tamagochy
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My issue with RBD and Grain simulation setup...
tamagochy replied to Masoud's topic in General Houdini Questions
In merge choose mutual -
You so lazy to search at forum? Solution here I found it.
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here you can download scene and find how clusters combine
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You are not combine them you just merge it. You need to use volume mix o vdbcombine to create one volume. For sim hirez just decrease divsize in dop...
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check here
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Combine all clusters and uprez one container. But faster is sim hirez clusters...
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Adding some curl noise to vel field before dop is right way. Usually I check range of the speed and use disturbance to specific values like 2-4 in range with disturbance 4-6 its usually add more brakes to high speed parts
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When the ship moves over the sea, the tail will lack the corresponding particles as it moves.
tamagochy replied to lim_flamingo's topic in Effects
yes you should increase depth of narrow band layer -
use random to delete rbd pieces by id of the input point and frame like this: int id = point(1,"id",0); int idp = int(rint(fit01(rand(id+@Frame),0,numRBDpieces))); if(@ptnum!=idp) removepoint(0,@ptnum);
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Attach Flower head to simmed geometry.
tamagochy replied to Jesper Rahlff's topic in General Houdini Questions
translate function just move matrix to the position qmultiply its the same as multiply matrix but for quaternions, its optional, you can skip this, I need to save initial orientation and use this one.- 8 replies
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Attach Flower head to simmed geometry.
tamagochy replied to Jesper Rahlff's topic in General Houdini Questions
Just take point from stem, if you use wire you have there orient attribute, if not calculate matrix, and apply matrix to flower head. If you dont need orient you can use just matrix vector4 orientr=quaternion(3@rot); //matrix for flawer head vector restP = point(1, "restP", point.number.from.stem); matrix m = set(qconvert(orientr)); translate(m, restP); p@restorient = orientr; vector4 orient = point(1, "orient", point.number.from.stem); orient = qmultiply(orient,orientr); vector pos = point(1, "P", point.number.from.stem); matrix t = set(qconvert(orient)); translate(t, pos); matrix r = invert(m)*t; @P *= r; @orient = orient; -
User error? Strange curl noise behaviour for certain base noises
tamagochy replied to swalsch's topic in Effects
Working only perlin, simplex and all below it -
You can use intersect with some distance and find position at primitive where collision happen.
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There is no information about citizenship must have for this kind of job. It's possible to get position without US or Canada citizenship or permit?
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in volume source use vel as destination field and you no need advection.
