https://github.com/roscibely/computer-graphics

Computer Graphics: Scene processing and texturing 🟤
https://github.com/roscibely/computer-graphics

c computer-graphics graphics linear-algebra opengl texture

Last synced: 7 months ago
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Computer Graphics: Scene processing and texturing 🟤

• Host: GitHub
• URL: https://github.com/roscibely/computer-graphics
• Owner: roscibely
• License: gpl-3.0
• Created: 2017-05-04T15:11:22.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2020-09-03T23:49:23.000Z (about 5 years ago)
• Last Synced: 2025-01-21T21:47:13.830Z (9 months ago)
• Topics: c, computer-graphics, graphics, linear-algebra, opengl, texture
• Language: C
• Homepage:
• Size: 2.31 MB
• Stars: 1
• Watchers: 2
• Forks: 1
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE.md

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README

          
# Computer Graphics: Scene processing and texturing 🛸 🌌

Linear algebra has wide application in the field of engineering and computer science. Here is described the graphic process of texturing objects. You will need: 

[OpenGL](https://www.opengl.org/) and GLUT Utility Toolkit

The idea is to apply the texture and altimetry of the planet Mars 🟤 (available at [here](http://planetpixelemporium.com/mars.html) ) in a sphere. For this, knowledge of linear algebra is needed, specifically transformations and geometry.

    I. Texture

    

   ![Figure](https://github.com/roscibely/Computer-graphics/blob/master/figures/f1.jpg)

    II. Altimetry

    

   ![Figure](https://github.com/roscibely/Computer-graphics/blob/master/figures/f2.png)

   

    III. Modeling

       

   ![Figure](https://github.com/roscibely/Computer-graphics/blob/master/figures/e2.png)

   

   The sphere radius can be written as a function of the circle radius formed by a section R, and the distance between the plane of the section and the center of the sphere R-h,

   

   ![Figure](https://github.com/roscibely/Computer-graphics/blob/master/figures/eq1.gif)

   

  2D radius coordinates are given by, 

  

  ![Figure](https://github.com/roscibely/Computer-graphics/blob/master/figures/eq2.gif)

 

    IV. Final result 

    

   ![Figure](https://github.com/roscibely/Computer-graphics/blob/master/figures/proj4.png)

[Result](https://www.youtube.com/watch?v=VKxlAa5HHTw)