PartOperation
An abstract class that all parts based on solid modeling inherit from.
Summary
Properties
The level of detail used to render the solid modeled part.
An angle in degrees which affects the smooth shading of a solid modeled part.
The number of polygons in this solid model.
Sets whether the PartOperation can be recolored using inherited color properties.
Determines the level of detail the part's physics will adhere to its mesh.
Determines the geometric representation used to compute aerodynamic forces and torques.
Determines whether a part is immovable by physics.
The angular velocity of the part's assembly.
The center of mass of the part's assembly in world space.
The linear velocity of the part's assembly.
The total mass of the part's assembly.
A reference to the root part of the assembly.
Determines whether the part will physically interact with audio simulation, similar to CastShadow for lighting.
Determines the type of surface for the back face of a part.
Determines the type of surface for the bottom face of a part.
Determines the color of a part.
Determines the position and orientation of the BasePart in the world.
Determines whether a part may collide with other parts.
Determines whether the part is considered during spatial query operations.
Determines if Touched and TouchEnded events fire on the part.
Determines whether or not a part casts a shadow.
Describes the world position in which a part's center of mass is located.
Describes the name of a part's collision group.
Determines the color of a part.
Indicates the current physical properties of the part.
Determines several physical properties of a part.
Used to enable or disable aerodynamic forces on parts and assemblies.
The actual physical size of the BasePart as regarded by the physics engine.
Determines the type of surface for the front face of a part.
Determines the type of surface for the left face of a part.
Determines a multiplier for BasePart.Transparency that is only visible to the local client.
Determines whether a part is selectable in Studio.
Describes the mass of the part, the product of its density and volume.
Determines whether the part contributes to the total mass or inertia of its rigid body.
Determines the texture and default physical properties of a part.
The name of MaterialVariant.
Describes the rotation of the part in the world.
Specifies the offset of the part's pivot from its CFrame.
Describes the position of the part in the world.
Time since last recorded physics update.
Determines how much a part reflects the skybox.
Describes the smallest change in size allowable by the Resize() method.
Describes the faces on which a part may be resized.
Determines the type of surface for the right face of a part.
The main rule in determining the root part of an assembly.
The rotation of the part in degrees for the three axes.
Determines the dimensions of a part (length, width, height).
Determines the type of surface for the top face of a part.
Determines how much a part can be seen through (the inverse of part opacity).
Methods
Substitutes the geometry of this PartOperation with the geometry of another PartOperation.
Apply an angular impulse to the assembly.
Apply an impulse to the assembly at the assembly's center of mass.
Apply an impulse to the assembly at specified position.
Returns whether the parts can collide with each other.
Checks whether you can set a part's network ownership.
Returns a table of parts connected to the object by any kind of rigid joint.
Return all Joints or Constraints that is connected to this Part.
Returns the value of the Mass property.
Returns the current player who is the network owner of this part, or nil in case of the server.
Returns true if the game engine automatically decides the network owner for this part.
Returns the base part of an assembly of parts.
Returns a table of all BasePart.CanCollide true parts that intersect with this part.
Returns the linear velocity of the part's assembly at the given position relative to this part.
Returns true if the object is connected to a part that will hold it in place (eg an Anchored part), otherwise returns false.
Changes the size of an object just like using the Studio resize tool.
Sets the given player as network owner for this and all connected parts.
Lets the game engine dynamically decide who will handle the part's physics (one of the clients or the server).
- IntersectAsync(parts : Instances,collisionfidelity : Enum.CollisionFidelity,renderFidelity : Enum.RenderFidelity):Instance
Creates a new IntersectOperation from the overlapping geometry of the part and the other parts in the given array.
- SubtractAsync(parts : Instances,collisionfidelity : Enum.CollisionFidelity,renderFidelity : Enum.RenderFidelity):Instance
Creates a new UnionOperation from the part, minus the geometry occupied by the parts in the given array.
- UnionAsync(parts : Instances,collisionfidelity : Enum.CollisionFidelity,renderFidelity : Enum.RenderFidelity):Instance
Creates a new UnionOperation from the part, plus the geometry occupied by the parts in the given array.
Gets the pivot of a PVInstance.
Transforms the PVInstance along with all of its descendant PVInstances such that the pivot is now located at the specified CFrame.
Events
Events inherited from BasePartFires when a part stops touching another part as a result of physical movement.
Fires when a part touches another part as a result of physical movement.
Properties
RenderFidelity
This property determines the level of detail that the solid modeled part will be shown in. It can be set to the possible values of the Enum.RenderFidelity enum.
The default value is Automatic, meaning the part's detail is based on its distance from the camera as outlined in the following table.
| Distance From Camera | Render Fidelity |
|---|---|
| Less than 250 studs | Highest |
| 250-500 studs | Medium |
| 500 or more studs | Lowest |
SmoothingAngle
This property represents an angle in degrees for a threshold value between face normals on a solid modeled part. If the normal difference is less than the value, normals will be adjusted to smooth the difference. While a value between 30 and 70 degrees usually produces a good result, values between 90 and 180 are not recommended as they may cause a "shadowing" effect on unions with sharp edges.
Note that smoothing does not affect the normals between different materials or different colors.
UsePartColor
Sets whether the PartOperation can be recolored using the BasePart.Color or BasePart.BrickColor properties. When true, the entire union will be colored as per Color or BrickColor. When false, the parts in the union will maintain their original colors from before the onion operation was performed.
Methods
SubstituteGeometry
Substitutes the geometry of this PartOperation with the geometry of another PartOperation. This makes it easier to utilize the geometry of a solid modeling operation like UnionAsync(), SubtractAsync(), or IntersectAsync() but maintain properties, attributes, tags, and children of the main part such as Attachments, Constraints, ParticleEmitters, light objects, decals, and more. This approach also circumvents the potential "flicker" of completely replacing the original PartOperation with another.
Note that if you're calling this method on a PartOperation with child Attachments or Constraints, you should calculate the affected instances with CalculateConstraintsToPreserve(), then drop those whose recommended parent is nil.
Parameters
The PartOperation whose geometry will substitute the geometry of this PartOperation.
Returns
Code Samples
The following example substitutes the geometry of one PartOperation with the geometry of another PartOperation, then drops constraints/attachments that should not be preserved after substitution.
local GeometryService = game:GetService("GeometryService")
local mainPart = workspace.PurpleBlock
local otherParts = { workspace.BlueBlock }
local options = {
CollisionFidelity = Enum.CollisionFidelity.Default,
RenderFidelity = Enum.RenderFidelity.Automatic,
SplitApart = false,
}
local constraintOptions = {
tolerance = 0.1,
weldConstraintPreserve = Enum.WeldConstraintPreserve.All,
}
-- Perform union operation in pcall() since it's asyncronous
local success, newParts = pcall(function()
return GeometryService:UnionAsync(mainPart, otherParts, options)
end)
if success and #newParts > 0 and mainPart:IsA("PartOperation") then
-- Set first part in resulting operation as part to use for substitution
-- First part is simply an option; this can be any PartOperation
local substitutePart = newParts[1]
-- Reposition part to the position of main part
substitutePart.CFrame = mainPart.CFrame
-- Calculate constraints/attachments to either preserve or drop
local recommendedTable = GeometryService:CalculateConstraintsToPreserve(mainPart, newParts, constraintOptions)
-- Substitute main part's geometry with substitution geometry
mainPart:SubstituteGeometry(substitutePart)
-- Drop constraints/attachments that are not automatically preserved with substitution
for _, item in pairs(recommendedTable) do
if item.Attachment then
if item.ConstraintParent == nil then
item.Constraint.Parent = nil
end
if item.AttachmentParent == nil then
item.Attachment.Parent = nil
end
elseif item.WeldConstraint then
if item.Parent == nil then
item.WeldConstraint.Parent = nil
end
end
end
-- Destroy other parts
for _, otherPart in pairs(otherParts) do
otherPart.Parent = nil
otherPart:Destroy()
end
end