daniohayon Posted November 14, 2007 Share Posted November 14, 2007 Hello everyone , I'm working on an animation that require some crane operation. I've rigged the whole thing and it is working great and the key framing is very easy...but(!) I can't seem to figure out a constraint combination for the winch at the far end of the crane. The winch should move/rotate with the arm that its attached to and at the same time be constrained by gravity(hang down). Can someone help? Thanks, Dani Link to comment Share on other sites More sharing options...
daniohayon Posted November 14, 2007 Author Share Posted November 14, 2007 ...I wonder if I'm not clear or it's just hard to do... Link to comment Share on other sites More sharing options...
ameo Posted November 14, 2007 Share Posted November 14, 2007 If I understood you right, here is quick file... If you want to be more realistic try to simulate it with Reactor rope. Link to comment Share on other sites More sharing options...
ameo Posted November 14, 2007 Share Posted November 14, 2007 ... I forget to tell you, play the animation in the file to see is that you needed... Link to comment Share on other sites More sharing options...
daniohayon Posted November 15, 2007 Author Share Posted November 15, 2007 If I understood you right, here is quick file... If you want to be more realistic try to simulate it with Reactor rope. Thanks Ameo, ...but I think I wasn't clear about the combination I need. The problem I found is that the winch is rotating with the arm it is attached too in ALL directions. I would like to constrain it's movement in the Z axis, so it will always hang down and not be 'frozen'. I've marked it with the arrow in the image. D Link to comment Share on other sites More sharing options...
ameo Posted November 15, 2007 Share Posted November 15, 2007 Ok, its clear now... It can be done in several different ways. Here is file with a simple reverse parameter wiring. Link to comment Share on other sites More sharing options...
daniohayon Posted November 15, 2007 Author Share Posted November 15, 2007 Ok, its clear now... It can be done in several different ways. Here is file with a simple reverse parameter wiring. That's it! Can you explain the use of the dummy? ...what different ways are there? Link to comment Share on other sites More sharing options...
ameo Posted November 15, 2007 Share Posted November 15, 2007 I can't explain you well, because my English is not good enough..., thats why I make the file.It's mutch quicker this way Dummy is the "anchor" for the winch. It can be everything , box , mesh, spline but you must have some object that guides the "winch", and in this case it takes angle from the arm to be with vertical Z axis in every one moment , it can be done with wiring x and y position, using constraints, but this was the first that come to my mind. Link to comment Share on other sites More sharing options...
daniohayon Posted November 15, 2007 Author Share Posted November 15, 2007 your English if fine. I can see that the winch is connected to the dummy but I can't find the connection between the arm and the dummy...can you explain that? Link to comment Share on other sites More sharing options...
ameo Posted November 15, 2007 Share Posted November 15, 2007 dummy is linked to arm and dummy-s x rotation is wired to arm x rotation, thats all. You can see the links in schematic view. Link to comment Share on other sites More sharing options...
daniohayon Posted November 15, 2007 Author Share Posted November 15, 2007 dummy is linked to arm and dummy-s x rotation is wired to arm x rotation, thats all. You can see the links in schematic view. Parameter Wiring...ahem...something new for me... Very easy now, thanks Ameo! Link to comment Share on other sites More sharing options...
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