public void ConvertCurve(IShapeCurve curve)
{
if (curve is ShapeLine)
{
ShapePoint c1 = new ShapePoint(
(2 * snappedCurve.Points[0].X + snappedCurve.Points[1].X) / 3,
(2 * snappedCurve.Points[0].Y + snappedCurve.Points[1].Y) / 3
);
ShapePoint c2 = new ShapePoint(
(snappedCurve.Points[0].X + 2 * snappedCurve.Points[1].X) / 3,
(snappedCurve.Points[0].Y + 2 * snappedCurve.Points[1].Y) / 3
);
ShapeBezier bezier = new ShapeBezier(snappedCurve.FirstPoint, c1, c2, snappedCurve.LastPoint);
lines[lines.IndexOf(curve)] = bezier;
}
else
{
ShapeLine line = new ShapeLine(snappedCurve.FirstPoint, snappedCurve.LastPoint);
lines[lines.IndexOf(curve)] = line;
}
snappedCurve = null;
}
public bool SnapToHorizontal(PointF pt, float yVal, float snapDistance)
{
bool flag = false;
float num1 = snapDistance;
if (this.IsModified)
{
return(false);
}
for (int index = 0; index < this.points.Length - 1; ++index)
{
float num2 = this.points[index + 1].Y - this.points[index].Y;
if ((double)num2 != 0.0)
{
float num3 = this.points[index + 1].X - this.points[index].X;
float x = this.points[index].X + (yVal - this.points[index].Y) * num3 / num2;
if (ShapeBezier.IsPointOnSegment(x, yVal, this.points[index], this.points[index + 1]) && (double)Math.Abs(x - pt.X) <= (double)num1)
{
this.snappedPoint.Y = yVal;
this.snappedPoint.X = x;
flag = true;
}
}
}
return(flag);
}
private void DrawControlPoints(PaintEventArgs e, ShapeBezier b)
{
//if (!drawGuideLines) return;
RectangleF rect = new RectangleF();
rect.Location = zoom.PtToVisible(b.ControlPoints[1].Location);
rect.Inflate(2, 2);
e.Graphics.DrawLine(PenControlLines,
zoom.PtToVisible(b.ControlPoints[0].Location),
zoom.PtToVisible(b.ControlPoints[1].Location)
);
e.Graphics.FillEllipse(BrushControlLinesPts, rect);
rect.Width = rect.Height = 0;
rect.Location = zoom.PtToVisible(b.ControlPoints[2].Location);
rect.Inflate(2, 2);
e.Graphics.DrawLine(PenControlLines,
zoom.PtToVisible(b.ControlPoints[3].Location),
zoom.PtToVisible(b.ControlPoints[2].Location)
);
e.Graphics.FillEllipse(BrushControlLinesPts, rect);
}
public bool SnapToCurve(PointF pt, float snapDistance)
{
bool flag = false;
PointF pointF = new PointF();
PointF snapPoint = new PointF();
float num = snapDistance * snapDistance;
float dist = 0.0f;
if (this.IsModified)
{
return(false);
}
for (int index = 0; index < this.detailLevel - 1; ++index)
{
if (ShapeBezier.SnapToCurveSegment(ref snapPoint, pt, this.points[index], this.points[index + 1], snapDistance, ref dist))
{
dist = ShapePoint.DistSquared(pt, snapPoint);
if ((double)num >= (double)dist)
{
num = dist;
pointF = snapPoint;
this.snapSegmentNum = index;
flag = true;
}
}
}
if (!flag)
{
return(false);
}
this.snappedPoint = pointF;
return(true);
}
public void AddBezier(PointF from, PointF ctrl1, PointF ctrl2, PointF to)
{
ShapeBezier curve = new ShapeBezier(
new ShapePoint(from),
new ShapePoint(ctrl1),
new ShapePoint(ctrl2),
new ShapePoint(to)
);
shape.Add(curve);
}
public void DeserializeProperties(string propertiesString)
{
string[] tokens = propertiesString.Split(':');
IShapeCurve curve = null;
ShapePoint startPt = new ShapePoint();
ShapePoint endPt = startPt;
for (int i = 1; i < tokens.Length - 1; i++)
{
string[] strpt = tokens[i].Split(',');
endPt.Set(float.Parse(strpt[0], CultureInfo.InvariantCulture), float.Parse(strpt[1], CultureInfo.InvariantCulture));
if (bool.Parse(strpt[2]))
{
// Bezier curve
curve = new ShapeBezier();
curve.ControlPoints[0] = endPt;
//bool b = CultureInfo.CurrentCulture.UseUserOverride;
NumberFormatInfo nfi = CultureInfo.CurrentCulture.NumberFormat;
curve.ControlPoints[1] = new ShapePoint(float.Parse(strpt[3], CultureInfo.InvariantCulture), float.Parse(strpt[4], CultureInfo.InvariantCulture));
curve.ControlPoints[2] = new ShapePoint(float.Parse(strpt[5], CultureInfo.InvariantCulture), float.Parse(strpt[6], CultureInfo.InvariantCulture));
endPt = new ShapePoint();
curve.ControlPoints[3] = endPt;
}
else
{
// Straight Line
curve = new ShapeLine();
curve.ControlPoints[0] = endPt;
endPt = new ShapePoint();
curve.ControlPoints[1] = endPt;
}
this.Add(curve);
}
// Attach the end of the last line to the first point to close the shape
if (curve != null)
{
curve.LastPoint = startPt;
}
}
private void DrawControlPoints(PaintEventArgs e, ShapeBezier b)
{
RectangleF rect = new RectangleF();
rect.Location = this.zoom.PtToVisible(b.ControlPoints[1].Location);
rect.Inflate(2f, 2f);
e.Graphics.DrawLine(this.PenControlLines, this.zoom.PtToVisible(b.ControlPoints[0].Location), this.zoom.PtToVisible(b.ControlPoints[1].Location));
e.Graphics.FillEllipse(this.BrushControlLinesPts, rect);
rect.Width = rect.Height = 0.0f;
rect.Location = this.zoom.PtToVisible(b.ControlPoints[2].Location);
rect.Inflate(2f, 2f);
e.Graphics.DrawLine(this.PenControlLines, this.zoom.PtToVisible(b.ControlPoints[3].Location), this.zoom.PtToVisible(b.ControlPoints[2].Location));
e.Graphics.FillEllipse(this.BrushControlLinesPts, rect);
}
private static bool SnapToCurveSegment(
ref PointF snapPoint,
PointF pt,
ShapePoint from,
ShapePoint to,
float snapDistance,
ref float dist)
{
if (!ShapeBezier.SnapToExtension(ref snapPoint, pt, from, to, snapDistance, ref dist))
{
return(false);
}
return(ShapeBezier.IsPointOnSegment(snapPoint.X, snapPoint.Y, from, to));
}
public void ConvertCurve(IShapeCurve curve)
{
if (curve is ShapeLine)
{
ShapeBezier shapeBezier = new ShapeBezier(this.snappedCurve.FirstPoint, new ShapePoint((float)((2.0 * (double)this.snappedCurve.Points[0].X + (double)this.snappedCurve.Points[1].X) / 3.0), (float)((2.0 * (double)this.snappedCurve.Points[0].Y + (double)this.snappedCurve.Points[1].Y) / 3.0)), new ShapePoint((float)(((double)this.snappedCurve.Points[0].X + 2.0 * (double)this.snappedCurve.Points[1].X) / 3.0), (float)(((double)this.snappedCurve.Points[0].Y + 2.0 * (double)this.snappedCurve.Points[1].Y) / 3.0)), this.snappedCurve.LastPoint);
this.lines[this.lines.IndexOf(curve)] = (IShapeCurve)shapeBezier;
}
else
{
ShapeLine shapeLine = new ShapeLine(this.snappedCurve.FirstPoint, this.snappedCurve.LastPoint);
this.lines[this.lines.IndexOf(curve)] = (IShapeCurve)shapeLine;
}
this.snappedCurve = (IShapeCurve)null;
}
public void InsertPoint(IShapeCurve curve, PointF atPoint)
{
if (curve == null)
{
return;
}
if (curve is ShapeLine)
{
ShapePoint end = curve.LastPoint;
ShapePoint middle = new ShapePoint(atPoint);
ShapeLine newLine = new ShapeLine(middle, end);
curve.LastPoint = middle;
lines.Insert(lines.IndexOf(curve) + 1, newLine);
return;
}
if (curve is ShapeBezier)
{
PointF tg1 = new PointF(), tg2 = new PointF();
ShapePoint end = snappedCurve.LastPoint;
ShapePoint middle = new ShapePoint(snappedPoint);
if (!(curve as ShapeBezier).TangentAt(snappedPoint, ref tg1, ref tg2))
{
return;
}
ShapeBezier newBezier = new ShapeBezier();
newBezier.ControlPoints[0] = middle;
newBezier.ControlPoints[1] = new ShapePoint(tg2);
newBezier.ControlPoints[2] = curve.ControlPoints[2];
newBezier.ControlPoints[3] = curve.LastPoint;
curve.ControlPoints[2] = new ShapePoint(tg1);
curve.ControlPoints[3] = middle;
curve.Update();
newBezier.Update();
lines.Insert(lines.IndexOf(curve) + 1, newBezier);
return;
}
}
public bool AppendBezier(PointF ctrl1, PointF ctrl2, PointF to)
{
ShapePoint pt = shape.GetLastPoint();
if (pt == null)
{
return(false);
}
ShapeBezier curve = new ShapeBezier(
pt,
new ShapePoint(ctrl1),
new ShapePoint(ctrl2),
new ShapePoint(to)
);
shape.Add(curve);
return(true);
}
public bool CloseFigureUsingBezier(PointF ctrl1, PointF ctrl2)
{
ShapePoint first = shape.GetFirstPoint();
ShapePoint last = shape.GetLastPoint();
if ((first == null) || (last == null))
{
return(false);
}
ShapeBezier curve = new ShapeBezier(
last,
new ShapePoint(ctrl1),
new ShapePoint(ctrl2),
first
);
shape.Add(curve);
return(true);
}
public void InsertPoint(IShapeCurve curve, PointF atPoint)
{
if (curve == null)
{
return;
}
if (curve is ShapeLine)
{
ShapePoint lastPoint = curve.LastPoint;
ShapePoint from = new ShapePoint(atPoint);
ShapeLine shapeLine = new ShapeLine(from, lastPoint);
curve.LastPoint = from;
this.lines.Insert(this.lines.IndexOf(curve) + 1, (IShapeCurve)shapeLine);
}
else
{
if (!(curve is ShapeBezier))
{
return;
}
PointF from = new PointF();
PointF to = new PointF();
ShapePoint lastPoint = this.snappedCurve.LastPoint;
ShapePoint shapePoint = new ShapePoint(this.snappedPoint);
if (!(curve as ShapeBezier).TangentAt(this.snappedPoint, ref from, ref to))
{
return;
}
ShapeBezier shapeBezier = new ShapeBezier();
shapeBezier.ControlPoints[0] = shapePoint;
shapeBezier.ControlPoints[1] = new ShapePoint(to);
shapeBezier.ControlPoints[2] = curve.ControlPoints[2];
shapeBezier.ControlPoints[3] = curve.LastPoint;
curve.ControlPoints[2] = new ShapePoint(from);
curve.ControlPoints[3] = shapePoint;
curve.Update();
shapeBezier.Update();
this.lines.Insert(this.lines.IndexOf(curve) + 1, (IShapeCurve)shapeBezier);
}
}
public bool SnapToCurveExtension(PointF pt, float snapDistance)
{
PointF snapPoint1 = new PointF();
PointF snapPoint2 = new PointF();
bool flag = true;
int num = 0;
float dist1 = 0.0f;
float dist2 = 0.0f;
if (!this.ctrl[0].IsModified && !this.ctrl[1].IsModified)
{
num += ShapeBezier.SnapToExtension(ref snapPoint1, pt, this.ctrl[0], this.ctrl[1], snapDistance, ref dist1) ? 1 : 0;
}
if (!this.ctrl[3].IsModified && !this.ctrl[2].IsModified)
{
num += ShapeBezier.SnapToExtension(ref snapPoint2, pt, this.ctrl[3], this.ctrl[2], snapDistance, ref dist2) ? 2 : 0;
}
switch (num)
{
case 1:
this.snappedPoint = snapPoint1;
break;
case 2:
this.snappedPoint = snapPoint2;
break;
case 3:
this.snappedPoint = (double)ShapePoint.DistSquared(pt, snapPoint1) > (double)ShapePoint.DistSquared(pt, snapPoint2) ? snapPoint2 : snapPoint1;
break;
default:
flag = false;
break;
}
return(flag);
}
