private void EditCircle(Shape existingShape, int x, int y)
{
int cx = ((Circle)existingShape).CX, cy = ((Circle)existingShape).CY;
if (buffer.Count == 0)
{
Info.Text = "Click on the circle to change the radius,\n click on the center to move the circle";
DeleteBtn.IsEnabled = true;
ApplyColorBtn.IsEnabled = true;
HandleVertex(cx, cy, 2);
buffer.Add(cx);
buffer.Add(cy);
}
else if (buffer.Count == 2)
{
DeleteBtn.IsEnabled = false;
ApplyColorBtn.IsEnabled = false;
//if clicked on the center -> move the circle
if (x <= cx + 5 && x >= cx - 5 && y <= cy + 5 && y >= cy - 5)
{
Info.Text = "Click somewhere to change the position of the circle";
HandleVertex(cx, cy, 0);
int r = ((Circle)existingShape).R;
existingShape.EditMode = true;
buffer.Add(r);
}
//if clicked elsewhere -> change the radius
else
{
existingShape.Edit(new List <int> {
buffer[0], buffer[1], x, y
}, null, null);
Redraw();
buffer.Clear();
Info.Text = "";
}
}
//new center
else if (buffer.Count == 3)
{
existingShape.Edit(new List <int> {
x, y, x, y + buffer[2]
}, null, null);
Redraw();
buffer.Clear();
Info.Text = "";
}
}
private void EditLine(Shape existingShape, int x, int y)
{
//finish editing
DeleteBtn.IsEnabled = false;
ApplyColorBtn.IsEnabled = false;
if (buffer.Count == 2)
{
existingShape.Edit(new List <int> {
buffer[0], buffer[1], x, y
}, null, null);
Redraw();
buffer.Clear();
Info.Text = "";
}
//start editing
else if (buffer.Count == 0)
{
Info.Text = "Click somewhere to change the position of the vertex";
DeleteBtn.IsEnabled = true;
ApplyColorBtn.IsEnabled = true;
HandleVertex(x, y, 2);
if (x <= existingShape.Points[0] + V_SIZE && x >= existingShape.Points[0] - V_SIZE)
{
buffer.Add(existingShape.Points[2]);
buffer.Add(existingShape.Points[3]);
}
else
{
buffer.Add(existingShape.Points[0]);
buffer.Add(existingShape.Points[1]);
}
}
}
private void ThickSlider_ValueChanged(object sender, RoutedPropertyChangedEventArgs <double> e)
{
Shape edited = CheckEditMode();
int value = (int)((Slider)sender).Value;
if (edited != null)
{
edited.EditMode = false;
buffer.Clear();
Info.Text = "";
edited.Edit(null, value, null);
Redraw();
}
}
private void ApplyColorBtn_Click(object sender, RoutedEventArgs e)
{
Shape edited = CheckEditMode();
List <int> color = GetColor();
DeleteBtn.IsEnabled = false;
ApplyColorBtn.IsEnabled = false;
if (edited != null)
{
edited.EditMode = false;
buffer.Clear();
Info.Text = "";
edited.Edit(null, null, color);
Redraw();
}
}
private void EditPolygon(Shape existingShape, int x, int y)
{
if (buffer.Count == 0)
{
Info.Text = "Choose one vertex to change the vertex' position,\n choose two neighboring vertices to change the edge's position,\n choose three neighboring vertices to change the position of the polygon";
DeleteBtn.IsEnabled = true;
ApplyColorBtn.IsEnabled = true;
HandleVertex(x, y, 2);
buffer.Add(x);
buffer.Add(y);
}
else if (buffer.Count == 2)
{
DeleteBtn.IsEnabled = false;
ApplyColorBtn.IsEnabled = false;
List <int> nb = (existingShape as Polygon).CheckNeighborClick(buffer[0], buffer[1], x, y);
//move vertex
if (nb.Count == 2)
{
(existingShape as Polygon).PrepareNewVertices(nb[0], nb[1], x, y);
existingShape.Edit(existingShape.Points, null, null);
Redraw();
buffer.Clear();
Info.Text = "";
}
//move edge
else if (nb.Count == 4)
{
Info.Text = "Choose the place to change the position of the edge,\n click on a neighboring vertex to move the polygon";
HandleVertex(x, y, 0);
HandleVertex(buffer[0], buffer[1], 0);
existingShape.EditMode = true;
buffer.Add(nb[0]);
buffer.Add(nb[1]);
buffer.Add(nb[2]);
buffer.Add(nb[3]);
}
}
else if (buffer.Count == 6)
{
List <int> nb1 = (existingShape as Polygon).CheckNeighborClick(buffer[2], buffer[3], x, y);
List <int> nb2 = (existingShape as Polygon).CheckNeighborClick(buffer[4], buffer[5], x, y);
//move edge
if (nb1.Count == 2 && nb2.Count == 2)
{
int dx = buffer[4] + (buffer[2] - buffer[4]) / 2;
int dy = buffer[5] + (buffer[3] - buffer[5]) / 2;
dx = x - dx;
dy = y - dy;
(existingShape as Polygon).PrepareNewVertices(buffer[2], buffer[3], buffer[2] + dx, buffer[3] + dy);
(existingShape as Polygon).PrepareNewVertices(buffer[4], buffer[5], buffer[4] + dx, buffer[5] + dy);
existingShape.Edit(existingShape.Points, null, null);
Redraw();
buffer.Clear();
Info.Text = "";
}
//move entire polygon
else
{
Info.Text = "Click somewhere to change the position of the polygon";
HandleVertex(x, y, 0);
int x1 = Math.Max(Math.Max(x, buffer[2]), buffer[4]);
int x2 = Math.Min(Math.Min(x, buffer[2]), buffer[4]);
int y1 = Math.Max(Math.Max(y, buffer[3]), buffer[5]);
int y2 = Math.Min(Math.Min(y, buffer[3]), buffer[5]);
int dx = (x1 - x2) / 2 + x2;
int dy = (y1 - y2) / 2 + y2;
buffer.Add(dx);
buffer.Add(dy);
HandleVertex(dx, dy, 2);
existingShape.EditMode = true;
}
}
else
{
int dx = x - buffer[6];
int dy = y - buffer[7];
for (int i = 0; i < existingShape.Points.Count - 1; i += 2)
{
(existingShape as Polygon).PrepareNewVertices(existingShape.Points[i], existingShape.Points[i + 1], existingShape.Points[i] + dx, existingShape.Points[i + 1] + dy);
}
existingShape.Edit(existingShape.Points, null, null);
Redraw();
buffer.Clear();
Info.Text = "";
}
}
