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Corner Pin, Nulls, & Relationships
Im trying to create a sort of 3d extrusion using solids and corner pinning. I have “expressed” the relationships between them. I have a BOX, Bottom Layer, & Side Layer. All my layers are using corner pinning. So my BOX’s Lower Left corner pin is linked to the Bottom Layer’s upper left.. etc.. My question is how to create a null in such a way that the corner pins from my main BOX will follow in unity, maintaining a perfect square? When I keyframe each corner pin i get deviation from the shape.
My first thought was to create 4 nulls and link each position to each of the corner pins and Parent that to a Master Null.. ? I think Im making this more difficult that it is.. I was hoping for some suggestions 🙂
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4 Replies
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I’m having trouble picturing the effect you’re trying to achieve.
Why not just use 3D layers configured into a box?
Dan
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I have created 3 Comp Size Solids (Diff. shades of Grey) for which I have added the corner pin effect for each one. (BOX, Bottom, Side)
The “BOX” Solid is corner pinned down to create a smaller box in the center.
The “Bottom” Solid is corner pinned to create the illusion of a 3d bottom
The “Side” Solid is corner pinned to create the illusion of a 3d side.Picture a extrusion from the bottom right of the Comp leading to the “BOX” in the center. I wanted to be able to move the “BOX” and have the “Bottom” & “Side” move with it. So,
I created the expression linking the Top Left of the “Bottom” to the Bottom Left of the “BOX”, and the Top Right of the “Bottom” to the Bottom Right of the “BOX” as well as
The Top Right of the “Side” to the Top Right of the “BOX” and the Top left of the “Side” to the Bottom Right of the “BOX”. Looks like an extrution from the bottom right up to the Box in the Center. This works perfectly.I wanted to be able to move all of the “BOX”s Corner Pins uniformally so that I do not get any devation when I keyframe. I wanted to be able to Keyframe one of the coordinates and have the others follow suit, if you know what I mean. I was thinking I’d create a Null for each of the “BOX”s coordinates and parent the nulls to a Master Null. But that didn’t work.
I saw your great new website concerning corner pinning, is it something with the anchor points Iam missing?
Im trying to find neat ways of creating the illusion of 3d using corner pinning. 🙂
thanks Dan.
Im learning something new every day from you. You are an invaluable resource. Thank You.Victor
“kis” it
Keep it Simple -
OK – I think I get it now. Keyframe the upper left corner and apply this expression to the other 3 corners:
UL = effect(“Corner Pin”)(“Upper Left”);
delta = UL – UL.valueAtTime(0);
value + deltaYou won’t see anything happen until you keyframe the upper left corner.
Dan
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Dan.
You’ve probably heard this before. You’re awesome.
ThanksVictor
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