The new version of sketchboard is released.
Featuring:
- Freehand sketch
- Freehand sketch recognition (Experimental)
- Line property
- Object Property , color, transparency, height
- Shadow, realtime shadow volumn
- Be-zier curve (No moving or changing property)
- Wall creation (The thickness line)

You can trying it here
https://sourceforge.net/project/showfiles.php?group_id=93639