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Rename SRTM variables because it's not SRTM specific

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This commit is contained in:
Manuel Fuhr 2023-05-15 21:45:21 +02:00
parent 7c184a03f9
commit 53a5f44645
1 changed files with 12 additions and 12 deletions
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24
brouter-map-creator/src/main/java/btools/mapcreator/ConvertLidarTile.java
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@ -20,10 +20,11 @@ public class ConvertLidarTile {
public static final short NODATA2 = -32767; // hgt-formats nodata
public static final short NODATA = Short.MIN_VALUE;
private static final int SRTM_BORDER_OVERLAP = 1;
private static final int SRTM3_ROW_LENGTH = 1201; // 3 arc second resolution (90m)
private static final int SRTM3_FILE_SIZE = SRTM3_ROW_LENGTH * SRTM3_ROW_LENGTH * Short.BYTES;
private static final int SRTM1_ROW_LENGTH = 3601; // 1 arc second resolution (30m)
private static final String HGT_FILE_EXT = ".hgt";
private static final int HGT_BORDER_OVERLAP = 1;
private static final int HGT_3ASEC_ROWS = 1201; // 3 arc second resolution (90m)
private static final int HGT_3ASEC_FILE_SIZE = HGT_3ASEC_ROWS * HGT_3ASEC_ROWS * Short.BYTES;
private static final int HGT_1ASEC_ROWS = 3601; // 1 arc second resolution (30m)
static short[] imagePixels;
@ -33,8 +34,8 @@ public class ConvertLidarTile {
for (; ; ) {
ZipEntry ze = zis.getNextEntry();
if (ze == null) break;
if (ze.getName().endsWith(".hgt")) {
readHgtFromStream(zis, rowOffset, colOffset, SRTM3_ROW_LENGTH);
if (ze.getName().toLowerCase().endsWith(HGT_FILE_EXT)) {
readHgtFromStream(zis, rowOffset, colOffset, HGT_3ASEC_ROWS);
return;
}
}
@ -56,7 +57,7 @@ public class ConvertLidarTile {
int i0 = dis.read();
if (i0 == -1 || i1 == -1)
throw new RuntimeException("unexcepted end of file reading hgt entry!");
throw new RuntimeException("unexpected end of file reading hgt entry!");
short val = (short) ((i1 << 8) | i0);
@ -198,7 +199,6 @@ public class ConvertLidarTile {
InputStream inputStream;
if (f.getName().toLowerCase().endsWith(".zip")) {
String HGT_FILE_EXT = ".hgt";
ZipInputStream zis = new ZipInputStream(new BufferedInputStream(new FileInputStream(f)));
for (; ; ) {
ZipEntry ze = zis.getNextEntry();
@ -217,10 +217,10 @@ public class ConvertLidarTile {
}
int rowLength;
if (fileSize > SRTM3_FILE_SIZE) {
rowLength = SRTM1_ROW_LENGTH;
if (fileSize > HGT_3ASEC_FILE_SIZE) {
rowLength = HGT_1ASEC_ROWS;
} else {
rowLength = SRTM3_ROW_LENGTH;
rowLength = HGT_3ASEC_ROWS;
}
// stay at 1 deg * 1 deg raster
@ -239,7 +239,7 @@ public class ConvertLidarTile {
raster.ncols = NCOLS;
raster.halfcol = false; // assume full resolution
raster.noDataValue = NODATA;
raster.cellsize = 1. / (double) (rowLength - SRTM_BORDER_OVERLAP);
raster.cellsize = 1. / (double) (rowLength - HGT_BORDER_OVERLAP);
raster.xllcorner = (int) (lon < 0 ? lon - 1 : lon); //onDegreeStart - raster.cellsize;
raster.yllcorner = (int) (lat < 0 ? lat - 1 : lat); //latDegreeStart - raster.cellsize;
raster.eval_array = imagePixels;