Archive for 'Data Structures'

Formating a GPT Protective Partition (Mac OSx Journeled)

Tuesday, September 13th, 2011 at 6:04 pm  
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In Windows OS, if you cannot access or modify GPT disk, you can convert a GPT disk to MBR by DiskPart. But doing so will remove all data and partition structures in the disk.

First Confirm that the Drive is detected and visible in Device Manger and Disk Management.

1. Open Command Prompt as an Administrator (click Start–> Run, type in “cmd” in textbox, and hit “OK”)

2. Enter “DiskPart” and hit enter.
Now the Dos prompt will change to “DISKPART>”

3. Enter “list disk” and hit enter.
This will list all disks attached to the machine. Cross check with the size and name of the disk.

4. Select the desired disk using the “select” command. This will fix the focus to the specified disk.
For example “select disk 0″.

5. Now erase the entire drive using the “clean” command.
Warning: This command will erase all data on the selected disk, backup your data first.

6. Enter Exit and close command-prompt.

7. Open Disk management. (click Start–> Control Panel–> Administrative Tools –>Computer Management–>Disk Management)

8. Right-Click on the drive and click Initialise Drive.

9. Now you can format the drive as you desrve. Right-Click and select format.

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Procedural generated graphics-An introduction

Wednesday, March 30th, 2011 at 10:21 am  
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Most common 3D scene which we see in games and animations consist of a lot of textures and models.These elements are created in advance and saved as files, which are later loaded by the computer and assembled to create a scene on the monitor. Most of the conventional graphics work in this manner.The major draw back of this method of graphic generation is that you need a large memory to save these graphics elements.
Procedural graphics, in contrast, do not use previously created and saved textures but generates them dynamically as you run those animations. The result is that the file size is reduced drastically since you don’t have to store textures and other information.This comes handy when memory constrains are strict.Procedural graphics involves some well known computer graphics techniques for generating data.The basic idea is to create,”on-the-fly” graphics.Data structures are created and then filled with data generated from the code itself, rather than being loaded from files as in conventional methods.

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