public Editor2D(PictureBox editorWindow)
{
EditorWindow = editorWindow;
StatusBar = new StatusBar();
GeometryEngine = new GeometryEngine();
//default Zoom vales
ZoomRatio = .1f;
Zoom = 1;
InitialWindowWidth = EditorWindow.Width;
initialWindowHeight = EditorWindow.Height;
//grid
Grid = new Grid(editorWindow.Width, editorWindow.Height);
Grid.Generate();
// wiring the mouse events
EditorWindow.MouseDown += EditorWindow_MouseDown;
EditorWindow.MouseMove += EditorWindow_MouseMove;
EditorWindow.MouseUp += EditorWindow_MouseUp;
EditorWindow.Paint += EditorWindow_Paint;
EditorWindow.KeyPress += EditorWindow_KeyPress;
EditorWindow.MouseDoubleClick += EditorWindow_MouseDoubleClick;
EditorWindow.MouseWheel += EditorWindow_MouseWheel;
EditorWindow.SizeChanged += EditorWindow_SizeChanged;
}
private void EditorWindow_MouseMove(object sender, MouseEventArgs e)
{
StatusBar.Message($"X: {e.X} , Y: {e.Y}");
if (ActiveCommand != DrawCommands.Noun && clickCount >= 1)
{
//delta_Y = p2.Sub(e.Location);
var offsetPoint = new PointF(offsetX, offsetY).Scale(Zoom);
p2 = (new PointF(e.X, e.Y).Sub(offsetPoint)).Scale(1 / Zoom);
switch (ActiveCommand)
{
case DrawCommands.Line:
#region Line
tempShape = new GLine(p1, p2);
#endregion
break;
case DrawCommands.Circle:
#region Circle
tempShape = new GCircle(p1, p1.Distance(p2));
Debug.WriteLine($"x:{p1.X},Y:{p1.Y},R:{p1.Distance(p2)}");
Debug.WriteLine($"offsetX:{offsetX},OffsetY:{ offsetY}");
#endregion
break;
case DrawCommands.Rectangle:
#region Rectangle
tempShape = new GRectangle(p1, p2);
#endregion
break;
case DrawCommands.PolyLine:
#region PolyLine
tempShape = tempPolyLine;
if (clickCount == 1)
{
if (tempPolyLine == null)
{
tempPolyLine = new GPolyLine();
tempPolyLine.Lines.Add(new GLine(p1, p2));
}
else
{
tempPolyLine.Lines.LastOrDefault().EndPoint = p2;
}
}
else if (clickCount == 2)
{
//check end line position to exit or continue drawing.
var prevLine = tempPolyLine.Lines.LastOrDefault();
tempPolyLine.Lines.Add(new GLine(prevLine.EndPoint, p2));
if (p2.Distance(tempPolyLine.Lines.FirstOrDefault().StartPoint) < Setup.Snap)
{
GeometryEngine.AddShape(tempShape);
clickCount = 0;
tempShape = null;
tempPolyLine = null;
// ActiveCommand = DrawCommands.Noun;
}
else
{
clickCount--;
}
}
#endregion
break;
case DrawCommands.Curve:
#region Curve
if (clickCount == 1)
{
tempShape = new GLine(p1, p2);
}
else if (clickCount == 2)
{
if (tempShape is GCurve)
{
((GCurve)tempShape).Center = p2;
}
else
{
var l = (GLine)tempShape;
tempShape = new GCurve(l.StartPoint, p2, l.EndPoint);
}
}
else if (clickCount == 3)
{
((GCurve)tempShape).Center = p2;
GeometryEngine.AddShape(tempShape);
clickCount = 0;
}
#endregion
break;
case DrawCommands.Parabola:
#region Parabola
if (clickCount == 1)
{
tempShape = new GLine(p1, p2);
}
else if (clickCount == 2)
{
if (tempShape is GParabola)
{
((GParabola)tempShape).Points[2] = p2;
}
else
{
var l = (GLine)tempShape;
tempShape = new GParabola(l.StartPoint, l.EndPoint, p2);
}
}
else if (clickCount == 3)
{
((GParabola)tempShape).Points[2] = p2;
GeometryEngine.AddShape(tempShape);
clickCount = 0;
}
#endregion
break;
case DrawCommands.Clear:
break;
case DrawCommands.Noun:
break;
default:
break;
}
EditorWindow.Invalidate();
}
else if (clickCount == 0)
{
MouseEventArgs mouse = e as MouseEventArgs;
if (mouse.Button == MouseButtons.Left)
{
Point mousePosNow = mouse.Location;
int deltaX = mousePosNow.X - mouseDown.X; // the distance the mouse has been moved since mouse was pressed
int deltaY = mousePosNow.Y - mouseDown.Y;
offsetX = (int)(startx + (deltaX / Zoom)); // calculate new offset of image based on the current zoom factor
offsetY = (int)(starty + (deltaY / Zoom));
EditorWindow.Invalidate();
}
}
}
