//Определение новых размеров прямоугольника
private Rect GetNewSize(Shape currentFigure, Point currentMousePosition)
{
Rect rect = GraphicElements.GetPosition(currentFigure);
double new_x = rect.X;
double new_y = rect.Y;
double new_width = rect.Width;
double new_height = rect.Height;
double offset_x = currentMousePosition.X - mousePosition.X;
double offset_y = currentMousePosition.Y - mousePosition.Y;
switch (hitType)
{
case HitType.UpperLeft:
new_x += offset_x;
new_y += offset_y;
new_width -= offset_x;
new_height -= offset_y;
break;
case HitType.UpperRight:
new_y += offset_y;
new_width += offset_x;
new_height -= offset_y;
break;
case HitType.LowerRight:
new_width += offset_x;
new_height += offset_y;
break;
case HitType.LowerLeft:
new_x += offset_x;
new_width -= offset_x;
new_height += offset_y;
break;
case HitType.Left:
new_x += offset_x;
new_width -= offset_x;
break;
case HitType.Right:
new_width += offset_x;
break;
case HitType.Bottom:
new_height += offset_y;
break;
case HitType.Top:
new_y += offset_y;
new_height -= offset_y;
break;
}
return(new Rect(new_x, new_y, new_width, new_height));
}
//Опередление положениее перемещаемой границы прямоугольника
HitType BorderCheck(Shape shape, Point currentMousePosition)
{
Point[] corners = GetCornersPosition(shape);
Point LeftTop = corners[0];
Point LeftBottom = corners[1];
Point RightTop = corners[2];
Point RightBottom = corners[3];
double GAP = thickness * 2;
//Определяем границу, местоположение мыши на границе
if (GraphicElements.CheckIntersection(LeftTop, LeftBottom, currentMousePosition, GAP, true))
{
// Left edge.
if (GraphicElements.CheckIntersection(LeftTop, RightTop, currentMousePosition, GAP, true))
{
return(HitType.UpperLeft);
}
if (GraphicElements.CheckIntersection(LeftBottom, RightBottom, currentMousePosition, GAP, true))
{
return(HitType.LowerLeft);
}
return(HitType.Left);
}
if (GraphicElements.CheckIntersection(RightTop, RightBottom, currentMousePosition, GAP, true))
{
// Right edge.
if (GraphicElements.CheckIntersection(LeftTop, RightTop, currentMousePosition, GAP, true))
{
return(HitType.UpperRight);
}
if (GraphicElements.CheckIntersection(LeftBottom, RightBottom, currentMousePosition, GAP, true))
{
return(HitType.LowerRight);
}
return(HitType.Right);
}
if (GraphicElements.CheckIntersection(LeftTop, RightTop, currentMousePosition, GAP, true))
{
return(HitType.Top);
}
if (GraphicElements.CheckIntersection(LeftBottom, RightBottom, currentMousePosition, GAP, true))
{
return(HitType.Bottom);
}
return(HitType.Body);
}
//Опередление точные координаты границ прямоугольника
private Point[] GetCornersPosition(Shape shape)
{
Point [] corners = new Point[4];
double angle = GraphicElements.GetRotationAngle(shape);
Rect rect = GraphicElements.GetPosition(shape);
Point Center = GraphicElements.GetCenter(rect);
//Определяем координаты углов прямоугольника без учёта угла поворота
Point LeftTop = new(rect.X, rect.Y);
Point LeftBottom = new(rect.X, rect.Y + rect.Height);
Point RightTop = new(rect.X + rect.Width, LeftTop.Y);
Point RightBottom = new(rect.X + rect.Width, LeftTop.Y + rect.Height);
RotateTransform rotateTransform = new(angle, Center.X, Center.Y);
//Определяем координаты углов прямоугольника с учётом угла поворота
corners[0] = rotateTransform.Transform(LeftTop);
corners[1] = rotateTransform.Transform(LeftBottom);
corners[2] = rotateTransform.Transform(RightTop);
corners[3] = rotateTransform.Transform(RightBottom);
return(corners);
}
//Обработка действий при движении мыши в рабочей области
private void MouseMoveAction(object sender, MouseEventArgs e)
{
Point currentMousePosition = Mouse.GetPosition(WorkSpace);
Rect rect;
if (selectedAction == ButtonType.NoneB)
{
if (previousMouseState == 1)
{
if (currentFigure is Polyline)
{
graphicElements.MovePolylineNode(currentFigure, currentMousePosition, mousePosition);
}
else
{
foreach (Shape shape in WorkSpace.Children)
{
GraphicElements.Reposition(shape, currentMousePosition.X - mousePosition.X, currentMousePosition.Y - mousePosition.Y);
}
}
mousePosition = currentMousePosition;
}
}
else if (selectedAction == ButtonType.rectB)
{
if (previousMouseState == 1)
{
rect = new Rect(mousePosition.X <= currentMousePosition.X ? mousePosition.X : currentMousePosition.X,
mousePosition.Y <= currentMousePosition.Y ? mousePosition.Y : currentMousePosition.Y,
Math.Abs(currentMousePosition.X - mousePosition.X),
Math.Abs(currentMousePosition.Y - mousePosition.Y));
GraphicElements.Resize(currentFigure, rect);
}
}
else if (selectedAction == ButtonType.rotateB)
{
if (previousMouseState == 1 && currentFigure != null)
{
GraphicElements.Rotate(currentFigure, (mousePosition.X - currentMousePosition.X - mousePosition.Y + currentMousePosition.Y));
mousePosition = currentMousePosition;
}
}
else if (selectedAction == ButtonType.moveB)
{
if (previousMouseState == 1 && currentFigure != null)
{
GraphicElements.Reposition(currentFigure, currentMousePosition.X - mousePosition.X, currentMousePosition.Y - mousePosition.Y);
mousePosition = currentMousePosition;
}
}
else if (selectedAction == ButtonType.scaleB)
{
if (previousMouseState == 1 && currentFigure != null)
{
Rect newRect = GetNewSize(currentFigure, currentMousePosition);
if ((newRect.Width > thickness * 2) && (newRect.Height > thickness * 2))
{
GraphicElements.Resize(currentFigure, newRect);
}
mousePosition = currentMousePosition;
}
}
}
bool polylinestate = false; //Статус добавление точек в линию с изломами
public MainWindow()
{
InitializeComponent();
thickness = Convert.ToDouble(FigureThickness.Text);
graphicElements = new GraphicElements(WorkSpace);
}
//Обработка действий при нажатии на ЛКМ в рабочей области
private void WorkSpace_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
thickness = Convert.ToDouble(FigureThickness.Text);
mousePosition = Mouse.GetPosition(WorkSpace);
Color color = ColorPickerButton.SelectedColor.Value;
SolidColorBrush myBrush = new(color);
IInputElement inputElement = Mouse.DirectlyOver;//Поиск объектов под мышью
if (CreateLineButton.IsChecked == false)
{
if (inputElement.GetType() != typeof(Canvas))
{
currentFigure = (Shape)inputElement;
}
}
if (selectedAction == ButtonType.NoneB)
{
if (inputElement is Polyline && e.ClickCount == 2)
{
graphicElements.InsertPointIntoLine((Shape)inputElement, mousePosition);
}
}
else if (selectedAction == ButtonType.rectB)
{
currentFigure = graphicElements.CreateRectangle(new Rect(mousePosition.X, mousePosition.Y, mousePosition.X, mousePosition.Y), myBrush, Convert.ToInt16(FigureThickness.Text));
}
else if (selectedAction == ButtonType.lineB)
{
if (polylinestate == false)
{
if (inputElement is Polyline)
{
graphicElements.InsertPointIntoLine((Shape)inputElement, mousePosition);
}
else
{
polylinestate = true;
currentFigure = graphicElements.AddLine(mousePosition, myBrush, thickness);
}
}
else
{
if (currentFigure != null)
{
if (e.ClickCount == 2)
{
polylinestate = false;
}
else
{
graphicElements.AddPointToLine(currentFigure, mousePosition);
}
}
}
}
else if (selectedAction == ButtonType.fillB)
{
if (inputElement is not Canvas)
{
GraphicElements.Fill(currentFigure, ColorPickerButton.SelectedColor.Value);
}
}
else if (selectedAction == ButtonType.FillBorderB)
{
if (inputElement is not Canvas)
{
GraphicElements.FillBorder(currentFigure, ColorPickerButton.SelectedColor.Value, thickness);
}
}
else if (selectedAction == ButtonType.deleteB)
{
if (inputElement is not Canvas)
{
graphicElements.DeleteFigure(currentFigure);
}
}
else if (selectedAction == ButtonType.moveB)
{
ClickCount = e.ClickCount;
}
else if (selectedAction == ButtonType.scaleB)
{
if (inputElement is not Canvas)
{
hitType = BorderCheck(currentFigure, mousePosition);
}
}
previousMouseState = 1;
}