private void CanvasDrawPolygonEnd(PointF MouseLocate)
{
if (DrawCutter)
{
if (CurrentCutter.Count() > 2)
{
CanvasDrawLine(CurrentCutter.GetPeak(0), MouseLocate, CutterColor);
CutterExists = true;
CurrentCutter.ConvexCheck();
ButtonPolygonDrawEnabled();
}
}
else
{
if (CurrentPolygon.Count() > 2)
{
CanvasDrawLine(CurrentPolygon.GetPeak(0), MouseLocate, PolygonColor);
CurrentPolygon.AddPeak(CurrentPolygon.GetPeak(0));
if (CurrentCutter.IsConvex())
{
Pen PolygonPen = new Pen(ResultColor, 3);
Polygon Result = CurrentCutter.CutPolygon(CurrentPolygon);
Canvas.DrawPolygon(PolygonPen, Result.ToArray());
}
else
{
MessageBox.Show("Отсекатель должен быть выпуклым", "Ошибка", MessageBoxButtons.OK);
}
}
}
}
// Отсечение
private void buttonCut_Click(object sender, EventArgs e)
{
cutter.Finish();
g.DrawLine(pen_cutter, cutter.GetVertex(0), cutter.GetVertex(-1));
if (!cutter.IsConvex())
{
MessageBox.Show("Многоугольник не выпуклый.", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
List <PointF> tmp = cutter.CutSutherlandHodgman(polygon);
if (checkBoxFill.Checked)
{
g.FillPolygon(Brushes.Blue, tmp.ToArray());
}
g.DrawPolygon(pen_highlight, tmp.ToArray());
canvasBase.Refresh();
}