removed the Fixed 4:3 Aspect option (there is no better aspect than the width divided by height for square pixels, which is pretty much all computer monitors)

Build/Builder.cfg

@@ -217,7 +217,6 @@ mousespeed = 500;
 movespeed = 600;
 viewdistance = 1000f;
 invertyaxis = false;
-fixedaspect = false;
 scriptfontname = "Lucida Console";
 scriptfontsize = 10;
 scriptfontbold = false;

Source/Config/ProgramConfiguration.cs

@@ -66,7 +66,6 @@ namespace CodeImp.DoomBuilder.Config
 		private int movespeed;
 		private float viewdistance;
 		private bool invertyaxis;
-		private bool fixedaspect;
 		private string scriptfontname;
 		private int scriptfontsize;
 		private bool scriptfontbold;
@@ -104,7 +103,6 @@ namespace CodeImp.DoomBuilder.Config
 		public int MoveSpeed { get { return movespeed; } internal set { movespeed = value; } }
 		public float ViewDistance { get { return viewdistance; } internal set { viewdistance = value; } }
 		public bool InvertYAxis { get { return invertyaxis; } internal set { invertyaxis = value; } }
-		public bool FixedAspect { get { return fixedaspect; } internal set { fixedaspect = value; } }
 		public string ScriptFontName { get { return scriptfontname; } internal set { scriptfontname = value; } }
 		public int ScriptFontSize { get { return scriptfontsize; } internal set { scriptfontsize = value; } }
 		public bool ScriptFontBold { get { return scriptfontbold; } internal set { scriptfontbold = value; } }
@@ -158,7 +156,6 @@ namespace CodeImp.DoomBuilder.Config
 				movespeed = cfg.ReadSetting("movespeed", 100);
 				viewdistance = cfg.ReadSetting("viewdistance", 3000.0f);
 				invertyaxis = cfg.ReadSetting("invertyaxis", false);
-				fixedaspect = cfg.ReadSetting("fixedaspect", true);
 				scriptfontname = cfg.ReadSetting("scriptfontname", "Lucida Console");
 				scriptfontsize = cfg.ReadSetting("scriptfontsize", 10);
 				scriptfontbold = cfg.ReadSetting("scriptfontbold", false);
@@ -195,7 +192,6 @@ namespace CodeImp.DoomBuilder.Config
 			cfg.WriteSetting("movespeed", movespeed);
 			cfg.WriteSetting("viewdistance", viewdistance);
 			cfg.WriteSetting("invertyaxis", invertyaxis);
-			cfg.WriteSetting("fixedaspect", fixedaspect);
 			cfg.WriteSetting("scriptfontname", scriptfontname);
 			cfg.WriteSetting("scriptfontsize", scriptfontsize);
 			cfg.WriteSetting("scriptfontbold", scriptfontbold);

Source/Rendering/Renderer3D.cs

@@ -45,7 +45,6 @@ namespace CodeImp.DoomBuilder.Rendering
 		private const float PROJ_NEAR_PLANE = 1f;
 		private const float CROSSHAIR_SCALE = 0.06f;
 		private const float FOG_RANGE = 0.9f;
-		private const float FIXED_ASPECT = 4.0f / 3.0f;
 		
 		#endregion
 
@@ -276,18 +275,9 @@ namespace CodeImp.DoomBuilder.Rendering
 		// This creates the projection
 		internal void CreateProjection()
 		{
-			float aspect;
+			// Calculate aspect
-			
+			float aspect = (float)General.Map.Graphics.RenderTarget.ClientSize.Width /
-			// Determine aspect to use
+						   (float)General.Map.Graphics.RenderTarget.ClientSize.Height;
-			if(General.Settings.FixedAspect)
-			{
-				aspect = FIXED_ASPECT;
-			}
-			else
-			{
-				aspect = (float)General.Map.Graphics.RenderTarget.ClientSize.Width /
-						 (float)General.Map.Graphics.RenderTarget.ClientSize.Height;
-			}
 			
 			// The DirectX PerspectiveFovRH matrix method calculates the scaling in X and Y as follows:
 			// yscale = 1 / tan(fovY / 2)

Source/Windows/PreferencesForm.Designer.cs

@@ -69,7 +69,6 @@ namespace CodeImp.DoomBuilder.Windows
 			this.fieldofview = new Dotnetrix.Controls.TrackBar();
 			this.viewdistancelabel = new System.Windows.Forms.Label();
 			this.label13 = new System.Windows.Forms.Label();
-			this.fixedaspect = new System.Windows.Forms.CheckBox();
 			this.invertyaxis = new System.Windows.Forms.CheckBox();
 			this.movespeedlabel = new System.Windows.Forms.Label();
 			this.label11 = new System.Windows.Forms.Label();
@@ -545,7 +544,6 @@ namespace CodeImp.DoomBuilder.Windows
 			this.groupBox2.Controls.Add(this.fieldofview);
 			this.groupBox2.Controls.Add(this.viewdistancelabel);
 			this.groupBox2.Controls.Add(this.label13);
-			this.groupBox2.Controls.Add(this.fixedaspect);
 			this.groupBox2.Controls.Add(this.invertyaxis);
 			this.groupBox2.Controls.Add(this.movespeedlabel);
 			this.groupBox2.Controls.Add(this.label11);
@@ -629,16 +627,6 @@ namespace CodeImp.DoomBuilder.Windows
 			this.label13.TabIndex = 28;
 			this.label13.Text = "View distance:";
 			// 
-			// fixedaspect
-			// 
-			this.fixedaspect.AutoSize = true;
-			this.fixedaspect.Location = new System.Drawing.Point(31, 328);
-			this.fixedaspect.Name = "fixedaspect";
-			this.fixedaspect.Size = new System.Drawing.Size(133, 18);
-			this.fixedaspect.TabIndex = 27;
-			this.fixedaspect.Text = "Fixed 4:3 view aspect";
-			this.fixedaspect.UseVisualStyleBackColor = true;
-			// 
 			// invertyaxis
 			// 
 			this.invertyaxis.AutoSize = true;
@@ -1139,7 +1127,6 @@ namespace CodeImp.DoomBuilder.Windows
 		private System.Windows.Forms.Label label9;
 		private System.Windows.Forms.Label viewdistancelabel;
 		private System.Windows.Forms.Label label13;
-		private System.Windows.Forms.CheckBox fixedaspect;
 		private System.Windows.Forms.CheckBox invertyaxis;
 		private System.Windows.Forms.ComboBox defaultviewmode;
 		private System.Windows.Forms.Label label14;

Source/Windows/PreferencesForm.cs

@@ -65,7 +65,6 @@ namespace CodeImp.DoomBuilder.Windows
 			movespeed.Value = General.Settings.MoveSpeed / 100;
 			viewdistance.Value = General.Clamp((int)(General.Settings.ViewDistance / 200.0f), viewdistance.Minimum, viewdistance.Maximum);
 			invertyaxis.Checked = General.Settings.InvertYAxis;
-			fixedaspect.Checked = General.Settings.FixedAspect;
 			scriptfontbold.Checked = General.Settings.ScriptFontBold;
 			
 			// Fill fonts list
@@ -151,7 +150,6 @@ namespace CodeImp.DoomBuilder.Windows
 			General.Settings.MoveSpeed = movespeed.Value * 100;
 			General.Settings.ViewDistance = (float)viewdistance.Value * 200.0f;
 			General.Settings.InvertYAxis = invertyaxis.Checked;
-			General.Settings.FixedAspect = fixedaspect.Checked;
 			General.Settings.ScriptFontBold = scriptfontbold.Checked;
 			General.Settings.ScriptFontName = scriptfontname.Text;
 

Source/Windows/PreferencesForm.resx

@@ -255,9 +255,6 @@
   <metadata name="label13.Locked" type="System.Boolean, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
     <value>True</value>
   </metadata>
-  <metadata name="fixedaspect.Locked" type="System.Boolean, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
-    <value>True</value>
-  </metadata>
   <metadata name="invertyaxis.Locked" type="System.Boolean, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
     <value>True</value>
   </metadata>