Color Maps
One of the central features of Enhance:AM is the color and alpha maps. The color map section allows the color map to be set up and controlled. A color map consists of six colors and six blend points. When the texture is rendered the texture function returns a value between 0 and 1 for any particular point. The variation of this value controls the look of the texture. The value is then mapped to a color based on color map. The easy way to understand how this works is to think of a simple color map going from Yellow at 0% to Red at 100%. If the texture function returned 0.0 then this would map directly to Yellow. Similarly if the texture function returned 1.0 this would map to Red. However, if the texture function returned 0.5 then this would map to a mix of 50% Yellow and 50% Red, i.e. Orange. Two simple color maps are shown below along with how the look mapped to fBm on a simple cube.

Simple Gradient 1
Here a simple gradient has been set up to go from Yellow at 0% of the texture function to Red at 100%.

Simple Gradient 2
Here a simple gradient has been set up to go from Yellow at 0% of the texture function to green at 50% and on to Red at 100%.

Enable Colors
Each color can be enabled or disabled. When the enable switch is ON then that color is used in the color map. If the color enable switch is OFF then that color it is effectively transparent allowing the underlying colors to shown through. This allows holes to be made in the actual color map without the need to use an alpha map. An example of how this works is shown below. Here, Color 2, Green, is disabled and the underlying color Light Grey shows through.

Simple Gradient 3
Here a simple gradient has been set up to go from Yellow at 0% of the texture function to green at 50% and on to Red at 100%. However, the green color, Color2 has been disabled so that the underlying color, grey in this case, shows through.

Do Blend
The Do Blend switch controls whether the color and alpha maps are blended or use discrete steps. With the switch ON the blends are smooth transitions for one value to the next. When the Do Blends is switched OFF the transitions are discrete. It is important to note the when blending is switched off the first blend point, Blend 1, sets the point at which Color 1 transitions to Color 2. So if Blend 1 is 0% then none of Color 1 is shown as the color map transitions straight to Color 2. Some examples of the discrete blends can be seen below:

Non-Blended Color Map 1
Here a simple gradient has been set up to go from Yellow to Red. As the Do Blend check box has been disabled the color map is done using discrete steps.

Non-Blended Color Map 2
Here a simple gradient has been set up to go from Yellow to Green to Red. As the Do Blend check box has been disabled the color map is done using discrete steps.


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