How to make an animation of following gif by using Mathematica?
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2$\begingroup$ Which features of this example are essential to consider an answer a good one? $\endgroup$– KubaCommented Sep 28, 2016 at 12:06
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1 Answer
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You can use the new RandomPoint- function to sample points from a sphere and use the second argument of Text to position some text in 3D. Text will automatically make the string face towards the viewer/camera for you.
pts = RandomPoint[Sphere[{0, 0, 0}], 100];
Text["test", #] & /@ pts // Graphics3D[#, SphericalRegion -> True, Boxed -> False] &
Another approach is instead of rotating the entire graphic (as done above) to rotate the points themselves via RotationTransform. This enables the use of coordinate dependent color and size. An appropriate transformation could be
r[angle_?NumericQ, pivot : {_, _}] := RotationTransform[angle Degree, pivot];
and can be used as follows to archive something closer to what you are looking for with color and size scaling done in respect to the y-coordinate
Graphics3D[(Style[Text["test", #], FontSize -> 14 - 5*(#[[2]] + 1),
FontColor -> Blend[{Black, White}, #[[2]]]] & /@
r[0, {{0, 0.2, 1}, {1, 0, 0}}] /@ pts), BoxRatios -> {1, 1, 1},
Boxed -> True, Axes-> True, AxesLabel -> {"x", "y", "z"}]
This can be animated for instance like this
Animate[Graphics3D[(Style[Text["test", #],
FontSize -> 14 - 5*(#[[2]] + 1),
FontColor -> Blend[{Black, White}, #[[2]]]] & /@
r[angle, {{0, 0, 1}, {0.2, -1, 0}}] /@ pts),
BoxRatios -> {1, 1, 1}, SphericalRegion -> True, Boxed -> False,
ViewPoint -> Front], {angle, 0, 360}]
To archive your desired look you might have to play around a bit with the color- and size scaling
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$\begingroup$ Haha, I got that far. Now how to make it smaller and more transparent the further away it is? $\endgroup$ Commented Sep 28, 2016 at 11:55
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$\begingroup$ but I need to rotate graphic without click on. $\endgroup$– vitoCommented Sep 28, 2016 at 12:24
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$\begingroup$ @Kuba I remember seeing that one the other day and it crossed my mind when reading this question. However I think even if one has a sphere (or ball) in place with the correct transparency options, the
Textobjects ignore it and are always drawn on top. I briefly wondered about converting theTexttoFilledCurvesto attempt to circumvent this but I don't thinkGraphics3DacceptsFilledCurves. $\endgroup$ Commented Sep 28, 2016 at 12:29 -
1$\begingroup$ Going for the Reversal age? Good luck. $\endgroup$ Commented Sep 28, 2016 at 13:32