Questions tagged [drivers]
Blender drivers are a way to control values of properties by means of a function, or a mathematical expression. Use this tag for questions about Blender drivers.
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Want a way to export blender animation which uses deform modifiers and drivers
I've created a page flipping animation in blender using some simple key frames to rotate the plane 180 degrees and some modifiers with drivers so the movement is not entirely rigid. Two deform ...
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Make a Variable Speed Rotation Driver to Influence Another Object
What I want to achieve starts pretty standard: the rotation of object A rotates object B. I use a driver. No prob.
Where I’m stuck is that I want certain portions of A’s rotation to rotate B faster ...
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"use self" in driver inside Geometry Nodes
I need to make a geonode that will be used by several objects.
I need to use a custom property inside the geonode.
This custom property is carried by the object that uses the geonode.
I thought that ...
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Blender freeze move tool (nvidia 940mx----intelcore i5-----mxlinux) [closed]
blender freeze move tool...but can still use mouse and can go to any tab it just blender freeze....image below explain can opens apps browse web etc...currently blender is freeze as I type now can do ...
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Corrective shape keys for IK-driven bone
The bottom bone here is affected by an IK chain:
Unfortunately, it's rotational value doesn't change unless I rotate the bone directly.
This is a problem, because I want to use it's rotational value ...
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how do I make one empty accelerate to the second?
The movement driver already looks in the direction of the empty, and I want it to accelerate towards it as well. I've tried making a function, adding it to driver namespace, but I still get the "...
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Python: Add Shape Key As Driver for Other Shape Key By String Reference
In Python, I need to add a driver to specified target shape key, driven by specified source shape key's value (linking the target's value to the source's.)
An example print of the information I have:
<...
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Bone rotation offset help
I have a series of bones that I want to rotate using only one bone.
Rules:
The rotation of the effected bones rotate only along x axis
The effector bone has a fall off value
The effector bone slides ...
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Expression for Additive Transform Noise
May I reference the current property's value before an expression in an expression?
This driver expression will generate random values between -1 and 1:
...
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How can we make two corrective shapekey driver values to work 50/50 percent each of them to avoid stacking when they move in the same direction?
As I show in my images, when my shapekey drivers both move in the same direction, their powers stacks to each other. I need them to not to stack.
Thanks in advance for replies.
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Change ocean modifier wave direction setting to global coordinates
The Ocean modifier has a "direction" parameter among the settings.
Is there a way to make that a Global setting? It is currently "local x" according to the manual.
Alternatively, ...
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Script to add a driver to "hide" a bone
I'm tryng to write a script that adds a driver to some bones automatically. But I'm facing some problems with the property "hide".
I want to add the driver into the property "Hide" ...
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How to access geometry nodes output value to use as a driver? [duplicate]
This is my setup:
I want to use the 'x' output as a driver for the mesh line endpoint.
I think this answer outlines what I'm supposed to do, but I don't understand how I'm supposed to use scripts.
I ...
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Help Fix shapekeys to custom bone properties addon
There's this free addon that allows creation of custom driven properties from shapekeys automatically using python by selecting the mesh then the bone you want to assign the custom properties in pose ...
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Rotate objects in specific relation to one another
Okay, think of an analog clock, as an easy point of reference. I rotate the minute hand 360 degrees on the X-axis. Can I somehow couple the performed rotation of the minute hand to the hour hand in ...
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Use a custom noise driver for multiple objects without sharing noise seed
I have this blinking driver. I want to use it on multiple characters during a scene except they blink at the same time and interfere with each other.
...
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How Can I Control Emission Strength from a Light's Power Using a Driver
I'm trying to set up a material's "Emission Strength" so that it is controlled by an area light's "Power" value (for example, adjust the light's power, and the emission strength ...
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Dependency cycle frustrations
I often see Dependency cycle detected console errors, but have innocently ignored them as I feel there is an arcane technical language behind the references such as:...
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can cos() function have more variety in terms of animation movement?
I always use cos() driver expression to make simple loop animation.
1st animation curve is baked result of cos(frame/5) of driver expression.
And I think it's too predictable and it needs to be 2nd ...
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Driver not working anymore when appending custom node group
I am creating a custom node group for the Compositor, and I would like to control the size of a cloud texture with a driver within the node group. However, after appending the node group to a new ...
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How can I start a driver at a specific frame?
I want to add a rotation driver so I add #frame / 7 to Rotation X in my case, it works great, but I want to it to start a bit ...
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Mirror expression
How can I rewrite an expression?
I have this expression written by Leander
min(1, max(0, Rest - CL) / max(0.001, FL-CL)) * 0.1
It drives a variable bone from 0 to ...
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Random driver expression for automated blinking
I have a character with eyes.
I have a blink shapekey. and I am using this expression as a driver to randomly blink on certain frames
noise.random() > 0.97
...
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How to convert shape keys into weight bones?
Simply put I have a low poly model with little no skills in clean facial rigging so I use shape keys to give me a better output than what I can do.
Although I was able to setup shape keys and drivers ...
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An equivalent of "Sample Curve" but in a driver expression?
I would like to utilize a curve tangent or a curve normal in my driver (i.e. in its Scripted expression)
When working with geometry there's the "Sample Curve" node for that. Is it possible ...
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Geometry Nodes - Unique Frame Offset for Each Instance?
I am currently working on an animation that resembles a split-flap display like the ones you'd see in an airport. To accomplish this, I am using Geometry Nodes to instance several modules on a plane. ...
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31
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Manual value with a driver
I want to add a driver to the rotation of a bone in pose mode, but I also want to use that rotation manually. In other words, I want the rotation to be calculated by summing the manual value and the ...
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Can I reference "this" when calculating Distance in the Driver dialog?
Is it possible to reference this/self in the "Object 1" or "Object 2" Distance inputs?
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how can I know which shape key drivers are associated with one of my bone?
When inspecting facial rigging, how can I find out which shape key drivers are associated with the mouth bones? I have created several shape keys around the mouth, each corresponding to the nearby ...
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Driving average values with limits in blender
I have two blue bones that move freely along the x axis.
I have mulitple red bones that are ment to only move when they are between the blue bones
the red bones when they are inbetween the blue bones ...
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Drivers to connect locked track object constraint to camera?
I'm trying to do something pretty specific with the hair in my character rig; it's highly stylized, attempting to mimic a 2D look. What I want to do is this:
Have each chunk of the hair mesh set so ...
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Bone Inhereited rotation value
So, simple question. I need both the inherited rotation and the actual rotation of a bone in order to make a driver for a texture. Trouble is I can't find where blender stores the inherited rotation ...
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Is there a way to offset the start of an animation driver?
I have this object with the scale properties keyframed from 0 to 1. Now I want to apply the same animation to other identical objects by making this a driver for them in a way that the start of the ...
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Add driver using Python?
quick version:see the image
In short, I'm looking for correct way to use "driver_add("path", index)" to add driver to geometry node input.
Creating drivers in common modifiers are ...
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How to make a ratchet-like driver that increases a value only when object moves in certain direction and ignores it moving back?
New to drivers and Python in general, I’ve been playing around with it, but I need to do it without any animations or shape keys, tried a bunch of things with my limited knowledge even combining ...
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Roll a wheel along a curving path accurately
This seems like it should be so straightforward (for someone a bit cleverer than me), but I want to be able to roll a wheel accurately along a curving path, with the roll being driven by the follow ...
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How do I change a light's power with two bones using drivers?
I have a rig that has two bones named "cover" and "panel", to simplify lets say these two bones go from 0 to 150, I need it so that when cover is 150 and panel is 150, the light's ...
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#FRAME animation in mesh with armature and animation
Context
I have a main body mesh for which I have multiple accessories (hats, shirts etc). Each accessory is in a separate collection, all accessories are rigged and I have the model in Unity.
The main ...
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What is wrong with my viewport?
I just installed Blender 3.5 and my viewport is completely wrong.
I can't find anything similar to my issue anywhere.
I've installed AMD ProRender plugin.
.
Not sure if it's a hardware issue either.
...
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How to have the same material applied on multiple objects, but control the material parameters for each object individually?
I am making a modular road system where I want to apply an asphalt material with white road markings on many different roads (objects).
Now I want to be able to apply the same asphalt material to all ...
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Control shape keys with drivers to the speed of rotation
I have this scene with a probe and 5-way RCS thrusters. Its rotation is awkward so I don't want to manually animate the thrust of the RCS but instead I want to use drivers that control the shape keys ...
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Can I give drivers to objects in batches?
Can I give drivers to objects in batches, just like link materials or copy modifiers?
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How to access scene camera rotation data in a context driver in geometry nodes?
This question refers to the feature introduced here: https://projects.blender.org/blender/blender/commit/c26566ad
The path listed in this link, camera.matrix_world[3][0], allows for accessing the ...
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Animating two objects rotating around a common axis with a driver affecting one of the objects
I have two objects. Object A has a driver that causes Object B to translate in the Z direction when Object A is rotated around its Z axis.
I want to rotate both objects together around a common axis, ...
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Confusion Adjusting/Using the Rotation Vector of Bones in Drivers
I am currently using bone drivers to basically rig a model I created using geometry nodes. While I have been able to get around issues when the local orientation of a bone differs from the object, I ...
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Blender 3.5 Unsupported graphics card
Having issues both with Meshmixer and Blender failing on launch, Blender gives me an error regarding a graphics card and drivers not able to support OpenGL 3.3.
Currently running a radeon 6600 XT with ...
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Blender 3.5 Unsupportyed graphics card [duplicate]
Having issues both with meshmixer and blender failing on launch, blender gives me an error regarding a graphics card and drivers not able to support OpenGL 3.3
Currently running a radeon 6600 XT with ...
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How to switch between multiple textures in a material using a driver
I have a customizable model with multiple textures for the body (4 to be exact). How would I be able to easily switch between these textures with a driver. If I had 2 I'd be able to use a mix modifier ...
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RGB values driver is working but doesn't update automatically, Blender 3.4.1
This has probably been answered multiple times, but I can't find a solution. I'm building a scene to model stage lighting. I have a bunch of lights and I want an easy way to control their colors and ...
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