Aubrie Lee (aubrie)

7 answers · asked @ video mark 4:17 · Lesson: Character Ball · Course: Blender Animation Bootcamp

How to snap the ball exactly on this face?

I'm trying to have the ball make contact with the wall. I want to do this precisely with snapping, but I can't figure out how. (If I check Project Individual Elements, the ball doesn't snap at all.)


How can I have the ball snap exactly against the wall?

  • crew

    That will snap it using the control location, which is in the middle of the geo.
    The easiest thing is to eyeball it, that's what animating is all about ;)

  • aubrie if you change the object's origin to one of the outer vertices and then change the snap settings to "active" or "centered" does that accomplish what you want?

    • Sadly, I wasn't able to get those to work, but thank you for the ideas!

    • crew

      Yeah, I don't think it's a good idea to be shifting any origins.  That is probably going to shift all the animation you have already done.  Or it could shift the geo away from the rig.  Causing many more headaches.

      But when you're animating a rig, most of the time that rig is linked in. So you wouldn't be able to edit it in that way (which is a good thing)

    • Ahhh. Gotcha. Yeah, listen to Wayne. He knows best for the animation side of things.

      waylow this could possibly work for some scenarios?

      Although they are snapping objects to the ball.

    • crew

      That is perfect for objects like meshes that don't need to be animated.
      But when you're animating, the mesh is controlled by the Armature.
      And the Armature is an Object with a whole bunch of controls inside that object (bones).  You want to be snapping the bones  rather than the actual object....which is possible to do.

      You can snap the bones but the head of the bone will need to be at the point you want to snap to. Which isn't the case in a lot of situations. Plus you need to make sure you control the rotation if snapping too.  By that I mean, it could spin around on a weird angle to get to the snapped position, so if you've animated it and keyed it, this could flip all sorts of ways in order to get to that orientation. (I hope that makes sense  - I've probably made it more difficult to understand haha)

      If you can avoid snapping for a simple situation (like hitting a wall), then that's the quickest and best option.

      If you do need to snap to specific point in space, don't forget that you can position the 3d cursor and then snap the bone to that (location) and then control the rotation yourself.

      In the Crane Arm Lift lesson there's a bit of snapping going on.  Although there's easier ways to do what I've done in that video these days.  I think that is part of the Body Mechanics and Work Flow course.  But the main gist is that you copy the rotation and location and then paste it.

      I hope that has actually helped Shawn, but now when I read it back, I think I might have made it clear as mud haha.

      (sorry if that's the case)