSet();
this.contourLevel(geoGrid, contourLevel, levelGeoSet);
levelGeoSet.setName(Double.toString(contourLevel));
geoSet.add(levelGeoSet);
}
return geoSet;
}