View source for Color Blend Modes

[[image:Color Blend Modes.jpg]]<br><br>

=Introduction=
Color Blending modes are now supported on Incendia Expanded in two different sections, one in the Baseshape Editor and the other in the Render Panel. Eight modes are now defined and in the future more will be added.<br><br>
=Color Blending Modes=
The following Eight Color combination Modes are supported:<br>
==Addition==
The color components (RGB) are added and if the resulting values are greater than 255, the value is clamped to 255.<br>
==Multiply==
The color components (RGB) are multiplied and the result is divided by 255.
==Average==
The color components (RGB) are averaged (added then divided by 2).<br>
==Difference==
The final color is the absolute value of the subtraction of the color components (RGB).<br> 
==Darken==
The color is calculated as the minimum value of the color components (RGB).
==Lighten==
The color is calculated as the maximum value of the color components (RGB).
==Screen==
The color is calculated as the inverted, multiplied, and inverted color components (RGB).
==Negation==
The color is calculated according the following formula:<br>
result=1 - |1 - a - b|<br>
on where:<br> 
a=First color component (RGB)<br>
b=Second color component (RGB)<br>
=Color Blending in the Baseshape Editor=
The Color Blending option in the baseshape editor is enabled when both Surface Texture and Gradient Iteration options are selected:<br>
[[image:Baseshape Color Options.jpg]]<br><br>
The color blend is calculated between the surface texture and the gradient.<br>
The following table shows the result of the different modes:<br>
<gallery caption="Baseshape Color Blend Modes" widths="200px" heights="200px" perrow="4">
File:BaseShape Color Addition.jpg|Addition
File:BaseShape Color Multiply.jpg|Multiply
File:BaseShape Color Average.jpg|Average
File:BaseShape Color Difference.jpg|Difference
File:BaseShape Color Darken.jpg|Darken
File:BaseShape Color Lighten.jpg|Lighten
File:BaseShape Color Screen.jpg|Screen
File:BaseShape Color Negation.jpg|Negation
</gallery>
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Is important to note:
When the Surface Texture is enabled, the default image is a black texture, so when the multiply mode is selected, the result is black, thats due to the mutiplication by zero.<br><Br>

=Color Blending in the Render Panel=
The Color Blending control in the Render panel is located under the Advanced Tab:<br>
[[image:Render Panel Color Blend Control.jpg]]<br><br>
The Color Blending in the Render panel is the result of the combination of the baseshape colors and the light texture colors (ambient and diffuse components).<br>
Since not all baseshapes has colors, in those cases, Incendia assign them a black color.<br>
The following table shows the result of the different modes:<br>
<gallery caption="Advanced Color Blend Modes" widths="200px" heights="200px" perrow="4">
File:Advanced Color Blend Addition.jpg|Addition
File:Advanced Color Blend Multiply.jpg|Multiply
File:Advanced Color Blend Average.jpg|Average
File:Advanced Color Blend Difference.jpg|Difference
File:Advanced Color Blend Darken.jpg|Darken
File:Advanced Color Blend Lighten.jpg|Lighten
File:Advanced Color Blend Screen.jpg|Screen
File:Advanced Color Blend Negation.jpg|Negation
</gallery>
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