From 524ec03927060741cab9c4b5307204a86bdcb21a Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Tue, 3 Mar 1998 02:04:01 +0000
Subject: [PATCH] Starting DEM Ascii format output routine.

---
 DemRaw2ascii/rawdem.c | 142 +++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 140 insertions(+), 2 deletions(-)

diff --git a/DemRaw2ascii/rawdem.c b/DemRaw2ascii/rawdem.c
index 1d24888b1..4004a9eed 100644
--- a/DemRaw2ascii/rawdem.c
+++ b/DemRaw2ascii/rawdem.c
@@ -205,6 +205,141 @@ void rawConvertCenter2Edge( fgRAWDEM *raw ) {
 
 /* Dump out the ascii format DEM file */
 void rawDumpAsciiDEM( fgRAWDEM *raw ) {
+    char outfile[256];
+    /* Generate output file name */
+    
+    
+    /* Dump the "A" record */
+
+    /* get the name field (144 characters) */
+    for ( i = 0; i < 144; i++ ) {
+        name[i] = fgetc(fd);
+    }
+    name[i+1] = '\0';
+
+    /* clean off the whitespace at the end */
+    for ( i = strlen(name)-2; i > 0; i-- ) {
+        if ( !isspace(name[i]) ) {
+            i=0;
+        } else {
+            name[i] = '\0'; 
+        }
+    }
+    printf("    Quad name field: %s\n", name);
+
+    /* get quadrangle id (now part of previous section  */
+    /* next_token(fd, dem_quadrangle); */
+    /* printf("    Quadrangle = %s\n", dem_quadrangle); */
+
+    /* DEM level code, 3 reflects processing by DMA */
+    inum = next_int(fd);
+    printf("    DEM level code = %d\n", inum);
+
+    /* Pattern code, 1 indicates a regular elevation pattern */
+    inum = next_int(fd);
+    printf("    Pattern code = %d\n", inum);
+
+    /* Planimetric reference system code, 0 indicates geographic 
+     * coordinate system. */
+    inum = next_int(fd);
+    printf("    Planimetric reference code = %d\n", inum);
+
+    /* Zone code */
+    inum = next_int(fd);
+    printf("    Zone code = %d\n", inum);
+
+    /* Map projection parameters (ignored) */
+    for ( i = 0; i < 15; i++ ) {
+        dnum = next_double(fd);
+        /* printf("%d: %f\n",i,dnum); */
+    }
+
+    /* Units code, 3 represents arc-seconds as the unit of measure for
+     * ground planimetric coordinates throughout the file. */
+    inum = next_int(fd);
+    if ( inum != 3 ) {
+        printf("    Unknown (X,Y) units code = %d!\n", inum);
+        exit(-1);
+    }
+
+    /* Units code; 2 represents meters as the unit of measure for
+     * elevation coordinates throughout the file. */
+    inum = next_int(fd);
+    if ( inum != 2 ) {
+        printf("    Unknown (Z) units code = %d!\n", inum);
+        exit(-1);
+    }
+
+    /* Number (n) of sides in the polygon which defines the coverage of
+     * the DEM file (usually equal to 4). */
+    inum = next_int(fd);
+    if ( inum != 4 ) {
+        printf("    Unknown polygon dimension = %d!\n", inum);
+        exit(-1);
+    }
+
+    /* Ground coordinates of bounding box in arc-seconds */
+    dem_x1 = m->originx = next_exp(fd);
+    dem_y1 = m->originy = next_exp(fd);
+    printf("    Origin = (%.2f,%.2f)\n", m->originx, m->originy);
+
+    dem_x2 = next_exp(fd);
+    dem_y2 = next_exp(fd);
+
+    dem_x3 = next_exp(fd);
+    dem_y3 = next_exp(fd);
+
+    dem_x4 = next_exp(fd);
+    dem_y4 = next_exp(fd);
+
+    /* Minimum/maximum elevations in meters */
+    dem_z1 = next_exp(fd);
+    dem_z2 = next_exp(fd);
+    printf("    Elevation range %.4f %.4f\n", dem_z1, dem_z2);
+
+    /* Counterclockwise angle from the primary axis of ground
+     * planimetric referenced to the primary axis of the DEM local
+     * reference system. */
+    next_token(fd, token);
+
+    /* Accuracy code; 0 indicates that a record of accuracy does not
+     * exist and that no record type C will follow. */
+    /* DEM spacial resolution.  Usually (3,3,1) (3,6,1) or (3,9,1)
+     * depending on latitude */
+    /* I will eventually have to do something with this for data at
+     * higher latitudes */
+    next_token(fd, token);
+    printf("    accuracy & spacial resolution string = %s\n", token);
+    i = strlen(token);
+    printf("    length = %d\n", i);
+
+    ptr = token + i - 12;
+    printf("    last field = %s = %.2f\n", ptr, atof(ptr));
+    ptr[0] = '\0';
+
+    ptr = ptr - 12;
+    m->col_step = atof(ptr);
+    printf("    last field = %s = %.2f\n", ptr, m->row_step);
+    ptr[0] = '\0';
+
+    ptr = ptr - 12;
+    m->row_step = atof(ptr);
+    printf("    last field = %s = %.2f\n", ptr, m->col_step);
+    ptr[0] = '\0';
+
+    /* accuracy code = atod(token) */
+    inum = atoi(token);
+    printf("    Accuracy code = %d\n", inum);
+
+    printf("    column step = %.2f  row step = %.2f\n", 
+           m->col_step, m->row_step);
+    /* dimension of arrays to follow (1)*/
+    next_token(fd, token);
+
+    /* number of profiles */
+    dem_num_profiles = m->cols = m->rows = next_int(fd);
+    printf("    Expecting %d profiles\n", dem_num_profiles);
+
 }
 
 
@@ -291,7 +426,10 @@ void rawReadStrip( fgRAWDEM *raw, int lat_degrees ) {
 
 
 /* $Log$
-/* Revision 1.1  1998/03/02 23:31:01  curt
-/* Initial revision.
+/* Revision 1.2  1998/03/03 02:04:01  curt
+/* Starting DEM Ascii format output routine.
 /*
+ * Revision 1.1  1998/03/02 23:31:01  curt
+ * Initial revision.
+ *
  */
-- 
2.39.2