working on visual mode

Source/Builder.csproj

@@ -652,6 +652,7 @@
     <EmbeddedResource Include="Resources\Crosshair.png" />
     <EmbeddedResource Include="Resources\CrosshairBusy.png" />
     <Content Include="Resources\DB2.ico" />
+    <Compile Include="VisualModes\IVisualPickable.cs" />
     <Compile Include="General\BinaryHeap.cs" />
     <Compile Include="Geometry\Plane.cs" />
     <Compile Include="Geometry\ProjectedFrustum2D.cs" />

Source/BuilderModes/BuilderModes.csproj

@@ -109,6 +109,7 @@
     <Compile Include="VisualModes\BaseVisualSector.cs" />
     <Compile Include="ClassicModes\DragVerticesMode.cs" />
     <Compile Include="ClassicModes\LinedefsMode.cs" />
+    <Compile Include="VisualModes\BaseVisualThing.cs" />
     <Compile Include="VisualModes\VisualCeiling.cs" />
     <Compile Include="VisualModes\VisualFloor.cs" />
     <Compile Include="VisualModes\VisualLower.cs" />

Source/BuilderModes/VisualModes/BaseVisualMode.cs

@@ -100,6 +100,12 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			return new BaseVisualSector(s);
 		}
 		
+		// This creates a visual thing
+		protected override VisualThing CreateVisualThing(Thing t)
+		{
+			return new BaseVisualThing(t);
+		}
+		
 		// This locks the target so that it isn't changed until unlocked
 		public void LockTarget()
 		{
@@ -122,26 +128,36 @@ namespace CodeImp.DoomBuilder.BuilderModes
 			VisualPickResult newtarget = PickObject(start, start + delta);
 			
 			// Object changed?
-			if(newtarget.geometry != target.geometry)
+			if(newtarget.picked != target.picked)
 			{
 				// Any result?
-				if(newtarget.geometry != null)
+				if(newtarget.picked != null)
 				{
-					if(newtarget.geometry.Sidedef != null)
+					VisualGeometry prevgeo = null;
+					if((target.picked != null) && (target.picked is VisualGeometry))
+						prevgeo = (target.picked as VisualGeometry);
+					
+					// Geometry picked?
+					if(newtarget.picked is VisualGeometry)
 					{
-						if((target.geometry != null) && (target.geometry.Sidedef == null)) General.Interface.HideInfo();
+						VisualGeometry pickedgeo = (newtarget.picked as VisualGeometry);
-						General.Interface.ShowLinedefInfo(newtarget.geometry.Sidedef.Line);
+						
+						if(pickedgeo.Sidedef != null)
+						{
+							if((prevgeo != null) && (prevgeo.Sidedef == null)) General.Interface.HideInfo();
+							General.Interface.ShowLinedefInfo(pickedgeo.Sidedef.Line);
 						}
-					else if(newtarget.geometry.Sidedef == null)
+						else if(pickedgeo.Sidedef == null)
 						{
-						if((target.geometry == null) || (target.geometry.Sidedef != null)) General.Interface.HideInfo();
+							if((prevgeo == null) || (prevgeo.Sidedef != null)) General.Interface.HideInfo();
-						General.Interface.ShowSectorInfo(newtarget.geometry.Sector.Sector);
+							General.Interface.ShowSectorInfo(pickedgeo.Sector.Sector);
 						}
 						else
 						{
 							General.Interface.HideInfo();
 						}
 					}
+				}
 				else
 				{
 					General.Interface.HideInfo();
@@ -155,9 +171,9 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		// This changes the target's height
 		private void ChangeTargetHeight(int amount)
 		{
-			if(target.geometry is BaseVisualGeometrySector)
+			if(target.picked is BaseVisualGeometrySector)
 			{
-				BaseVisualGeometrySector vgs = (target.geometry as BaseVisualGeometrySector);
+				BaseVisualGeometrySector vgs = (target.picked as BaseVisualGeometrySector);
 				vgs.ChangeHeight(amount);
 
 				// Rebuild sector
@@ -240,25 +256,25 @@ namespace CodeImp.DoomBuilder.BuilderModes
 		[BeginAction("visualselect", BaseAction = true)]
 		public void BeginSelect()
 		{
-			if(target.geometry != null) (target.geometry as BaseVisualGeometry).OnSelectBegin();
+			if(target.picked != null) (target.picked as BaseVisualGeometry).OnSelectBegin();
 		}
 
 		[EndAction("visualselect", BaseAction = true)]
 		public void EndSelect()
 		{
-			if(target.geometry != null) (target.geometry as BaseVisualGeometry).OnSelectEnd();
+			if(target.picked != null) (target.picked as BaseVisualGeometry).OnSelectEnd();
 		}
 
 		[BeginAction("visualedit", BaseAction = true)]
 		public void BeginEdit()
 		{
-			if(target.geometry != null) (target.geometry as BaseVisualGeometry).OnEditBegin();
+			if(target.picked != null) (target.picked as BaseVisualGeometry).OnEditBegin();
 		}
 
 		[EndAction("visualedit", BaseAction = true)]
 		public void EndEdit()
 		{
-			if(target.geometry != null) (target.geometry as BaseVisualGeometry).OnEditEnd();
+			if(target.picked != null) (target.picked as BaseVisualGeometry).OnEditEnd();
 		}
 
 		[BeginAction("raisesector8")]

Source/BuilderModes/VisualModes/BaseVisualThing.cs

@@ -0,0 +1,67 @@
+
+#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;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Text;
+using System.Windows.Forms;
+using System.IO;
+using System.Reflection;
+using CodeImp.DoomBuilder.Windows;
+using CodeImp.DoomBuilder.IO;
+using CodeImp.DoomBuilder.Map;
+using CodeImp.DoomBuilder.Rendering;
+using CodeImp.DoomBuilder.Geometry;
+using CodeImp.DoomBuilder.Editing;
+using CodeImp.DoomBuilder.VisualModes;
+
+#endregion
+
+namespace CodeImp.DoomBuilder.BuilderModes
+{
+	internal class BaseVisualThing : VisualThing
+	{
+		#region ================== Constants
+
+		#endregion
+
+		#region ================== Variables
+
+		#endregion
+
+		#region ================== Properties
+
+		#endregion
+
+		#region ================== Constructor / Disposer
+
+		// Constructor
+		public BaseVisualThing(Thing t) : base(t)
+		{
+			
+		}
+
+		#endregion
+
+		#region ================== Methods
+
+		#endregion
+	}
+}

Source/VisualModes/IVisualPickable.cs

@@ -0,0 +1,48 @@
+
+#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;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Text;
+using System.Windows.Forms;
+using System.IO;
+using System.Reflection;
+using System.Drawing;
+using System.ComponentModel;
+using CodeImp.DoomBuilder.Map;
+using SlimDX.Direct3D9;
+using SlimDX;
+using CodeImp.DoomBuilder.Geometry;
+using System.Drawing.Imaging;
+using CodeImp.DoomBuilder.Data;
+using CodeImp.DoomBuilder.Editing;
+using CodeImp.DoomBuilder.IO;
+using CodeImp.DoomBuilder.Rendering;
+
+#endregion
+
+namespace CodeImp.DoomBuilder.VisualModes
+{
+	public interface IVisualPickable
+	{
+		bool PickFastReject(Vector3D from, Vector3D to, Vector3D dir);
+		bool PickAccurate(Vector3D from, Vector3D to, Vector3D dir, ref float u_ray);
+	}
+}

Source/VisualModes/VisualBlockEntry.cs

@@ -44,12 +44,14 @@ namespace CodeImp.DoomBuilder.VisualModes
 		
 		// Members
 		private List<Linedef> lines;
+		private List<Thing> things;
 		
 		#endregion
 		
 		#region ================== Properties
 		
 		public List<Linedef> Lines { get { return lines; } }
+		public List<Thing> Things { get { return things; } }
 		
 		#endregion
 		
@@ -58,7 +60,8 @@ namespace CodeImp.DoomBuilder.VisualModes
 		// Constructor for empty block
 		internal VisualBlockEntry()
 		{
-			lines = new List<Linedef>();
+			lines = new List<Linedef>(2);
+			things = new List<Thing>(2);
 		}
 		
 		#endregion

Source/VisualModes/VisualBlockMap.cs

@@ -271,6 +271,20 @@ namespace CodeImp.DoomBuilder.VisualModes
 			return entries;
 		}
 
+		// This puts a thing in the blockmap
+		public void AddThingsSet(ICollection<Thing> things)
+		{
+			foreach(Thing t in things) AddThing(t);
+		}
+		
+		// This puts a thing in the blockmap
+		public void AddThing(Thing t)
+		{
+			Point p = GetBlockCoordinates(t.Position);
+			VisualBlockEntry block = GetBlock(p);
+			block.Things.Add(t);
+		}
+		
 		// This puts a whole set of linedefs in the blocks they cross
 		public void AddLinedefsSet(ICollection<Linedef> lines)
 		{

Source/VisualModes/VisualGeometry.cs

@@ -40,7 +40,7 @@ using CodeImp.DoomBuilder.Rendering;
 
 namespace CodeImp.DoomBuilder.VisualModes
 {
-	public abstract class VisualGeometry : IComparable<VisualGeometry>
+	public abstract class VisualGeometry : IVisualPickable, IComparable<VisualGeometry>
 	{
 		#region ================== Variables
 

Source/VisualModes/VisualMode.cs

@@ -76,8 +76,10 @@ namespace CodeImp.DoomBuilder.VisualModes
 
 		// Map
 		protected VisualBlockMap blockmap;
+		protected Dictionary<Thing, VisualThing> allthings;
 		protected Dictionary<Sector, VisualSector> allsectors;
 		protected List<VisualBlockEntry> visibleblocks;
+		protected List<VisualThing> visiblethings;
 		protected Dictionary<Sector, VisualSector> visiblesectors;
 		protected List<VisualGeometry> visiblegeometry;
 		
@@ -105,9 +107,11 @@ namespace CodeImp.DoomBuilder.VisualModes
 			this.camanglez = Angle2D.PI;
 			this.blockmap = new VisualBlockMap();
 			this.allsectors = new Dictionary<Sector, VisualSector>(General.Map.Map.Sectors.Count);
+			this.allthings = new Dictionary<Thing,VisualThing>(General.Map.Map.Things.Count);
 			this.visibleblocks = new List<VisualBlockEntry>();
 			this.visiblesectors = new Dictionary<Sector, VisualSector>(50);
 			this.visiblegeometry = new List<VisualGeometry>(200);
+			this.visiblethings = new List<VisualThing>(100);
 		}
 		
 		// Disposer
@@ -122,7 +126,9 @@ namespace CodeImp.DoomBuilder.VisualModes
 				visiblesectors = null;
 				visiblegeometry = null;
 				visibleblocks = null;
+				visiblethings = null;
 				allsectors = null;
+				allthings = null;
 				blockmap = null;
 				
 				// Done
@@ -199,9 +205,11 @@ namespace CodeImp.DoomBuilder.VisualModes
 			base.OnUndoEnd();
 
 			allsectors.Clear();
+			allthings.Clear();
 			visiblesectors.Clear();
 			visibleblocks.Clear();
 			visiblegeometry.Clear();
+			visiblethings.Clear();
 			
 			// Make new blockmap
 			if(blockmap != null)
@@ -230,9 +238,11 @@ namespace CodeImp.DoomBuilder.VisualModes
 			base.OnRedoEnd();
 
 			allsectors.Clear();
+			allthings.Clear();
 			visiblesectors.Clear();
 			visibleblocks.Clear();
 			visiblegeometry.Clear();
+			visiblethings.Clear();
 			
 			// Make new blockmap
 			if(blockmap != null)
@@ -349,8 +359,10 @@ namespace CodeImp.DoomBuilder.VisualModes
 			// Fill visiblity collections
 			visiblesectors = new Dictionary<Sector, VisualSector>(visiblesectors.Count);
 			visiblegeometry = new List<VisualGeometry>(visiblegeometry.Capacity);
+			visiblethings = new List<VisualThing>(visiblethings.Capacity);
 			foreach(VisualBlockEntry block in visibleblocks)
 			{
+				// Lines
 				foreach(Linedef ld in block.Lines)
 				{
 					// Line not already processed?
@@ -372,6 +384,25 @@ namespace CodeImp.DoomBuilder.VisualModes
 						}
 					}
 				}
+				
+				// Things
+				foreach(Thing t in block.Things)
+				{
+					VisualThing vt;
+					
+					if(allthings.ContainsKey(t))
+					{
+						vt = allthings[t];
+					}
+					else
+					{
+						// Create new visual thing
+						vt = CreateVisualThing(t);
+						allthings.Add(t, vt);
+					}
+					
+					visiblethings.Add(vt);
+				}
 			}
 			
 			// Find camera sector
@@ -475,7 +506,7 @@ namespace CodeImp.DoomBuilder.VisualModes
 			Vector3D delta = to - from;
 			
 			// Setup no result
-			result.geometry = null;
+			result.picked = null;
 			result.hitpos = new Vector3D();
 			result.u_ray = 1.0f;
 			
@@ -485,14 +516,14 @@ namespace CodeImp.DoomBuilder.VisualModes
 			// Make collections
 			Dictionary<Linedef, Linedef> lines = new Dictionary<Linedef, Linedef>(blocks.Count * 10);
 			Dictionary<Sector, VisualSector> sectors = new Dictionary<Sector, VisualSector>(blocks.Count * 10);
-			List<VisualGeometry> potentialgeometry = new List<VisualGeometry>(blocks.Count * 10);
+			List<IVisualPickable> pickables = new List<IVisualPickable>(blocks.Count * 10);
 			
 			// Add geometry from the camera sector
 			if((camsector != null) && allsectors.ContainsKey(camsector))
 			{
 				VisualSector vs = allsectors[camsector];
 				sectors.Add(camsector, vs);
-				potentialgeometry.AddRange(vs.FixedGeometry);
+				foreach(VisualGeometry g in vs.FixedGeometry) pickables.Add(g);
 			}
 			
 			// Go for all lines to see which ones we intersect
@@ -531,16 +562,18 @@ namespace CodeImp.DoomBuilder.VisualModes
 									if(!sectors.ContainsKey(ld.Front.Sector))
 									{
 										sectors.Add(ld.Front.Sector, vs);
-										potentialgeometry.AddRange(vs.FixedGeometry);
+										foreach(VisualGeometry g in vs.FixedGeometry) pickables.Add(g);
 									}
 									
 									// Add sidedef if on the front side
 									if(side < 0.0f)
 									{
-										int previndex = potentialgeometry.Count;
+										List<VisualGeometry> sidedefgeo = vs.GetSidedefGeometry(ld.Front);
-										potentialgeometry.AddRange(vs.GetSidedefGeometry(ld.Front));
+										foreach(VisualGeometry g in sidedefgeo)
-										for(int i = previndex; i < potentialgeometry.Count; i++)
+										{
-											potentialgeometry[i].SetPickResults(intersect, u);
+											g.SetPickResults(intersect, u);
+											pickables.Add(g);
+										}
 									}
 								}
 							}
@@ -557,16 +590,18 @@ namespace CodeImp.DoomBuilder.VisualModes
 									if(!sectors.ContainsKey(ld.Back.Sector))
 									{
 										sectors.Add(ld.Back.Sector, vs);
-										potentialgeometry.AddRange(vs.FixedGeometry);
+										foreach(VisualGeometry g in vs.FixedGeometry) pickables.Add(g);
 									}
 
 									// Add sidedef if on the front side
 									if(side > 0.0f)
 									{
-										int previndex = potentialgeometry.Count;
+										List<VisualGeometry> sidedefgeo = vs.GetSidedefGeometry(ld.Back);
-										potentialgeometry.AddRange(vs.GetSidedefGeometry(ld.Back));
+										foreach(VisualGeometry g in sidedefgeo)
-										for(int i = previndex; i < potentialgeometry.Count; i++)
+										{
-											potentialgeometry[i].SetPickResults(intersect, u);
+											g.SetPickResults(intersect, u);
+											pickables.Add(g);
+										}
 									}
 								}
 							}
@@ -580,24 +615,24 @@ namespace CodeImp.DoomBuilder.VisualModes
 			// This is still too much for accurate intersection testing, so we do a fast reject pass first.
 			Vector3D direction = to - from;
 			direction = direction.GetNormal();
-			List<VisualGeometry> likelygeometry = new List<VisualGeometry>(potentialgeometry.Count);
+			List<IVisualPickable> potentialpicks = new List<IVisualPickable>(pickables.Count);
-			foreach(VisualGeometry g in potentialgeometry)
+			foreach(IVisualPickable p in pickables)
 			{
-				if(g.PickFastReject(from, to, direction)) likelygeometry.Add(g);
+				if(p.PickFastReject(from, to, direction)) potentialpicks.Add(p);
 			}
 			
 			// Now we do an accurate intersection test for all resulting geometry
 			// We keep only the closest hit!
-			foreach(VisualGeometry g in likelygeometry)
+			foreach(IVisualPickable p in potentialpicks)
 			{
 				float u = result.u_ray;
-				if(g.PickAccurate(from, to, direction, ref u))
+				if(p.PickAccurate(from, to, direction, ref u))
 				{
 					// Closer than previous find?
 					if((u > 0.0f) && (u < result.u_ray))
 					{
 						result.u_ray = u;
-						result.geometry = g;
+						result.picked = p;
 					}
 				}
 			}
@@ -616,6 +651,9 @@ namespace CodeImp.DoomBuilder.VisualModes
 		// This creates a visual sector
 		protected abstract VisualSector CreateVisualSector(Sector s);
 
+		// This creates a visual thing
+		protected abstract VisualThing CreateVisualThing(Thing t);
+		
 		// This returns a visual sector
 		protected VisualSector GetVisualSector(Sector s)
 		{
@@ -632,6 +670,7 @@ namespace CodeImp.DoomBuilder.VisualModes
 		protected virtual void FillBlockMap()
 		{
 			blockmap.AddLinedefsSet(General.Map.Map.Linedefs);
+			blockmap.AddThingsSet(General.Map.Map.Things);
 		}
 		
 		// Processing

Source/VisualModes/VisualPickResult.cs

@@ -41,7 +41,7 @@ namespace CodeImp.DoomBuilder.VisualModes
 	public struct VisualPickResult
 	{
 		// Members
-		public VisualGeometry geometry;
+		public IVisualPickable picked;
 		public float u_ray;
 		public Vector3D hitpos;
 	}

Source/VisualModes/VisualSector.cs

@@ -69,6 +69,7 @@ namespace CodeImp.DoomBuilder.VisualModes
 		internal List<VisualGeometry> AllGeometry { get { return allgeometry; } }
 		internal VertexBuffer GeometryBuffer { get { return geobuffer; } }
 		internal bool NeedsUpdateGeo { get { return updategeo; } set { updategeo |= value; } }
+		
 		public bool IsDisposed { get { return isdisposed; } }
 		public Sector Sector { get { return sector; } }
 		

Source/VisualModes/VisualThing.cs

@@ -40,7 +40,7 @@ using CodeImp.DoomBuilder.Rendering;
 
 namespace CodeImp.DoomBuilder.VisualModes
 {
-	public abstract class VisualThing : IComparable<VisualThing>
+	public abstract class VisualThing : IVisualPickable, ID3DResource, IComparable<VisualThing>
 	{
 		#region ================== Constants
 		
@@ -51,11 +51,32 @@ namespace CodeImp.DoomBuilder.VisualModes
 		// Thing
 		private Thing thing;
 		
+		// Texture
+		private ImageData texture;
+		
+		// Geometry
+		private WorldVertex[] spritevertices;
+		private WorldVertex[] cagevertices;
+		private VertexBuffer geobuffer;
+		private bool updategeo;
+		private int spritetriangles;
+		private int cagetriangles;
+		
+		// Disposing
+		private bool isdisposed = false;
+		
 		#endregion
 		
 		#region ================== Properties
 		
+		internal VertexBuffer GeometryBuffer { get { return geobuffer; } }
+		internal bool NeedsUpdateGeo { get { return updategeo; } }
+		internal int SpriteTriangles { get { return spritetriangles; } }
+		internal int CageTriangles { get { return cagetriangles; } }
+		internal int CageOffset { get { return spritevertices.Length; } }
+		
 		public Thing Thing { get { return thing; } }
+		public bool IsDisposed { get { return isdisposed; } }
 		
 		#endregion
 		
@@ -66,16 +87,122 @@ namespace CodeImp.DoomBuilder.VisualModes
 		{
 			// Initialize
 			this.thing = t;
+			
+			// Register as resource
+			General.Map.Graphics.RegisterResource(this);
+		}
+
+		// Disposer
+		public virtual void Dispose()
+		{
+			// Not already disposed?
+			if(!isdisposed)
+			{
+				// Clean up
+				if(geobuffer != null) geobuffer.Dispose();
+				geobuffer = null;
+
+				// Unregister resource
+				General.Map.Graphics.UnregisterResource(this);
+
+				// Done
+				isdisposed = true;
+			}
 		}
 		
 		#endregion
 		
 		#region ================== Methods
 		
+		// This is called before a device is reset
+		// (when resized or display adapter was changed)
+		public void UnloadResource()
+		{
+			// Trash geometry buffer
+			if(geobuffer != null) geobuffer.Dispose();
+			geobuffer = null;
+			updategeo = true;
+		}
+		
+		// This is called resets when the device is reset
+		// (when resized or display adapter was changed)
+		public void ReloadResource()
+		{
+			// Make new geometry
+			//Update();
+		}
+		
 		// This compares for sorting by sprite
 		public int CompareTo(VisualThing other)
 		{
-			return 0;
+			return Math.Sign(this.texture.LongName - other.texture.LongName);
+		}
+		
+		// This sets the vertices for the thing sprite
+		protected void SetSpriteVertices(ICollection<WorldVertex> verts)
+		{
+			// Copy vertices
+			spritevertices = new WorldVertex[verts.Count];
+			verts.CopyTo(spritevertices, 0);
+			spritetriangles = spritevertices.Length / 3;
+			updategeo = true;
+		}
+		
+		// This sets the vertices for the thing cage
+		protected void SetCageVertices(ICollection<WorldVertex> verts)
+		{
+			// Copy vertices
+			cagevertices = new WorldVertex[verts.Count];
+			verts.CopyTo(cagevertices, 0);
+			cagetriangles = cagevertices.Length / 3;
+			updategeo = true;
+		}
+
+		// This updates the visual sector
+		public void Update()
+		{
+			// Trash geometry buffer
+			if(geobuffer != null) geobuffer.Dispose();
+			geobuffer = null;
+			
+			// Count the number of vertices there are
+			int numverts = spritevertices.Length + cagevertices.Length;
+			
+			// Any vertics?
+			if(numverts > 0)
+			{
+				// Make a new buffer
+				geobuffer = new VertexBuffer(General.Map.Graphics.Device, WorldVertex.Stride * numverts,
+											 Usage.WriteOnly | Usage.Dynamic, VertexFormat.None, Pool.Default);
+				
+				// Fill the buffer
+				DataStream bufferstream = geobuffer.Lock(0, WorldVertex.Stride * numverts, LockFlags.Discard);
+				bufferstream.WriteRange<WorldVertex>(spritevertices);
+				bufferstream.WriteRange<WorldVertex>(cagevertices);
+				geobuffer.Unlock();
+				bufferstream.Dispose();
+			}
+			
+			// Done
+			updategeo = false;
+		}
+		
+		/// <summary>
+		/// This is called when the thing must be tested for line intersection. This should reject
+		/// as fast as possible to rule out all geometry that certainly does not touch the line.
+		/// </summary>
+		public virtual bool PickFastReject(Vector3D from, Vector3D to, Vector3D dir)
+		{
+			return false;
+		}
+		
+		/// <summary>
+		/// This is called when the thing must be tested for line intersection. This should perform
+		/// accurate hit detection and set u_ray to the position on the ray where this hits the geometry.
+		/// </summary>
+		public virtual bool PickAccurate(Vector3D from, Vector3D to, Vector3D dir, ref float u_ray)
+		{
+			return false;
 		}
 		
 		#endregion