void mgDrawPolyOutline(struct memGfx *mg, struct gfxPoly *poly, Color color)
/* Draw a singe pixel line around polygon. */
{
struct gfxPoint *a, *b, *end;
a = end = poly->ptList;
b = a->next;
for (;;)
{
mgDrawLine(mg, a->x, a->y, b->x, b->y, color);
a = b;
b = b->next;
if (a == end)
break;
}
}
void gcSquiggle(char *chromName, char *destDir, char *type, bool thick, bool line)
/* Make gcSquiggle pic for chromosome. */
{
char gifName[512];
int chromSize = hChromSize(chromName);
struct memGfx *mg = getScaledMg(chromSize, squiggleHeight);
int dotWidth = mg->width;
char nibName[512];
FILE *nibFile;
int nibChromSize;
struct dnaSeq *seq = NULL;
double lastGcPercent = (gcPercentMin+gcPercentMax)/2;
double gcPercent;
int startBase = 0, endBase = 0, baseWidth;
int lastDot = -1, dot;
int realBaseCount;
int gcBaseCount;
bool lastMissing = TRUE;
int squigHeight = squiggleHeight-thick;
int y1,y2;
sprintf(gifName, "%s/%sgc%s.gif", destDir, chromName, type);
sprintf(nibName, "%s/%s.nib", nibDir, chromName);
nibOpenVerify(nibName, &nibFile, &nibChromSize);
if (nibChromSize != chromSize)
errAbort("Disagreement on size of %s between database and %s\n",
chromName, nibName);
for (dot = 0; dot <dotWidth; ++dot)
{
startBase = endBase;
endBase = dotToBase(dot+1);
if (endBase > nibChromSize)
endBase = nibChromSize;
baseWidth = endBase-startBase;
seq = nibLdPart(nibName, nibFile, nibChromSize, startBase, baseWidth);
realBaseCount = realDnaCount(seq->dna, seq->size);
gcBaseCount = gcDnaCount(seq->dna, seq->size);
if (realBaseCount < 20)
{
/* Add psuedocounts from last time if sample is small. */
lastMissing = TRUE;
}
else
{
gcPercent = (double)gcBaseCount/(double)realBaseCount;
y2 = gcScaleRange(gcPercent, squigHeight);
if (line && !lastMissing)
{
y1 = gcScaleRange(lastGcPercent, squigHeight);
mgDrawLine(mg, dot-1, y1, dot, y2, MG_BLACK);
if (thick)
{
mgDrawLine(mg, dot-1, y1+1, dot, y2+1, MG_BLACK);
}
}
else
{
mgPutDot(mg, dot, y2, MG_BLACK);
if (thick)
mgPutDot(mg, dot, y2+1, MG_BLACK);
}
lastGcPercent = gcPercent;
lastMissing = FALSE;
}
freeDnaSeq(&seq);
}
fclose(nibFile);
mgSaveGif(mg, gifName);
mgFree(&mg);
}