private static double readDouble(PushbackReader read) throws IOException {
StringBuffer s = new StringBuffer();
int count = -1;
while (true) {
char ch = (char) read.read();
// skip spaces
if (ch == ' ') continue;
count++;
// allow a - only if at the beginning
if (ch == '-' && count == 0) {
// u.p("negative number");
s.append(ch);
continue;
}
if ((ch >= '0' && ch <= '9') || ch == '.') {
// u.p("got double part " + ch);
s.append(ch);
} else {
if (ch != ',') {
read.unread(ch);
}
break;
}
}
return Double.parseDouble(s.toString());
}
private static SNode parsePathNode(Elem root) throws IOException {
SPath path = new SPath();
String d = root.attr("d");
PushbackReader read = new PushbackReader(new StringReader(d));
int count = 0;
double x = 0;
double y = 0;
SPath.PathPoint prev = null;
boolean go = true;
while (go) {
count++;
char ch = (char) read.read();
if (ch == -1) break;
double x1, x2, y1, y2;
u.p("ch = " + ch);
switch (ch) {
// absolute move
case 'M':
x = readDouble(read);
y = readDouble(read);
prev = path.moveTo(x, y);
continue;
// relative vertical lineto
case 'v':
y += readDouble(read);
prev = path.lineTo(x, y);
continue;
// absolute vertical lineto
case 'V':
y = readDouble(read);
prev = path.lineTo(x, y);
continue;
// relative horiz lineto
case 'h':
x += readDouble(read);
prev = path.lineTo(x, y);
continue;
case 'H':
x = readDouble(read);
prev = path.lineTo(x, y);
continue;
// relative lineto
case 'l':
x += readDouble(read);
y += readDouble(read);
prev = path.lineTo(x, y);
continue;
case 'L':
x = readDouble(read);
y = readDouble(read);
prev = path.lineTo(x, y);
continue;
// relative cubic curve
case 'c':
x1 = x + readDouble(read);
y1 = y + readDouble(read);
x2 = x + readDouble(read);
y2 = y + readDouble(read);
x += readDouble(read);
y += readDouble(read);
prev = path.curveTo(prev, x1, y1, x2, y2, x, y);
continue;
// relative shorthand curve
case 's':
x2 = x + readDouble(read);
y2 = y + readDouble(read);
x += readDouble(read);
y += readDouble(read);
double dx = prev.x - prev.cx1;
double dy = prev.y - prev.cy1;
double rx = prev.x + dx;
double ry = prev.y + dy;
prev = path.curveTo(prev, rx, ry, x2, y2, x, y);
continue;
// absolute cubic curve
case 'C':
x1 = readDouble(read);
y1 = readDouble(read);
x2 = readDouble(read);
y2 = readDouble(read);
x = readDouble(read);
y = readDouble(read);
prev = path.curveTo(prev, x1, y1, x2, y2, x, y);
continue;
case 'z':
path.close();
break;
case ' ':
continue;
case '\n':
continue;
// end of string
case (char) -1:
go = false;
break;
default:
u.p("unrecognized character! " + ch + " " + ((int) ch));
go = false;
break;
}
}
parseFill(path, root);
parseStroke(path, root);
return path;
}