VerticesMode.cs

#region ================== Copyright (c) 2007 Pascal vd Heiden

/*
 * Copyright (c) 2007 Pascal vd Heiden, www.codeimp.com
 * This program is released under GNU General Public License
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 */

#endregion

#region ================== Namespaces

using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
using CodeImp.DoomBuilder.BuilderModes.Interface;
using CodeImp.DoomBuilder.Windows;
using CodeImp.DoomBuilder.Map;
using CodeImp.DoomBuilder.Rendering;
using CodeImp.DoomBuilder.Geometry;
using CodeImp.DoomBuilder.Editing;
using CodeImp.DoomBuilder.Actions;
using System.Drawing;

#endregion

namespace CodeImp.DoomBuilder.BuilderModes
{
	[EditMode(DisplayName = "Vertices Mode",
			  SwitchAction = "verticesmode",	// Action name used to switch to this mode
			  ButtonImage = "VerticesMode.png",	// Image resource name for the button
			  ButtonOrder = int.MinValue,	// Position of the button (lower is more to the left)
			  ButtonGroup = "000_editing",
			  UseByDefault = true,
			  SafeStartMode = true)]

	public class VerticesMode : BaseClassicMode
	{
		#region ================== Constants

		#endregion

		#region ================== Variables

		// Highlighted item
		private Vertex highlighted;
		private Vector2D insertpreview = new Vector2D(float.NaN, float.NaN); //mxd

		// Interface
		new private bool editpressed;

		// The blockmap makes is used to make finding lines faster
		BlockMap<BlockEntry> blockmap;

		// Vertices that will be edited
		ICollection<Vertex> editvertices;

		// Autosave
		private bool allowautosave;

		#endregion

		#region ================== Properties

		public override object HighlightedObject { get { return highlighted; } }

		public override bool AlwaysShowVertices { get { return true;  } }

		#endregion

		#region ================== Constructor / Disposer

		#endregion

		#region ================== Methods

		/// <summary>
		/// Create a blockmap containing linedefs. This is used to speed up determining the closest line
		/// to the mouse cursor
		/// </summary>
		private void CreateBlockmap()
		{
			RectangleF area = MapSet.CreateArea(General.Map.Map.Vertices);
			blockmap = new BlockMap<BlockEntry>(area);
			blockmap.AddLinedefsSet(General.Map.Map.Linedefs);
		}

		public override void OnHelp()
		{
			General.ShowHelp("e_vertices.html");
		}

		// Cancel mode
		public override void OnCancel()
		{
			base.OnCancel();
			
			// Return to this mode
			General.Editing.ChangeMode(new VerticesMode());
		}

		// Mode engages
		public override void OnEngage()
		{
			base.OnEngage();
			renderer.SetPresentation(Presentation.Standard);

			// Add toolbar buttons
			if(General.Map.UDMF) 
			{
				General.Interface.BeginToolbarUpdate(); //mxd
				General.Interface.AddButton(BuilderPlug.Me.MenusForm.CopyProperties);
				General.Interface.AddButton(BuilderPlug.Me.MenusForm.PasteProperties);
				General.Interface.AddButton(BuilderPlug.Me.MenusForm.PastePropertiesOptions); //mxd
				General.Interface.AddButton(BuilderPlug.Me.MenusForm.TextureOffsetLock, ToolbarSection.Geometry); //mxd
				General.Interface.AddButton(BuilderPlug.Me.MenusForm.TextureOffset3DFloorLock, ToolbarSection.Geometry);
				General.Interface.EndToolbarUpdate(); //mxd
			}

			// Create the blockmap
			CreateBlockmap();

			// Convert geometry selection to vertices only
			General.Map.Map.ConvertSelection(SelectionType.Vertices);
			UpdateSelectionInfo(); //mxd

			// By default we allow autosave
			allowautosave = true;
		}

		// Mode disengages
		public override void OnDisengage()
		{
			base.OnDisengage();

			// Remove toolbar buttons
			General.Interface.BeginToolbarUpdate();
			General.Interface.RemoveButton(BuilderPlug.Me.MenusForm.CopyProperties);
			General.Interface.RemoveButton(BuilderPlug.Me.MenusForm.PasteProperties);
			General.Interface.RemoveButton(BuilderPlug.Me.MenusForm.PastePropertiesOptions); //mxd
			General.Interface.RemoveButton(BuilderPlug.Me.MenusForm.TextureOffsetLock); //mxd
			General.Interface.RemoveButton(BuilderPlug.Me.MenusForm.TextureOffset3DFloorLock);
			General.Interface.EndToolbarUpdate();

			// Going to EditSelectionMode?
			EditSelectionMode mode = General.Editing.NewMode as EditSelectionMode;
			if(mode != null)
			{
				// Not pasting anything?
				if(!mode.Pasting)
				{
					// No selection made? But we have a highlight!
					if((General.Map.Map.GetSelectedVertices(true).Count == 0) && (highlighted != null))
					{
						// Make the highlight the selection
						highlighted.Selected = true;
					}
				}
			}

			// Hide highlight info
			General.Interface.HideInfo();
		}

		// This redraws the display
		public override void OnRedrawDisplay()
		{
			renderer.RedrawSurface();

			// Render lines and vertices
			if(renderer.StartPlotter(true))
			{
				renderer.PlotLinedefSet(General.Map.Map.Linedefs);
				renderer.PlotVerticesSet(General.Map.Map.Vertices);
				if((highlighted != null) && !highlighted.IsDisposed)
					renderer.PlotVertex(highlighted, ColorCollection.HIGHLIGHT);
				renderer.Finish();
			}

			// Render things
			if(renderer.StartThings(true))
			{
				renderer.RenderThingSet(General.Map.ThingsFilter.HiddenThings, General.Settings.HiddenThingsAlpha);
				renderer.RenderThingSet(General.Map.ThingsFilter.VisibleThings, General.Settings.ActiveThingsAlpha);
				renderer.RenderSRB2Extras();
				renderer.Finish();
			}

			// Render selection
			if(selecting && renderer.StartOverlay(true)) 
			{
				RenderMultiSelection();
				renderer.Finish();