What's all this Fakely Axis stuff ?

Step One
Some of you might not be aware of the usefulness of the Fakely Axis texture which can be found in IFW2_SpecialFX. This texture allows you to set up a fade based on the angle between the object and a point in 3d. This means you can set up effects like snow build up, dust collection or, in the case of this tutorial, a dusting of icing. To start off, make the object a chocolate color with a nice specular highlight. Then add IFW2_Noise and select Stucco. Scale the texture until to get a nice looking chocolate donut.

Step Two
Next add IFW2_SpecialFX and select Fakely Axis. Keep the default parameters which create a blend between 0 and 90 degrees based on a point directly above the object (0,100,0). So we can see the texture to adjust it make Color1 and Color2 grey with Color3 and Color4 white. Then make the blends, Blend1=0%, Blend2=40%, Blend3=60% and Blend4=100%. The donut should now be grey with a white icing dusting. To make the icing more realistic add some noise by adjusting the Noise Scale and Noise magnitude. Once you are happy of the icing turn off all of the four used colors by unchecking the color enable check boxes. In order for the fakely axis texture to pass on its texture function we just need to create an alpha map. To do this set the Alpha1 and Alpha2 to 0% and Alpha3 and Alpha4 to 100%. If you view the alpha map you will see that the where the color was brown the alpha is 0% and where the color was white the alpha is 100%. When this is followed by a texture with its Material Map check box enabled the following texture will be applied full on where the alpha map is white (100%) and completely off where the alpha map is black (0%). This is used to control the application of the icing texture as detailed in step 3.

Step Three
Finally, we want to add a more effective icing texture so add IFW2_Organic and select Dirt. Set Color1 and Color2 to white. As we want the icing to be faded in places set Alpha1 to 50% and check the Affect Layer Check Box. Also, tone down the bump value to around 0.005. Another thing to bear in mind is that the icing does not have a specular reflection like the chocolate so check the Affect Specularity check box and set the specularity to 0%. As we want the icing to be applied based on the function derived by the Fakely Axis check the Material Map check box.

Step Four
As you can see from the donut on the left. Having the dirt texture affect the specularity and then switching off the affect the specular highlight is only visible on the chocolate coating and not on the icing.

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