public override bool HitTest(RealPoint pt, CoordinateSystem cs)
{
double x1 = firstPoint.x;
double y1 = firstPoint.y;
double x2 = secondPoint.x;
double y2 = secondPoint.y;
double x3 = secondPoint.x;
double y3 = firstPoint.y;
if (firstPoint.y > secondPoint.y)
{
x3 = firstPoint.x;
y3 = secondPoint.y;
}
double x0 = pt.x;
double y0 = pt.y;
double a = (x1 - x0) * (y2 - y1) - (x2 - x1) * (y1 - y0);
double b = (x2 - x0) * (y3 - y2) - (x3 - x2) * (y2 - y0);
double c = (x3 - x0) * (y1 - y3) - (x1 - x3) * (y3 - y0);
if ((a > 0 && b > 0 && c > 0) || (a < 0 && b < 0 && c < 0))
{
return(true);
}
return(false);
}
public override bool HitTest(RealPoint pt, CoordinateSystem cs)
{
if (cs.GetDistance(pt.x, pt.y, x, y) < cs.epsilon)
{
return(true);
}
return(false);
}
public override bool HitTest(RealPoint pt, CoordinateSystem cs)
{
if (cs.GetDistance(pt, centre) < radius)
{
return(true);
}
return(false);
}
public RealCircle(RealPoint point1, RealPoint point2, CoordinateSystem cs)
{
this.centre = point1;
circumference = point2;
x = centre.x;
y = centre.y;
radius = cs.GetDistance(centre, circumference);
}
public override bool HitTest(RealPoint pt, CoordinateSystem cs)
{
// 4 < 6 8 > 4 8 6 2 < 4
if (firstPoint.x < pt.x && firstPoint.y > pt.y && secondPoint.x > pt.x && secondPoint.y < pt.y)
{
return(true);
}
return(false);
}
private void AddPolygonAction(object sender, MouseEventArgs e)
{
double x;
double y;
if (RoundingButton.Checked)
{
x = Math.Round(cs1.VisualToRealX(e.X));
y = Math.Round(cs1.VisualToRealY(e.Y));
}
else
{
x = cs1.VisualToRealX(e.X);
y = cs1.VisualToRealY(e.Y);
}
if (creatingLine)
{
if (RoundingButton.Checked)
{
selectedPoint.x = Math.Round(selectedPoint.x);
selectedPoint.y = Math.Round(selectedPoint.y);
}
selectedPoint = new RealPoint(x, y);
int x1 = cs1.RealToVisualX(pointList[0].x);
int y1 = cs1.RealToVisualY(pointList[0].y);
if (cs1.GetDistance(x1, y1, e.X, e.Y) < cs1.radius)
{
creatingLine = false;
pointList.RemoveAt(pointList.Count - 1);
realFigureList.RemoveAt(realFigureList.Count - 1);
}
else
{
pointList.Add(selectedPoint);
realFigureList.Add(selectedPoint);
}
}
else
{
pointList = new List <RealPoint>();
firstPoint = new RealPoint(x, y);
secondPoint = new RealPoint(x, y);
realFigureList.Add(firstPoint);
realFigureList.Add(secondPoint);
pointList.Add(firstPoint);
pointList.Add(secondPoint);
RealPolygon polygon = new RealPolygon(pointList);
realFigureList.Add(polygon);
selectedPoint = secondPoint;
creatingLine = true;
}
}
public bool HitTestLabel(RealPoint clickPoint)
{
if (x + label.offsetX < clickPoint.x &&
y + label.offsetY > clickPoint.y &&
x + label.offsetX + label.width > clickPoint.x &&
y + label.offsetY - label.height < clickPoint.y)
{
return(true);
}
return(false);
}
public override bool HitTest(RealPoint pt, CoordinateSystem cs)
{
if (firstPoint.x < pt.x && pt.x < secondPoint.x && firstPoint.y > pt.y && pt.y > secondPoint.y ||
secondPoint.x < pt.x && pt.x < firstPoint.x && secondPoint.y > pt.y && pt.y > firstPoint.y ||
firstPoint.x > pt.x && pt.x > secondPoint.x && firstPoint.y > pt.y && pt.y > secondPoint.y ||
secondPoint.x > pt.x && pt.x > firstPoint.x && secondPoint.y > pt.y && pt.y > firstPoint.y)
{
return(true);
}
return(false);
}
private RealFigure SelectFigure(MouseEventArgs e)
{
foreach (RealFigure figure in realFigureList)
{
double mouseX = cs1.VisualToRealX(e.X);
double mouseY = cs1.VisualToRealY(e.Y);
clickPoint = new RealPoint(mouseX, mouseY);
if (figure.HitTest(clickPoint, cs1))
{
return(figure);
}
}
return(null);
}
private void SelectLabel(MouseEventArgs e) // top left --> center // change this code
{
foreach (RealFigure figure in realFigureList)
{
if (figure is RealPoint)
{
RealPoint point = (RealPoint)figure;
double mouseX = cs1.VisualToRealX(e.X);
double mouseY = cs1.VisualToRealY(e.Y);
clickPoint = new RealPoint(mouseX, mouseY);
if (point.HitTestLabel(clickPoint))
{
selectedLabel = point.label;
}
}
}
}
public Form1()
{
InitializeComponent();
// create Coordinate System
int unitInterval = 30;
int x0 = pictureBox1.Width / 2;
int y0 = pictureBox1.Height / 2;
int w = pictureBox1.Width;
int h = pictureBox1.Height;
cs1 = new CoordinateSystem(unitInterval, x0, y0, w, h);
firstPoint = null;
secondPoint = null;
creatingLine = false;
realFigureList = new List <RealFigure>();
selectedPoint = null;
selectedLabel = null;
}
public override bool HitTest(RealPoint pt, CoordinateSystem cs)
{
double x = pt.x;
double y = pt.y;
int npol = vertices.Count;
int j = npol - 1;
bool c = false;
for (int i = 0; i < npol; i++)
{
if ((((vertices[i].y <= y) && (y < vertices[j].y)) || ((vertices[j].y <= y) && (y < vertices[i].y))) &&
(x > (vertices[j].x - vertices[i].x) * (y - vertices[i].y) / (vertices[j].y - vertices[i].y) + vertices[i].x))
{
c = !c;
}
j = i;
}
return(c);
}
public override bool HitTest(RealPoint pt, CoordinateSystem cs)
{
double x0 = pt.x;
double y0 = pt.y;
double x1 = firstPoint.x;
double y1 = firstPoint.y;
double x2 = secondPoint.x;
double y2 = secondPoint.y;
if (Math.Abs((x2 - x0) / (x2 - x1) - (y2 - y0) / (y2 - y1)) < 0.1 &&
(x1 - x0) * (x2 - x0) < 0 && (y1 - y0) * (y2 - y0) < 0
)
{
return(true);
}
return(false);
}
private void AddIsoscelesAction(object sender, MouseEventArgs e)
{
double x;
double y;
if (RoundingButton.Checked)
{
x = Math.Round(cs1.VisualToRealX(e.X));
y = Math.Round(cs1.VisualToRealY(e.Y));
}
else
{
x = cs1.VisualToRealX(e.X);
y = cs1.VisualToRealY(e.Y);
}
if (creatingLine)
{
if (RoundingButton.Checked)
{
selectedPoint.x = Math.Round(selectedPoint.x);
selectedPoint.y = Math.Round(selectedPoint.y);
}
selectedPoint = null;
creatingLine = false;
}
else
{
firstPoint = new RealPoint(x, y);
realFigureList.Add(firstPoint);
secondPoint = new RealPoint(x, y);
realFigureList.Add(secondPoint);
RealIsoscelesTriangle rt = new RealIsoscelesTriangle(firstPoint, secondPoint);
realFigureList.Add(rt);
selectedPoint = secondPoint;
creatingLine = true;
}
}
public RealRectangle(RealPoint first, RealPoint second)
{
this.firstPoint = first;
this.secondPoint = second;
}
public RealSegment(RealPoint first, RealPoint second)
{
this.firstPoint = first;
this.secondPoint = second;
}
public double GetDistance(RealPoint p1, RealPoint p2)
{
return(GetDistance(p1.x, p1.y, p2.x, p2.y));
}
public RealIntersect(RealSegment ab, RealSegment cd)
{
this.ab = ab;
this.cd = cd;
intersectPoint = new RealPoint(0, 0);
}
public virtual bool HitTest(RealPoint pt, CoordinateSystem cs)
{
return(false);
}
public RealIsoscelesTriangle(RealPoint first, RealPoint second)
{
this.firstPoint = first;
this.secondPoint = second;
}
