Curvy Spline
Reference
General
Interpolation
Defines the curve type: Linear, Bezier, Catmull-Rom, B-Spline or TCB
Restrict To 2D
When enabled, the default SceneView's Move tool is replaced by a 2D version that uses the plane defined in Restricted 2D Plane. If Use Tiny 2D Handles is enabled in the preferences, no tool is shown and you can drag the Control Point gizmos around directly.
Restricted 2D Plane
(Only when Restrict To 2D is true) The local 2D plane to restrict the spline's control points to
Closed
Whether the spline should be closed, i.e. the last Control Point should form a segment to the first Control Point.
Auto End Tangents
(Open Catmull/TCB splines only)
When enabled, the very first/last Control Points are automatically calculated using spline direction.
Orientation
Determines how to calculate orientation:
- None - No orientation at all. The cheapest performance wise
- Static - use Control Point transform rotation
- Dynamic - calculate a least angle, smooth orientation. The most expensive performance wise
In this mode a direction vector is smoothly transported between two orientation anchors with the least possible angle angle difference. To control the flow, you can enable the Orientation Anchor option at certain Control Points. Note that the first Control Point is automatically defined as an orientation anchor.
Global Bezier Options
(Bezier Curves only)
Default Distance %
Determines the default Bezier Handle length when using Auto Handles
Global TCB Options
(TCB curves only)
Tension
Determines global tension used by Control Points
Continuity
Determines global continuity used by Control Points
Bias
Determines global bias used by Control Points
Set Catmull/Cubic/Linear
Presets TCB parameters to “mimic” a certain curve type
Advanced Settings
Show Gizmos
Whether to show the spline in the SceneView or not
Color
Color used to draw the spline. Default value can be defined in the Editor Preferences
Active Color
Color used to draw the spline if selected. Default value can be defined in the Editor Preferences
Cache Density
Determines the cache density. See caching for more details.
Max Points Per Unit
The maximum number of sampling points per world distance unit. Sampling is used in caching, spline rasterization and shape extrusion for example.
Use Pooling
If enabled, Control Points are disabled when deleting and reused when created instead of destroying and creating them. This prevents framerate glitches when adding and removing a lot of CP's at runtime. Pooled GameObjects are stored (invisible) by the Curvy Global Manager object.
Use Threading
If enabled, building the cache is done in parallel on multiple threads. Threads in general have a processing overhead, so if the cache is small enough, the benefits from splitting its building can be smaller that the cost of the threading overhead.
Check Transform
If enabled, any Transform modifications made to the Control Points will cause the spline to update accordingly. if you are not making such modifications while in Play Mode, you can improve performance by disabling this option.
Check Update
Determine when the spline updates itself!
Events
You can react to certain spline related events by adding a handler to the following UnityEvents:
On Initialized
Called after the spline's initialization
On Refresh
Called each time after the spline has refreshed, including its initial update
On After Control Point Changes
Called after one or more ControlPoints were added or deleted
On Before Control Point Add
Called before a Control Point is about to be added. Cancel this event to prohibit adding a CP
On After Control Point Add
Called after a Control Point is added
On Before Control Point Delete
Called before a Control Point is about to be deleted. Cancel this event to prohibit deleting a CP