added stuff

Build/Builder.cfg

@@ -2,9 +2,9 @@
 mainwindow
 {
 	positionx = 27;
-	windowstate = 2;
-	positiony = 15;
 	sizeheight = 572;
+	positiony = 15;
+	windowstate = 2;
 	sizewidth = 739;
 }
 

Source/Builder.csproj

@@ -53,6 +53,12 @@
     <Compile Include="Geometry\Line2D.cs" />
     <Compile Include="Geometry\Vector2D.cs" />
     <Compile Include="Geometry\Vector3D.cs" />
+    <Compile Include="Interface\AboutForm.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Interface\AboutForm.Designer.cs">
+      <DependentUpon>AboutForm.cs</DependentUpon>
+    </Compile>
     <Compile Include="Interface\MapOptionsForm.cs">
       <SubType>Form</SubType>
     </Compile>
@@ -105,6 +111,10 @@
     <Reference Include="System.Windows.Forms" />
   </ItemGroup>
   <ItemGroup>
+    <EmbeddedResource Include="Interface\AboutForm.resx">
+      <SubType>Designer</SubType>
+      <DependentUpon>AboutForm.cs</DependentUpon>
+    </EmbeddedResource>
     <EmbeddedResource Include="Interface\MainForm.resx">
       <SubType>Designer</SubType>
       <DependentUpon>MainForm.cs</DependentUpon>
@@ -125,6 +135,7 @@
   </ItemGroup>
   <ItemGroup>
     <Content Include="Resources\Builder.ico" />
+    <None Include="Resources\Splash2small.png" />
   </ItemGroup>
   <ItemGroup>
     <None Include="Resources\Splash2.png" />

Source/Editing/EditMode.cs

@@ -27,6 +27,7 @@ using System.Reflection;
 using CodeImp.DoomBuilder.Interface;
 using CodeImp.DoomBuilder.IO;
 using CodeImp.DoomBuilder.Map;
+using CodeImp.DoomBuilder.Rendering;
 
 #endregion
 
@@ -39,7 +40,10 @@ namespace CodeImp.DoomBuilder.Editing
 		#endregion
 
 		#region ================== Variables
-
+		
+		// Graphics
+		protected Graphics graphics;
+		
 		// Disposing
 		protected bool isdisposed = false;
 
@@ -58,6 +62,7 @@ namespace CodeImp.DoomBuilder.Editing
 		public EditMode()
 		{
 			// Initialize
+			this.graphics = General.Map.Graphics;
 
 			// We have no destructor
 			GC.SuppressFinalize(this);
@@ -89,6 +94,7 @@ namespace CodeImp.DoomBuilder.Editing
 		public virtual void MouseMove(MouseEventArgs e) { }
 		public virtual void MouseUp(MouseEventArgs e) { }
 		public virtual void Cancel() { }
+		public virtual void RedrawDisplay() { }
 		
 		#endregion
 	}

Source/Editing/FrozenOverviewMode.cs

@@ -27,6 +27,7 @@ using System.Reflection;
 using CodeImp.DoomBuilder.Interface;
 using CodeImp.DoomBuilder.IO;
 using CodeImp.DoomBuilder.Map;
+using CodeImp.DoomBuilder.Rendering;
 
 #endregion
 
@@ -72,6 +73,17 @@ namespace CodeImp.DoomBuilder.Editing
 
 		#region ================== Methods
 
+		// This redraws the display
+		public override void RedrawDisplay()
+		{
+			if(renderer.StartRendering())
+			{
+				renderer.RenderLinedefs(General.Map.Data.Linedefs);
+
+				renderer.FinishRendering();
+			}
+		}
+		
 		#endregion
 	}
 }

Source/Editing/ViewClassicMode.cs

@@ -27,6 +27,7 @@ using System.Reflection;
 using CodeImp.DoomBuilder.Interface;
 using CodeImp.DoomBuilder.IO;
 using CodeImp.DoomBuilder.Map;
+using CodeImp.DoomBuilder.Rendering;
 
 #endregion
 
@@ -40,6 +41,9 @@ namespace CodeImp.DoomBuilder.Editing
 
 		#region ================== Variables
 
+		// Graphics
+		protected Renderer2D renderer;
+		
 		#endregion
 
 		#region ================== Properties
@@ -52,7 +56,7 @@ namespace CodeImp.DoomBuilder.Editing
 		public ViewClassicMode()
 		{
 			// Initialize
-
+			this.renderer = graphics.Renderer2D;
 		}
 
 		// Diposer
@@ -62,7 +66,7 @@ namespace CodeImp.DoomBuilder.Editing
 			if(!isdisposed)
 			{
 				// Clean up
-				
+
 				// Dispose base
 				base.Dispose();
 			}

Source/General/General.cs

@@ -27,6 +27,7 @@ using System.Reflection;
 using CodeImp.DoomBuilder.Interface;
 using CodeImp.DoomBuilder.IO;
 using CodeImp.DoomBuilder.Map;
+using CodeImp.DoomBuilder.Geometry;
 
 #endregion
 
@@ -215,7 +216,7 @@ namespace CodeImp.DoomBuilder
 		{
 			MapOptions newoptions;
 			MapOptionsForm optionswindow;
-			
+
 			// Empty options
 			newoptions = new MapOptions();
 
@@ -252,6 +253,16 @@ namespace CodeImp.DoomBuilder
 						return false;
 					}
 
+					// TEST:
+					Vertex v1 = map.Data.CreateVertex(new Vector2D(20f, 20f));
+					Vertex v2 = map.Data.CreateVertex(new Vector2D(-20f, 20f));
+					Vertex v3 = map.Data.CreateVertex(new Vector2D(-20f, -20f));
+					Vertex v4 = map.Data.CreateVertex(new Vector2D(20f, -20f));
+					map.Data.CreateLinedef(v1, v2);
+					map.Data.CreateLinedef(v2, v3);
+					map.Data.CreateLinedef(v3, v4);
+					map.Data.CreateLinedef(v4, v1);
+					
 					// Done
 					mainwindow.UpdateMenus();
 					mainwindow.DisplayReady();

Source/General/MapManager.cs

@@ -65,10 +65,12 @@ namespace CodeImp.DoomBuilder
 		public string FilePathName { get { return filepathname; } }
 		public string FileTitle { get { return filetitle; } }
 		public MapOptions Options { get { return options; } }
+		public MapSet Data { get { return data; } }
 		public EditMode Mode { get { return mode; } }
 		public bool IsChanged { get { return changed; } set { changed = value; } }
 		public bool IsDisposed { get { return isdisposed; } }
-
+		public Graphics Graphics { get { return graphics; } }
+		
 		#endregion
 
 		#region ================== Constructor / Disposer

Source/Interface/AboutForm.Designer.cs

@@ -0,0 +1,70 @@
+namespace CodeImp.DoomBuilder.Interface
+{
+	partial class AboutForm
+	{
+		/// <summary>
+		/// Required designer variable.
+		/// </summary>
+		private System.ComponentModel.IContainer components = null;
+
+		/// <summary>
+		/// Clean up any resources being used.
+		/// </summary>
+		/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
+		protected override void Dispose(bool disposing)
+		{
+			if(disposing && (components != null))
+			{
+				components.Dispose();
+			}
+			base.Dispose(disposing);
+		}
+
+		#region Windows Form Designer generated code
+
+		/// <summary>
+		/// Required method for Designer support - do not modify
+		/// the contents of this method with the code editor.
+		/// </summary>
+		private void InitializeComponent()
+		{
+			System.Windows.Forms.PictureBox pictureBox1;
+			pictureBox1 = new System.Windows.Forms.PictureBox();
+			((System.ComponentModel.ISupportInitialize)(pictureBox1)).BeginInit();
+			this.SuspendLayout();
+			// 
+			// pictureBox1
+			// 
+			pictureBox1.Image = global::CodeImp.DoomBuilder.Properties.Resources.Splash2small;
+			pictureBox1.Location = new System.Drawing.Point(12, 12);
+			pictureBox1.Name = "pictureBox1";
+			pictureBox1.Size = new System.Drawing.Size(137, 82);
+			pictureBox1.SizeMode = System.Windows.Forms.PictureBoxSizeMode.AutoSize;
+			pictureBox1.TabIndex = 0;
+			pictureBox1.TabStop = false;
+			// 
+			// AboutForm
+			// 
+			this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 14F);
+			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+			this.ClientSize = new System.Drawing.Size(428, 263);
+			this.Controls.Add(pictureBox1);
+			this.DoubleBuffered = true;
+			this.Font = new System.Drawing.Font("Arial", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
+			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
+			this.MaximizeBox = false;
+			this.MinimizeBox = false;
+			this.Name = "AboutForm";
+			this.ShowIcon = false;
+			this.ShowInTaskbar = false;
+			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
+			this.Text = "About Doom Builder";
+			((System.ComponentModel.ISupportInitialize)(pictureBox1)).EndInit();
+			this.ResumeLayout(false);
+			this.PerformLayout();
+
+		}
+
+		#endregion
+	}
+}

Source/Interface/AboutForm.cs

@@ -0,0 +1,39 @@
+
+#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.ComponentModel;
+using System.Drawing;
+using System.Text;
+using System.Windows.Forms;
+
+#endregion
+
+namespace CodeImp.DoomBuilder.Interface
+{
+	public partial class AboutForm : Form
+	{
+		// Constructor
+		public AboutForm()
+		{
+			// Initialize
+			InitializeComponent();
+		}
+	}
+}

Source/Interface/AboutForm.resx

@@ -0,0 +1,123 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <metadata name="pictureBox1.GenerateMember" type="System.Boolean, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
+    <value>False</value>
+  </metadata>
+</root>

Source/Interface/MainForm.Designer.cs

@@ -28,6 +28,7 @@ namespace CodeImp.DoomBuilder.Interface
 		/// </summary>
 		private void InitializeComponent()
 		{
+			this.components = new System.ComponentModel.Container();
 			System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(MainForm));
 			this.menumain = new System.Windows.Forms.MenuStrip();
 			this.menufile = new System.Windows.Forms.ToolStripMenuItem();
@@ -45,6 +46,9 @@ namespace CodeImp.DoomBuilder.Interface
 			this.statuslabel = new System.Windows.Forms.ToolStripStatusLabel();
 			this.panelinfo = new System.Windows.Forms.Panel();
 			this.display = new System.Windows.Forms.PictureBox();
+			this.redrawtimer = new System.Windows.Forms.Timer(this.components);
+			this.menuhelp = new System.Windows.Forms.ToolStripMenuItem();
+			this.itemhelpabout = new System.Windows.Forms.ToolStripMenuItem();
 			this.menumain.SuspendLayout();
 			this.statusbar.SuspendLayout();
 			((System.ComponentModel.ISupportInitialize)(this.display)).BeginInit();
@@ -53,7 +57,8 @@ namespace CodeImp.DoomBuilder.Interface
 			// menumain
 			// 
 			this.menumain.Items.AddRange(new System.Windows.Forms.ToolStripItem[] {
-            this.menufile});
+            this.menufile,
+            this.menuhelp});
 			this.menumain.Location = new System.Drawing.Point(0, 0);
 			this.menumain.Name = "menumain";
 			this.menumain.Size = new System.Drawing.Size(731, 24);
@@ -184,11 +189,32 @@ namespace CodeImp.DoomBuilder.Interface
 			this.display.MouseLeave += new System.EventHandler(this.display_MouseLeave);
 			this.display.MouseDown += new System.Windows.Forms.MouseEventHandler(this.display_MouseDown);
 			this.display.MouseMove += new System.Windows.Forms.MouseEventHandler(this.display_MouseMove);
+			this.display.Paint += new System.Windows.Forms.PaintEventHandler(this.display_Paint);
 			this.display.MouseDoubleClick += new System.Windows.Forms.MouseEventHandler(this.display_MouseDoubleClick);
 			this.display.MouseClick += new System.Windows.Forms.MouseEventHandler(this.display_MouseClick);
 			this.display.MouseUp += new System.Windows.Forms.MouseEventHandler(this.display_MouseUp);
 			this.display.MouseEnter += new System.EventHandler(this.display_MouseEnter);
 			// 
+			// redrawtimer
+			// 
+			this.redrawtimer.Interval = 1;
+			this.redrawtimer.Tick += new System.EventHandler(this.redrawtimer_Tick);
+			// 
+			// menuhelp
+			// 
+			this.menuhelp.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] {
+            this.itemhelpabout});
+			this.menuhelp.Name = "menuhelp";
+			this.menuhelp.Size = new System.Drawing.Size(40, 20);
+			this.menuhelp.Text = "Help";
+			// 
+			// itemhelpabout
+			// 
+			this.itemhelpabout.Name = "itemhelpabout";
+			this.itemhelpabout.Size = new System.Drawing.Size(191, 22);
+			this.itemhelpabout.Text = "About Doom Builder...";
+			this.itemhelpabout.Click += new System.EventHandler(this.itemhelpabout_Click);
+			// 
 			// MainForm
 			// 
 			this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.None;
@@ -238,5 +264,8 @@ namespace CodeImp.DoomBuilder.Interface
 		private System.Windows.Forms.ToolStripMenuItem itemexit;
 		private System.Windows.Forms.ToolStripStatusLabel statuslabel;
 		private System.Windows.Forms.ToolStripMenuItem itemclosemap;
+		private System.Windows.Forms.Timer redrawtimer;
+		private System.Windows.Forms.ToolStripMenuItem menuhelp;
+		private System.Windows.Forms.ToolStripMenuItem itemhelpabout;
 	}
 }

Source/Interface/MainForm.cs

@@ -177,6 +177,23 @@ namespace CodeImp.DoomBuilder.Interface
 			this.Update();
 		}
 
+		// Display needs repainting
+		private void display_Paint(object sender, PaintEventArgs e)
+		{
+			// Repaint on demand
+			if(General.Map != null) redrawtimer.Enabled = true;
+		}
+
+		// Redraw requested
+		private void redrawtimer_Tick(object sender, EventArgs e)
+		{
+			// Disable timer (only redraw once)
+			redrawtimer.Enabled = false;
+			
+			// Redraw now
+			if(General.Map != null) General.Map.Mode.RedrawDisplay();
+		}
+		
 		// Mouse click
 		private void display_MouseClick(object sender, MouseEventArgs e) { if(General.Map != null) General.Map.Mode.MouseClick(e); }
 
@@ -233,5 +250,19 @@ namespace CodeImp.DoomBuilder.Interface
 		}
 
 		#endregion
+
+		#region ================== Help Menu
+
+		// About clicked
+		private void itemhelpabout_Click(object sender, EventArgs e)
+		{
+			AboutForm aboutform;
+			
+			// Show about dialog
+			aboutform = new AboutForm();
+			aboutform.ShowDialog(this);
+		}
+
+		#endregion
 	}
 }

Source/Interface/MainForm.resx

@@ -141,6 +141,9 @@
   <metadata name="display.Locked" type="System.Boolean, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
     <value>True</value>
   </metadata>
+  <metadata name="redrawtimer.TrayLocation" type="System.Drawing.Point, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+    <value>304, 17</value>
+  </metadata>
   <metadata name="$this.Locked" type="System.Boolean, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
     <value>True</value>
   </metadata>

Source/Map/Linedef.cs

@@ -116,8 +116,8 @@ namespace CodeImp.DoomBuilder.Map
 				end.DetachLinedef(endvertexlistitem);
 				
 				// Dispose sidedefs
-				front.Dispose();
+				if(front != null) front.Dispose();
-				back.Dispose();
+				if(back != null) back.Dispose();
 				
 				// Clean up
 				mainlistitem = null;

Source/Properties/Resources.Designer.cs

@@ -66,5 +66,12 @@ namespace CodeImp.DoomBuilder.Properties {
                 return ((System.Drawing.Bitmap)(obj));
             }
         }
+        
+        internal static System.Drawing.Bitmap Splash2small {
+            get {
+                object obj = ResourceManager.GetObject("Splash2small", resourceCulture);
+                return ((System.Drawing.Bitmap)(obj));
+            }
+        }
     }
 }

Source/Properties/Resources.resx

@@ -121,4 +121,7 @@
   <data name="Splash2" type="System.Resources.ResXFileRef, System.Windows.Forms">
     <value>..\Resources\Splash2.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
   </data>
+  <data name="Splash2small" type="System.Resources.ResXFileRef, System.Windows.Forms">
+    <value>..\Resources\Splash2small.png;System.Drawing.Bitmap, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a</value>
+  </data>
 </root>

Source/Rendering/Graphics.cs

@@ -50,6 +50,8 @@ namespace CodeImp.DoomBuilder.Rendering
 		private Control rendertarget;
 		private Caps devicecaps;
 		private Device d3dd;
+		private Renderer2D renderer2d;
+		private Renderer3D renderer3d;
 		
 		// Disposing
 		private bool isdisposed = false;
@@ -58,9 +60,11 @@ namespace CodeImp.DoomBuilder.Rendering
 
 		#region ================== Properties
 
-		// Disposing
+		public Device Device { get { return d3dd; } }
 		public bool IsDisposed { get { return isdisposed; } }
-
+		public Renderer2D Renderer2D { get { return renderer2d; } }
+		public Renderer3D Renderer3D { get { return renderer3d; } }
+		
 		#endregion
 
 		#region ================== Constructor / Disposer
@@ -82,6 +86,8 @@ namespace CodeImp.DoomBuilder.Rendering
 			if(!isdisposed)
 			{
 				// Clean up
+				renderer2d.Dispose();
+				renderer3d.Dispose();
 				d3dd.Dispose();
 				rendertarget = null;
 
@@ -210,6 +216,10 @@ namespace CodeImp.DoomBuilder.Rendering
 			// Initialize settings
 			SetupSettings();
 			
+			// Create renderers
+			renderer2d = new Renderer2D(this);
+			renderer3d = new Renderer3D(this);
+			
 			// Done
 			return true;
 		}

Source/Rendering/Renderer2D.cs

@@ -27,6 +27,8 @@ using System.Reflection;
 using System.Drawing;
 using Microsoft.DirectX.Direct3D;
 using System.ComponentModel;
+using CodeImp.DoomBuilder.Map;
+using Microsoft.DirectX;
 
 #endregion
 
@@ -40,6 +42,12 @@ namespace CodeImp.DoomBuilder.Rendering
 
 		#region ================== Variables
 
+		// Owner
+		private Graphics graphics;
+		
+		// Main objects
+		private Line line;
+
 		// Disposing
 		private bool isdisposed = false;
 
@@ -55,10 +63,16 @@ namespace CodeImp.DoomBuilder.Rendering
 		#region ================== Constructor / Disposer
 
 		// Constructor
-		public Renderer2D()
+		public Renderer2D(Graphics graphics)
 		{
 			// Initialize
+			this.graphics = graphics;
 
+			// Create line object
+			line = new Line(graphics.Device);
+			line.Width = 2f;
+			line.Antialias = true;
+			
 			// We have no destructor
 			GC.SuppressFinalize(this);
 		}
@@ -70,7 +84,8 @@ namespace CodeImp.DoomBuilder.Rendering
 			if(!isdisposed)
 			{
 				// Clean up
-
+				line.Dispose();
+				
 				// Done
 				isdisposed = true;
 			}
@@ -80,6 +95,83 @@ namespace CodeImp.DoomBuilder.Rendering
 
 		#region ================== Methods
 
+		// This begins a drawing session
+		public bool StartRendering()
+		{
+			int coopresult;
+
+			// When minimized, do not render anything
+			if(General.MainWindow.WindowState != FormWindowState.Minimized)
+			{
+				// Test the cooperative level
+				graphics.Device.CheckCooperativeLevel(out coopresult);
+
+				// Check if device must be reset
+				if(coopresult == (int)ResultCode.DeviceNotReset)
+				{
+					// TODO: Device is lost and must be reset now
+					//return Reset();
+					return false;
+				}
+				// Check if device is lost
+				else if(coopresult == (int)ResultCode.DeviceLost)
+				{
+					// Device is lost and cannot be reset now
+					return false;
+				}
+
+				// Clear the screen
+				graphics.Device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, 0, 1f, 0);
+				
+				// Ready to render
+				graphics.Device.BeginScene();
+				return true;
+			}
+			else
+			{
+				// Minimized, you cannot see anything
+				return false;
+			}
+		}
+		
+		// This ends a drawing session
+		public void FinishRendering()
+		{
+			try
+			{
+				// Done
+				graphics.Device.EndScene();
+				
+				// Display the scene
+				graphics.Device.Present();
+			}
+			// Errors are not a problem here
+			catch(Exception) { }
+		}
+		
+		// This renders a set of Linedefs
+		public void RenderLinedefs(IEnumerable<Linedef> linedefs)
+		{
+			Vector2[] vertices = new Vector2[2];
+
+			line.Begin();
+
+			// Go for all linedefs
+			foreach(Linedef l in linedefs)
+			{
+				// Make vertices
+				vertices[0].X = l.Start.Position.x;
+				vertices[0].Y = l.Start.Position.y;
+				vertices[1].X = l.End.Position.x;
+				vertices[1].Y = l.End.Position.y;
+
+				// Draw line
+				line.Draw(vertices, -1);
+			}
+
+			line.End();
+		}
+
 		#endregion
 	}
 }

Source/Rendering/Renderer3D.cs

@@ -40,6 +40,9 @@ namespace CodeImp.DoomBuilder.Rendering
 
 		#region ================== Variables
 
+		// Owner
+		private Graphics graphics;
+
 		// Disposing
 		private bool isdisposed = false;
 
@@ -55,9 +58,10 @@ namespace CodeImp.DoomBuilder.Rendering
 		#region ================== Constructor / Disposer
 
 		// Constructor
-		public Renderer3D()
+		public Renderer3D(Graphics graphics)
 		{
 			// Initialize
+			this.graphics = graphics;
 
 			// We have no destructor
 			GC.SuppressFinalize(this);