Hey Guys, I'm pretty new to composer. I need an animation to wind a rope on a pulley/drum. There's also a basket to be attached at the end of the rope. Any ideas how can I acheive this?
OK, unfortunately what you are asking to achieve is not going to be very easy but I will try and help you as much as I can.
First off making the basket move with a rope can be done by changeling the geometry of the rope within Composer and just translating the basket to make it move with the rope. The hard part is going to be your pulley and drum. Composer does not let you bend parts to make it actually spool around a pulley. you could possibly get the effect needed by using appearances but you will in the end be faking this motion. Watch the video linked below and this may give you some ideas on how to achieve it. The first video is for fluid but will show you steps required to get this look. The second video is of a belt you may get ideas form also.
You are going to have to play around with you appearances and geometry changes within Composer to see if you can get the look you are after. I am not sure what cad package you used to create your original files but you could also create different amounts of rope on the pulley and fade in fade out views really fast to give you the feel also. Since the only way is to fake it its hard to tell you exactly how to do it since the animation for some may look fine and others may not by matter of opinion.
Hey Derek, I'm using solidworks 2012 for my modeling. The project is complete now I just wanna create an informative video on how it works. It seems the composer has a long way to go before it becomes as good as solidworks.
Thanks for sharing the video but notice you linked the same video twice. Could you post the other video? That video is great btw and I subscribed to the channel :p
I found the attached video in the forum.
Feroz, that is a perfect example.
You can make the actual spools rotate instead of using appearances which would give it a even more realistic look IMO.
Composer is designed more for technical documentation so you have to take your CAD hat off when using it. I agree it has a ways to go as far as complex motion but hopefully it will get there. As you use it more you will get a better idea of what its limitations are, and also it ease when creating animations and documents as opposed to Solidworks. I am hoping in the future the bond between Solidworks and Composer only gets better.
I apologize about the links and have attached the correct one.
I agree. Knowing the limits of the software will get you the best results. You can't assume that anything you can think of (in terms of modelling) can be done as in Solidworks. Lol
So thinking about workarounds and faking the results is the right approach for composer.
About the video, I did come across this video before and it was so complex it gave me a headache XD. Hey I'm just getting started with the composer. I've learned a lot from your videos and other posted by the 3dvia channel and I've got a few ideas to go after. Its getting late, I'll get some sleep and face it tomorrow with a fresh mind. I'll also take a look at the file posted by Feroz when I get on my computer.
Thanks again for the videos.
I also saw a video that explains how to animate a cable wound on a spool in the SolidProfessor website.
Hi Derek and Feroz. I'm still working on the animation. i tried to create a part in solidworks thats in the shape of a ring and fits around the drum, I applied the rope like appearance on it and opened it in composer. Then replicated the rings across the length of the drum. I was thinking as I roll the drum I'll fade out one ring at a time and it would give me what I want but I ended up with so many parts that my computer started lagging. So thats cut off from the list.
I saw the fluid video again and it started making sense this time. Here's what I'm thinking. Forget about the spools for now, just think about a straight cylinder. If I make it completely transparent, it wouldn't exist, then if I move the rope texture along its length it would start appearing inch by inch which would make it look like its being lowered. If I add the basket at the end of it and sync the motion they would look perfect together. Get it?
Now do I create a cylindrical part in solidworks or usee geometry in composer to create the clinder? And how do I make it completely transparent?
Check with Deepak Gupta as he has an animation of a cable been wound on a spool on his blog.
You got any links? He's been blogging since 2009 and has no search bar on his blog
Hi Vipul, sorry for the issue.
http://gupta9665.com has the search button on top right
http://gupta9665.wordpress.com has the search button on left column. Somehow it has messed up. Thanks for bringing it up.
No problem Sir. Hey you know what, I'm trying to acheive is exactly what you did in this video http://www.youtube.com/watch?v=Kyp-dpaNTnc
Only difference is the weight hangs directly to the winding drum. Maybe you could give me some pointers?
I would recommend making any parts you can in Solidworks and not using geometry in Composer.
How you complete this really depends on your project requirements. What are your clients expecting from this video? How many pieces did you have in your file to make it crash? I feel you were probably on a better track on your first try.
Hey Derek, I liked the first idea but if my computer can't handle it, its out of the question. I had about 55 parts which composer couldn't handle.
I was trying to do what was showed in that fluid animation video, but the result is a cloudy texture instead of anything looking like a rope. I think my texture map was not right. i'm working on it
I would say Deepak's video is about the best action you are going to get within Composer. If you look closely at the spool it looks to be done the exact same way as the video Feroz posted. If I had to guess it is done with multiple parts rotating around the spool.I am sure he can explain how to do it. I am also very curious of the process.
As for your texture map I am not sure of your workflow but be sure you are adding it into your Composer file not transferring an appearance from Solidworks. You should be able to find a good rope image for your map just by searching for rope texture on the internet.
On a separate note I would be concerned with your 55 part limit. It is not Composer that can't handle the part count. That is an extremely small part count for your computer to not be able to handle. I have done animations with thousands of parts and of course file says effects speed but I have never had a crash or detrimental issue. I would get with your IT department if you have one and see what they can do. If not call your VAR and see if they can give you some advice.
If you cant get any help those ways you could post your computer specs and see if anyone on the forum could advise you.
Like I said, my computer can't handle it. I'm using a pretty old computer from 2011, a core 2 duo. I never said composer was the problem . This is my personal project and I'm doing it at my home in my free time.
About the texture map, I read somewhere on 3dvia forum that you can apply a solidworks appearance on the square and take a screenshot with PrtScrn and use it as the texture (ofcourse I cropped the other part out of it). It looks good normally but like I said, I doesnt work with texture transformation and transparency. If I want the texture of rope on a cylindrical part, what kind of image do I need? Doe they include alpha channel and stuff?
Anyways, I saw a great video here: http://www.youtube.com/watch?v=5M-4CRnj2xc
I think I should try doing the rope and pulley part in motion study and merge it with the rest of the video from composer. My intent is only to get the idea across of the workings of the model.
Got ya, I would definitely agree that doing the rope and pulley in Solidworks is going to be your best bet. I assumed you were trying to complete your project in Composer only.
If you are going to use Solidworks you can create a texture from any image file. Solidworks turns them into a p2p file or something if I remember (away from Solidworks right now). I have always just used jpg or bmp...really any image type since it converts anyway. I don't think you need to worry about alpha channels and stuff since that is more for image editing in Photoshop and like programs.
I would recommend exporting your Composer animation as images at 30fps and stitching them together in a video editing software with your Solidworks motion study. This would give you a higher quality video than avi output from Composer. I use Adobe Premiere Pro for my editing but there are several free programs including Windows Movie Maker you could use.
If you do choose to do this primarily in Solidworks you would want to move this to that part of the forum and you would get a lot more input. More people on here use Solidworks than Composer.
I do all my animations in Composer and only design and photo render in Solidworks so how a texture would act in a animation in Solidworks I wouldn't have as much knowledge as others.
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