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colorspiral.doc
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1995-02-13
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ColorSpiral.itx : 2D texture.
Type: Color, Reflect, Filter.
Overview:
=========
This Imagine 3.x texture draws a flow of colors around the texture axis
much like a radar screen sweeps around. You can have 2, 3, 4, or 5 colors
in the sweep and have the spiral as well.
At least a 68020 and an FPU are required. The integer version of Imagine is
not supported, sorry.
Usage:
======
Apply this texture to a default plane for an example of what it does.
The texture is centered at the textures axis, and draws it in the X
any Y directions. The Z axis has no effect on this texture.
Parameters:
===========
Spiral Every X Units
--------------------
This tells the texture how much to spiral the colors. A negative number
will not spiral the texture. A positive number will give a spiral effect.
The default is 100, which means the colors spiral 360 degrees every 100
Imagine units. Smaller numbers give more spirals.
Color 1 Red, Color 1 Green, Color 1 Blue
Color 2 Red, Color 2 Green, Color 2 Blue
Color 3 Red, Color 3 Green, Color 3 Blue
Color 4 Red, Color 4 Green, Color 4 Blue
Color 5 Red, Color 5 Green, Color 5 Blue
----------------------------------------
These are the colors that flow over an object. You can use from 2 to 5
colors. To use less than 5 colors, put a -1 in the Red value of the
colors you don't want. You MUST disable the last colors first or you
will get unpredictable results. So for a 4 color spiral, use a -1 in
the Color 5 Red paramater.
Notes:
======
Using 5 shades of blue and white with a lot of spiral can give a great
whirlpool effect, especially when animated. You can animate it by
rotating the texture axis along the Z axis, or by changing the Spiral
amount and morphing the object.
When used on the ground you have to rotate the texture axis for the propper
effect, the default axis is set up to be used on a plane.
***************************************************
Ian M. Smith
Fido-Usenet: Ian.Smith@f564.n2601.z1.fidonet.org
***************************************************