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Drughi last won the day on December 12 2019

Drughi had the most liked content!

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About Drughi

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    Johannes Heintz
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  1. custom vel not working

    You are right! But it is a bit confusing. With smoke it is working this way and also I remember to have done this successfully with flip.
  2. custom vel not working

    I was facing the same problem recently. I just used a sop solver instead. Object merge your v source to the sop solver and add it to vel.
  3. flip fluid- sop solver vs pop wrangle

    Sop Solver is different to the solver on sop level. No. The Dopnet itself is taking care of this. The sop solver basicly allows u to use sops inside of dops, wich is very mighty.
  4. Flipbook not starting

    Make sure the output folder exists.
  5. Hey! this is something I'm interested in as well. I think if you check the GuidedRBDBulletSolver example files the answer should be burried in this setup, but I haven't had the time to dig deeper. I think this is the relevant wrangle (/obj/guidedrbdbulletsolver_example1/animated_guide_simulation/rbdbulletsolver4/dopnet/guide_geometry): int dotQuat(vector4 q1; vector4 q2){ int dotQ = (q1.w*q2.w+q1.x*q2.x+q1.y*q2.y+q1.z*q2.z) < 0; return dotQ; } // Unguide pieces with no guided neighbours int useneighbours = point(0, "__guide_useneighbours", @ptnum); int guide_count = point(0, "__guide_neighbourcount", @ptnum); if (chi("useneighbours") && guide_count && useneighbours) { int ns[] = point(0, "__guide_neighbours", @ptnum); int newns[]; foreach(int n; ns) { int guided = inpointgroup(0, "__guided", n); if (guided) append(newns, n); } setpointattrib(0, "__guide_neighbours", @ptnum, newns); int num = len(newns); if (num < min(guide_count, chi("minneighbours"))) { i@group___guided = 0; return; } } int pt = findattribval(1, "point", "name", s@__guide_name, 0); if(pt >= 0) { vector restpos = primintrinsic(0, "pivot", @primnum) + v@__guide_pivot_offset; int pr1 = pointprims(1, pt)[0]; vector restpos1 = primintrinsic(1, "pivot", pr1); vector pos1 = point(1, "P", pt); vector offset = restpos - restpos1; matrix3 xform1 = primintrinsic(1, "transform", pr1); vector pos = pos1 + offset * xform1; float timeMult = 1.0/@TimeInc; timeMult *= 1.0/chf("timescale"); matrix3 xform = primintrinsic(0, "transform", @primnum); rotate(xform, v@__guide_rot_offset, 0); vector4 quat = quaternion(xform); vector4 quat1 = quaternion(xform1); int reverse = dotQuat(quat1, quat) ? -1 : 1; quat *= reverse; if(i@active && s@__guide_name!="") { float bias = ch("bias"); if (haspointattrib(0, "__guide_blend")) bias *= clamp(float(point(0, "__guide_blend", @ptnum)), 0, 1); v@w = lerp(v@w, qconvert(qmultiply(quat1, qinvert(quat))) * timeMult, bias); v@v = lerp(v@v, (pos - @P) * timeMult, bias); int hasAdiff = haspointattrib(0, "__guide_angleDiff"); int hasLdiff = haspointattrib(0, "__guide_linearDiff"); if(hasAdiff && hasLdiff) { setpointattrib(0, "__guide_prP", @ptnum, pos, "set"); setpointattrib(0, "__guide_prQ", @ptnum, quat1, "set"); } } } else { i@group___guided = 0; }
  6. particles around the mesh

    Hi Michal, does this help? Pop_Follow_Surface_003.hiplc
  7. Smoke from scratch, add force

  8. Smoke from scratch, add force

    To do this the right way take a look into the gas wind. The quick and dirty way is to simply advert the fields with you force, but this is not recommended, because it leads to wrong velocities.
  9. Ah, your right better to use a dictionary. probably you need to add the script to the "code" paramterer defaults. But Tomas is right - better embed the code to a hda. The way I did it (this code parameter) is more of a hack to be able not to use a hda.
  10. If you want to keep it a subnet. This is the way to go. DropdownToChangeValues_fix.hipnc In the sliders working geo
  11. You will need a python script for this to work. Do you want to make a hda or keep it a subnet?
  12. Hi! I want to share with you a little script I did which I think is quite useful. It allows you to convert for example alembic cameras to regular houdini cameras. Additionally it can scale cameras correctly and in general bake cameras. You will find the script here: MyWebsite
  13. check out the rivet node: https://www.sidefx.com/docs/houdini/nodes/obj/rivet.html
  14. Hi, is there a way of chaning the geo assigned to a packed primitive?
  15. Opencl Functions

    Ah, awesome! So many new functions. Thanks!