public static List<BezierPath> fromPathData(String str) throws IOException {
LinkedList<BezierPath> paths = new LinkedList<BezierPath>();
BezierPath path = null;
Point2D.Double p = new Point2D.Double();
Point2D.Double c1 = new Point2D.Double();
Point2D.Double c2 = new Point2D.Double();
StreamTokenizer tt = new StreamTokenizer(new StringReader(str));
tt.resetSyntax();
tt.parseNumbers();
tt.whitespaceChars(0, ' ');
tt.whitespaceChars(',', ',');
char nextCommand = 'M';
char command = 'M';
while (tt.nextToken() != StreamTokenizer.TT_EOF) {
if (tt.ttype > 0) {
command = (char) tt.ttype;
} else {
command = nextCommand;
tt.pushBack();
}
BezierPath.Node node;
switch (command) {
// moveto
case 'M':
if (path != null) {
paths.add(path);
}
path = new BezierPath();
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y = tt.nval;
path.moveTo(p.x, p.y);
nextCommand = 'L';
break;
case 'm':
if (path != null) {
paths.add(path);
}
path = new BezierPath();
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x += tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y += tt.nval;
path.moveTo(p.x, p.y);
nextCommand = 'l';
// close path
break;
case 'Z':
case 'z':
p.x = path.get(0).x[0];
p.y = path.get(0).y[0];
path.setClosed(true);
// lineto
break;
case 'L':
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y = tt.nval;
path.lineTo(p.x, p.y);
nextCommand = 'L';
break;
case 'l':
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x += tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y += tt.nval;
path.lineTo(p.x, p.y);
nextCommand = 'l';
break;
case 'H':
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x = tt.nval;
path.lineTo(p.x, p.y);
nextCommand = 'H';
break;
case 'h':
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x += tt.nval;
path.lineTo(p.x, p.y);
nextCommand = 'h';
break;
case 'V':
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y = tt.nval;
path.lineTo(p.x, p.y);
nextCommand = 'V';
break;
case 'v':
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y += tt.nval;
path.lineTo(p.x, p.y);
nextCommand = 'v';
// curveto
break;
case 'C':
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c1.x = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c1.y = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c2.x = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c2.y = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y = tt.nval;
path.curveTo(c1.x, c1.y, c2.x, c2.y, p.x, p.y);
nextCommand = 'C';
break;
case 'c':
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c1.x = p.x + tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c1.y = p.y + tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c2.x = p.x + tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c2.y = p.y + tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x += tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y += tt.nval;
path.curveTo(c1.x, c1.y, c2.x, c2.y, p.x, p.y);
nextCommand = 'c';
break;
case 'S':
node = path.get(path.size() - 1);
c1.x = node.x[0] * 2d - node.x[1];
c1.y = node.y[0] * 2d - node.y[1];
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c2.x = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c2.y = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y = tt.nval;
path.curveTo(c1.x, c1.y, c2.x, c2.y, p.x, p.y);
nextCommand = 'S';
break;
case 's':
node = path.get(path.size() - 1);
c1.x = node.x[0] * 2d - node.x[1];
c1.y = node.y[0] * 2d - node.y[1];
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c2.x = p.x + tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c2.y = p.y + tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x += tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y += tt.nval;
path.curveTo(c1.x, c1.y, c2.x, c2.y, p.x, p.y);
nextCommand = 's';
// quadto
break;
case 'Q':
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c1.x = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c1.y = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y = tt.nval;
path.quadTo(c1.x, c1.y, p.x, p.y);
nextCommand = 'Q';
break;
case 'q':
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c1.x = p.x + tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
c1.y = p.y + tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x += tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y += tt.nval;
path.quadTo(c1.x, c1.y, p.x, p.y);
nextCommand = 'q';
break;
case 'T':
node = path.get(path.size() - 1);
c1.x = node.x[0] * 2d - node.x[1];
c1.y = node.y[0] * 2d - node.y[1];
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y = tt.nval;
path.quadTo(c1.x, c1.y, p.x, p.y);
nextCommand = 'T';
break;
case 't':
node = path.get(path.size() - 1);
c1.x = node.x[0] * 2d - node.x[1];
c1.y = node.y[0] * 2d - node.y[1];
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.x += tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) throw new IOException("Number expected");
p.y += tt.nval;
path.quadTo(c1.x, c1.y, p.x, p.y);
nextCommand = 's';
break;
default:
throw new IOException("Illegal command: " + command);
}
}
if (path != null) {
paths.add(path);
}
return paths;
}
public static AffineTransform getTransform(String str) throws IOException {
AffineTransform t = new AffineTransform();
if (str != null) {
StreamTokenizer tt = new StreamTokenizer(new StringReader(str));
tt.resetSyntax();
tt.wordChars('a', 'z');
tt.wordChars('A', 'Z');
tt.wordChars(128 + 32, 255);
tt.whitespaceChars(0, ' ');
tt.whitespaceChars(',', ',');
tt.parseNumbers();
while (tt.nextToken() != StreamTokenizer.TT_EOF) {
if (tt.ttype != StreamTokenizer.TT_WORD) {
throw new IOException("Illegal transform " + str);
}
String type = tt.sval;
if (tt.nextToken() != '(') {
throw new IOException("'(' not found in transform " + str);
}
if (type.equals("matrix")) {
double[] m = new double[6];
for (int i = 0; i < 6; i++) {
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException(
"Matrix value "
+ i
+ " not found in transform "
+ str
+ " token:"
+ tt.ttype
+ " "
+ tt.sval);
}
if (tt.nextToken() == StreamTokenizer.TT_WORD && tt.sval.startsWith("E")) {
double mantissa = tt.nval;
tt.nval = Double.valueOf(tt.nval + tt.sval);
} else {
tt.pushBack();
}
m[i] = tt.nval;
}
t.concatenate(new AffineTransform(m));
} else if (type.equals("translate")) {
double tx, ty;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("X-translation value not found in transform " + str);
}
tx = tt.nval;
if (tt.nextToken() == StreamTokenizer.TT_NUMBER) {
ty = tt.nval;
} else {
tt.pushBack();
ty = 0;
}
t.translate(tx, ty);
} else if (type.equals("scale")) {
double sx, sy;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("X-scale value not found in transform " + str);
}
sx = tt.nval;
if (tt.nextToken() == StreamTokenizer.TT_NUMBER) {
sy = tt.nval;
} else {
tt.pushBack();
sy = sx;
}
t.scale(sx, sy);
} else if (type.equals("rotate")) {
double angle, cx, cy;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("Angle value not found in transform " + str);
}
angle = tt.nval;
if (tt.nextToken() == StreamTokenizer.TT_NUMBER) {
cx = tt.nval;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("Y-center value not found in transform " + str);
}
cy = tt.nval;
} else {
tt.pushBack();
cx = cy = 0;
}
t.rotate(angle * Math.PI / 180d, cx * Math.PI / 180d, cy * Math.PI / 180d);
} else if (type.equals("skewX")) {
double angle;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("Skew angle not found in transform " + str);
}
angle = tt.nval;
t.concatenate(new AffineTransform(1, 0, Math.tan(angle * Math.PI / 180), 1, 0, 0));
} else if (type.equals("skewY")) {
double angle;
if (tt.nextToken() != StreamTokenizer.TT_NUMBER) {
throw new IOException("Skew angle not found in transform " + str);
}
angle = tt.nval;
t.concatenate(new AffineTransform(1, Math.tan(angle * Math.PI / 180), 0, 1, 0, 0));
} else {
throw new IOException("Unknown transform " + type + " in " + str);
}
if (tt.nextToken() != ')') {
throw new IOException("')' not found in transform " + str);
}
}
}
return t;
}