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3 Visitor Messages

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    To get a cylindrical noise field in Wilbur, use Filter>>Calculate Height Field. Select Type=Math Function and enter "ridged(1*cos(2*pi*ix/ixsize),1*sin(2*pi*ix/ixsize),4*iy/iysize)" as the expression. The 1* terms are the radius of the cylinder in noise space (larger values will get smaller noise) and the 4* term is the height of the cylinder in noise space. "ridged(x,y,z)" is the ridged fractal noise function ( "fbm(x,y,z)" is the fractional brownian motion function ). The "ix/ixsize" term computes a function from 0 to 1 horizontally in the image; the "iy/iysize" term computes a function from 0 to 1 vertically in the image. 2*pi*t converts a number from 0 to 1 into one ranging from o to two*pi (in other words, an angle). The cos(t),sin(t) item computes x and y from an angle t.
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    Thanks for the REP on July's Challenge !!
  3. View Conversation
    Thanks for the Rep, glad you liked it.
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About Thurlor

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Date of Birth
December 17, 1977 (36)
About Thurlor
Location:
Phillip Island, Victoria, Australia
Interests:
Reading, Writing, Mapping, 3D Art/Design, Sci-Fi, Fantasy, Gaming, Animals, History and more.
Occupation:
Unemployed/Stay@Home Dad

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