12.0.456

• Fixed Surface entity with accurate transparency
• Fixed selection of FemMesh entity inside a Block
• Fixed exception inside Environment.GetWinFormsCursors() method
• Fixed bug in VectorView with rectangle clipping
• Added Drawings.PaperColor property
• Fixed UtilityEx.GetStats() method for entities inherited from BlockReference
• Added UtilityEx.GetCircleTangentToTwoCircles() method
• Fixed zero radius issue for conical faces in STEP file import
• Fixed the Mesh.CutBy(Plane) method for input plane perpendicular to plane XY
• Changed Picture entity printing order, now they are printed underneath anything else
• Converted WriteFileAsync.SupportedLinearUnitsType to static property
• Restored original speed of Solid.Clone() method
• Fixed HiddenLinesView.CreateMetafile() method with FillText in WPF control
• Added support of non-tangent rail corners for Brep.Sweep(). Added merge parameter to all sweep methods.
• Replaced extension of Arc during Brep.Sweep() with linear extension. Added conversion to NURBS when the merge parameter is true.
• Fixed Turbo drawing with semi-transparent entities and a current BlockReference
• Fixed elliptical arc export in WriteAutodesk class
• Fixed OpenGL crash setting current a BlockReference with semi-transparent entities
• Removed Brep seam curves from periodic faces, it affects VectorViews
• Fixed missing paint bug when the WinForms control is hosted inside a UserControl at design-time
• Added support for hyperbola and parabola curves in STEP import
• Fixed null reference exception in PerformanceStudio WPF code sample
• Fixed wrong Hessian matrix into Curve.MinimumDistance() method
• Added text styles support to Table entity in ReadAutodesk class
• Improved MachineSimulator source code sample
• Fixed instance visibility at Entity level in Turbo mode
• Fixed null reference exception with Direct3D renderer in WinForms control
• Added OnLostKeyboardFocus event handler to reset keyboard states with Native renderer in WPF control
• Fixed Turbo crash in Mesh and Region entities with zero triangles
• Fixed ConicalSurf.CreateSurface() for planar cones
• Added exception for Professional edition when trying to intersect a Line with an Ellipse
• Fixed DraftingDemo source code sample for wrong type cast
• Fixed STEP export for rational NURBS curves
• Fixed broken dynamic selection in WPF control
• Fixed copy and paste with Direct3D renderer
• Fixed Visual Studio 2012 compilation compatibility for CustomControls project
• Fixed issue in Form New feature of AssemblyTreeView
• Added Environment.SetPrinterSettings() method
• Fixed crash for FastPointCloud entity in FindClosestVertex() method
• Added the DrawingPanel and refactored PaperSpace source code sample
• Added the Exception to the WorkFailedEventArgs