February, 2007: CAD Import VCL 6.1

New features:

- AutoCAD™ DWG 2007 file format is supported. 
- AutoCAD™ PROXY (including AEC) entities are supported. 
- HPGL/HPGL2 file format - Bezier splines are supported.  
- DXF loading has been optimized for files with big amount of blocks (layers and styles). In some cases speed is increased up to ten times.
- Rotating drawings with raster images has no limitations since now. 
- When filling TsgCADGradientPolygon class objects GDI+ is used, if installed in the system.
- Enhanced Unicode symbols for TTF fonts are supported.  
- All ANSI-codepages are supported. 
- Bugs fixed: 
  - incorrect viewing of some Backward texts; 
  - incorrect viewing of raster images in block. 

April, 2006

CAD Import VCL v5.25

New features:

- Viewing of HPGL files became significantly faster. Requirements for memory lowered in 2 .. 10 times. 
- Support for BigFonts.
- SHX support: if the given SHX fonts are not found the default SHX fonts will be used.
- Support for DWG v. 9, 10 and 10.
- Forward references in DWG12.
- Bugs fixed for PolyFace in DWG12 and for gradient filling in HPGL.
- Bugs fixed for DWG/DXF, HPGL, SVG and CGM file formats.
- Classes TsgCADPolyPolygon, TsgCADGradientPolygon, TsgCADCurvePolygon and TsgCADHatch were created to replace TsgDXFHatch class.

New classes are added: 

- Tsg2DArc
- Tsg2DBoundaryList
- Tsg2DCurve
- Tsg2DEllipse
- Tsg2DLine
- Tsg2DPolyline
- Tsg2DSpline
- TsgCADCurvePolygon
- TsgCADGradientPolygon
- TsgCADHatch
- TsgCADPolyPolygon
- TsgDXFObjectEntity
- TsgDXFOle2Frame
- TsgFlatEntity
- TsgFlatHatch



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Aug 2005

CAD Import VCL v5.

Major news in the update:
- DWG and DXF SHX fonts supported
- DWG and DXF ACIS entities
- DXF Autocad Table
- DWG and DXF reference images
- HPGL RTL images
- DWG and DXF Hatch gradients
- Scalable Vector Graphics (SVG)  
- Computer Graphics Metafile (CGM)
- bugs fixing
- Unicode fonts supported (important especially for languages based on hieroglyphs - Chinese, Korean, Japanese etc.) 

Demos:

Add new entities:
Simple demo shows adding entities to TsgDXFImage / TsgDXFConv. For more functionality in this way see Editor demo.

Editor (former 'Select)
- Selection element directly by mouse and with rectangle
- Select All
- View selected elements in an additional window (now lines and circles only)
- Drag-n-drop selected element
- Copy block to clipboard and paste to another drawing 

DB Blob+LoadFromStream:
Working with Data Bases and stream.

MergeBMP&DXF:
Merging BMP and DXF file.

OpenGL:
OpenGL demo draws 3DFace entities using OpenGL functions.
Features:
- Zooming
- Padding by left mouse button (when 3D Rotating is off)
- 3D Rotating                                           
- Option 'Whireframe' allows showing of the items as a flooded or framed surface
- Option 'Black background' allows drawing of the background in black or grey color
- Option 'Lighting' switches on/off shading of the surface                         
- Options 'Material1' and 'Material2' allows showing of the surfaces as different kinds of material

SimpleImport
- SimpleImport is a main demo for IMPORT purposes. It shows reaching the properties of entities. Opens a CAD file and save TXT file.  "Complicated" import is TsgDXFImage.pas which is delivered in Lib directories.

TextChange+Color2LineWeight+MergeFiles:
- Scripts to change special text to give values
- Assigns line weight using color
- Merges files
- Changes LineType scale
- Shows/Hides lineweight

Viewer:
Main demo shows using CAD Import VCL for viewing purposes. It has examples of working with:
- Opening DXF/DWG/BMP, etc. files
- Save to BMP/JPG/EMF/WMF (similar ways can be used to saving to another fomats)
- Print
- Print 1:1 scale
- Print view area
- Zoom in (also use MouseWheel)
- Zoom out
- Layers
- Background color
- SHX fonts
- 3D orbit
- Grid
- Open BMP frame and insert CAD 
- Layouts
- Structure 
- Reloading file with the same view
- Show specified point on the drawing
- Find text and draw embracing rectangle or ellipse
- Etc.
