It was natural for me to work on physics-based rigging after developing some cases of geometry-based rigging!

Physirig is a physics-based rigging system made using Nvidia-PhysX. (It is the project that I'm currently working on.) Physirig works for any custom rig and provides collision detection, physical constraints, physics-based posing, and physical communication across characters and world objects. It would be extremely useful for animating multicharacter scenes(especially fighting scenes), animating complex character-object scenarios. Physirig also makes a huge impact on mechanical riggings; makes them precise, fast, and robust.

Currently, Physirig would be just available in blender but I'm planning to make the same structure for Maya.

Sometimes one can save years by bringing gpu in use!
This collection of shrink-wrapping / heat flow / burning features was necessary to simulate the real effect of flame on cable in the "Cable Termination VR" project. The sphere in the above video shows the flame effect range. Time dependence of surface temperature is implemented here and is modifiable. This time dependence is in a way that if the flame is far from the cable's surface, the temperature starts to decrease over time and the speed of decreasing is modifiable.

Toy2d (Hajmineh) is a set of interesting cardboard-craft kits together with how-to animations and AR interactions. Toy2d addon/plugin helps designers to create unwrapped patterns of 3d models. It automatically makes animations in different manners, shows mesh-cut defects(places that are not able to unwrap with current cutting), shows different parts, and allows designers to manipulate glue places. This tool is developed for both Blender and 3dsMax.

For years, one of my main interests was bringing physics equations into life through simulations, so I did a wide range of simulations from planetary motions and relativistic phenomena to small mechanical systems. Most of the times I develop my own physics from scratch because of the simple nature that usually one single phenomenon has and it makes calculations faster. This interest in physics simulations has resulted in the idea of FeelPhysics. FeelPhysics is an educational game that consists of a set of fully interactive experiments. For example, in the above video, you see a spring simulation(done from scratch) that runs on a single cpu-core at 100-fps(and above) and can simulate transverse, longitudinal, and circular waves. Here, the player can also manipulate mass, stiffness, damping, and gravity. There are lots of other interesting simulations that are not included in this video.

This stylized rig is capable to be exported to any game engine without being worried about rigging defects or missing humanoid features. No blendshapes are used in this rig

Precise kind of rigging and fast, but fairly hard to implement. It is mostly useful for mechanical rigs because of pseudo-primitive shapes that are naturally used in, but also applicable to organics with some approximations.

This rig includes some interesting applications of calculus and geometrical algorithms. For example, the main wheel of the character rolls precisely on its bottom surface and never enters it. The surface itself has a controller and can be transformed separately. Newton-Raphson method is used here to solve corresponding equations(Sounds weird but it's real!). Character's teeth push each other aside when they collide using simple calculations. Notice the rotation of elbow hinges and telescope feature of arms. A bunch of 3d-geometry equations handles those. And finally, like most mechanical riggings, some linear algebra is taken into account to handle crown, eyes, and hands motions.

I've done this rig for an AR project. Geometry-based rigs like this can be easily exported to game engines and can be used on mobile platforms because they are low-level and fast.

This set of scripts exports a custom animation(both model and hair) from Maya and imports them into Blender. This tool was needed because of the shader/renderer license problem that occurred for Deedema team on the "Hardambil" project.

This plugin is called "Maya Environment Simulator". Using this plugin, Maya animators can work inside 3dsMax just like their native software. I've developed all transformation behaviors/tools of this plugin. It is written in maxscript.

Exporting a stylized rig into game engines has never been easy. This tool provides some exportable rigging features that their native forms are not exportable. Squash-stretchy bone chains are one of those non-exportable features.