// Mouse events
private void canvas_MouseDown(object sender, MouseEventArgs e)
{
_mouse_startX = e.X;
_mouse_startY = e.Y;
if (e.Button == MouseButtons.Left)
{
if (_edit_mode == Edit_mode.ADD_GEOM) //Add new geometry of chosen type in selected point
{
HGeometry new_geometry = null;
if (_addMode == GeometryType.CIRCLE)
{
new_geometry = new HCircle();
setEditiMode(Edit_mode.EDIT_GEOMETRY);
}
else if (_addMode == GeometryType.POINT)
{
new_geometry = new HPoint();
setEditiMode(Edit_mode.EDIT_GEOMETRY);
}
else if (_addMode == GeometryType.LINE)
{
new_geometry = new HLineString();
setEditiMode(Edit_mode.ADD_POINT);
}
else if (_addMode == GeometryType.POLYGON)
{
new_geometry = new HPolygon();
setEditiMode(Edit_mode.ADD_POINT);
}
var p = vp.unproject(new Point(e.X, e.Y));
new_geometry.addPoint(p);
symbol.geometry.Add(new_geometry);
updateExplorerList();
geom_explorer.SelectedIndex = symbol.geometry.Count() - 1;
selectGeometry(symbol.geometry.Count() - 1);
canvas.Refresh();
}
else if (_edit_mode == Edit_mode.ADD_POINT) // Append point to selected geometry
{
symbol.geometry[selected_geometry_idx].points.Add(vp.unproject(new Point(e.X, e.Y)));
canvas.Refresh();
}
else
{
if (selected_geometry_idx != -1)
{
var s_geom = symbol.geometry[selected_geometry_idx];
for (int i = 0; i < s_geom.points.Count(); i++)
{
var p = vp.project(s_geom.points[i]);
if (Math.Abs(p.X - e.X) < 6 && Math.Abs(p.Y - e.Y) < 6)
{
if (e.Button == MouseButtons.Left)
{
selected_point_idx = i;
p = symbol.geometry[selected_geometry_idx].points[selected_point_idx];
point_x_val.Enabled = true;
point_y_val.Enabled = true;
point_x_val.Value = p.X;
point_y_val.Value = p.Y;
canvas.Refresh();
}
}
}
}
}
}
}
// Converts symbol instructions to geometry
public static void parseGeometry(ref Symbol sym)
{
string[] commands = Regex.Replace(sym.instruction, @"\t|\n|\r", "").Split(';'); // sym.instruction.Replace(Environment.NewLine, String.Empty).Split(';');
Point curpos = new Point();
Point newpos = new Point();
Pen curpen = new Pen(Color.Transparent, 1);
List <Point> polygonbuffer = new List <Point>();
bool polygonmode = false;
int transparency = 0;
string color_name = "";
int penWidth = 1;
var line = new HLineString();
foreach (string command in commands)
{
//Console.WriteLine(command);
if (command.Length >= 2)
{
string[] points;
switch (command.Substring(0, 2))
//http://www.informatics-consulting.de/software/plot2emf/p2e_hpgl.htm and http://www.isoplotec.co.jp/HPGL/eHPGL.htm
{
case "SP": //Select pen
color_name = getColorName(command.Substring(2), sym.colref);
break;
case "SW": //Select width - TODO: not part of the standard, is it really line width
penWidth = Convert.ToInt32(command[command.Length - 1].ToString());
break;
case "ST":
transparency = Convert.ToInt32(command.Substring(2));
break;
case "PU": //Move with pen up
points = command.Substring(2).Split(',');
for (int i = 0; i < points.Length / 2; i++)
{
curpos.X = Convert.ToInt32(command.Substring(2).Split(',')[2 * i]);
curpos.Y = Convert.ToInt32(command.Substring(2).Split(',')[2 * i + 1]);
if (polygonmode)
{
polygonbuffer.Add(curpos);
}
else
{
if (line.points.Count() != 0)
{
sym.geometry.Add(new HLineString(line));
line.points.Clear();
}
line.points.Add(curpos);
line.color = color_name;
line.penWidth = penWidth;
line.transparency = transparency;
}
}
break;
case "PD": //Move with pen down
if (command.Length > 2)
{
points = command.Substring(2).Split(',');
for (int i = 0; i < points.Length / 2; i++)
{
newpos.X = Convert.ToInt32(command.Substring(2).Split(',')[2 * i]);
newpos.Y = Convert.ToInt32(command.Substring(2).Split(',')[2 * i + 1]);
curpos = newpos;
if (polygonmode)
{
polygonbuffer.Add(curpos);
}
else
{
line.points.Add(curpos);
}
}
}
else //Weird, but some symbols have just PD without coordinates so I assume it to be a point
{
HPoint dot = new HPoint();
dot.points.Add(curpos);
dot.color = color_name;
dot.transparency = transparency;
dot.penWidth = penWidth;
sym.geometry.Add(dot);
line.points.Clear();
}
break;
case "CI": //CI r [, qd] Draw Circle
int radius = Convert.ToInt32(command.Substring(2));
radius = (int)(radius);
bool filled = false;
if (polygonmode)
{
filled = true;
}
HCircle ci = new HCircle();
ci.points.Add(curpos);
ci.color = color_name;
ci.transparency = transparency;
ci.penWidth = penWidth;
ci.radius = radius;
ci.filled = filled;
sym.geometry.Add(ci);
polygonbuffer.Clear();
line.points.Clear();
break;
case "PM": //PM [n] Polygon mode (HPGL/2)
if (command.Substring(2) == "0")
{
Console.WriteLine(command.Substring(2));
polygonmode = !polygonmode;
if (polygonmode)
{
polygonbuffer.Add(curpos);
if (line.points.Count() != 0)
{
line.points.Clear();
}
}
}
else
{
polygonmode = false;
}
break;
case "FP": //FP Filled Polygon (HPGL/2)
if (polygonbuffer.Count > 0)
{
HPolygon poly = new HPolygon();
poly.points = new List <Point>(polygonbuffer);
poly.color = color_name;
poly.transparency = transparency;
poly.penWidth = penWidth;
sym.geometry.Add(poly);
polygonbuffer.Clear();
}
break;
default:
Console.WriteLine("HP-GL command {0} unknown.", command);
break;
}
}
}
if (line.points.Count() != 0)
{
sym.geometry.Add(new HLineString(line));
line.points.Clear();
}
}