Increased performance when creating new map geometry (for example, when applying changes made by "Draw Line", "Draw Rectangle" etc. actions).

Source/Core/Actions/Action.cs

@@ -130,15 +130,14 @@ namespace CodeImp.DoomBuilder.Actions
 		public static string GetShortcutKeyDesc(int key)
 		{
 			KeysConverter conv = new KeysConverter();
-			int ctrl, button;
 			string ctrlprefix = "";
 			
 			// When key is 0, then return an empty string
 			if(key == 0) return "";
 
 			// Split the key in Control and Button
-			ctrl = key & ((int)Keys.Control | (int)Keys.Shift | (int)Keys.Alt);
-			button = key & ~((int)Keys.Control | (int)Keys.Shift | (int)Keys.Alt);
+			int ctrl = key & ((int)Keys.Control | (int)Keys.Shift | (int)Keys.Alt);
+			int button = key & ~((int)Keys.Control | (int)Keys.Shift | (int)Keys.Alt);
 
 			// When the button is a control key, then remove the control itsself
 			if((button == (int)Keys.ControlKey) ||

Source/Core/General/General.cs

@@ -1540,9 +1540,10 @@ namespace CodeImp.DoomBuilder
 		// This outputs log information
 		public static void WriteLogLine(string line)
 		{
+#if DEBUG
 			// Output to console
 			Console.WriteLine(line);
-			
+#endif
 			// Write to log file
 			try { File.AppendAllText(logfile, line + Environment.NewLine); }
 			catch(Exception) { }
@@ -1551,8 +1552,10 @@ namespace CodeImp.DoomBuilder
 		// This outputs log information
 		public static void WriteLog(string text)
 		{
+#if DEBUG
 			// Output to console
 			Console.Write(text);
+#endif
 
 			// Write to log file
 			try { File.AppendAllText(logfile, text); }

Source/Core/Geometry/Line2D.cs

@@ -125,7 +125,8 @@ namespace CodeImp.DoomBuilder.Geometry
 				u_ray = ((v2.x - v1.x) * (v1.y - y3) - (v2.y - v1.y) * (v1.x - x3)) / div;
 
 				// Return if intersecting
-				return (u_ray >= 0.0f) && (u_ray <= 1.0f) && (u_line >= 0.0f) && (u_line <= 1.0f);
+				if (u_ray <= 0.0f || u_ray >= 1.0f || u_line <= 0.0f || u_line >= 1.0f) return false; //mxd
+				return true;
 			}
 			else
 			{

Source/Core/Geometry/Tools.cs

@@ -910,17 +910,25 @@ namespace CodeImp.DoomBuilder.Geometry
 						// Check if any other lines intersect this line
 						List<float> intersections = new List<float>();
 						Line2D measureline = ld.Line;
-						foreach(Linedef ld2 in map.Linedefs)
-						{
-							// Intersecting?
-							// We only keep the unit length from the start of the line and
-							// do the real splitting later, when all intersections are known
+						Dictionary<Linedef, bool> processed = new Dictionary<Linedef, bool>(); //mxd
+
+						//mxd
+						foreach (Sector s in map.Sectors) {
+							//line intersects with sector's bounding box?
+							if((MapSet.GetCSFieldBits(measureline.v1, s.BBox) & MapSet.GetCSFieldBits(measureline.v2, s.BBox)) == 0) {
+								foreach (Sidedef side in s.Sidedefs) {
+									if(processed.ContainsKey(side.Line)) continue;
+									if(side.Line == ld) continue;
+
 									float u;
-							if(ld2.Line.GetIntersection(measureline, out u))
-							{
-								if(!float.IsNaN(u) && (u > 0.0f) && (u < 1.0f) && (ld2 != ld))
+									if(side.Line.Line.GetIntersection(measureline, out u)) {
+										if(float.IsNaN(u) || (u < 0.0f) || (u > 1.0f)) continue;
 										intersections.Add(u);
 									}
+
+									processed.Add(side.Line, false);
+								}
+							}
 						}
 
 						// Sort the intersections
@@ -960,7 +968,7 @@ namespace CodeImp.DoomBuilder.Geometry
 
 				// Join merge vertices so that overlapping vertices in the draw become one.
 				map.BeginAddRemove();
-				MapSet.JoinVertices(mergeverts, mergeverts, false, MapSet.STITCH_DISTANCE);
+				MapSet.JoinVertices(mergeverts, MapSet.STITCH_DISTANCE); //mxd
 				map.EndAddRemove();
 				
 				/***************************************************\
@@ -1187,7 +1195,7 @@ namespace CodeImp.DoomBuilder.Geometry
 										drawingclosed = true;
 
 										// Join merge vertices so that overlapping vertices in the draw become one.
-										MapSet.JoinVertices(mergeverts, mergeverts, false, MapSet.STITCH_DISTANCE);
+										MapSet.JoinVertices(mergeverts, MapSet.STITCH_DISTANCE); //mxd
 									}
 								}
 							}
@@ -1417,7 +1425,8 @@ namespace CodeImp.DoomBuilder.Geometry
 					for(int i = newlines.Count - 1; i >= 0; i--)
 					{
 						// Remove the line if it has no sides
-						if((newlines[i].Front == null) && (newlines[i].Back == null)) newlines[i].Dispose();
+						if((newlines[i].Front != null) || (newlines[i].Back != null)) continue; 
+						newlines[i].Dispose();
 					}
 				}
 

Source/Core/Map/BlockMap.cs

@@ -52,6 +52,7 @@ namespace CodeImp.DoomBuilder.Map
 		public Size Size { get { return size; } }
 		public RectangleF Range { get { return range; } }
 		public int BlockSize { get { return blocksize; } }
+		internal BE[,] Map { get { return blockmap; } }
 		
 		#endregion
 		

Source/Core/Map/MapSet.cs

@@ -17,7 +17,6 @@
 #region ================== Namespaces
 
 using System;
-using System.Collections;
 using System.Collections.Generic;
 using CodeImp.DoomBuilder.Geometry;
 using CodeImp.DoomBuilder.Windows;
@@ -1907,7 +1906,7 @@ namespace CodeImp.DoomBuilder.Map
 			foreach(Linedef l in lines)
 			{
 				// Check the cs field bits
-				if ((GetCSFieldBits(l.Start, ref area) & GetCSFieldBits(l.End, ref area)) == 0) 
+				if ((GetCSFieldBits(l.Start.Position, area) & GetCSFieldBits(l.End.Position, area)) == 0) 
 				{
 					// The line could be in the area
 					newlines.Add(l);
@@ -1918,14 +1917,14 @@ namespace CodeImp.DoomBuilder.Map
 			return newlines;
 		}
 
-		// This returns the cohen-sutherland field bits for a vertex in a rectangle area
-		private static int GetCSFieldBits(Vertex v, ref RectangleF area) 
+		/// <summary> This returns the cohen-sutherland field bits for a vector in a rectangle area</summary>
+		public static int GetCSFieldBits(Vector2D v, RectangleF area) 
 		{
 			int bits = 0;
-			if(v.Position.y < area.Top) bits |= 0x01;
-			if(v.Position.y > area.Bottom) bits |= 0x02;
-			if(v.Position.x < area.Left) bits |= 0x04;
-			if(v.Position.x > area.Right) bits |= 0x08;
+			if(v.y < area.Top) bits |= 0x01;
+			if(v.y > area.Bottom) bits |= 0x02;
+			if(v.x < area.Left) bits |= 0x04;
+			if(v.x > area.Right) bits |= 0x08;
 			return bits;
 		}
 
@@ -2270,6 +2269,48 @@ namespace CodeImp.DoomBuilder.Map
 			return joinsdone;
 		}
 
+		/// <summary>This joins nearby vertices in the same collection </summary>
+		public static int JoinVertices(List<Vertex> set, float joindist) {
+			float joindist2 = joindist * joindist;
+			int joinsdone = 0;
+			bool joined;
+			Vertex v1, v2;
+
+			do {
+				// No joins yet
+				joined = false;
+
+				// Go for all vertices in the first set
+				for(int i = 0; i < set.Count - 1; i++) {
+					for(int c = i + 1; c < set.Count; c++) {
+						v1 = set[i];
+						v2 = set[c];
+
+						// Check if vertices are close enough
+						if (v1.DistanceToSq(v2.Position) <= joindist2) {
+							// Check if not the same vertex
+							if (v1.Index != v2.Index) {
+								// Move the second vertex to match the first
+								v2.Move(v1.Position);
+
+								// Join the second into the first
+								v2.Join(v1);
+								set.Remove(v2);
+
+								// Count the join
+								joinsdone++;
+								joined = true;
+								break;
+							}
+						}
+					}
+				}
+			} while(joined);
+
+			// Return result
+			return joinsdone;
+		}
+
 		/// <summary>This corrects lines that have a back sidedef but no front sidedef by flipping them. Returns the number of flips made.</summary>
 		public static int FlipBackwardLinedefs(ICollection<Linedef> lines)
 		{
@@ -2299,28 +2340,38 @@ namespace CodeImp.DoomBuilder.Map
 			float splitdist2 = splitdist * splitdist;
 			bool splitted;
 
+			//mxd. Create blockmap
+			RectangleF area = CreateArea(verts);
+			BlockMap<BlockEntry> blockmap = new BlockMap<BlockEntry>(area);
+			blockmap.AddVerticesSet(verts);
+			blockmap.AddLinedefsSet(lines);
+			int bmWidth = blockmap.Size.Width;
+			int bmHeight = blockmap.Size.Height;
+			BlockEntry[,] bmap = blockmap.Map;
+			BlockEntry block;
+			int w, h;
+
 			do
 			{
 				// No split yet
 				splitted = false;
 
+				for(w = 0; w < bmWidth; w++) {
+					for(h = 0; h < bmHeight; h++) {
+						block = bmap[w, h];
+						if(block.Vertices.Count == 0 || block.Lines.Count == 0) continue;
+
 						// Go for all the lines
-				foreach(Linedef l in lines)
-				{
+						foreach(Linedef l in block.Lines) {
 							// Go for all the vertices
-					foreach(Vertex v in verts)
-					{
+							foreach(Vertex v in block.Vertices) {
 								// Check if v is close enough to l for splitting
-						if(l.DistanceToSq(v.Position, true) <= splitdist2)
-						{
+								if(l.DistanceToSq(v.Position, true) <= splitdist2) {
 									// Line is not already referencing v?
 									Vector2D deltastart = l.Start.Position - v.Position;
 									Vector2D deltaend = l.End.Position - v.Position;
-							if(((Math.Abs(deltastart.x) > 0.001f) ||
-								(Math.Abs(deltastart.y) > 0.001f)) &&
-							   ((Math.Abs(deltaend.x) > 0.001f) ||
-								(Math.Abs(deltaend.y) > 0.001f)))
-							{
+									if(((Math.Abs(deltastart.x) > 0.001f) || (Math.Abs(deltastart.y) > 0.001f)) &&
+									   ((Math.Abs(deltaend.x) > 0.001f) || (Math.Abs(deltaend.y) > 0.001f))) {
 										// Split line l with vertex v
 										Linedef nl = l.Split(v);
 										if(nl == null) return false;
@@ -2334,8 +2385,7 @@ namespace CodeImp.DoomBuilder.Map
 										nl.UpdateCache();
 
 										// Add both lines to changedlines
-								if(changedlines != null)
-								{
+										if(changedlines != null) {
 											changedlines.Add(l);
 											changedlines.Add(nl);
 										}
@@ -2353,6 +2403,8 @@ namespace CodeImp.DoomBuilder.Map
 							if(splitted) break;
 						}
 					}
+				}
+			}
 			while(splitted);
 			
 			return true;

Source/Core/Map/Sidedef.cs

@@ -269,31 +269,30 @@ namespace CodeImp.DoomBuilder.Map
 		#region ================== Methods
 
 		// This checks and returns a flag without creating it
-		public bool IsFlagSet(string flagname) {
-			if(flags.ContainsKey(flagname))
-				return flags[flagname];
-			else
-				return false;
+		public bool IsFlagSet(string flagname) 
+		{
+			return (flags.ContainsKey(flagname) && flags[flagname]);
 		}
 
 		// This sets a flag
-		public void SetFlag(string flagname, bool value) {
+		public void SetFlag(string flagname, bool value) 
+		{
 			if(!flags.ContainsKey(flagname) || (IsFlagSet(flagname) != value)) {
 				BeforePropsChange();
-
 				flags[flagname] = value;
 			}
 		}
 
 		// This returns a copy of the flags dictionary
-		public Dictionary<string, bool> GetFlags() {
+		public Dictionary<string, bool> GetFlags() 
+		{
 			return new Dictionary<string, bool>(flags);
 		}
 
 		// This clears all flags
-		public void ClearFlags() {
+		public void ClearFlags() 
+		{
 			BeforePropsChange();
-
 			flags.Clear();
 		}
 		
@@ -306,11 +305,13 @@ namespace CodeImp.DoomBuilder.Map
 		// This removes textures that are not required
 		public void RemoveUnneededTextures(bool removemiddle, bool force)
 		{
-			BeforePropsChange();
+			bool changed = false; //mxd
 			
 			// The middle texture can be removed regardless of any sector tag or linedef action
 			if(!MiddleRequired() && removemiddle)
 			{
+				BeforePropsChange(); //mxd
+				changed = true; //mxd
 				this.texnamemid = "-";
 				this.longtexnamemid = MapSet.EmptyLongName;
 				General.Map.IsChanged = true;
@@ -324,6 +325,10 @@ namespace CodeImp.DoomBuilder.Map
 			{
 				if(!HighRequired())
 				{
+					if(!changed) { //mxd
+						BeforePropsChange();
+						changed = true;
+					}
 					this.texnamehigh = "-";
 					this.longtexnamehigh = MapSet.EmptyLongName;
 					General.Map.IsChanged = true;
@@ -331,6 +336,7 @@ namespace CodeImp.DoomBuilder.Map
 
 				if(!LowRequired())
 				{
+					if(!changed) BeforePropsChange(); //mxd
 					this.texnamelow = "-";
 					this.longtexnamelow = MapSet.EmptyLongName;
 					General.Map.IsChanged = true;
@@ -349,11 +355,9 @@ namespace CodeImp.DoomBuilder.Map
 				// Texture is required when ceiling of other side is lower
 				return (Other.sector.CeilHeight < this.sector.CeilHeight);
 			}
-			else
-			{
+
 			return false;
 		}
-		}
 
 		/// <summary>
 		/// This checks if a texture is required
@@ -375,11 +379,9 @@ namespace CodeImp.DoomBuilder.Map
 				// Texture is required when floor of other side is higher
 				return (Other.sector.FloorHeight > this.sector.FloorHeight);
 			}
-			else
-			{
+
 			return false;
 		}
-		}
 
 		/// <summary>
 		/// This returns the height of the upper wall part. Returns 0 when no upper part exists.
@@ -394,11 +396,9 @@ namespace CodeImp.DoomBuilder.Map
 				int height = top - bottom;
 				return (height > 0) ? height : 0;
 			}
-			else
-			{
+
 			return 0;
 		}
-		}
 
 		/// <summary>
 		/// This returns the height of the middle wall part.
@@ -435,11 +435,9 @@ namespace CodeImp.DoomBuilder.Map
 				int height = top - bottom;
 				return (height > 0) ? height : 0;
 			}
-			else
-			{
+
 			return 0;
 		}
-		}
 		
 		// This creates a checksum from the sidedef properties
 		// Used for faster sidedefs compression

Source/Plugins/BuilderModes/ClassicModes/SnapVerticesMode.cs

@@ -81,14 +81,14 @@ namespace CodeImp.DoomBuilder.BuilderModes.ClassicModes
 				if (block == null) continue;
 
 				foreach (Vertex blockVert in block.Vertices) {
-					if(!blockVert.IsDisposed && blockVert.Index != v.Index && blockVert.Position == v.Position) {
+					if(blockVert.IsDisposed || blockVert.Index == v.Index || blockVert.Position != v.Position) continue;
+
 					foreach(Linedef l in blockVert.Linedefs)
 						if(!movedLines.Contains(l)) movedLines.Add(l);
 					v.Join(blockVert);
 					break;
 				}
 			}
-			}
 
 			// Update cached values of lines because we may need their length/angle
 			General.Map.Map.Update(true, false);