/// <summary>
/// Makes convex decomposition of the selected polygon if any.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void makeConvexDecompositionButton_Click(object sender, EventArgs e)
{
PolygonEditState polygonState = ShapesScreen.State as PolygonEditState;
if (polygonState != null)
{
List <Polygon> newPolygons = polygonState.MakeConvexDecomposition();
if (newPolygons != null && newPolygons.Count > 0)
{
// remove actual polygon state
RemoveShape(polygonState);
// add new polygons
foreach (Polygon polygon in newPolygons)
{
shapesList.Items.Add(ShapesScreen.AddShape(polygon));
}
// select last added shape
shapesList.SelectedIndex = shapesList.Items.Count - 1;
}
}
ShapesScreen.Invalidate();
}
/// <summary>
/// Makes convex hull of the selected polygon if any.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
private void makeConvexHullButton_Click(object sender, EventArgs e)
{
PolygonEditState polygonState = ShapesScreen.State as PolygonEditState;
if (polygonState != null)
{
polygonState.MakeConvexHull();
}
ShapesScreen.Invalidate();
}
/// <summary>
/// Adds the specified shape to the screen.
/// </summary>
/// <param name="shape">Shape to add</param>
/// <returns>Returns <see cref="ShapeState"/> of the added shape.</returns>
public ShapeState AddShape(Shape shape)
{
ShapeState newState = null;
switch (shape.Type)
{
case Shape.ShapeType.Polygon:
newState = new PolygonEditState((Polygon)shape, this)
{
Color = ColorSettings.GoodColors[goodColorsIndex]
};
State = newState;
break;
case Shape.ShapeType.Circle:
newState = new CircleEditState((Circle)shape, this)
{
Color = ColorSettings.GoodColors[goodColorsIndex]
};
State = newState;
break;
case Shape.ShapeType.Edge:
newState = new EdgeEditState((Edge)shape, this)
{
Color = ColorSettings.GoodColors[goodColorsIndex]
};
State = newState;
break;
}
if (newState != null)
{
if (++goodColorsIndex >= ColorSettings.GoodColors.Length)
{
goodColorsIndex = 0;
}
Shapes.Add(newState);
}
return(newState);
}