home *** CD-ROM | disk | FTP | other *** search
- #include <stdio.h>
-
- /*
- * simple ascii to rayshade height field converter.
- * reads standard in, writes standard out.
- * each number must be on a line by itself.
- *
- * Rusty Wright
- * rusty@garnet.berkeley.edu
- */
-
- #ifdef __WATCOMC__
- #include <fcntl.h>
- #endif
-
- main(int argc,char **argv) {
- char buf[BUFSIZ];
- int length, line;
- float height;
-
-
- if (argc!=1) {
- printf("Convert ascii file to .hf file for RayShade.\n\n");
- printf("usage: a2hf < infile > outfile\n\n");
- exit(1);
- }
-
- #ifdef __WATCOMC__
- setmode(stdin->_handle,O_BINARY);
- setmode(stdout->_handle,O_BINARY);
- #endif
-
- if (fgets(buf, sizeof(buf), stdin) == NULL) {
- fprintf(stderr, "premature eof on stdin\n");
- exit(1);
- }
-
- line = 1;
-
- if (sscanf(buf, "%d", &length) != 1) {
- fprintf(stderr, "format error line %d\n", line);
- exit(1);
- }
-
- if (fwrite((char *) &length, sizeof(length), 1, stdout) != 1) {
- perror("write");
- exit(1);
- }
-
- while (fgets(buf, sizeof(buf), stdin) != NULL) {
- line++;
-
- if (sscanf(buf, "%g", &height) != 1) {
- fprintf(stderr, "format error line %d\n", line);
- exit(1);
- }
-
- if (fwrite((char *) &height, sizeof(height), 1, stdout) != 1) {
- perror("write");
- exit(1);
- }
- }
-
- exit(0);
- }