Re: How to fix crappy fcurves and pivots on imported Realflow RBD geometry?
you plot continuous rotation (remove gimbals) by using make rotations continous in soft image or euler filter in maya please note that for soft 2014 and up the make rotations continous command has been changed to euler filter as well a la maya. On Thu, May 15, 2014 at 3:36 PM, Morten Bartholdy x...@colorshopvfx.dkwrote: Thanks for both solutions Vincent. I will see if I can get it working. I suspect I will need an ICE tree on each piece of geometry that needs fixing, right!? I have over 2000 so I was sort of hoping I could plug a group in somewhere :) Currently I have managed a solution that allows me to render it in Softimage by merging the boulders into one mesh and plot its shapes with the merge op live. This renders fine with motionblur. The snag is I need to move it back into Maya for rendering it in Vray (the whole project is Maya/Vray - I do the fluids in XSI). When I export the shape plotted geo via FBX with geo cache and import that back in, the motionblur is flawed - see attached image. Morten Den 15. maj 2014 kl. 07:11 skrev Vincent Ullmann vincent.ullm...@googlemail.com: Hi again, here is another try, using ICE. Not totally sure if it works in all cases, but it could at least handle my Animation-Skills. ;-) Am 15.05.2014 06:54, schrieb Vincent Ullmann: Hi Morten, i dont think its possible to solve this in ICE, becouse you cant change the AnimationCurves (While tipping this i actually have a Idea) anyway I found a little snipped in the Web to get the Objects COG in Global Space ( https://gist.github.com/yamahigashi/9309426 ) Now I just wrapped this in a little Loop, and created some PoseConstrains. After executing the Script, you just have to - Plot the Nulls Transforms - Remove the RBDs Transforms - Parent or Constrain or Envelope the RBD's to the Nulls Hope this works. Could'nt test this just some thoughts. ;-) Vincent Am 14.05.2014 16:22, schrieb Morten Bartholdy: I need to find a way to fix fcurves and pivots on a large number of objects (tumbling boulders) RBD simulated in Realflow (don't ask). When they come in they move correctly, but their pivots are way off from the geometry and fcurves suffer from gimbal flipping, so motionblur obviously doesn't render properly. I was thinking it would be relatively simple to get good motiondata by piping them through ICE, calculate motionvectors for each vertex and set the data again. I guess there is a way to move the pivot of each object to its centre too, while maintaining the same motion. It is however way beyond my ICE capabilities, so I am looking for tutorials, pointers, scripts or possibly other tools that might do the trick. Thanks Morten --
Re: How to fix crappy fcurves and pivots on imported Realflow RBD geometry?
Thanks for reminding me Alok - I had forgotten that one. It only fixes the rotations though - I still get wonky motionblur with pivots fra from the geometry. Morten Den 15. maj 2014 kl. 13:10 skrev Alok Gandhi alok.gandhi2...@gmail.com: you plot continuous rotation (remove gimbals) by using make rotations continous in soft image or euler filter in maya please note that for soft 2014 and up the make rotations continous command has been changed to euler filter as well a la maya. On Thu, May 15, 2014 at 3:36 PM, Morten Bartholdy x...@colorshopvfx.dk mailto:x...@colorshopvfx.dk wrote: Thanks for both solutions Vincent. I will see if I can get it working. I suspect I will need an ICE tree on each piece of geometry that needs fixing, right!? I have over 2000 so I was sort of hoping I could plug a group in somewhere :) Currently I have managed a solution that allows me to render it in Softimage by merging the boulders into one mesh and plot its shapes with the merge op live. This renders fine with motionblur. The snag is I need to move it back into Maya for rendering it in Vray (the whole project is Maya/Vray - I do the fluids in XSI). When I export the shape plotted geo via FBX with geo cache and import that back in, the motionblur is flawed - see attached image. Morten Den 15. maj 2014 kl. 07:11 skrev Vincent Ullmann vincent.ullm...@googlemail.com mailto:vincent.ullm...@googlemail.com : Hi again, here is another try, using ICE. Not totally sure if it works in all cases, but it could at least handle my Animation-Skills. ;-) Am 15.05.2014 06:54, schrieb Vincent Ullmann: Hi Morten, i dont think its possible to solve this in ICE, becouse you cant change the AnimationCurves (While tipping this i actually have a Idea) anyway I found a little snipped in the Web to get the Objects COG in Global Space ( https://gist.github.com/yamahigashi/9309426 https://gist.github.com/yamahigashi/9309426 ) Now I just wrapped this in a little Loop, and created some PoseConstrains. After executing the Script, you just have to - Plot the Nulls Transforms - Remove the RBDs Transforms - Parent or Constrain or Envelope the RBD's to the Nulls Hope this works. Could'nt test this just some thoughts. ;-) Vincent Am 14.05.2014 16:22, schrieb Morten Bartholdy: I need to find a way to fix fcurves and pivots on a large number of objects (tumbling boulders) RBD simulated in Realflow (don't ask). When they come in they move correctly, but their pivots are way off from the geometry and fcurves suffer from gimbal flipping, so motionblur obviously doesn't render properly. I was thinking it would be relatively simple to get good motiondata by piping them through ICE, calculate motionvectors for each vertex and set the data again. I guess there is a way to move the pivot of each object to its centre too, while maintaining the same motion. It is however way beyond my ICE capabilities, so I am looking for tutorials, pointers, scripts or possibly other tools that might do the trick. Thanks Morten --
Re: How to fix crappy fcurves and pivots on imported Realflow RBD geometry?
- that should have been far from the geometry. Think banana motionblur :/ MB Den 15. maj 2014 kl. 15:19 skrev Morten Bartholdy x...@colorshopvfx.dk: Thanks for reminding me Alok - I had forgotten that one. It only fixes the rotations though - I still get wonky motionblur with pivots fra from the geometry. Morten Den 15. maj 2014 kl. 13:10 skrev Alok Gandhi alok.gandhi2...@gmail.com: you plot continuous rotation (remove gimbals) by using make rotations continous in soft image or euler filter in maya please note that for soft 2014 and up the make rotations continous command has been changed to euler filter as well a la maya. On Thu, May 15, 2014 at 3:36 PM, Morten Bartholdy x...@colorshopvfx.dk mailto:x...@colorshopvfx.dk wrote: Thanks for both solutions Vincent. I will see if I can get it working. I suspect I will need an ICE tree on each piece of geometry that needs fixing, right!? I have over 2000 so I was sort of hoping I could plug a group in somewhere :) Currently I have managed a solution that allows me to render it in Softimage by merging the boulders into one mesh and plot its shapes with the merge op live. This renders fine with motionblur. The snag is I need to move it back into Maya for rendering it in Vray (the whole project is Maya/Vray - I do the fluids in XSI). When I export the shape plotted geo via FBX with geo cache and import that back in, the motionblur is flawed - see attached image. Morten Den 15. maj 2014 kl. 07:11 skrev Vincent Ullmann vincent.ullm...@googlemail.com mailto:vincent.ullm...@googlemail.com : Hi again, here is another try, using ICE. Not totally sure if it works in all cases, but it could at least handle my Animation-Skills. ;-) Am 15.05.2014 06:54, schrieb Vincent Ullmann: Hi Morten, i dont think its possible to solve this in ICE, becouse you cant change the AnimationCurves (While tipping this i actually have a Idea) anyway I found a little snipped in the Web to get the Objects COG in Global Space ( https://gist.github.com/yamahigashi/9309426 https://gist.github.com/yamahigashi/9309426 ) Now I just wrapped this in a little Loop, and created some PoseConstrains. After executing the Script, you just have to - Plot the Nulls Transforms - Remove the RBDs Transforms - Parent or Constrain or Envelope the RBD's to the Nulls Hope this works. Could'nt test this just some thoughts. ;-) Vincent Am 14.05.2014 16:22, schrieb Morten Bartholdy: I need to find a way to fix fcurves and pivots on a large number of objects (tumbling boulders) RBD simulated in Realflow (don't ask). When they come in they move correctly, but their pivots are way off from the geometry and fcurves suffer from gimbal flipping, so motionblur obviously doesn't render properly. I was thinking it would be relatively simple to get good motiondata by piping them through ICE, calculate motionvectors for each vertex and set the data again. I guess there is a way to move the pivot of each object to its centre too, while maintaining the same motion. It is however way beyond my ICE capabilities, so I am looking for tutorials, pointers, scripts or possibly other tools that might do the trick. Thanks Morten --
Re: How to fix crappy fcurves and pivots on imported Realflow RBD geometry?
Vincent, Another method, is keeping the fcurves the way they are, would be to use an ice tree or script to define new user motion on the meshes. So the motion blur is calculated properly. On Wednesday, May 14, 2014, Vincent Ullmann vincent.ullm...@googlemail.com wrote: Hi again, here is another try, using ICE. Not totally sure if it works in all cases, but it could at least handle my Animation-Skills. ;-) Am 15.05.2014 06:54, schrieb Vincent Ullmann: Hi Morten, i dont think its possible to solve this in ICE, becouse you cant change the AnimationCurves (While tipping this i actually have a Idea) anyway I found a little snipped in the Web to get the Objects COG in Global Space (https://gist.github.com/yamahigashi/9309426) Now I just wrapped this in a little Loop, and created some PoseConstrains. After executing the Script, you just have to - Plot the Nulls Transforms - Remove the RBDs Transforms - Parent or Constrain or Envelope the RBD's to the Nulls Hope this works. Could'nt test this just some thoughts. ;-) Vincent Am 14.05.2014 16:22, schrieb Morten Bartholdy: I need to find a way to fix fcurves and pivots on a large number of objects (tumbling boulders) RBD simulated in Realflow (don't ask). When they come in they move correctly, but their pivots are way off from the geometry and fcurves suffer from gimbal flipping, so motionblur obviously doesn't render properly. I was thinking it would be relatively simple to get good motiondata by piping them through ICE, calculate motionvectors for each vertex and set the data again. I guess there is a way to move the pivot of each object to its centre too, while maintaining the same motion. It is however way beyond my ICE capabilities, so I am looking for tutorials, pointers, scripts or possibly other tools that might do the trick. Thanks Morten
How to fix crappy fcurves and pivots on imported Realflow RBD geometry?
I need to find a way to fix fcurves and pivots on a large number of objects (tumbling boulders) RBD simulated in Realflow (don't ask). When they come in they move correctly, but their pivots are way off from the geometry and fcurves suffer from gimbal flipping, so motionblur obviously doesn't render properly. I was thinking it would be relatively simple to get good motiondata by piping them through ICE, calculate motionvectors for each vertex and set the data again. I guess there is a way to move the pivot of each object to its centre too, while maintaining the same motion. It is however way beyond my ICE capabilities, so I am looking for tutorials, pointers, scripts or possibly other tools that might do the trick. Thanks Morten
Re: How to fix crappy fcurves and pivots on imported Realflow RBD geometry?
Hi Morten, i dont think its possible to solve this in ICE, becouse you cant change the AnimationCurves (While tipping this i actually have a Idea) anyway I found a little snipped in the Web to get the Objects COG in Global Space (https://gist.github.com/yamahigashi/9309426) Now I just wrapped this in a little Loop, and created some PoseConstrains. After executing the Script, you just have to - Plot the Nulls Transforms - Remove the RBDs Transforms - Parent or Constrain or Envelope the RBD's to the Nulls Hope this works. Could'nt test this just some thoughts. ;-) Vincent Am 14.05.2014 16:22, schrieb Morten Bartholdy: I need to find a way to fix fcurves and pivots on a large number of objects (tumbling boulders) RBD simulated in Realflow (don't ask). When they come in they move correctly, but their pivots are way off from the geometry and fcurves suffer from gimbal flipping, so motionblur obviously doesn't render properly. I was thinking it would be relatively simple to get good motiondata by piping them through ICE, calculate motionvectors for each vertex and set the data again. I guess there is a way to move the pivot of each object to its centre too, while maintaining the same motion. It is however way beyond my ICE capabilities, so I am looking for tutorials, pointers, scripts or possibly other tools that might do the trick. Thanks Morten xsi = Application From https://gist.github.com/yamahigashi/9309426; def calc_cog_global_position(obj): ''' calculate objects cog position in global space. returns vector3 ''' #x, y, z, b1, b2, b3 = Application.Selection(0).ActivePrimitive.Geometry.GetBoundingBox() #v = XSIMath.CreateVector3(x, y, z) if obj.ActivePrimitive.Geometry is not None: x = obj.ActivePrimitive.Geometry.Points v = XSIMath.CreateVector3() for p in x: v.Add( v, p.Position) v.Scale(1.0 / x.Count, v) res = XSIMath.MapObjectPositionToWorldSpace(obj.Kinematics.Global.Transform, v) return res else: t = obj.Kinematics.Global.Transform return XSIMath.CreateVector3(t.PosX, t.PosY, t.PosZ) xsi.SetUserPref(SI3D_CONSTRAINT_COMPENSATION_MODE, 1) # Store Sel sel = [] for obj in xsi.Selection: sel.append(obj) for obj in sel: objCOG = calc_cog_global_position(obj) print Obj: + obj.Name + // COG: ( + str(objCOG.X) + / + str(objCOG.Y) + / + str(objCOG.Z) + ) null = xsi.GetPrim(Null, poseCons_ + obj.Name, , ) xsi.Translate(null, objCOG.X, objCOG.Y, objCOG.Z, siAbsolute, siPivotCOG, siObj, siXYZ, , , , , , , , , , 0, ) xsi.ApplyCns(Pose, null, obj, True) xsi.SetUserPref(SI3D_CONSTRAINT_COMPENSATION_MODE, 0)
