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hindukush

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Everything posted by hindukush

  1. Robust solution for RBD Fracture???

    Hello, usually when this happend to me it means problems in mesh i created.Maybe you have some double points there or some points not merged.Try to use a fuse node before the fracture. C.
  2. Animated object and rdb rigid body - water simulation

    Hello, try this method(http://ikatnek.blogspot.com/p/make-objects-float.html),and if you have keyframe animated object switch to rbd a few frame before the impact with water(maybe there is a better solution). C.
  3. Particles floating around force field

    Hello, here a scene using the proximity to drive attraction/repulsion, btw is not a good result, i got some jittering in the movement of the particles, and also some points quit the animation group and stand still, can't figure out why. Not implemented the minpos to follow animated mesh cos i'm searching the basic look, wich is more fluid and natural of course:-) Thanks alot to anybody could give a look to the scene. C. RAIN_SHIELD_odforce.hip
  4. Particles floating around force field

    Hi everybody! i'm stuck in an apparently easy task, i need some rain particles to be floating around a force field. As if they where trapped to stay at a certain distance from a moving surface. With pop attract or vex i can do it point to point but in this case the point number is changing. A little hint on how approach this situation would be great! Thank you so much! C.
  5. Particles floating around force field

    Thanks Atom! Yes it could be really usefull!! But i can't menage to use it in this situation. Thinking to the single rain drop, it should fall as usual than slow down in proximity of a mesh, and than starting to floating around the impact point like it was pinned but with low stiffness. Theorically i would detect proximity, than remove from gravity group and add drag. Than i could maybe using something like minpos. But not really sure, going to try and share a .hip. C.
  6. Subfragments constraints

    Yessss!That is the result! As usual is the name attribute making me go crazy!I should have bet on it!;-) Thanks alot! C.
  7. Subfragments constraints

    Hello! Can anybody give a look into the scene attached? I'm failing setting hard constraints between subfragments. Looks like the solver (bullet sop version)completely ignore them..maybe is just because is too late and my brain disconnected:-) Thakns alot!!! Carlo SEC_FRAGMENTS_CONSTRAINTS.hip
  8. Subsequently animating boxes to target position

    Found a solution with popSteerSeek. Here is the scene, maybe it can be usefull to someone. C. fragmets_to original_P.hip
  9. Hello! Can anybody give me a hint;-) I need to animate some fragments from a point in the space to their original position. I would like to animate them one after other so the shape starts to form from the bottom. I can't menage the animation per fragment, like setting random start frame for each one based on id. Thanks alot! Carlo
  10. Get normal from viewport pick

    Thanks alot!
  11. Helloo! I was wondering if is possile to get the normal at a certain point on a geo just picking it from viewport, as a sclupt tool would do aligning the brush to the surface.And of course if is possible pass that normal to another geo. Thanks guys! Carlo
  12. (SOLVED)New RBD switch low res to hi res

    Ty Ultraman! Yes i wasn't passing the name attribute after rbd sim. Finally i got it working using the transform pieces, plugging as template points the last output from rbd solver(the sop version), instead the simulated geo. thanks alot!
  13. Hi everybody, there is a way to switch from low res to hi res with the new rbd tool?Using with proxy geometry if i change edge details the sim changes too. I would like to keep the same sim and change geo after like using dop/io and transform pieces. No success with transform pieces, and i menaged to get translation with copy attribute by name but no rotation. Carlo
  14. New RBD switch low res to hi res

    Hi everybody, there is a way to switch from low res to hi res with the new rbd tool?Using with proxy geometry if i change edge details the sim changes too. I would like to keep the same sim and change geo after like using dop/io and transform pieces. No success with transform pieces, and i menaged to get translation with copy attribute by name but no rotation. Carlo
  15. Hi everybody i'm stuck orienting light copies to the point onto i scatter. Can anybody tell me what is wrong with this opiece of code? for pt in scatterGeo.points(): euler = pt.findPointAttrib(“N”) dir = hou.Vector3((0,1,0)) * hou.hmath.buildRotate(euler) instances.parm('rx').setAttributeValue('N ',dir[0] ) I think there are some basic python stuff error in there:-)
  16. Arnold lights instances normal

    Maibe adding something like this? dirx: euler = hou.parmTuple("r").eval() dir = hou.Vector3((0,1,0)) * hou.hmath.buildRotate(euler) return dir[0] diry: euler = hou.parmTuple("r").eval() dir = hou.Vector3((0,1,0)) * hou.hmath.buildRotate(euler) return dir[1] dirz: euler = hou.parmTuple("r").eval() dir = hou.Vector3((0,1,0)) * hou.hmath.buildRotate(euler) return dir[2]
  17. Hi everybody, i'm facing issues orienting Arnold lights copy to points normal.I'm actually using this .hda (https://www.artstation.com/artwork/zA3BVd) But no chance to get orientation.I should get the point normal and convert to degrees for the light. Can anybody point me in the right direction? Anyone knows a better way to copy arnold lights to points? Thank you sooo much! Carlo The python script that is used is : from math import sqrt def destroyInstance(kwargs): # Define Variable node = kwargs['node'] try: scatterNodePath = node.parm('scatterPath').eval() scatterNode = hou.node(scatterNodePath) scatterGeo = scatterNode.geometry() except: hou.ui.displayMessage('I can\'t find the scatter node "' + scatterNodePath + '" !') exit() scatterNodePath = node.parm('scatterPath').eval() scatterNode = hou.node(scatterNodePath) scatterGeo = scatterNode.geometry() instanceName = node.parm('instanceName').eval() # Instance Loop try: for pt in scatterGeo.points(): nameInstance = instanceName + '_' + str(pt.number()) instances = hou.node('/obj/' + nameInstance) instances.destroy() hou.item('/obj/networkInst').destroy() hou.item('/obj/networkMain').destroy() except: pass def createInstance(kwargs): node = kwargs['node'] # Define Variable try: scatterNodePath = node.parm('scatterPath').eval() scatterNode = hou.node(scatterNodePath) scatterGeo = scatterNode.geometry() except: hou.ui.displayMessage('I can\'t find the scatter node "' + scatterNodePath + '" !') exit() try: instanceNodeName = node.parm('nameNode').eval() test = hou.node('/obj/').createNode(instanceNodeName, "test") test.destroy() except: hou.ui.displayMessage('The name of node "' + instanceNodeName + '" doesn\'t exist ! ') exit() linkPosPts = node.parm('linkPosPts').eval() instanceName = node.parm('instanceName').eval() linkAttribPt = node.parm('linkAttribPt').eval().split() copyPtAttribValue = node.parm('copyPtAttribValue').eval().split() linkParmFirstInstance = node.parm('linkParmFirstInstance').eval().split() revertParmValue = node.parm('revertParmValue').eval().split() parmList = revertParmValue + linkParmFirstInstance + copyPtAttribValue +linkAttribPt attribList = linkAttribPt + copyPtAttribValue # Instance Loop for pt in scatterGeo.points(): # Create Light nameInstance = instanceName + '_' + str(pt.number()) try: test = hou.node('/obj/' + nameInstance).name() networkBoxMain = hou.node('/obj/' + 'networkMain') instances = hou.node('/obj/' + nameInstance) firstRun = 0 except: # Create Node firstRun = 1 instances = hou.node('/obj/').createNode(instanceNodeName, nameInstance) #TEST if nameInstance == instanceName + '_0': for p in parmList: try: instances.parm(p).eval() except: hou.ui.displayMessage('The parameter "' + p + '" doesn\'t exit !') if(firstRun == 1): instances.destroy() exit() for a in attribList: try: pt.attribValue(a) except: hou.ui.displayMessage('The Attribut "' + a + '" doesn\'t exit !') if(firstRun == 1): instances.destroy() exit() # Position Light if linkPosPts == 1: instances.parm('tx').setExpression('point("' + scatterNodePath + '", ' + str(pt.number()) + ', "' + 'P' + '", 0)') instances.parm('ty').setExpression('point("' + scatterNodePath + '", ' + str(pt.number()) + ', "' + 'P' + '", 1)') instances.parm('tz').setExpression('point("' + scatterNodePath + '", ' + str(pt.number()) + ', "' + 'P' + '", 2)') else : instances.parm('tx').deleteAllKeyframes() instances.parm('tx').set(pt.position()[0]) instances.parm('ty').deleteAllKeyframes() instances.parm('ty').set(pt.position()[1]) instances.parm('tz').deleteAllKeyframes() instances.parm('tz').set(pt.position()[2]) # Revert parm value to default value for rpv in revertParmValue: instances.parm(rpv).deleteAllKeyframes() instances.parm(rpv).revertToDefaults() # Copy Points Value in Paramaters for cap in copyPtAttribValue: instances.parm(cap).deleteAllKeyframes() instances.parm(cap).set(pt.attribValue(cap)) # Link Points Value in Paramaters for lap in linkAttribPt: type = scatterGeo.findPointAttrib(lap).dataType() if str(type) == "attribData.String" : print(type) instances.parm(lap).setExpression('points("' + scatterNodePath + '", ' + str(pt.number()) + ', "' + lap + '")') else : instances.parm(lap).setExpression('point("' + scatterNodePath + '", ' + str(pt.number()) + ', "' + lap + '", 0)') if pt.number() == 0 : # Color Node instances.setColor(hou.Color((1.0, 0.72, 0))) else : instances.setColor(hou.Color((1, 0.98, 0.67))) # Link Paramaters To First Instance's paramaters for lpfi in linkParmFirstInstance: instances.parm(lpfi).setExpression('chs("/obj/' + instanceName + '_0/' + lpfi + '")') # NetworkBox networkBoxMain = hou.item('/obj/networkMain') networkBoxInst = hou.item('/obj/networkInst') try: if networkBoxMain.comment() == instanceName: networkBoxMain.destroy(False) except: pass try: if networkBoxInst.comment() == (instanceName + "_Instance"): networkBoxInst.destroy(False) except: pass networkBoxMain = hou.node('/obj/').createNetworkBox('networkMain') networkBoxMain.setComment(instanceName) networkBoxMain.setColor(hou.Color((0.98, 0.78, 0.26))) networkBoxMain.setMinimized(1) networkBoxInst = hou.node('/obj/').createNetworkBox('networkInst') networkBoxInst.setComment(instanceName + "_Instance") networkBoxInst.setColor(hou.Color((1, 0.98, 0.67))) networkBoxInst.setMinimized(1) col = round(sqrt(len(scatterGeo.points()))) for pt in scatterGeo.points(): nameInstance = instanceName + '_' + str(pt.number()) i = pt.number() node = hou.node('/obj/' + instanceName + '_' + str(i)) if i == 0: node.setPosition([.2, .8]) networkBoxMain.addItem(node) networkBoxMain.addNetworkBox(networkBoxInst) else : networkBoxInst.addItem(node) tmpPos = [i%col*3, round((col*col-i / col)-.5)] node.setPosition(tmpPos) networkBoxInst.resize([1, 1]) networkBoxInst.setPosition([1.5, 0]) networkBoxMain.resize([1, 1]) tmpPos = scatterNode.parent().position() tmpPos[0] += 4 networkBoxMain.setPosition(tmpPos) networkBoxMain.setMinimized(0)
  18. Pyro avoid color blending

    Hi everybody! I'm working on a soap bubble effect. The result using 2d pyro is pretty good but i would like to avoid color blending.Like would be if was pops sim. Both results are attached. Ty in advance! Carlo
  19. Pyro avoid color blending

    Thanks man! Im not skilled enough to get what you did there:-(Where do you feed color in that volume? And also can't find that example file...ty again..and sorry for noobness:-) Carlo
  20. Pyro avoid color blending

    Yes, in your example i see much less blending.May you try to add rgb colors and see if it works properly? How did you acheive that? Thakns alot! Carlo
  21. Pyro copy Cd field from previous frame (SOLVED)

    With furter inspections i found the issue.Is the OPNECL, enabling it in the sim gives that problem in the advection of Cd.Using the gas advect field bypass that.In fact using OPENCL in the gas advect field too make the issue come back again.
  22. Hi everybody! It is possible to copy Cd field from previous frame in a pyro simulation?I'm doing a 2d fluid sim and somehow the i have yellow color wich keep accumulating.Maybe copy color from prev frame solve this. Thanks in advance. Carlo
  23. Pyro copy Cd field from previous frame (SOLVED)

    Hi! Ty for the reply!Finally i managed it with a gas advect field.Not sure why otherwise was't working.But now is quite perfect.I just would avoid color blending but not sure if is possible. Carlo
  24. Rbd subfracturing

    Hi everybody, i'm tryng to subfracture some rbd pieces created with the rbdMaterialFracture node. Like the big chunks in this video. How can i create constraint between the subfractured fragments?I think i'm missing something about the new rbd set of tools... Thanks alot, Carlo -EDIT- I FINALLY SWITCHED TO CLASSIC RBD INSIDE DOP NETWORK..OLD SCHOOL METHOD LOOKS LIKE WORKING......ANY SUGGESTION ABOUT RECURSIVE FRACTURING WITH THE NEW RBD SET?
  25. Whitewater artifacts

    Hi everybody, i'm facing some weird artifacts in whitewater when increasing guided ocean particle separation to 0.01, if i use 0.02 everything works as expected. I did also try to play with whitewater resolution but no change in that artifact.
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