The rigid body type.įor a passive object, the only property we have in the settings tab is the animated checkbox. This leads us to the first setting for our rigid body object. To make the simulation a bit more interesting we must setup a floor for our object to land on, but by default when we have a floor that we also make a rigid body, it will also fall. Your rigid body objects start to fall and will fall to infinity or until it has reached the largest number your system can handle. If you hit Space, (or Shift+Space if you configured Space for another function) the timeline plays, and the simulation starts immediately. We will continue to cover all of these settings as we move on.Īs we create our first rigid body object, Blender takes care of setting up all the default values for the simulation itself along with making the selected object a rigid body object. The simulation tab then houses all the settings related to this specific rigid body object. Then press Rigid body to make the object a rigid body. When your object is selected, click the simulation tab in the properties panel, that is the icon with a circle orbiting another circle. Often, you are only two clicks away from making an object a rigid body in Blender.
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Related content: Blender Eevee Motion Blur guide How to make a rigid body simulation in Blender? But the most obvious is to use simulations for animation to see the simulation happen in action and interact with the scene. For instance, we can use the rigid body system to create motion blur for falling objects in a single frame.
We can use rigid bodies both for still rendering and animation. The rigid body simulation system is well documented in the Blender manual, and you can find it here:Įxternal content: Blender manual, Rigid body We do not cover constraints to any extent in this article, but we explain the settings related to constraints that can be found in other parts of the rigid body simulation system. The constraint then takes two rigid body objects as input together with a range of other parameters to dictate the relationship and behavior between these rigid bodies. A constraintobject is usually an empty object. The rigid body simulation system also features constraints that make rigid body objects behave in certain ways in relation to each other. It is generally not a simulation that happens in isolation, instead it is able to interact with a lot of other systems within Blender.
Rigid body simulations can also be combined with the animation system or any other simulation type. The rigid body simulation system that Blender uses is called Bullet physics.Ī rigid body simulation is a type of physics simulation where objects can fall, collide, interact with gravity and other forces without deforming the involved objects. What is a rigid body simulation in Blender? Let's now explore them further, starting from the very beginning. This is the basics, but there is a lot more to how rigid body simulations work and its use cases. We can set some of the cubes to passive and have the active rigid body objects fall and bounce off the passive ones to make a more interesting simulation. Press Space or Shift + Space to run the simulation.įrom here we can duplicate the cube multiple times with Shift+D and rotate each one different amount.Change the type from passive to active.Select the plane, got to the physics tab in the properties panel.Select the cube, go to the physics tab in the properties panel.Scale the plane 5-10 times its original size.Open a new scene in Blender and add a plane and move it below the cube.To setup a simple rigid body simulation in Blender, follow these steps: A rigid body object is a solid geometry that has no deformation, or a deformation small enough to be ignored. It is extensively used in games, and it allows objects to fall, collide, slide or bounce without deformation to any involved object.
Rigid body simulation is probably the most common type of physics simulation.
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