Commission #46: Wedding Photo Rocking/Falling + Sperm Cell Fertilizes Egg Cell [Animation] (Patreon)

I seriously apologize if you experience any lag trying to view these. The animations turned out to be kind of gigantic, and there are 4 different versions I felt I needed to share.

First, there's a simple loop of the wedding photo rocking back and forth. Then there's the full version, where it rocks for a bit, then falls. Then there's the cellular-level impregnation animation. And finally there's the largest animation of them all, combining the two together.

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I was surprised when this option won by a landslide, but I'm very glad that you guys appreciate the more softcore ideas. I think this wedding photo animation will be really effective when it gets mixed into a regular sex scene. And I think the impregnation animation will prove effective too...when the time comes.

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Now, overall, this commission was easier in the sense that I didn't need to bother with all the posing and skin pressing and shit like that. But it still posed two unique challenges.

First, the wedding photo animation was tricky to get right. I had to mess with the mass, the collision box, the frequency and intensity of the shaking...all to try to get a short segment of frames where the wedding photo is teetering but not quite falling right away (it would either fall immediately or not fall at all most the time). I also wanted it to fall forwards instead of backwards. I relied on a rigid body physics simulation, but there were still a lot of dials I had to turn to get results I was pleased with.

Also, I reserve the right to edit the wedding photo further. That was kind of its own pain in the ass but I cut a lot of corners, and I could probably stand to add a few more details to help sell it.

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As for the sperm/egg cell impregnation, the big challenge there was the "slithering" of the sperm cell's tail. There are a reasonable number of Blender tutorials on how to animate the slithering of a snake using a path curve.
But there's a big difference in how the head of a snake moves versus how the head of a sperm cell moves. Namely, a snake's head will weave left and right, while a sperm cell does not move its head at all. Its tail does all the work. This basic little difference actually changed everything, and made all the snake tutorials worthless. I could go into why, but I don't have the energy. Trust me, haha.

So I instead came up with my own idea. I made a simple rig, like so:

 And then I just used that spring bone physics add-on. The blue head bone gently rotates back and forth, while the green bones all naturally shake like little interconnected springs, leading to a natural slithering motion. A strong corrective smooth modifier kept the tail looking nice and smooth.

In short, I let a spring bone simulation animate the tail, and I think it works quite nicely.

Pushing the sperm cell into the egg cell was actually the easiest part, and I'm pleased with how well that turned out for how easy it was. Just used a shape key for the egg cell to have that "dent" in it where the sperm cell is pushing in.

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In any case, hope you like it! Enjoy ~ 💕🎶