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Author Subject: [ tut ] 1. Isometric gfx: Isometrics Mathematically
anders
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2013 Posts
Location . Taipei
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posted on 9.25.2003 at 03:23
[ tut ] 1. Isometric gfx: Isometrics Mathematically

Credits : Version 2.0 (Last updated on 2/7/2003)

Written by and Copyright: Zoggles

Notes
This aims to demonstrate what an isometric view is, how it is displayed and how to create graphics in this view.

Isometric Graphics [part 1] : Isometrics Mathematically

The isometric view is based upon a rotated grid view view at an elevation. This gives a diamond shaped grid as shown below. It provides a three dimensional, perspectiveless representation of an object or objects and is particularly favoured for engineering models.




Traditionally, the isometric view is based upon a 30X angle, however, on a computer screen this angle will give an irregular and messy looking diagonal line as can be seen in the diagram below. For this reason, an angle roughly equivalent to 26.565X is used as it creates a neat and clean line.



Of course this magic figure of 26.565X is fairly useless when pixelling really. All you need concentrate on is the one up, two across principle of drawing lines. If however, you are trying to use a texture or something as an overlay without actually pixelling it isometrically, then this figure is important when you skew your picture to get it at the same angle.

2. Isometric gfx: Two Types of Construction

[Edited on 9.25.2003 by anders]




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