I need to have a cube (the BLUE one) to be linked to a parent (the RED one). So when I move the RED cube from the ground the BLUE cube shall move in the same direction proportionally.
How to make this kind of link in Blender?
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2 Answers
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You can give your blue cube a Transformation constraint with the red cube as Target:
Enable the Extrapolate option. In the XYZ fields, choose the values you want, it will determine the ratio. If you choose -10/10 and -10/-10, the blue cube will move as much as the red cube on the given axis. If you choose -10/10 and -20/-20, the blue cube will move twice the distance of the red cube:
answered Aug 31, 2021 at 13:06
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$\begingroup$ Thanks. This way looks quite flexible. $\endgroup$ Commented Aug 31, 2021 at 13:31
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$\begingroup$ unrelated question: What tool are you using for making animated screencaps? $\endgroup$ Commented Aug 31, 2021 at 15:11
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Copy location constraint.
Red is parent of Blue. Both at same location.
Blue is given delta location Z to offset it from Red. Could use Z location
A copy location constraint is added to Blue to Map the global Z location of Red to it's local location. Check use offset to use the delta Z location set above.
Note this all works well until the Parent is transformed, at which case the spaces no longer match.
answered Aug 31, 2021 at 13:15
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$\begingroup$ unrelated question: What tool are you using for making animated screencaps? $\endgroup$ Commented Aug 31, 2021 at 15:11
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$\begingroup$ @MartyFouts blender.meta.stackexchange.com/questions/963/… $\endgroup$– p2orCommented Sep 5, 2021 at 7:39
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$\begingroup$ @p2or thanks. I was just being curious about which of the various available tools people were using. I use ScreenToGif myself; but I'm usually too lazy to do it for an answer. $\endgroup$ Commented Sep 5, 2021 at 13:43