locvio Posted December 15, 2010 Share Posted December 15, 2010 (edited) mountain SOP will displace terrain in both up and down directions: Would like to only displace ONLY UP.. So needs something like absolute value of Y displacment... Im just transforming the result up in Y a bit to get kinda close, but getting some problems at edges that are not ideal. thanks! Edited December 15, 2010 by locvio Quote Link to comment Share on other sites More sharing options...
SpencerL Posted December 15, 2010 Share Posted December 15, 2010 mountain SOP will displace terrain in both up and down directions: Would like to only displace ONLY UP.. So needs something like absolute value of Y displacment... Im just transforming the result up in Y a bit to get kinda close, but getting some problems at edges that are not ideal. thanks! The mountain applies noise in the direction of a point normal, if it exists, or defaults to the primitive normal. Noise itself, depending on the type of noise, generally falls in the range of -1 and 1 which means that you will have it moving in positive and negative directions. You could switch to Alligator Noise which has a range of 0-1 to have it only in the positive. If you want a perlin noise but only applied in the positive Y, you could use a point sop and in the Position Y parameter, put $TY + abs(noise($TX, $TY, $TZ)) Quote Link to comment Share on other sites More sharing options...
locvio Posted December 15, 2010 Author Share Posted December 15, 2010 thanks Spencer, will try out your suggestions. Quote Link to comment Share on other sites More sharing options...
locvio Posted December 16, 2010 Author Share Posted December 16, 2010 thanks Spencer, will try out your suggestions. These worked well, thanks again. Quote Link to comment Share on other sites More sharing options...
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