Computer viruses are malicious computer programs (‘malware‘) that get installed on a computer and either do things or take things that are not in the computer user’s best interests.
Computer viruses explained was last modified: May 26th, 2015 by
Knowledge Base
Free anti-virus / virus scanner software
Avast Free Antivirus
Avast Free Antivirus has an excellent interface – it’s clean, clear and configurable – and in just a few clicks you can set it up the way you like. Be careful not to install the bundled Google Toolbar and make sure to disable ‘performance issues’ scans that will invite you to install paid software components. The testing labs give Avast mid-range scores; Avast Free Antivirus may not quite offer the best protection, but its interface is one of the best around.
AVG Free
AVG Anti-Virus Free Edition is also a good choice for average users and does a decent job of protecting your computer.
Avira Free Anti-Virus
Avira Free Anti-Virus is a well known name and performs well compared to even commercial grade virus scanning software. The software is easy to install, has a small footprint and is not overly intrusive. You will get the occasional popup inviting you to install additional (paid) components like Browser Safety, Speedup, AntiTheft and Identity Safeguard, but that is all. We like how you can temporarily pause the real-time protection component and the compact size of the product overall. This is one of the best security freebies around.
Panda Free Antivirus
Panda Free Antivirus isn’t quite as powerful as the market leaders, but it still offers very capable protection and some valuable bonus features. If you’re looking for a simple package which anyone can use then it’s a sensible choice.
Microsoft Security Essentials
Microsoft Security Essentials (MSE) is Microsoft’s anti-virus software for Windows 7 (and older). Windows 8 has its own built-in AV component -Windows Defender- which will take over the role of virus protection from Microsoft Security Essentials.
Windows Defender
Like most free antivirus software, Windows Defender offers real-time protection and will alert you when it detects malware trying to install itself on your computer. Other than that, Windows Defender offers a bare minimum of anti-malware features, without extra bells and whistles.
Free anti-virus / virus scanner software was last modified: March 30th, 2015 by
3dsmax 2015 – Backface cull
Backface culling is active by default. Think of it as a sheet of paper; the side you are not using appears culled. You can use ‘flip normals’ to flip which side you want to be the facing side.
You can turn backface culling off:
With backface culling off, the ‘sheet of paper’ magically appears to be double sided.
Backface culling is a “DISPLAY PROPERTY”. It does not create additional polygons, it does not change how a texture is applied and it does not affect rendering! In both situations the render looks like this:
Materials are applied 2-sided by default. You can change this behavior as follows:
In the material editor
In the render setup:
Rule of thumb: stick with the defaults. If you see weird polygons that you can’t select, just realize this is due to backface culling. Think of them as the ‘non-facing’ side. They help to visually inspect whether or not your normals are facing the right way. Leave your materials 2 sided; it doesn’t matter if the inside of a hollow object is textured or not generally. If you want the interior of a car visible, you have to model it first; everything has thickness – slapping a texture on both sides of a simple car mesh doesn’t give you a car interior/exterior just like that.
3dsmax 2015 – Backface cull was last modified: March 25th, 2015 by
Easy.