first commit

utils/climate/asc2a.cpp

@@ -0,0 +1,77 @@
+
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <climits>
+#include <string>
+
+#include "texture.hxx"
+
+#define NCOLS 4320 
+#define NROWS 2160 
+
+enum STR2INT_ERROR { SUCCESS, OVERFLOW, UNDERFLOW, INCONVERTIBLE };
+
+STR2INT_ERROR str2int (int &i, char const *s, int base = 0)
+{
+    char *end;
+    long  l;
+    errno = 0;
+    l = strtol(s, &end, base);
+    if ((errno == ERANGE && l == LONG_MAX) || l > INT_MAX) {
+        std::cerr << "OVERFLOW" << std::endl;
+        return OVERFLOW;
+    }
+    if ((errno == ERANGE && l == LONG_MIN) || l < INT_MIN) {
+        std::cerr << "UNDERFLOW" << std::endl;
+        return UNDERFLOW;
+    }
+    if (*s == '\0' || end == s) {
+        std::cerr << "INCONVERTIBLE: " << s << std::endl;
+        return INCONVERTIBLE;
+    }
+    i = l;
+    return SUCCESS;
+}
+
+int main(int argc, char **argv)
+{
+    if (argc < 3) {
+        printf("Uage: %s <infile>.asc <outfile>.rgb\n\n", argv[0]);
+        exit(-1);
+    }
+
+    const char *infile = argv[1];
+    const char *outfile = argv[2];
+
+    SGTexture texture(NCOLS, NROWS);
+    std::ifstream file(infile);
+    std::string str; 
+
+    texture.prepare(NCOLS, NROWS);
+    texture.set_colors(1);
+
+    GLuint row = 0;
+    unsigned int line = 0;
+    while (std::getline(file, str))
+    {
+        GLuint col = 0;
+        int num = 0;
+
+        if (++line < 7) continue;
+
+        std::istringstream iss(str);
+        std::string token;
+        while (std::getline(iss, token, ' '))
+        {
+            if (str2int(num, token.c_str(), 10) == SUCCESS)
+            {
+                GLubyte val = (num == 32) ? 0 : 4*num;
+                texture.set_pixel(col++, NROWS-row, &val);
+            }
+        }	
+        row++;
+    }
+
+    texture.write_texture(outfile);
+}