public EditorState()
{
_tool = EditorTool.Spiro;
_mode = EditorMode.Create;
_displayKnots = true;
_displayGuides = true;
_snapX = 15.0;
_snapY = 15.0;
_enableSnap = true;
_shape = null;
_hitTreshold = 7;
_hitTresholdSquared = 49;
_hitSetShapes = new HashSet<SpiroShape>();
_hitSetPoints = new HashSet<int>();
_hitListShapes = new ObservableCollection<SpiroShape>();
_hitListPoints = new ObservableCollection<int>();
_isStroked = true;
_isFilled = false;
_isClosed = true;
_isTagged = false;
_pointType = SpiroPointType.G4;
_isCaptured = false;
_snapTreshold = 10.0;
_snapMode = GuideSnapMode.Point | GuideSnapMode.Middle | GuideSnapMode.Intersection | GuideSnapMode.Horizontal | GuideSnapMode.Vertical;
_snapPointRadius = 3.5;
_snapPoint = default(GuidePoint);
_haveSnapPoint = false;
}
private static bool TryToRunSpiro(SpiroShape shape, IBezierContext bc)
{
if (shape == null || bc == null)
{
return(false);
}
try
{
var points = shape.Points.ToArray();
if (shape.IsTagged)
{
return(Spiro.TaggedSpiroCPsToBezier0(points, bc));
}
else
{
return(Spiro.SpiroCPsToBezier0(points, points.Length, shape.IsClosed, bc));
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
Debug.WriteLine(ex.StackTrace);
}
return(false);
}
public EditorState()
{
_tool = EditorTool.Spiro;
_mode = EditorMode.Create;
_displayKnots = true;
_displayGuides = true;
_snapX = 15.0;
_snapY = 15.0;
_enableSnap = true;
_shape = null;
_hitTreshold = 7;
_hitTresholdSquared = 49;
_hitSetShapes = new HashSet <SpiroShape>();
_hitSetPoints = new HashSet <int>();
_hitListShapes = new ObservableCollection <SpiroShape>();
_hitListPoints = new ObservableCollection <int>();
_isStroked = true;
_isFilled = false;
_isClosed = true;
_isTagged = false;
_pointType = SpiroPointType.G4;
_isCaptured = false;
_snapTreshold = 10.0;
_snapMode = GuideSnapMode.Point | GuideSnapMode.Middle | GuideSnapMode.Intersection | GuideSnapMode.Horizontal | GuideSnapMode.Vertical;
_snapPointRadius = 3.5;
_snapPoint = default(GuidePoint);
_haveSnapPoint = false;
}
private void NewPointAt(SpiroShape shape, double x, double y, int index)
{
var point = new SpiroControlPoint();
point.X = x;
point.Y = y;
point.Type = _state.PointType;
shape.Points.Insert(index, point);
}
private void NewPoint(SpiroShape shape, double x, double y)
{
var point = new SpiroControlPoint();
point.X = x;
point.Y = y;
point.Type = _state.PointType;
shape.Points.Add(point);
}
private void SetPointPosition(SpiroShape shape, int index, double x, double y)
{
var old = shape.Points[index];
var point = new SpiroControlPoint();
point.X = x;
point.Y = y;
point.Type = old.Type;
shape.Points[index] = point;
}
private void SetPointType(SpiroShape shape, int index, SpiroPointType type)
{
var old = shape.Points[index];
var point = new SpiroControlPoint();
point.X = old.X;
point.Y = old.Y;
point.Type = type;
shape.Points[index] = point;
}
private void InsertPoint(double x, double y, SpiroShape hitShape, int hitShapePointIndex)
{
// Insert new point.
SpiroShape shape = hitShape;
int index = hitShapePointIndex + 1;
NewPointAt(shape, x, y, index);
RunSpiro(shape);
}
private void RemovePoint(SpiroShape shape, int index)
{
shape.Points.RemoveAt(index);
if (shape.Points.Count == 0)
{
RemoveShape(shape);
}
else
{
RunSpiro(shape);
}
}
private void SetPointPositionDelta(SpiroShape shape, int index, double dx, double dy)
{
var old = shape.Points[index];
double x = old.X + dx;
double y = old.Y + dy;
double sx = _state.EnableSnap && _state.SnapX != 0 ? Snap(x, _state.SnapX) : x;
double sy = _state.EnableSnap && _state.SnapY != 0 ? Snap(y, _state.SnapY) : y;
var point = new SpiroControlPoint();
point.X = sx;
point.Y = sy;
point.Type = old.Type;
shape.Points[index] = point;
}
private void Select(SpiroShape hitShape, int hitShapePointIndex)
{
if (!_state.HitSetShapes.Contains(hitShape))
{
// Select shape.
_state.HitSetShapes.Add(hitShape);
_state.HitListShapes.Add(hitShape);
// Select point.
_state.HitSetPoints.Add(hitShapePointIndex);
_state.HitListPoints.Add(hitShapePointIndex);
}
// Update point type.
if (hitShapePointIndex != -1)
{
_state.PointType = hitShape.Points[hitShapePointIndex].Type;
}
_invalidate();
}
private void RunSpiro(SpiroShape shape)
{
if (shape == null)
{
return;
}
var bc = new PathBezierContext();
var result = TryToRunSpiro(shape, bc);
if (_data.ContainsKey(shape))
{
_data[shape] = result ? bc.ToString() : null;
_knots[shape] = result ? bc.GetKnots() : null;
}
else
{
_data.Add(shape, result ? bc.ToString() : null);
_knots.Add(shape, result ? bc.GetKnots() : null);
}
}
private void Select(SpiroShape hitShape)
{
if (!_state.HitSetShapes.Contains(hitShape))
{
// Select shape.
_state.HitSetShapes.Add(hitShape);
_state.HitListShapes.Add(hitShape);
// Deselect point.
_state.HitSetPoints.Add(-1);
_state.HitListPoints.Add(-1);
}
// Update shape info.
if (hitShape != null)
{
_state.IsStroked = hitShape.IsStroked;
_state.IsFilled = hitShape.IsFilled;
_state.IsClosed = hitShape.IsClosed;
_state.IsTagged = hitShape.IsTagged;
}
_invalidate();
}
private void SetPointPositionDelta(SpiroShape shape, int index, double dx, double dy)
{
var old = shape.Points[index];
double x = old.X + dx;
double y = old.Y + dy;
double sx = _state.EnableSnap && _state.SnapX != 0 ? Snap(x, _state.SnapX) : x;
double sy = _state.EnableSnap && _state.SnapY != 0 ? Snap(y, _state.SnapY) : y;
var point = new SpiroControlPoint();
point.X = sx;
point.Y = sy;
point.Type = old.Type;
shape.Points[index] = point;
}
private void SetPointPosition(SpiroShape shape, int index, double x, double y)
{
var old = shape.Points[index];
var point = new SpiroControlPoint();
point.X = x;
point.Y = y;
point.Type = old.Type;
shape.Points[index] = point;
}
private void Select(SpiroShape hitShape)
{
if (!_state.HitSetShapes.Contains(hitShape))
{
// Select shape.
_state.HitSetShapes.Add(hitShape);
_state.HitListShapes.Add(hitShape);
// Deselect point.
_state.HitSetPoints.Add(-1);
_state.HitListPoints.Add(-1);
}
// Update shape info.
if (hitShape != null)
{
_state.IsStroked = hitShape.IsStroked;
_state.IsFilled = hitShape.IsFilled;
_state.IsClosed = hitShape.IsClosed;
_state.IsTagged = hitShape.IsTagged;
}
_invalidate();
}
private void Select(SpiroShape hitShape, int hitShapePointIndex)
{
if (!_state.HitSetShapes.Contains(hitShape))
{
// Select shape.
_state.HitSetShapes.Add(hitShape);
_state.HitListShapes.Add(hitShape);
// Select point.
_state.HitSetPoints.Add(hitShapePointIndex);
_state.HitListPoints.Add(hitShapePointIndex);
}
// Update point type.
if (hitShapePointIndex != -1)
{
_state.PointType = hitShape.Points[hitShapePointIndex].Type;
}
_invalidate();
}
private void RunSpiro(SpiroShape shape)
{
if (shape == null)
return;
var bc = new PathBezierContext();
var result = TryToRunSpiro(shape, bc);
if (_data.ContainsKey(shape))
{
_data[shape] = result ? bc.ToString() : null;
_knots[shape] = result ? bc.GetKnots() : null;
}
else
{
_data.Add(shape, result ? bc.ToString() : null);
_knots.Add(shape, result ? bc.GetKnots() : null);
}
}
private void RemoveShape(SpiroShape shape)
{
_drawing.Shapes.Remove(shape);
_data.Remove(shape);
_knots.Remove(shape);
}
private static bool HitTestForShape(IList<SpiroShape> shapes, double x, double y, double treshold, out SpiroShape hitShape, out int hitShapePointIndex)
{
for (int i = 0; i < shapes.Count; i++)
{
var bc = new HitTestBezierContext(x, y);
var shape = shapes[i];
int knontIndex;
try
{
if (!TryToRunSpiro(shape, bc))
continue;
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
Debug.WriteLine(ex.StackTrace);
continue;
}
if (bc.Report(out knontIndex) < treshold)
{
hitShape = shape;
hitShapePointIndex = knontIndex;
return true;
}
}
hitShape = null;
hitShapePointIndex = -1;
return false;
}
private void NewPointAt(SpiroShape shape, double x, double y, int index)
{
var point = new SpiroControlPoint();
point.X = x;
point.Y = y;
point.Type = _state.PointType;
shape.Points.Insert(index, point);
}
private void NewPoint(SpiroShape shape, double x, double y)
{
var point = new SpiroControlPoint();
point.X = x;
point.Y = y;
point.Type = _state.PointType;
shape.Points.Add(point);
}
private static bool HitTestForPoint(IList <SpiroShape> shapes, double x, double y, double tresholdSquared, out SpiroShape hitShape, out int hitShapePointIndex)
{
foreach (var shape in shapes)
{
for (int i = 0; i < shape.Points.Count; i++)
{
var point = shape.Points[i];
var distance = DistanceSquared(x, y, point.X, point.Y);
if (distance < tresholdSquared)
{
hitShape = shape;
hitShapePointIndex = i;
return(true);
}
}
}
hitShape = null;
hitShapePointIndex = -1;
return(false);
}
private void SetPointType(SpiroShape shape, int index, SpiroPointType type)
{
var old = shape.Points[index];
var point = new SpiroControlPoint();
point.X = old.X;
point.Y = old.Y;
point.Type = type;
shape.Points[index] = point;
}
private void RemovePoint(SpiroShape shape, int index)
{
shape.Points.RemoveAt(index);
if (shape.Points.Count == 0)
{
RemoveShape(shape);
}
else
{
RunSpiro(shape);
}
}
private static bool HitTestForPoint(IList<SpiroShape> shapes, double x, double y, double tresholdSquared, out SpiroShape hitShape, out int hitShapePointIndex)
{
foreach (var shape in shapes)
{
for (int i = 0; i < shape.Points.Count; i++)
{
var point = shape.Points[i];
var distance = DistanceSquared(x, y, point.X, point.Y);
if (distance < tresholdSquared)
{
hitShape = shape;
hitShapePointIndex = i;
return true;
}
}
}
hitShape = null;
hitShapePointIndex = -1;
return false;
}
private void RemoveShape(SpiroShape shape)
{
_drawing.Shapes.Remove(shape);
_data.Remove(shape);
_knots.Remove(shape);
}
private static bool TryToRunSpiro(SpiroShape shape, IBezierContext bc)
{
if (shape == null || bc == null)
return false;
try
{
var points = shape.Points.ToArray();
if (shape.IsTagged)
return Spiro.TaggedSpiroCPsToBezier0(points, bc);
else
return Spiro.SpiroCPsToBezier0(points, points.Length, shape.IsClosed, bc);
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
Debug.WriteLine(ex.StackTrace);
}
return false;
}
private static bool HitTestForShape(IList <SpiroShape> shapes, double x, double y, double treshold, out SpiroShape hitShape, out int hitShapePointIndex)
{
for (int i = 0; i < shapes.Count; i++)
{
var bc = new HitTestBezierContext(x, y);
var shape = shapes[i];
int knontIndex;
try
{
if (!TryToRunSpiro(shape, bc))
{
continue;
}
}
catch (Exception ex)
{
Debug.WriteLine(ex.Message);
Debug.WriteLine(ex.StackTrace);
continue;
}
if (bc.Report(out knontIndex) < treshold)
{
hitShape = shape;
hitShapePointIndex = knontIndex;
return(true);
}
}
hitShape = null;
hitShapePointIndex = -1;
return(false);
}
public static IList <SpiroShape> ToShapes(string plate)
{
if (string.IsNullOrEmpty(plate))
{
return(null);
}
var shapes = new ObservableCollection <SpiroShape>();
var newLine = Environment.NewLine.ToCharArray();
var separator = new char[] { ' ', '\t' };
var trim = new char[] { '(', ')' };
var options = StringSplitOptions.RemoveEmptyEntries;
var lines = plate.Split(newLine, options).Select(x => x.Trim().Trim(trim).Split(separator, options));
SpiroShape shape = null;
foreach (var line in lines)
{
if (line.Length == 0 || line[0] == "plate")
{
continue;
}
switch (line[0][0])
{
case 'v':
{
if (shape == null)
{
shape = NewShape();
}
if (line.Length == 3)
{
shape.Points.Add(NewPoint(SpiroPointType.Corner, line[1], line[2]));
}
else
{
throw new FormatException();
}
}
break;
case 'o':
{
if (shape == null)
{
shape = NewShape();
}
if (line.Length == 3)
{
shape.Points.Add(NewPoint(SpiroPointType.G4, line[1], line[2]));
}
else
{
throw new FormatException();
}
}
break;
case 'c':
{
if (shape == null)
{
shape = NewShape();
}
if (line.Length == 3)
{
shape.Points.Add(NewPoint(SpiroPointType.G2, line[1], line[2]));
}
else
{
throw new FormatException();
}
}
break;
case '[':
{
if (shape == null)
{
shape = NewShape();
}
if (line.Length == 3)
{
shape.Points.Add(NewPoint(SpiroPointType.Left, line[1], line[2]));
}
else
{
throw new FormatException();
}
}
break;
case ']':
{
if (shape == null)
{
shape = NewShape();
}
if (line.Length == 3)
{
shape.Points.Add(NewPoint(SpiroPointType.Right, line[1], line[2]));
}
else
{
throw new FormatException();
}
}
break;
case 'z':
{
if (shape == null)
{
shape = NewShape();
}
if (line.Length == 1)
{
shape.Points.Add(NewPoint(SpiroPointType.End, "0", "0"));
}
else if (line.Length == 3)
{
shape.Points.Add(NewPoint(SpiroPointType.End, line[1], line[2]));
}
else
{
throw new FormatException();
}
shapes.Add(shape);
shape = null;
}
break;
case '{':
{
if (shape == null)
{
shape = NewShape();
}
if (line.Length == 3)
{
shape.Points.Add(NewPoint(SpiroPointType.OpenContour, line[1], line[2]));
}
else
{
throw new FormatException();
}
}
break;
case '}':
{
if (shape == null)
{
shape = NewShape();
}
if (line.Length == 3)
{
shape.Points.Add(NewPoint(SpiroPointType.EndOpenContour, line[1], line[2]));
}
else
{
throw new FormatException();
}
shapes.Add(shape);
shape = null;
}
break;
default:
throw new FormatException();
}
}
if (shape != null)
{
shape.IsTagged = false;
shapes.Add(shape);
shape = null;
}
return(shapes);
}
private void InsertPoint(double x, double y, SpiroShape hitShape, int hitShapePointIndex)
{
// Insert new point.
SpiroShape shape = hitShape;
int index = hitShapePointIndex + 1;
NewPointAt(shape, x, y, index);
RunSpiro(shape);
}