/// <summary>
/// Search button click handler
/// Finds and marks node if found
/// </summary>
private void btnSearch_Click(object sender, EventArgs e)
{
activePictureBox.Invalidate();
try {
int value = Convert.ToInt32(tbSearch.Text);
if (value > 9999 || value < -999)
{
throw new OverflowException("Please enter number between [-999;9999].");
}
Node ptrTemp = null;
ptrTemp = (from node in Node.Search(activeRoot) where node.value == value select node).FirstOrDefault();
if (ptrTemp == null)
{
MessageBox.Show("Entered value does not exist!", "Search Result");
}
else
{
// SPlay
if (activeRoot == spl_root)
{
activeRoot = Splay_Tree.Splay(activeRoot, value);
spl_root = activeRoot;
tbSearch.Text = string.Empty;
return;
}
else
{
// Camera Focus
minimap_x = (ptrTemp.x / 10) - 97 / 2;
minimap_y = (ptrTemp.y / 10) - 51 / 2 + CRadius;
}
this.activePictureBox.Location = new Point(minimap_x * -10, minimap_y * -10 + CRadius);
// Marking found node
using (var graphics = activePictureBox.CreateGraphics()) {
activePictureBox.Update();
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.DrawEllipse(new Pen(Color.Red, 3), ptrTemp.x, ptrTemp.y, CDiameter, CDiameter);
}
pbMinimap.Invalidate();
}
}
catch (OverflowException ex) {
MessageBox.Show(ex.Message, ex.GetType().Name);
}
catch (FormatException) { }
tbSearch.Text = string.Empty;
}
/// <summary>
/// Insert button click handler
/// Inserts a value into chosen tree
/// </summary>
private void btnInsert_Click(object sender, EventArgs e)
{
try {
int value = Convert.ToInt32(tbInsert.Text);
if (value > 9999 || value < -999)
{
throw new OverflowException("Please enter number between [-999;9999].");
}
switch (this.activeTab)
{
case Tab.BST:
if (this.total_nodes > 35)
{
MessageBox.Show("Node limit is set to 35!", "Warning");
return;
}
activeRoot = Binary_Search_Tree.Insert(activeRoot, value);
bst_root = activeRoot;
break;
case Tab.AVL:
if (this.total_nodes > 60)
{
MessageBox.Show("Node limit is set to 60!", "Warning");
return;
}
activeRoot = AVL_Tree.Insert(activeRoot, value);
avl_root = activeRoot;
break;
case Tab.RBT: break;
case Tab.SPL:
if (this.total_nodes > 35)
{
MessageBox.Show("Node limit is set to 35!", "Warning");
return;
}
activeRoot = Splay_Tree.Insert(activeRoot, value);
spl_root = activeRoot;
break;
}
activePictureBox.Invalidate();
}
catch (OverflowException ex) {
MessageBox.Show(ex.Message, ex.GetType().Name);
}
catch (FormatException) { }
tbInsert.Text = string.Empty;
}
