Morphing from one poly object to another
Posted: 21 June 2022 11:07 AM   [ Ignore ]  
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Joined  2020-05-11

I need to create a kind of morphing effect from a human to a werewolf and everything I can find online is people either creating morphs with lathes or visibly destroying the geometry by using polyFX and transitioning in and out of 2 different object to make it look like they are “morphing”...but I need something more “organic” that portrays the feeling of a true “transformation” to a new living being…this would either be done on 2 rigged characters or I could bake out the 2 animations as alembic and try to morph those….any tips on how to achieve such a morph would be greatly appreciated : )

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Posted: 21 June 2022 01:35 PM   [ Ignore ]   [ # 1 ]  
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Hi aedan.d.

A perfect morph would require having one mesh for figure A and a copy of that to shape figure B while not adding or subtracting any points/polygons. This requires a good mesh of figure A with the idea of figure B already in it, with a mesh density needed later on.

A simple way would be to dissolve one object and do the opposite to the other, which often looks cheap and less attractive.
Example (rough)
https://www.amazon.com/clouddrive/share/Dnh6mcNAaFfyNsihXuFOxnqBaiOJfOeaDUqlUXkNCyO

To understand what is needed, let’s look at image morphs. First, the two images need to be evaluated, which feature becomes what after the morph.
The eyes, nose, and mouth are often the key features of the head. So Image a starts to deform these features, so they sit on image B later. Image B moves those features to become A after a while. A to B and B to A, while that deformation happens, A is first visible, then blended over to B. IF that blend is global or progressively localized is based on art direction and other things.

So, how would that work for a 3D object? There are several options to shape A closer to B and B closer to A. each has a PoseMorph, and with some Polygon “shaping” (e.g., Magnet Tool), the middle where they switch from A to B can be achieved.
A rougher approach is via FFD:
https://www.amazon.com/clouddrive/share/OAeRA88kxbt9W3d5kcP6T2sVRJBqC0xHyM8z61bWTIZ

Typically, those effects have some eruptive movements, where transitions can be camouflaged in motion blur. Especially when a beast comes out, it comes in a staccato way, and it is in most Werewolf Movies that I have seen the case. It often comes in a kind of a rhythm, so it looks believable, as the next eruption is predictable. If predictable, you have your audience often convinced.

Besides that, one could also use a method that “melts” two objects and covers the transition quickly. The Volume object can do that.
Example
https://www.amazon.com/clouddrive/share/g8cTYnpMF5mz1nZ5tOQrRqI14aRbqRktfCxUIhsRmiH

Other options come to mind, like the camera deformer to move AtoB, BtoA, or even the Collision deformer, where both get the same deformation at one point and (kind of the middle object method) create so the illusion of morphing.

All the best

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Dr. Sassi V. Sassmannshausen Ph.D.
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Posted: 21 June 2022 02:21 PM   [ Ignore ]   [ # 2 ]  
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P.S.: Here is the Camera Deformer “Morph”

https://www.amazon.com/clouddrive/share/5V9KEAOyro6o549qj05TgqpSHbA3EDfmwxUk4PyEeQq

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Preview
https://www.amazon.com/clouddrive/share/3nqfDjMMwVARWLS6NjZ2D69mLiXdZfnCb7W1P8M1gbG

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Dr. Sassi V. Sassmannshausen Ph.D.
Cinema 4D Mentor since 2004
Maxon Master Trainer, VES member

Photography For C4D Artists: 200 Free Tutorials. Texture, Panorama, HDRI, Camera Projection, etc.
https://www.youtube.com/user/DrSassiLA/playlists

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