A 3D box aligned with the x/y/z axes.
This class represents a simple box which is aligned with the axes. It stores 2 points as the extremeties of the box, one which is the minima of all 3 axes, and the other which is the maxima of all 3 axes. This class is typically used for an axis-aligned bounding box (AABB) for collision and visibility determination.
Inheritance: ICloneable
Beispiel #1
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		public PCZCamera( string name, SceneManager sceneManager )
			: base( name, sceneManager )
		{
			this.box = new AxisAlignedBox( new Vector3( -0.1f, -0.1f, -0.1f ), new Vector3( 0.1f, 0.1f, 0.1f ) );
			this.extraCullingFrustum = new PCZFrustum();
			this.extraCullingFrustum.SetUseOriginPlane( true );
		}
		public void Merge( AxisAlignedBox boxBounds, Sphere sphereBounds, Camera cam, bool receiver )
		{
			aabb.Merge( boxBounds );
			if ( receiver )
				receiverAabb.Merge( boxBounds );
			Real camDistToCenter = ( cam.DerivedPosition - sphereBounds.Center ).Length;
			minDistance = System.Math.Min( minDistance, System.Math.Max( (Real)0, camDistToCenter - sphereBounds.Radius ) );
			maxDistance = System.Math.Max( maxDistance, camDistToCenter + sphereBounds.Radius );
		}
Beispiel #3
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		public OctreeZone( PCZSceneManager creator, string name )
			: base( creator, name )
		{
			mZoneTypeName = "ZoneType_Octree";
			// init octree
			AxisAlignedBox b = new AxisAlignedBox( new Vector3( -10000, -10000, -10000 ), new Vector3( 10000, 10000, 10000 ) );
			int depth = 8;
			rootOctree = null;
			Init( b, depth );
		}
Beispiel #4
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		/// <summary>
		/// Default ctor.
		/// </summary>
		/// <param name="radius">Radius of orbits</param>
		/// <param name="count">Number of quads</param>
		/// <param name="qSize">Size of quads</param>
		public ThingRendable( float radius, int count, float qSize )
		{
			this.radius = radius;
			this.count = count;
			this.qSize = qSize;

			box = new AxisAlignedBox( new Vector3( -radius, -radius, -radius ), new Vector3( radius, radius, radius ) );
			Initialize();
			FillBuffer();
		}
        public void TestMergePoint()
        {
            AxisAlignedBox actual = new AxisAlignedBox( new Vector3(0,0,0), new Vector3(50,50,50));
            AxisAlignedBox expected = new AxisAlignedBox(new Vector3(0, 0, 0), new Vector3(150, 150, 150));

            Vector3 point = new Vector3(150, 150, 150);

            actual.Merge(point);

            Assert.AreEqual(expected, actual);
        }
Beispiel #6
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		/// <summary>
		/// 
		/// </summary>
		/// <param name="slices"></param>
		/// <param name="size"></param>
		/// <param name="texture"></param>
		public VolumeRendable( int slices, int size, string texture )
		{
			this.slices = slices;
			this.size = size;
			this.texture = texture;

			this.radius = Utility.Sqrt( size*size + size*size + size*size )/2.0f;
			box = new AxisAlignedBox( new Vector3( -size, -size, -size ), new Vector3( size, size, size ) );

			CastShadows = false;

			Initialize();
		}
Beispiel #7
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 private GeometryBucket(MaterialBucket parent, String formatString, GeometryBucket bucket)
     : base()
 {
     mParent       = parent;
     mFormatString = formatString;
     mBatch        = mParent.Parent.Parent.Parent;
     if (mBatch.BaseSkeleton != null)
     {
         SetCustomParameter(0, new Vector4(mBatch.BaseSkeleton.BoneCount, 0, 0, 0));
     }
     renderOperation = bucket.RenderOperation;
     mVertexData     = renderOperation.vertexData;
     mIndexData      = renderOperation.indexData;
     BoundingBox     = new BoundingBox(new Vector3(-10000, -10000, -10000), new Vector3(10000, 10000, 10000));
 }
Beispiel #8
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		public void Init( AxisAlignedBox box, int depth )
		{
			if ( null != rootOctree )
				rootOctree = null;

			rootOctree = new Octree( this, null );

			maxDepth = depth;
			this.box = box;

			rootOctree.Box = box;

			Vector3 min = box.Minimum;

			Vector3 max = box.Maximum;

			rootOctree.HalfSize = ( max - min ) / 2;
		}
Beispiel #9
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		// this version checks against extra culling planes
		public new bool IsObjectVisible( AxisAlignedBox bound, out FrustumPlane culledBy )
		{
			culledBy = FrustumPlane.None;

			// Null boxes always invisible
			if ( bound.IsNull )
			{
				return false;
			}

			// infinite boxes always visible
			if ( bound.IsInfinite )
			{
				return true;
			}

			// Make any pending updates to the calculated frustum planes
			UpdateFrustumPlanes();

			// check extra culling planes
			bool extraResults;
			extraResults = this.extraCullingFrustum.IsObjectVisible( bound );
			if ( !extraResults )
			{
				return false;
			}

			// check "regular" camera frustum
			bool regcamresults = base.IsObjectVisible( bound, out culledBy );

			if ( !regcamresults )
			{
				// culled by regular culling planes
				return regcamresults;
			}


			return true;
		}
Beispiel #10
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        /// <summary>
        ///		Allows for merging two boxes together (combining).
        /// </summary>
        /// <param name="box">Source box.</param>
        public void Merge(AxisAlignedBox box)
        {
            if (box.IsNull)
            {
                // nothing to merge with in this case, just return
                return;
            }
            else if (box.IsInfinite)
            {
                this.IsInfinite = true;
            }
            else if (this.IsNull)
            {
                SetExtents(box.Minimum, box.Maximum);
            }
            else if (!this.IsInfinite)
            {
                minVector.Floor(box.Minimum);
                maxVector.Ceil(box.Maximum);

                UpdateCorners();
            }
        }
Beispiel #11
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		public OctreeSceneManager( string name )
			: base( name )
		{
			Vector3 Min = new Vector3( -500f, -500f, -500f );
			Vector3 Max = new Vector3( 500f, 500f, 500f );
			int depth = 5;

			AxisAlignedBox box = new AxisAlignedBox( Min, Max );

			Init( box, depth );
		}
Beispiel #12
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		protected void SetBounds( AxisAlignedBox box, float radius )
		{
			this.aab = box;
			this.boundingRadius = radius;
		}
Beispiel #13
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        /// <summary>
        ///		Calculate the area of intersection of this box and another
        /// </summary>
        public AxisAlignedBox Intersection(AxisAlignedBox b2)
        {
            if (!Intersects(b2))
            {
                return(new AxisAlignedBox());
            }

            Vector3 intMin = Vector3.Zero;
            Vector3 intMax = Vector3.Zero;

            Vector3 b2max = b2.maxVector;
            Vector3 b2min = b2.minVector;

            if (b2max.x > maxVector.x && maxVector.x > b2min.x)
            {
                intMax.x = maxVector.x;
            }
            else
            {
                intMax.x = b2max.x;
            }
            if (b2max.y > maxVector.y && maxVector.y > b2min.y)
            {
                intMax.y = maxVector.y;
            }
            else
            {
                intMax.y = b2max.y;
            }
            if (b2max.z > maxVector.z && maxVector.z > b2min.z)
            {
                intMax.z = maxVector.z;
            }
            else
            {
                intMax.z = b2max.z;
            }

            if (b2min.x < minVector.x && minVector.x < b2max.x)
            {
                intMin.x = minVector.x;
            }
            else
            {
                intMin.x = b2min.x;
            }
            if (b2min.y < minVector.y && minVector.y < b2max.y)
            {
                intMin.y = minVector.y;
            }
            else
            {
                intMin.y = b2min.y;
            }
            if (b2min.z < minVector.z && minVector.z < b2max.z)
            {
                intMin.z = minVector.z;
            }
            else
            {
                intMin.z = b2min.z;
            }

            return(new AxisAlignedBox(intMin, intMax));
        }
 public AxisAlignedBox( AxisAlignedBox box )
 {
     SetExtents( box.Minimum, box.Maximum );
     isNull = box.IsNull;
     isInfinite = box.IsInfinite;
 }
Beispiel #15
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		/// <summary>
		///		Internal method for locating a list of shadow casters which
		///		could be affecting the frustum for a given light.
		/// </summary>
		/// <remarks>
		///		Custom scene managers are encouraged to override this method to add optimizations,
		///		and to add their own custom shadow casters (perhaps for world geometry)
		/// </remarks>
		/// <param name="light"></param>
		/// <param name="camera"></param>
		protected virtual IList FindShadowCastersForLight( Light light, Camera camera )
		{
			this.shadowCasterList.Clear();

			if ( light.Type == LightType.Directional )
			{
				// Basic AABB query encompassing the frustum and the extrusion of it
				AxisAlignedBox aabb = new AxisAlignedBox();
				Vector3[] corners = camera.WorldSpaceCorners;
				Vector3 min, max;
				Vector3 extrude = light.DerivedDirection * -this.shadowDirLightExtrudeDist;
				// do first corner
				min = max = corners[ 0 ];
				min.Floor( corners[ 0 ] + extrude );
				max.Ceil( corners[ 0 ] + extrude );
				for ( int c = 1; c < 8; ++c )
				{
					min.Floor( corners[ c ] );
					max.Ceil( corners[ c ] );
					min.Floor( corners[ c ] + extrude );
					max.Ceil( corners[ c ] + extrude );
				}
				aabb.SetExtents( min, max );

				if ( this.shadowCasterAABBQuery == null )
				{
					this.shadowCasterAABBQuery = this.CreateAABBRegionQuery( aabb );
				}
				else
				{
					this.shadowCasterAABBQuery.Box = aabb;
				}
				// Execute, use callback
				this.shadowCasterQueryListener.Prepare( false,
														light.GetFrustumClipVolumes( camera ),
														light,
														camera,
														this.shadowCasterList,
														light.ShadowFarDistanceSquared );
				this.shadowCasterAABBQuery.Execute( this.shadowCasterQueryListener );
			}
			else
			{
				Sphere s = new Sphere( light.DerivedPosition, light.AttenuationRange );

				// eliminate early if camera cannot see light sphere
				if ( camera.IsObjectVisible( s ) )
				{
					// create or init a sphere region query
					if ( this.shadowCasterSphereQuery == null )
					{
						this.shadowCasterSphereQuery = this.CreateSphereRegionQuery( s );
					}
					else
					{
						this.shadowCasterSphereQuery.Sphere = s;
					}

					// check if the light is within view of the camera
					bool lightInFrustum = camera.IsObjectVisible( light.DerivedPosition );

					PlaneBoundedVolumeList volumeList = null;

					// Only worth building an external volume list if
					// light is outside the frustum
					if ( !lightInFrustum )
					{
						volumeList = light.GetFrustumClipVolumes( camera );
					}

					// prepare the query and execute using the callback
					this.shadowCasterQueryListener.Prepare(
						lightInFrustum,
						volumeList,
						light,
						camera,
						this.shadowCasterList,
						light.ShadowFarDistanceSquared );

					this.shadowCasterSphereQuery.Execute( this.shadowCasterQueryListener );
				}
			}

			return this.shadowCasterList;
		}
Beispiel #16
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		/// <summary>
		///		Creates a <see cref="AxisAlignedBoxRegionSceneQuery"/> for this scene manager.
		/// </summary>
		/// <remarks>
		///		This method creates a new instance of a query object for this scene manager,
		///		for querying for objects within a AxisAlignedBox region.
		/// </remarks>
		/// <param name="box">AxisAlignedBox to use for the region query.</param>
		/// <param name="mask">Custom user defined flags to use for the query.</param>
		/// <returns>A specialized implementation of AxisAlignedBoxRegionSceneQuery for this scene manager.</returns>
		public virtual AxisAlignedBoxRegionSceneQuery CreateAABBRegionQuery( AxisAlignedBox box, uint mask )
		{
			DefaultAxisAlignedBoxRegionSceneQuery query = new DefaultAxisAlignedBoxRegionSceneQuery( this );
			query.Box = box;
			query.QueryMask = mask;

			return query;
		}
Beispiel #17
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		/// <summary>
		///		Adds a bounding box to draw if turned on.
		/// </summary>
		protected void AddBoundingBox( AxisAlignedBox aab, bool visible )
		{
		}
Beispiel #18
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		/* get the aabb of the zone - default implementation
		   uses the enclosure node, but there are other perhaps
		   better ways
		*/

		public virtual void GetAABB( ref AxisAlignedBox aabb )
		{
			// if there is no node, just return a null box
			if ( null == this.mEnclosureNode )
			{
				aabb = AxisAlignedBox.Null;
			}
			else
			{
				aabb = this.mEnclosureNode.WorldAABB;
				// since this is the "local" AABB, subtract out any translations
				aabb.Minimum = aabb.Minimum - this.mEnclosureNode.DerivedPosition;
				aabb.Maximum = aabb.Maximum - this.mEnclosureNode.DerivedPosition;
			}
		}
Beispiel #19
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		/*public void AddOctreeNode(OctreeNode node, Octree octree)
		{


		}*/

		/** Resizes the octree to the given size */
		public void Resize( AxisAlignedBox box )
		{
			NodeCollection nodes = new NodeCollection();

			FindNodes( this.octree.Box, base.sceneNodeList, null, true, this.octree );

			octree = new Octree( null );
			octree.Box = box;

			foreach ( OctreeNode node in nodes.Values )
			{
				node.Octant = null;
				UpdateOctreeNode( node );
			}
		}
Beispiel #20
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		public Intersection Intersect( Sphere sphere, AxisAlignedBox box )
		{
			intersect++;
			float Radius = sphere.Radius;
			Vector3 Center = sphere.Center;
			Vector3[] Corners = box.Corners;
			float s = 0;
			float d = 0;
			int i;
			bool Partial;

			Radius *= Radius;

			Vector3 MinDistance = ( Corners[ 0 ] - Center );
			Vector3 MaxDistance = ( Corners[ 4 ] - Center );

			if ( ( MinDistance.LengthSquared < Radius ) && ( MaxDistance.LengthSquared < Radius ) )
			{
				return Intersection.Inside;
			}

			//find the square of the distance
			//from the sphere to the box
			for ( i = 0; i < 3; i++ )
			{
				if ( Center[ i ] < Corners[ 0 ][ i ] )
				{
					s = Center[ i ] - Corners[ 0 ][ i ];
					d += s * s;
				}

				else if ( Center[ i ] > Corners[ 4 ][ i ] )
				{
					s = Center[ i ] - Corners[ 4 ][ i ];
					d += s * s;
				}
			}

			Partial = ( d <= Radius );

			if ( !Partial )
			{
				return Intersection.Outside;
			}
			else
			{
				return Intersection.Intersect;
			}
		}
Beispiel #21
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		public OctreeSceneManager( string name, AxisAlignedBox box, int max_depth )
			: base( name )
		{
			Init( box, max_depth );
		}
Beispiel #22
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 public AxisAlignedBox(AxisAlignedBox box)
 {
     SetExtents(box.Minimum, box.Maximum);
     isNull     = box.IsNull;
     isInfinite = box.IsInfinite;
 }
Beispiel #23
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 /// <summary>
 ///    Tests whether this ray intersects the given box.
 /// </summary>
 /// <param name="box"></param>
 /// <returns>
 ///		Struct containing info on whether there was a hit, and the distance from the
 ///		origin of this ray where the intersect happened.
 ///	</returns>
 public IntersectResult Intersects(AxisAlignedBox box)
 {
     return(Utility.Intersects(this, box));
 }
Beispiel #24
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		public Intersection Intersect( AxisAlignedBox box1, AxisAlignedBox box2 )
		{
			intersect++;
			Vector3[] outside = box1.Corners;
			Vector3[] inside = box2.Corners;

			if ( inside[ 4 ].x < outside[ 0 ].x ||
				inside[ 4 ].y < outside[ 0 ].y ||
				inside[ 4 ].z < outside[ 0 ].z ||
				inside[ 0 ].x > outside[ 4 ].x ||
				inside[ 0 ].y > outside[ 4 ].y ||
				inside[ 0 ].z > outside[ 4 ].z )
			{

				return Intersection.Outside;
			}

			if ( inside[ 0 ].x > outside[ 0 ].x &&
				inside[ 0 ].y > outside[ 0 ].y &&
				inside[ 0 ].z > outside[ 0 ].z &&
				inside[ 4 ].x < outside[ 4 ].x &&
				inside[ 4 ].y < outside[ 4 ].y &&
				inside[ 4 ].z < outside[ 4 ].z )
			{

				return Intersection.Inside;
			}
			else
			{
				return Intersection.Intersect;
			}
		}
Beispiel #25
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		public new bool IsObjectVisible( AxisAlignedBox box, out FrustumPlane culledBy )
		{
			if ( null != CullFrustum )
			{
				return CullFrustum.IsObjectVisible( box, out culledBy );
			}
			else
			{
				return base.IsObjectVisible( box, out culledBy );
			}
		}
Beispiel #26
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		public void Init( AxisAlignedBox box, int depth )
		{
			rootSceneNode = new OctreeNode( this, "SceneRoot" );
			rootSceneNode.SetAsRootNode();
			defaultRootNode = rootSceneNode;

			maxDepth = depth;

			octree = new Octree( null );

			octree.Box = box;

			Vector3 Min = box.Minimum;
			Vector3 Max = box.Maximum;

			octree.HalfSize = ( Max - Min ) / 2;

			numObjects = 0;

			Vector3 scalar = new Vector3( 1.5f, 1.5f, 1.5f );

			scaleFactor.Scale = scalar;
		}
		public void Merge( AxisAlignedBox boxBounds, Sphere sphereBounds, Camera cam )
		{
			Merge( boxBounds, sphereBounds, cam, true );
		}
Beispiel #28
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		public void FindNodes( AxisAlignedBox box, SceneNodeCollection sceneNodeList, SceneNode exclude, bool full, Octree octant )
		{
			List<OctreeNode> localList = new List<OctreeNode>();
			if ( octant == null )
			{
				octant = this.octree;
			}

			if ( !full )
			{
				AxisAlignedBox obox = octant.CullBounds;

				Intersection isect = this.Intersect( box, obox );

				if ( isect == Intersection.Outside )
				{
					return;
				}

				full = ( isect == Intersection.Inside );
			}

			foreach ( OctreeNode node in octant.NodeList.Values )
			{
				if ( node != exclude )
				{
					if ( full )
					{
						localList.Add( node );
					}
					else
					{
						Intersection nsect = this.Intersect( box, node.WorldAABB );

						if ( nsect != Intersection.Outside )
						{
							localList.Add( node );
						}
					}
				}
			}

			if ( octant.Children[ 0, 0, 0 ] != null )
				FindNodes( box, sceneNodeList, exclude, full, octant.Children[ 0, 0, 0 ] );

			if ( octant.Children[ 1, 0, 0 ] != null )
				FindNodes( box, sceneNodeList, exclude, full, octant.Children[ 1, 0, 0 ] );

			if ( octant.Children[ 0, 1, 0 ] != null )
				FindNodes( box, sceneNodeList, exclude, full, octant.Children[ 0, 1, 0 ] );

			if ( octant.Children[ 1, 1, 0 ] != null )
				FindNodes( box, sceneNodeList, exclude, full, octant.Children[ 1, 1, 0 ] );

			if ( octant.Children[ 0, 0, 1 ] != null )
				FindNodes( box, sceneNodeList, exclude, full, octant.Children[ 0, 0, 1 ] );

			if ( octant.Children[ 1, 0, 1 ] != null )
				FindNodes( box, sceneNodeList, exclude, full, octant.Children[ 1, 0, 1 ] );

			if ( octant.Children[ 0, 1, 1 ] != null )
				FindNodes( box, sceneNodeList, exclude, full, octant.Children[ 0, 1, 1 ] );

			if ( octant.Children[ 1, 1, 1 ] != null )
				FindNodes( box, sceneNodeList, exclude, full, octant.Children[ 1, 1, 1 ] );

		}
Beispiel #29
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 /// <summary>
 ///		Returns whether or not this sphere interects a box.
 /// </summary>
 /// <param name="box"></param>
 /// <returns>True if the box intersects, false otherwise.</returns>
 public bool Intersects(AxisAlignedBox box)
 {
     return(Utility.Intersects(this, box));
 }
Beispiel #30
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		/* Functions for finding Nodes that intersect various shapes */

		public abstract void FindNodes( AxisAlignedBox t, ref List<PCZSceneNode> list, List<Portal> visitedPortals,
		                                bool includeVisitors, bool recurseThruPortals, PCZSceneNode exclude );
        /// <summary>
        ///		Calculate the area of intersection of this box and another
        /// </summary>
        public AxisAlignedBox Intersection( AxisAlignedBox b2 )
        {
            if( !Intersects( b2 ) )
            {
                return new AxisAlignedBox();
            }

            Vector3 intMin = Vector3.Zero;
            Vector3 intMax = Vector3.Zero;

            Vector3 b2max = b2.maxVector;
            Vector3 b2min = b2.minVector;

            if( b2max.x > maxVector.x && maxVector.x > b2min.x )
            {
                intMax.x = maxVector.x;
            }
            else
            {
                intMax.x = b2max.x;
            }
            if( b2max.y > maxVector.y && maxVector.y > b2min.y )
            {
                intMax.y = maxVector.y;
            }
            else
            {
                intMax.y = b2max.y;
            }
            if( b2max.z > maxVector.z && maxVector.z > b2min.z )
            {
                intMax.z = maxVector.z;
            }
            else
            {
                intMax.z = b2max.z;
            }

            if( b2min.x < minVector.x && minVector.x < b2max.x )
            {
                intMin.x = minVector.x;
            }
            else
            {
                intMin.x = b2min.x;
            }
            if( b2min.y < minVector.y && minVector.y < b2max.y )
            {
                intMin.y = minVector.y;
            }
            else
            {
                intMin.y = b2min.y;
            }
            if( b2min.z < minVector.z && minVector.z < b2max.z )
            {
                intMin.z = minVector.z;
            }
            else
            {
                intMin.z = b2min.z;
            }

            return new AxisAlignedBox( intMin, intMax );
        }
Beispiel #32
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		// --- find nodes which intersect various types of BV's ---
		public override void FindNodes( AxisAlignedBox t,
									  ref List<PCZSceneNode> list,
									  List<Portal> visitedPortals,
									  bool includeVisitors,
									  bool recurseThruPortals,
									  PCZSceneNode exclude )
		{
			// if this zone has an enclosure, check against the enclosure AABB first
			if ( null != mEnclosureNode )
			{
				if ( !mEnclosureNode.WorldAABB.Intersects( t ) )
				{
					// AABB of zone does not intersect t, just return.
					return;
				}
			}

			foreach ( PCZSceneNode pczsn in mHomeNodeList )
			{
				if ( pczsn != exclude )
				{
					// make sure node is not already in the list (might have been added in another
					// zone it was visiting)
					if ( !list.Contains( pczsn ) )
					{
						bool nsect = t.Intersects( pczsn.WorldAABB );
						if ( nsect )
						{
							list.Add( pczsn );
						}
					}
				}
			}

			if ( includeVisitors )
			{
				// check visitor nodes
				foreach ( PCZSceneNode pczsn in mVisitorNodeList )
				{
					if ( pczsn != exclude )
					{
						// make sure node is not already in the list (might have been added in another
						// zone it was visiting)
						if ( !list.Contains( pczsn ) )
						{
							bool nsect = t.Intersects( pczsn.WorldAABB );
							if ( nsect )
							{
								list.Add( pczsn );
							}
						}
					}
				}
			}

			// if asked to, recurse through portals
			if ( recurseThruPortals )
			{
				foreach ( Portal portal in mPortals )
				{
					// check portal versus bounding box
					if ( portal.intersects( t ) )
					{
						// make sure portal hasn't already been recursed through
						if ( !visitedPortals.Contains( portal ) )
						{
							// save portal to the visitedPortals list
							visitedPortals.Add( portal );
							// recurse into the connected zone
							portal.getTargetZone().FindNodes( t,
																ref list,
																visitedPortals,
																includeVisitors,
																recurseThruPortals,
																exclude );
						}
					}
				}
			}
		}
        /// <summary>
        ///		Returns whether or not this box intersects another.
        /// </summary>
        /// <param name="box2"></param>
        /// <returns>True if the 2 boxes intersect, false otherwise.</returns>
        public bool Intersects( AxisAlignedBox box2 )
        {
            // Early-fail for nulls
            if( this.IsNull || box2.IsNull )
            {
                return false;
            }

            if( this.IsInfinite || box2.IsInfinite )
            {
                return true;
            }

            // Use up to 6 separating planes
            if( this.maxVector.x < box2.minVector.x )
            {
                return false;
            }
            if( this.maxVector.y < box2.minVector.y )
            {
                return false;
            }
            if( this.maxVector.z < box2.minVector.z )
            {
                return false;
            }

            if( this.minVector.x > box2.maxVector.x )
            {
                return false;
            }
            if( this.minVector.y > box2.maxVector.y )
            {
                return false;
            }
            if( this.minVector.z > box2.maxVector.z )
            {
                return false;
            }

            // otherwise, must be intersecting
            return true;
        }
Beispiel #34
0
		/// <summary>
		///		Creates a <see cref="AxisAlignedBoxRegionSceneQuery"/> for this scene manager.
		/// </summary>
		/// <remarks>
		///		This method creates a new instance of a query object for this scene manager,
		///		for querying for objects within a AxisAlignedBox region.
		/// </remarks>
		/// <param name="box">AxisAlignedBox to use for the region query.</param>
		/// <returns>A specialized implementation of AxisAlignedBoxRegionSceneQuery for this scene manager.</returns>
		public AxisAlignedBoxRegionSceneQuery CreateAABBRegionQuery( AxisAlignedBox box )
		{
			return this.CreateAABBRegionQuery( box, 0xffffffff );
		}
        /// <summary>
        ///		Allows for merging two boxes together (combining).
        /// </summary>
        /// <param name="box">Source box.</param>
        public void Merge( AxisAlignedBox box )
        {
            if( box.IsNull )
            {
                // nothing to merge with in this case, just return
                return;
            }
            else if( box.IsInfinite )
            {
                this.IsInfinite = true;
            }
            else if( this.IsNull )
            {
                SetExtents( box.Minimum, box.Maximum );
            }
            else if( !this.IsInfinite )
            {
                minVector.Floor( box.Minimum );
                maxVector.Ceil( box.Maximum );

                UpdateCorners();
            }
        }
Beispiel #36
0
		/// <summary>
		///		Sets the corners of the rectangle, in relative coordinates.
		/// </summary>
		/// <param name="left">Left position in screen relative coordinates, -1 = left edge, 1.0 = right edge.</param>
		/// <param name="top">Top position in screen relative coordinates, 1 = top edge, -1 = bottom edge.</param>
		/// <param name="right">Position in screen relative coordinates.</param>
		/// <param name="bottom">Position in screen relative coordinates.</param>
		/// <param name="updateAABB"></param>
		public void SetCorners( float left, float top, float right, float bottom, bool updateAABB )
		{
			var data = new float[]
			           {
			           	left, top, -1, left, bottom, -1, right, top, -1, // Fix for Issue #1187096
			           	right, bottom, -1
			           };

			var buffer = vertexData.vertexBufferBinding.GetBuffer( POSITION );

			buffer.WriteData( 0, buffer.Size, data, true );

			if ( updateAABB )
			{
				box = new AxisAlignedBox();
				box.SetExtents( new Vector3( left, top, 0 ), new Vector3( right, bottom, 0 ) );
			}
		}
Beispiel #37
0
        /// <summary>
        ///		Calculate the area of intersection of this box and another
        /// </summary>
        public AxisAlignedBox Intersection(AxisAlignedBox b2)
        {
            if (!Intersects(b2))
            {
                return(new AxisAlignedBox());
            }

            var intMin = Vector3.Zero;
            var intMax = Vector3.Zero;

            var b2max = b2.maxVector;
            var b2min = b2.minVector;

            if (b2max.x > this.maxVector.x && this.maxVector.x > b2min.x)
            {
                intMax.x = this.maxVector.x;
            }
            else
            {
                intMax.x = b2max.x;
            }
            if (b2max.y > this.maxVector.y && this.maxVector.y > b2min.y)
            {
                intMax.y = this.maxVector.y;
            }
            else
            {
                intMax.y = b2max.y;
            }
            if (b2max.z > this.maxVector.z && this.maxVector.z > b2min.z)
            {
                intMax.z = this.maxVector.z;
            }
            else
            {
                intMax.z = b2max.z;
            }

            if (b2min.x < this.minVector.x && this.minVector.x < b2max.x)
            {
                intMin.x = this.minVector.x;
            }
            else
            {
                intMin.x = b2min.x;
            }
            if (b2min.y < this.minVector.y && this.minVector.y < b2max.y)
            {
                intMin.y = this.minVector.y;
            }
            else
            {
                intMin.y = b2min.y;
            }
            if (b2min.z < this.minVector.z && this.minVector.z < b2max.z)
            {
                intMin.z = this.minVector.z;
            }
            else
            {
                intMin.z = b2min.z;
            }

            return(new AxisAlignedBox(intMin, intMax));
        }