Drivers Panel Blenders
Posted By admin On 18.10.19Using Drivers to control tank tracks and wheels.
There is one moment in node tree, created to – when the position of light source changes its new coordinates every time needs to re-specify manually in Value nodes. It is very inconvenient while setting the scene. To eliminate this fault Blender “drivers” system can be used. Using drivers in node systemLets make a simple scene showing the separation of the planet sides. Create a planet (sphere). The light source (plane) locate at 5,0,0.
Create a material with “day” and “night” separation, append it to planet. Scene with planet, separated by “day” and “night”Simplify nodes tree packing what we do not need during setup into the groups. Select the desired nodes. ctrl+G“Mixing Day and Night” and “Day Night Textures” node groupsThere are only Value nodes with the coordinates of the light source outside groups. We will setup drivers to them.Drivers – a Blender mechanism that uses properties, numbers, transformations, and scripts, to control the values of properties. In simple – drivers proceed dependences some object properties from properties of other objects.
In this case we need to associate values from Value nodes in planet material with lighting plane coordinates.To install driver to the X lighting source coordinate Value node:. Click the right mouse button on the numerical value of Value node for X coordinate. Select Add DriverAdding driver to Value nodeThe value will painted in purple.
Open the Graph Editor. In its menu set Mode to DriversIf node with driver is selected, the Graph Editor displays the name and path of the controlled value, curve and Drivers tab in the N-bar.
Setting driverPay attention to Drivers tab. First we need to configure driver type, regulated with Type parameter. Driver type is a formula that calculates driver output value. There are several variants:. Maximum Value. Minimum Value.
Scripted Expression – output value calculates by the expression on the scripting language. Sum Values.
Average ValuesThese formulas, except Scripted Expression, are needed in order to handle multiple input values by driver. For example, if single object’s position depends on the positions of several other objects. Through a driver that handles multiple input location values, one result can be calculated. A Scripted Expression type you can set to get the output values from scripting language Pithon – this type is used, if other types are not enough.In our case, we have one input value – X coordinate of the light source.
Therefore, we can choose any type of driver, except Scripted Expression. For example – Sum Values. The sum of single number always equal to the same number. In Graph Editor. In N-panel. Drivers tab.
set Type to Sum ValuesNext, pay attention to created by default variable named “var”. This variable is the actual input value, which handles by driver. It also has a type:.
Distance – the distance between two objects. Rotation Difference – the difference between the rotation angles of two objects. Transform Channel – location data of the object. Single Property – value of any object parameter, defined by the scripting languageAll types, except Single Property, are used to obtain values that required more often. Like driver type, Single Property can be used to get any value of the object using the Pithon language. In our case we need to get the X coordinate of the light source.
Therefore, we select the Transform Channel type.In the Object/Bone field specify the object – the source of the input value. In our case – a light plane. It is necessary to specify the desired type of coordinate:. In Graph Editor.
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In N-panel. Drivers tab. “var” variable.
Set Type to Transform Channel. In the Object/Bone field specify the light plane. Set Type to X Location.
Blender Bone Drivers
click the Update Dependencies – upgrade the relationship, ie, apply the specified valuesDriver that connects the X coordinate of the light source and the Value node for this coordinate in the planet node tree is created and configured.
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Settings Active Shape Key IndexA. Value (number)In Relative mode: Value is the current influence of the shape key used for blending betweenthe shape (value=1.0) and its reference key (value=0.0). The reference key is usually the Basis shape.The weight of the blend can be extrapolated above 1.0 and below 0.0.In Absolute mode: Value is the Evaluation Time at which the shape will have maximum influence.
Mute (check mark) If unchecked, the shape key will not be taken into consideration whenmixing the shape key stack into the result visible in the 3D Viewport. Specials New Shape From Mix Add a new shape key with the current deformed shape of the object.This differs from the + button of the list, as that one always copiesthe Basis shape independently of the current mix. Mirror Shape Key If your mesh is symmetrical, in Object Mode, you can mirror the shape keys on the X axis.This will not work unless the mesh vertices are perfectly symmetrical.Use the Mesh ‣ Symmetrize tool in Edit Mode. Mirror Shape Key (Topology) Same as Mirror Shape Key though it detects the mirrored vertices based on the topology of the mesh.The mesh vertices do not have to be perfectly symmetrical for this action to work. Join as Shapes (Transfer Mix)Transfer the current resulting shape from a different object.Select the object to copy, then the object to copy into.Use this action and a new shape key will be added to the active objectwith the current mix of the first object.
Transfer Shape KeyTransfer the active shape key from a different objectregardless of its current influence.Select the object to copy, then the object to copy into.Use this action and a new shape key will be added to the active objectwith the active shape of the first object. Relative Set the shape keys to Relative or Absolute.See. Shape Key Lock (pin icon) Show the active shape in the 3D Viewport without blending.Shape Key Lock gets automatically enabled while the object is in Edit Mode.
Shape Key Edit Mode (edit mode icon) If enabled, when entering Edit Mode the active shape key will not take maximum influence as is default.Instead, the current blend of shape keys will be visible and can be edited from that state. Relative Shape Keys options. Clear Shape Keys X Set all influence values, or weights, to zero.Useful to quickly guarantee that the result shown in the 3D Viewport is not affected by shapes. ValueThe weight of the blend between the shape key and its reference key (usually the Basis shape).A value of 0.0 denotes 100% influence of the reference key and 1.0 of the shape key. Range Minimum and maximum range for the influence value of the active shape key.Blender can extrapolate results when the Value goes lower than 0.0 or above 1.0.
Vertex Group Limit the active shape key deformation to a vertex group.Useful to break down a complex shape into components by assigning temporary vertex groupsto the complex shape and copying the result into new simpler shapes. Relative To Select the shape key to deform from. This is called the Reference Key for that shape.