private void Parse()
{
var parser = new SvgPathParser(_raw);
parser.Reset();
_parsed = new FastList <SvgCommand>();
while (!parser.Eof)
{
var command = new SvgCommand();
_parsed.Add(command);
command.Cmd = parser.GetString();
switch (command.Cmd)
{
//
// Moving
//
case "M": // absolute moveto
command.Numbers = new FastList <float>();
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
break;
case "m": // relative moveto
command.Numbers = new FastList <float>();
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
break;
//
// Closing
//
case "Z":
case "z":
break;
//
// Lines
//
case "L": // absolute lineTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "l": // relative lineTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "V": // absolute verticalTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "v": // relative verticalTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "H": // absolute horizontalTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "h": // relative horizontalTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
//
// cubic bezier curves
//
case "C": // absolute cubicTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "c": // relative cubicTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "S": // absolute shorthand cubicTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "s": // relative shorthand cubicTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
//
// quadratic bezier curves
//
case "Q": // absolute quadraticTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "q": // relative quadraticTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "T": // absolute shorthand quadraticTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "t": // relative shorthand quadraticTo
command.Numbers = new FastList <float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
}
}
_raw = null; // not needed anymore.
}
private void ParseCommand(float cx, float cy, IPathCanvas canvas, SvgCommand cmd)
{
bool canContinue; // reusable flag for shorthand curves
int i;
switch (cmd.Cmd)
{
//
// Moving
//
case "M": // absolute moveto
_currentX = (cx + cmd.Numbers[0] * _xScale);
_currentY = (cy + cmd.Numbers[1] * _yScale);
canvas.MoveTo(_currentX, _currentY);
break;
case "m": // relative moveto
_currentX += (cmd.Numbers[0] * _xScale);
_currentY += (cmd.Numbers[1] * _yScale);
canvas.MoveTo(_currentX, _currentY);
break;
//
// Closing
//
case "Z":
case "z":
canvas.ClosePath();
break;
//
// Lines
//
case "L": // absolute lineTo
i = 0;
while (i < cmd.Numbers.Count)
{
_currentX = (cx + cmd.Numbers[i++] * _xScale);
_currentY = (cy + cmd.Numbers[i++] * _yScale);
canvas.LineTo(_currentX, _currentY);
}
break;
case "l": // relative lineTo
i = 0;
while (i < cmd.Numbers.Count)
{
_currentX += (cmd.Numbers[i++] * _xScale);
_currentY += (cmd.Numbers[i++] * _yScale);
canvas.LineTo(_currentX, _currentY);
}
break;
case "V": // absolute verticalTo
i = 0;
while (i < cmd.Numbers.Count)
{
_currentY = (cy + cmd.Numbers[i++] * _yScale);
canvas.LineTo(_currentX, _currentY);
}
break;
case "v": // relative verticalTo
i = 0;
while (i < cmd.Numbers.Count)
{
_currentY += (cmd.Numbers[i++] * _yScale);
canvas.LineTo(_currentX, _currentY);
}
break;
case "H": // absolute horizontalTo
i = 0;
while (i < cmd.Numbers.Count)
{
_currentX = (cx + cmd.Numbers[i++] * _xScale);
canvas.LineTo(_currentX, _currentY);
}
break;
case "h": // relative horizontalTo
i = 0;
while (i < cmd.Numbers.Count)
{
_currentX += (cmd.Numbers[i++] * _xScale);
canvas.LineTo(_currentX, _currentY);
}
break;
//
// cubic bezier curves
//
case "C": // absolute cubicTo
i = 0;
while (i < cmd.Numbers.Count)
{
float x1 = (cx + cmd.Numbers[i++] * _xScale);
float y1 = (cy + cmd.Numbers[i++] * _yScale);
float x2 = (cx + cmd.Numbers[i++] * _xScale);
float y2 = (cy + cmd.Numbers[i++] * _yScale);
float x3 = (cx + cmd.Numbers[i++] * _xScale);
float y3 = (cy + cmd.Numbers[i++] * _yScale);
_lastControlX = x2;
_lastControlY = y2;
_currentX = x3;
_currentY = y3;
canvas.BezierCurveTo(x1, y1, x2, y2, x3, y3);
}
break;
case "c": // relative cubicTo
i = 0;
while (i < cmd.Numbers.Count)
{
float x1 = (_currentX + cmd.Numbers[i++] * _xScale);
float y1 = (_currentY + cmd.Numbers[i++] * _yScale);
float x2 = (_currentX + cmd.Numbers[i++] * _xScale);
float y2 = (_currentY + cmd.Numbers[i++] * _yScale);
float x3 = (_currentX + cmd.Numbers[i++] * _xScale);
float y3 = (_currentY + cmd.Numbers[i++] * _yScale);
_lastControlX = x2;
_lastControlY = y2;
_currentX = x3;
_currentY = y3;
canvas.BezierCurveTo(x1, y1, x2, y2, x3, y3);
}
break;
case "S": // absolute shorthand cubicTo
i = 0;
while (i < cmd.Numbers.Count)
{
float x1 = (cx + cmd.Numbers[i++] * _xScale);
float y1 = (cy + cmd.Numbers[i++] * _yScale);
canContinue = _lastCmd == "c" || _lastCmd == "C" || _lastCmd == "S" || _lastCmd == "s";
float x2 = canContinue
? _currentX + (_currentX - _lastControlX)
: _currentX;
float y2 = canContinue
? _currentY + (_currentY - _lastControlY)
: _currentY;
float x3 = (cx + cmd.Numbers[i++] * _xScale);
float y3 = (cy + cmd.Numbers[i++] * _yScale);
_lastControlX = x2;
_lastControlY = y2;
_currentX = x3;
_currentY = y3;
canvas.BezierCurveTo(x1, y1, x2, y2, x3, y3);
}
break;
case "s": // relative shorthand cubicTo
i = 0;
while (i < cmd.Numbers.Count)
{
float x1 = (_currentX + cmd.Numbers[i++] * _xScale);
float y1 = (_currentY + cmd.Numbers[i++] * _yScale);
canContinue = _lastCmd == "c" || _lastCmd == "C" || _lastCmd == "S" || _lastCmd == "s";
float x2 = canContinue
? _currentX + (_currentX - _lastControlX)
: _currentX;
float y2 = canContinue
? _currentY + (_currentY - _lastControlY)
: _currentY;
float x3 = (_currentX + cmd.Numbers[i++] * _xScale);
float y3 = (_currentY + cmd.Numbers[i++] * _yScale);
_lastControlX = x2;
_lastControlY = y2;
_currentX = x3;
_currentY = y3;
canvas.BezierCurveTo(x1, y1, x2, y2, x3, y3);
}
break;
//
// quadratic bezier curves
//
case "Q": // absolute quadraticTo
i = 0;
while (i < cmd.Numbers.Count)
{
float x1 = (cx + cmd.Numbers[i++] * _xScale);
float y1 = (cy + cmd.Numbers[i++] * _yScale);
float x2 = (cx + cmd.Numbers[i++] * _xScale);
float y2 = (cy + cmd.Numbers[i++] * _yScale);
_lastControlX = x1;
_lastControlY = y1;
_currentX = x2;
_currentY = y2;
canvas.QuadraticCurveTo(x1, y1, x2, y2);
}
break;
case "q": // relative quadraticTo
i = 0;
while (i < cmd.Numbers.Count)
{
float x1 = (_currentX + cmd.Numbers[i++] * _xScale);
float y1 = (_currentY + cmd.Numbers[i++] * _yScale);
float x2 = (_currentX + cmd.Numbers[i++] * _xScale);
float y2 = (_currentY + cmd.Numbers[i++] * _yScale);
_lastControlX = x1;
_lastControlY = y1;
_currentX = x2;
_currentY = y2;
canvas.QuadraticCurveTo(x1, y1, x2, y2);
}
break;
case "T": // absolute shorthand quadraticTo
i = 0;
while (i < cmd.Numbers.Count)
{
float x1 = (cx + cmd.Numbers[i++] * _xScale);
float y1 = (cy + cmd.Numbers[i++] * _yScale);
canContinue = _lastCmd == "q" || _lastCmd == "Q" || _lastCmd == "t" || _lastCmd == "T";
float cpx = canContinue
? _currentX + (_currentX - _lastControlX)
: _currentX;
float cpy = canContinue
? _currentY + (_currentY - _lastControlY)
: _currentY;
_currentX = x1;
_currentY = y1;
_lastControlX = cpx;
_lastControlY = cpy;
canvas.QuadraticCurveTo(cpx, cpy, x1, y1);
}
break;
case "t": // relative shorthand quadraticTo
i = 0;
while (i < cmd.Numbers.Count)
{
// TODO: buggy/incomplete
float x1 = (_currentX + cmd.Numbers[i++] * _xScale);
float y1 = (_currentY + cmd.Numbers[i++] * _yScale);
canContinue = _lastCmd == "q" || _lastCmd == "Q" || _lastCmd == "t" || _lastCmd == "T";
float cpx = canContinue
? _currentX + (_currentX - _lastControlX)
: _currentX;
float cpy = canContinue
? _currentY + (_currentY - _lastControlY)
: _currentY;
_lastControlX = cpx;
_lastControlY = cpy;
canvas.QuadraticCurveTo(cpx, cpy, x1, y1);
}
break;
}
_lastCmd = cmd.Cmd;
}
private void Parse()
{
var parser = new SvgPathParser(_raw);
parser.Reset();
_parsed = new FastList<SvgCommand>();
while (!parser.Eof)
{
var command = new SvgCommand();
_parsed.Add(command);
command.Cmd = parser.GetString();
switch (command.Cmd)
{
//
// Moving
//
case "M": // absolute moveto
command.Numbers = new FastList<float>();
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
break;
case "m": // relative moveto
command.Numbers = new FastList<float>();
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
break;
//
// Closing
//
case "Z":
case "z":
break;
//
// Lines
//
case "L": // absolute lineTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "l": // relative lineTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "V": // absolute verticalTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "v": // relative verticalTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "H": // absolute horizontalTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "h": // relative horizontalTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
//
// cubic bezier curves
//
case "C": // absolute cubicTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "c": // relative cubicTo
command.Numbers = new FastList<float>();
do {
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "S": // absolute shorthand cubicTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "s": // relative shorthand cubicTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
//
// quadratic bezier curves
//
case "Q": // absolute quadraticTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "q": // relative quadraticTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "T": // absolute shorthand quadraticTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
case "t": // relative shorthand quadraticTo
command.Numbers = new FastList<float>();
do
{
command.Numbers.Add(parser.GetNumber());
command.Numbers.Add(parser.GetNumber());
} while (parser.CurrentTokenIsNumber);
break;
}
}
_raw = null; // not needed anymore.
}
