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svg.cpp
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svg.cpp
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//
// Created by Martin Wickham on 3/12/16.
//
#include "svg.h"
static inline int writeGridLine(FILE *f, int x, int y, int x2, int y2, int usage, int cap) {
int overflow = 0;
int r, g, b, width;
if (usage == 0) {
return 0;
} else if (usage <= cap) {
// non-overflow case... grey. darker == more usage
r = 255 - 225 * usage / (cap + 1);
g = r;
b = r;
width = 7 * usage / cap;
} else {
// overflow... red.
r = 255;
g = 0;
b = 0;
width = 6;
overflow = usage - cap;
}
fprintf(f,
"<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" style=\"stroke:rgb(%d,%d,%d);stroke-width:%d\" />\n",
10*x + 5, 10*y + 5, 10*x2 + 5, 10*y2 + 5, r, g, b, width);
return overflow;
}
int writeCongestionSvg(const RoutingInst &inst, const char *filename) {
int overflow = 0;
FILE* f = fopen(filename, "w");
fprintf(f, "<!DOCTYPE html><html><body>\n");
fprintf(f, "<svg xmlns=\"http://www.w3.org/2000/svg\" version=\"1.1\" style='width:%ipx;height:%ipx'>\n", inst.gx * 10, inst.gy * 10);
fprintf(f, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" style=\"stroke:black;stroke-width:1\" />\n", 0, 0, 0, 10*inst.gy);
fprintf(f, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" style=\"stroke:black;stroke-width:1\" />\n", 0, 10*inst.gy, 10*inst.gx, 10*inst.gy);
fprintf(f, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" style=\"stroke:black;stroke-width:1\" />\n", 10*inst.gx, 0, 10*inst.gx, 10*inst.gy);
fprintf(f, "<line x1=\"%d\" y1=\"%d\" x2=\"%d\" y2=\"%d\" style=\"stroke:black;stroke-width:1\" />\n", 0, 0, 10*inst.gx, 0);
for (int y = 0; y < inst.gy; y++) {
for (int x = 0; x < inst.gx; x++) {
const Cell &util = inst.util(x, y);
if (x < inst.gx - 1) {
overflow += writeGridLine(f, x, y, x+1, y, util.right, inst.cap);
}
if (y < inst.gy - 1) {
overflow += writeGridLine(f, x, y, x, y+1, util.down, inst.cap);
}
}
}
fprintf(f, "</svg></body></html>");
fclose(f);
return overflow;
}