• Fixed missing triangles in Mesh objects generated by revolution
• Fixed blinking wait cursor during regeneration of many entities
• Fixed exception at desing-time on some hadwares

Version 2.0.2.0 [September 2, 2008]

• Added Viewport.IsAccelerated property
• Added Viewport.UseHardwareAcceleration property
• Added special handling for Intel on-board graphics cards
• Added support for rectangular background bitmaps
• Fixed GetEntityUnderMouseCursor() close to viewport border bug
• Fixed incorrect entity sorting bug
• Improved LinearPath entity drawing speed
• Added support for Autodesk PolygonMesh entities
• Fixed import of some Autodesk PolyfaceMesh entities
• Added Viewport.UpdateCenterOfRotation() method
• Added Viewport.AdjustNearAndFarPlanes() method
• Fixed single click with viewportActionMode.selectVisibleByBox bug
• Added the Viewport.Materials property
• Added the Viewport.WaitCursorMode property
• Added the Viewport.OrientationMode property
• Added the EntityList.CopySelection() and PasteSelection() method for clipboard handling and associated Ctrl+C / Ctrl+V keyboard shortcuts
• Improved Viewport.OpenglVersion method, now returns a Version type
• Fixed wrong selection cursor
• Fixed transformation for Joint entity
• Improved ZPR rotation around a point accuracy
• Fixed panning during zoom in perspective projection
• Added a new property called RegenMode to the Entity class
• Moved Viewport.TextEntityFont property to Viewport.Entities.Font
• Viewport.ShowExtents property was moved inside Viewport.BoundingBox
• Moved Viewport.AdjustNearAndFar() was moved inside the Viewport.Entities class
• Fixed ViewportStandard.ScreenToWorld() returning (0,0,0)
• Fixed not working Viewport.Edge.Antialiasing property
• All export method now supports the visibleOnly parameter
• Fixed ViewportProfessional.ReadBinarySTL() speed
• Fixed BlockReference entity transformation
• Fixed AlignedDim entity editing
• Added support for DWGdirectX 2.6
• Added support for AutoCAD PolyfaceMesh object
• UCS Icon is back, now called CoordinateSystemIcon.
• Fixed flimmering on models far from the origin
• Fixed Fem Legend class serialization
• Fixed weird shadow
• Fixed misplaced Grid origin bug
• Fixed Material.Shininess bug during OBJ import
• Fixed Shadow/Origin symbol overlapping bug
• Fixed Mesh.SmoothingAngle property now in radians too
• Fixed selection color of MulticolorPointCloud entity
• Fixed point size of PointClouds entities
• Added the Enabled property to the Rotate settings to avoid accidental rotations in 2D views
• Fixed crash during Pan settings modification in the designer
• Fixed incorrect near plane clipping
• Fixed crash loading MulticolorPointCloud entity
• Reordered all the Rotate Rotation Revolve methods parameters in a consistent manner
• Renamed Mesh2D.Thickness to PlateThickness
• Moved Viewport.TextEntityFont property to Viewport.Entities.Font
• Viewport.ShowExtents property was moved inside Viewport.BoundingBox
• Added support for AutoCAD PolyfaceMesh object
• ViewportStandard.SelectAll() and Invert() methods now skip non-selectable entities
• Viewport.FindClosestVertex() now works only on visible entities
• The Utility.Points3DtoPoints2D() method was replaced by ProjectToPlane()
• Fixed STL export of Mesh objects
• Added point size control on Point and PointCloud entities
• Renamed Entity.LineWeight property to Thickness, now Thickness controls points size too.
• Fixed FindClosestVertex() method on STL models.
• Added the ShowControl property to Nurbs curves and surfaces to show individual control polygon/net
• Bitmap background is availability in Standard Edition
• Fixed Standard.LinearPath DWG/DXF export
• Fixed serialization of the StlModel class
• Added the Feet, Miles and Kilometers units to ViewportProfessional.UnitsMode
• Improved shadow drawing speed
• Renamed Viewport.ShadingMode to DisplayMode
• Added the Viewport.ClippingPlane1 to 4 properties to add up to 4 distinct clipping planes to the scene
• Vector3D.CalcNormal method was replaced by a specific Vector3D constructor
• Fixed wrong header for long file names during IGES export
• Fixed Plane entity export to IGES
• Fixed quadric object deallocation
• The pick box size is now unlimited
• Added two more overrides to both the Entity class and the Transformation class to allow the rotation around an axis not passing through origin
• Breaking Change MaterialAmbient, MaterialSpecular and MaterialShininess were replaced by the Viewport.DefaultMaterial property
• Breaking Change KeyLight and FillLight were replaced by the Lights property
• Entity.Scale() now accepts the base point parameter
• Added an overloaded version of Viewport.RescaleModel() that accepts two points to get proper model scaling in absence of entities
• Improved speed of the Entity.Extrude(), Entity.Revolve(), Mesh.Extrude(), Mesh.Revolve(), Mesh.MakeBox(), Mesh.MakeCylinder(), Mesh.MakeCone(), Mesh.MakeSphere() and Mesh.MakeArrow methods.
• brGlobalMin and brGlobalMax Viewport members were replaced by the boundingRect one
• Added two more overloads to the Texture class constructor to allow the texture minifying function specification
• Fixed selection color of TriangleWithTexture and QuadWithTexture class
• Improved speed of the ViewportProfessional.ReadBinarySTLSmooth() method
• Added the ZPR rotation around a point different from the model bounding box center
• Added VisibleEdgeFlag property to Triangle and Quad classes.
• Fixed invalid assembly signing (strong name)
• Removed the Viewport.CameraToModelDistance property. Now adjusting the field of view angle the model is moved automatically at the right distance from the viewer.
• Added the Viewport.ViewData struct to be used with Viewport.SaveCurrentView() and Viewport.RestoreView()
• Fixed the restore view bug for different aspect ratio viewports
• Added ZprMouseButton property to change the mouse button used for Zoom/Pan/Rotate
• Added ReverseMouseWheelZoom property to reverse the zoom by mouse wheel direction
• Added MouseWheelZoomMode property to change the zoom center
• Fixed single click Zoom Window
• Platform target is back to AnyCPU
• Added support for ReadWriteProgress event in ViewportNurbs.ReadAutodesk()
• Fixed remapping of angular coordinates in ViewportNurbs.ReadIGES() for surfaces of revolution
• Improved regeneration for Nurbs curves of degree 1
• Improved speed of the Delaunay Triangulation algorith.

Version 1.3.1.5 [February 26, 2008]

• Windows Vista 64 is now fully supported
• Added the LineColor property to the PointCloud class
• Added support for ReadWriteProgress event in ViewportNurbs.ReadIGES()
• Added a RichMesh.MakeFace() override that support texture orientation
• Added the serialization of the Entity.Visible and Entity.Selectable properties
• Fixed international characters in Text entities bug
• Fixed rotation angle for Text entities in DXF files
• Fixed RichMesh.MakeFace() with texture coordinates parameters was not stretching texture image
• Fixed OutlinedText label was not drawing vertical
• Fixed DoubleClick event on Viewport control was not handled correctly
• Fixed black model issue during Binary STL import
• Fixed Mesh.MergeWith() between meshes with already computed normals
• Fixed zoom limits bug
• Fixed the ProjectionMode property bug at design-time
• Added support for nested blocks
• Added support for color by layer and line weight by layer during DWG/DXF import
• Added support for frozen and switched off layers during DWG/DXF import

Version 1.3.1.0 [February 4, 2008]

• Added the ToBeReversed property to the Entity class to store curve entities orientation
• Added Entity.ExtrudeAsNurbs() and RevolveAsNurbs() methods
• Added a Surface.ProjectOn() override that support standard curves
• Improved IGES import support
• Breaking Change Trim loops for Nurbs surfaces are now specified as geometric (model space) curves, not in parametric space. The Surface.TrimBy() method does all the necessary conversions.
• Breaking Change The Surface.TrimLoops member now holds outer and inners trim loops.
• Changed Nurbs.Arc startAngle end endAngle are now normalized
• Improved Surface.ProjectOn() and Curve.ProjectOn() methods now are more accurate and fast
• The Center property of Arc and Circle classes is now read-only. To change it use the read and write Origin property. See documentation for details.
• Added the abstract PlanarEntity class.
• Upgrade to OpenDWG version 2.5.1
• Fixed setting a new font with Viewport.TextEntityFont property
• Renamed the Entity.Thickness property to the more appropriate LineWeight.
• Added bidirectional support for Autodesk line weights.
• Added bidirectional support for standard Units for DWG/DXF/IGES
• Renamed unitType and UnitMode respectively to unitsType and UnitsMode
• Renamed Standard.Line.Start and End properties to StartPoint and EndPoint
• Renamed Standard.Bar.Start and End properties to StartPoint and EndPoint
• Renamed the Standard.Polyline class to the more appropriate Standard.LinearPath
• Added the ViewportStandard.MoveToPlane() method
• Standard.StlModelSmooth class was dropped, it was no longer necessary.
• Changed ViewportProfessional.ReadBinaryStlSmooth(), now accepts two new parameters to control sharp edges and the color of the imported model.
• Improved ViewportProfessional.ReadBinaryStlSmooth() speed
• Fixed IGES General Note Entity (Type 212) was not imported
• Changed ViewportProfessional.RenderToBitmap() method. Support for alpha channel was dropped for a number of reasons.
• Fixed Text entity height accuracy
• Fixed long load time on first validation of a license when machine is part of a Windows domain
• Improved reliability of the of Mesh.MakeFace() method (Point3D version), now accepts a new parameter to disambiguate profile direction.
• Added Standard.Ellipse entity
• Added Standard.EllipticalArc entity
• Added support for Ellipse, MText and Blocks import
• Added support for Block origin
• Added support for BlockReference class serialization
• Renamed Standard.Insert class to Standard.BlockReference
• Improved Print/Print Preview speed in presence of thousand of labels
• Fixed black background print preview on MS OpenGL implementation
• Fixed rotationAngle bug for Text entity
• Fixed a small issue with certain *.MTL files (ReadOBJ)
• Added a Mesh.MakeFace() override that accepts lowerLeft and upperRight texture limits
• Added the Entity.RevolveAsRichMesh() method
• Improved the printer setting probing algorithm
• Fixed non-linear model scaling during Viewport resize
• Breaking Change Viewport.ZoomFactor() behavior has been inverted

Version 1.3.0.24 [December 12, 2007]

• Fixed selection of entities with Selectable = false
• Fixed wrong selection on visible entities under certain conditions
• Fixed misplaced Text entity during DWG/DXF import
• Fixed Delaunay triangulation with null loops bug
• Fixed GetEntityUnderMouseCursor() method returning always zero
• Added the Rational property to Nurbs curves and surfaces
• Added the Texture.HardwareAcceleratedMipmaps property to give a chance to old graphics cards to work properly on textures
• Added the Viewport.DrawTextOutlined() method

Version 1.3.0.21 [December 03, 2007]

• Fixed localization issues with IGES Import/Export
• Fixed wrong parameterization limits writing Nurbs surfaces
• Fixed the 'Background color' exception during OpenFile()/SaveFile()
• Fixed the multiple overlapped Eyeshot viewports issue
• Changed the OpenglVersion property, now returns a string object
• Fixed invisible origin symbol at startup
• Fixed issues with empty text labels
• Fixed Polyline entity serialization
• Fixed version and licensing information at design time for subclassed viewports
• Added the EyeshotVersion property
• Changed Page Setup dialog: margins are now disabled, the new parameterless print engine uses the entire printable area.
• Added the PrintDocumentName property
• Changed the PrintPreview() method, now accepts only one parameter
• Added the OutlinedText label

Version 1.0.3.6 [July 30, 2007]

• Fixed selectVisibleByPick and selectVisibleByBox bug
• Improved the accuracy of frames per second calculation (fps)
• Improved OBJ import, now face definition on two lines are supported from both ReadOBJ() and ReadPlainOBJ() methods.
• Improved RichMesh class, now models are rendered faster
• Fixed the tessellation of Nurbs surfaces of revolution with overlapping control points
• Removed the Blending property in favor of the EntitySorting one
• Breaking Change Removed the Antialiasing property for performance reasons
• Added the Length(), Area(), Volume() to all entities
• Windows Vista support
• Fixed wrong shadow when UcsIcon was not visible

Version 1.0.3.1 [July 9, 2007]

• Added the Text entity
• Breaking Change Removed the InitZoomRect() method and the FieldOfView property in favor of FieldOfViewAngle and CameraToModelDistance properties
• Added FieldOfViewAngle property
• Added CameraToModelDistance property
• Added the WorldToScreen method
• Added the virtual method CenterTheModel(), to give a chance to derived classes to skip automatic model centering
• Added the virtual method LookAt(), to give a chance to derived classes to override the standard camera positioning algorithm
• Changed the SelectionChangedEventHandler, the second parameter now is a standard EventArgs object
• Breaking Change Removed the SelectionEventArgs class. See this article for details.
• Changed DeleteSelected(), doesn't call Invalidate() any more
• Changed FlipNormalSelected(), doesn't call Invalidate() any more
• Changed ClearSelection(), doesn't call Invalidate() any more
• Changed InvertSelection(), doesn't call Invalidate() any more
• Changed SelectAll(), doesn't call Invalidate() any more
• Changed UpdateDisplayList(), now it needs two more parameters: fontDisplayList and fontGlyphMetrics
• Fixed the Zoom() method for inconsistent zoom amount
• Added the ResetZoom() method
  
• Added and ResetPan() method
• Added the ZoomFactor() method to set an absolute zoom factor
• Renamed the UpdateNomals() method of the Mesh class to ComputeNormals()

Version 1.0.2.7 [June 4, 2007]

• Removed ShadowMode property, now the shadow mode is determined from the ShadowOpacity setting
• Removed ImagingShadowMode, now the Imaging shadow mode is determined from the ImagingShadowOpacity setting
• Renamed TransparencyAmount property to ShadowOpacity, values now range from 0 to 1
• Added the FindMeshTriangle() method to locate the Triangle under the mouse cursor of a Mesh entity
• Added the FindMeshVertex() method to locate the closest vertex to the mouse cursor of a Mesh entity
• Added the FindClosestVertex() method to locate the closest vertex to the mouse cursor
• Added the GetEntityUnderMouseCursor() method to get the index of the entity under the mouse cursor

Version 1.0.2.6 [May 29, 2007]

• Added support for DXF Polyline entity type 1 (closed polyline)
• Added the Point4DConverter class
• Added the UseMipMaps property to Texture class
• Added the Load() method to TextureList class to reload all the texture at once
• Fixed specular settings of UCS Icon: now are separated from environment settings
• Added support for IGES Entities type 108 Plane and type 122 Tabulated Surface
• Added support for Catia 5 IGES files (contain only geometric trim loops)
• Added the UniformKnotVector() method to the Nurbs.Base class
• Added the LooksLike property to the Nurbs.Surface class that tries to guess the surface type by the number of control points in the two directions
• Added support for transparency to TriangleWithTexture and QuadWithTexture entities
• Added the Length and Area properties to the Polyline class
• Added to all the entities the Start, End, Middle properties
• Changed the xCenter, yCenter, zCenter Arc properties to Center
• Added the hotSpotX and hotSpotY parameters to ImageLabel constructor
• Plane class now can be used like an entity

Version 1.0.2.3 [April 28, 2007]

• Changed Arc and Circle entities implementation
• Fixed DXF import/export of Arc and Circle entities not laying on XY plane
• Fixed IGES import/export of Arc and Circle entities not laying on XY plane
• Fixed IGES import of type 144, trim curves were not marked depended

Version 1.0.2.1 [April 23, 2007]

• Fixed the Zoom by MouseWheel bug
• Fixed the Clone() method for Joint and Bar entities
• Changed the behavior of all the imaging methods, now they throw an EyeshotException if the image preparation fails
• Added the ReadPlainOBJ() method to skip colors and textures
• Changed the Triangles array for all Mesh classes to type object[]

Version 1.0.2.0 [April 16, 2007]

• Labels now accept Point3D in the constructor
• ScreenToWorld() now accepts System.Drawing.Point
• Added the OriginLabelDistance property
• Renamed the ReadOBJ_fromDeepExploration to ReadOBJ
• Fixed origin symbol size during Zoom
• The assembly is now strong-named and can be installed in the GAC
• Added the Triangles property to the Nurbs.Surface class
• Added one more constructor to Arc and Circle classes without the Transformation parameter
• Changed the Transformation property for Arc class
• Added the Pan method, to allow panning by code
• Added the Rotate method, to allow rotating by code
• Changed the behavior of all the import methods, now they throw an EyeshotException when something goes wrong

Version 1.0.1.9 [March 9, 2007]

• Added the SelectHiddenEntities properties to ViewportStandard class to allow selection of hidden entities
• Fixed the selection bug with Action = actionType.None
• Fixed the MulticolorMesh, MulticolorOnVerticesMesh and RichMesh draw selected issue
• Renamed the SelectionList property of SelectionEventArgs class to SelectedEntities
• Fixed the Point3D TypeConverter
• Added the Entities property to Viewport class
• Added the Labels property to Viewport class
• Added the Textures property to Viewport class
• Set the FillLightOn default value to true
• Removed the QuadricSubdivision property of the ViewportClass

Version 1.0.1.7 [March 2, 2007]

• Improved the Delaunay Triangulation algorithm
• Added the DrawGrid() method
• Fixed the export of Joint and Bar entities
• Fixed the opaque shadow color