public override void OnLeftMouseButtonDown(OverlayShape item, Point p, TEMouseArgs e)
{
if (!EnsureParseTreeExists())
{
return;
}
Point ptikz = overlay.Rasterizer.RasterizePixelToTikz(p);
p = overlay.Rasterizer.RasterizePixel(p);
if (ContinueWithBigImage(ptikz) == false)
{
return;
}
if (pointcount == 0)
{
//overlay.SetCorrectRaster(overlay.CurEditing, true);
center = ptikz;
// set raster to polar, and such that origin is at center
overlay.Rasterizer.View.IsCartesian = false;
TikzMatrix M = overlay.Rasterizer.View.CoordinateTransform;
M.m[0, 2] = center.X;
M.m[1, 2] = center.Y;
overlay.Rasterizer.View.CoordinateTransform = M;
pointcount = 1;
PreviewPie.center = PreviewArc.center = new Point(p.X, overlay.Height - p.Y);
////if (!overlay.canvas.Children.Contains(PreviewArc))
//// overlay.canvas.Children.Add(PreviewArc);
////if (!overlay.canvas.Children.Contains(PreviewPie))
//// overlay.canvas.Children.Add(PreviewPie);
}
else if (pointcount == 1)
{
p1 = ptikz;
pointcount = 2;
PreviewPie.p1 = PreviewArc.p2 = new Point(p.X, overlay.Height - p.Y);
// compute radius
TikzMatrix M = overlay.Rasterizer.View.CoordinateTransform;
Point ploc = M.Inverse().Transform(p1);
overlay.Rasterizer.View.ForceRadiusTo = (ploc - (new Point(0, 0))).Length;
}
else if (pointcount == 2)
{
// **** create arc / pie ****
overlay.BeginUpdate();
// find next tikzpicture and add
if (AddNewCurAddTo()) //(EnsureCurAddToExists(out lcreated))
{
// Pie?
if (IsPie)
{
// create new coordinate
Tikz_Coord tc = new Parser.Tikz_Coord();
tc.type = overlay.UsePolarCoordinates ? Parser.Tikz_CoordType.Polar : Parser.Tikz_CoordType.Cartesian;
curAddTo.AddChild(tc);
tc.SetAbsPos(center);
curAddTo.AddChild(new Parser.Tikz_Something(" -- "));
}
Tikz_Coord tc1 = new Parser.Tikz_Coord();
if (IsPie)
{
tc1.type = Tikz_CoordType.Polar;
tc1.deco = "++";
}
curAddTo.AddChild(tc1);
tc1.SetAbsPos(p1);
curAddTo.AddChild(new Parser.Tikz_Something(" "));
// create arc
Tikz_Arc ta = new Tikz_Arc();
curAddTo.AddChild(ta);
ta.SetFromPoints(center, ptikz, IsLargeArc);
if (IsPie)
{
curAddTo.AddChild(new Parser.Tikz_Something(" -- cycle"));
}
//tn.UpdateText();
curAddTo.UpdateText();
//tpict.UpdateText();
// draw the added object in the overlay
overlay.AddToDisplayTree(curAddTo);
}
overlay.EndUpdate();
// reset everything
pointcount = 0;
overlay.Rasterizer.View.ForceRadiusTo = -1;
overlay.SetCorrectRaster(overlay.CurEditing, true);
}
//Point p = new Point(e.GetPosition(canvas1).X, Height - e.GetPosition(canvas1).Y);
UpdatePreviewDisplay(p);
}
bool FillNodesOnArc()
{
TikzContainerParseItem pa = curDragged.item.parent;
if (!(curDragged.item is Tikz_XYItem))
{
return(false);
}
Tikz_XYItem cur = curDragged.item as Tikz_XYItem;
nodesOnArc.Clear();
nodesOnArc.Add(cur);
// find all arcs to the right
for (int i = pa.Children.IndexOf(cur) + 1; i < pa.Children.Count; i++)
{
if (pa.Children[i] is Tikz_Arc)
{
nodesOnArc.Add(pa.Children[i] as Tikz_Arc);
}
else if (pa.Children[i].ChangesCurPoint())
{
break;
}
}
// find all arcs to left, including startpoint
if (cur is Tikz_Arc)
{
for (int i = pa.Children.IndexOf(cur) - 1; i >= 0; i--)
{
if (pa.Children[i] is Tikz_Arc)
{
nodesOnArc.Insert(0, pa.Children[i] as Tikz_Arc);
}
else if (pa.Children[i].ChangesCurPoint())
{
if (pa.Children[i] is Tikz_XYItem)
{
nodesOnArc.Insert(0, pa.Children[i] as Tikz_XYItem);
}
break;
}
}
}
// todo: no startpoint present...
if (nodesOnArc.First() is Tikz_Arc)
{
}
// compute radius and center
// in absolute tikz coordinates
Point center, p;
double R;
Tikz_Arc ta;
if (cur is Tikz_Arc)
{
ta = cur as Tikz_Arc;
}
else if (nodesOnArc.Count > 1 && nodesOnArc[1] is Tikz_Arc)
{
ta = nodesOnArc[1] as Tikz_Arc;
}
else
{
return(false);
}
if (!ta.GetArcCenterAbs(out center) || !ta.GetAbsPos(out p))
{
throw new Exception("ArcEditTool: Invalid coordinate discovered.");
}
R = (p - center).Length;
// throw out all items with non-fitting parameters
for (int i = nodesOnArc.Count - 1; i >= 0; i--)
{
if (nodesOnArc[i] is Tikz_Arc)
{
Point cc, pp;
double RR;
if (!(nodesOnArc[i] as Tikz_Arc).GetArcCenterAbs(out cc) || !nodesOnArc[i].GetAbsPos(out pp))
{
throw new Exception("ArcEditTool: Invalid coordinate discovered.");
}
RR = (cc - pp).Length;
if ((cc - center).Length > 1e-3 || Math.Abs(RR - R) > 1e-3)
{
nodesOnArc.RemoveAt(i);
}
}
else // other Tikz_XYItem, namely startpoint
{
Point pp;
if (!nodesOnArc[i].GetAbsPos(out pp))
{
throw new Exception("ArcEditTool: Invalid coordinate discovered.");
}
// check if pooint lies on circle
if (Math.Abs(R - (pp - center).Length) > 1e-3)
{
nodesOnArc.RemoveAt(i);
}
}
}
curDraggedInd = nodesOnArc.IndexOf(cur);
PreviewArc.Center = overlay.TikzToScreen(center, true);
center_tikz = center;
// Fill the PreviewArcs Spokes array
List <double> spokes = new List <double>();
for (int i = 0; i < nodesOnArc.Count; i++)
{
if (nodesOnArc[i] is Tikz_Arc)
{
Tikz_Arc tia = nodesOnArc[i] as Tikz_Arc;
double a1 = tia.phi1.GetInCM() * Math.PI / 180, a2 = tia.phi2.GetInCM() * Math.PI / 180;
//if (!(spokes.Count > 0 && spokes.Last() == a1))
// spokes.Add(a1);
spokes.Add(a2);
//Point pp;
//if (!nodesOnArc[i].GetAbsPos(out pp))
// throw new Exception("ArcEditTool: Invalid coordinate discovered.");
//Vector v = pp - center;
}
else
{
// should go here at most for the first item in list
double a1 = (nodesOnArc[1] as Tikz_Arc).phi1.GetInCM() * Math.PI / 180;
spokes.Add(a1);
}
}
PreviewArc.Spokes = spokes;
return(true);
}
static bool FillItem(TikzContainerParseItem item, CommonTree t, CommonTokenStream tokens)
{
int curToken = t.TokenStartIndex;
if (item is Tikz_ParseTree)
{
curToken = 0; // for root, start at the beginning
}
if (t.Children == null)
{
return(false);
}
foreach (CommonTree childt in t.Children)
{
addSomething(item, tokens, curToken, childt.TokenStartIndex - 1);
switch (childt.Type)
{
case simpletikzParser.IM_PICTURE:
Tikz_Picture tp = new Tikz_Picture();
FillItem(tp, childt, tokens);
item.AddChild(tp);
break;
case simpletikzParser.IM_STARTTAG:
item.starttag = getTokensString(tokens, childt.TokenStartIndex, childt.TokenStopIndex);
break;
case simpletikzParser.IM_ENDTAG:
item.endtag = getTokensString(tokens, childt.TokenStartIndex, childt.TokenStopIndex);
break;
case simpletikzParser.IM_PATH:
Tikz_Path tpath = new Tikz_Path();
FillItem(tpath, childt, tokens);
item.AddChild(tpath);
break;
case simpletikzParser.IM_SCOPE:
Tikz_Scope tscope = new Tikz_Scope();
FillItem(tscope, childt, tokens);
item.AddChild(tscope);
break;
case simpletikzParser.IM_COORD:
Tikz_Coord tc = Tikz_Coord.FromCommonTree(childt, tokens);
tc.text = getTokensString(tokens, childt);
item.AddChild(tc);
break;
case simpletikzParser.IM_ARC:
Tikz_Arc ta = Tikz_Arc.FromCommonTree(childt, tokens);
ta.text = getTokensString(tokens, childt);
item.AddChild(ta);
break;
case simpletikzParser.IM_NODE:
Tikz_Node tn = Tikz_Node.FromCommonTree(childt, tokens);
tn.text = getTokensString(tokens, childt);
item.AddChild(tn);
break;
case simpletikzParser.IM_OPTION_KV:
case simpletikzParser.IM_OPTION_STYLE:
Tikz_Option topt = Tikz_Option.FromCommonTree(childt, tokens);
if (topt == null)
{
break;
}
//topt.text = getTokensString(tokens, childt);
String s = getTokensString(tokens, childt);
topt.text = s;
item.AddChild(topt);
break;
case simpletikzParser.IM_OPTIONS:
//Tikz_Options to = Tikz_Options.FromCommonTree(childt);
Tikz_Options to = new Tikz_Options();
FillItem(to, childt, tokens);
item.AddChild(to);
//to.text = getTokensString(tokens, childt);
//item.AddChild(tn);
if (item.options == null)
{
// determine whether option belongs to the item (e.g. \draw [this belongs to draw] blabla [thisnot])
// i.e., the scope of the options is the whole item's body
// this is hacky
if (item.Children.Count == 1 ||
(item.Children.Count == 2 && (item.Children[0] is Tikz_Something) &&
item.Children[0].ToString().Trim() == ""))
{
item.options = to;
}
}
break;
case simpletikzParser.IM_TIKZSET:
Tikz_Options to2 = new Tikz_Options();
FillItem(to2, childt, tokens);
item.AddChild(to2);
break;
case simpletikzParser.IM_STYLE:
Tikz_Option topt2 = Tikz_Option.FromCommonTree(childt, tokens);
//FillItem(to2, childt, tokens);
topt2.text = getTokensString(tokens, childt);
item.AddChild(topt2);
break;
case simpletikzParser.IM_CONTROLS:
Tikz_Controls tcontrols = new Tikz_Controls();
FillItem(tcontrols, childt, tokens);
item.AddChild(tcontrols);
break;
case simpletikzParser.IM_SIZE:
Tikz_Size tsize = Tikz_Size.FromCommonTree(childt, tokens);
tsize.text = getTokensString(tokens, childt);
item.AddChild(tsize);
//Tikz_Size tsize = new Tikz_Size();
//item.AddChild(tsize);
break;
//case simpletikzParser.ID:
//case simpletikzParser.IM_STRING:
//case simpletikzParser.COMMAND:
//case simpletikzParser.T__57:
// break;
case simpletikzParser.IM_TIKZEDT_CMD:
Tikz_EdtCommand cmd = new Tikz_EdtCommand(getTokensString(tokens, childt));
item.AddChild(cmd);
break;
case simpletikzParser.IM_DONTCARE:
Tikz_Something st = new Tikz_Something(getTokensString(tokens, childt));
item.AddChild(st);
break;
default:
// getting here is an error
throw new Exception(" childt.Type not handled! " + childt.Type.ToString() + " (\"" + getTokensString(tokens, childt) + "\")");
//break;
}
curToken = childt.TokenStopIndex + 1;
}
if (t.TokenStartIndex >= 0) // rule out empty code
{
addSomething(item, tokens, curToken, t.TokenStopIndex);
}
return(true);
}
