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Essence .itx Documentation (Fractalf.itx)

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The filter variant of Fractalc.itx.

REQUESTER TABS

  • Initial Scale:
    The size (in Imagine Units) of the coarsest features you want to represent. If you're not certain, try a length corresponding to about 20 % of your object size.
  • # of Scales:
    The number of noise scales added together to form the fractal noise. The higher this number is, the more detail you'll see in the smallest features. A value of 4 to 6 is usually fine, but if you are going to be zooming into the noise, (say for a closeup of a planet) you might crank this all the way up to 10.
  • Scale Ratio:
    The rate which the size scales decrease. 0.4 or 0.6 is almost always a consistently good value, since you will get a smooth continuation over many sizes. (A value of 0.5 exactly is not quite as good, since variations on different scales might tend to match up at exactly 2 cycles to 1. The smaller this number is, the wider the range of size variations you'll see.
  • Amplitude Ratio:
    How fast the amplitude of the scales drops off. This is often the same number as the Scale Ratio. A higher number will make fast variations more dominant. A smaller value than the Scale Ratio will emphasize the slower variations.
  • Time Ratio:
    The rate at which different scales change their character when animated. Again, the usual number is the same as the Scale Ratio, making the natural 1/f noise variation. The smaller the number, the faster the small details will change compared to the coarser features.
  • Time:
    The time at which the texture is evaluated. Morph this number over a series of frames to make animated noise. A rate of about 1 unit of time over 20 frames is a good speed to start off with: that is, you might change the Time from 0 to 1 during frames 100 to 120.
  • Base -> 1 Trans:
    The percentage level where the base colour starts to turn into filter colour 1.
  • 1 -> 2 Trans:
    The percentage level where filter colour 1 is fully displayed and the base colour is not seen any more. Filter Colour 2 now starts to blend in here.
  • Filter 1 End:
    The end of the filter colour 1 to filter colour 2 transition. Filter colour 2 is now completely dominant. For the rest of the percentage range, filter colour 2 will be displayed.
  • Filter 1 RGB:
    The first applied filter colour.
  • Filter 2 RGB:
    The second applied filter colour.
  • Fade Value:
    This parameter allows you to control the strength at which the texture is applied to the object's surface; a value of 0.0 applies the texture at maximum strength, whereas a value of 1.0 makes the effects of texture invisible.