editor.curve

Curve asset editing (float, vector, color curves)

`editor.curve.create`

Creates a new curve asset (float, color, or vector).

Name	Type	Required	Description
`path`	string	Yes	Content directory (e.g. "/Game/Curves")
`name`	string	Yes	Curve asset name
`curve_type`	string	No	"float", "color", or "vector" (default "float")

Returns

Field	Type	Description
`asset_path`	string	Full asset path
`curve_type`	string	Curve type
`name`	string	Curve name

Example Request

{ "jsonrpc": "2.0", "id": 1, "method": "editor.curve.create", "params": { "path": "/Game/Curves", "name": "C_Fade", "curve_type": "float" } }

`editor.curve.getInfo`

Returns information about all curves in a curve asset.

Name	Type	Required	Description
`asset_path`	string	Yes	Curve asset path

Returns

Field	Type	Description
`asset_path`	string	Asset path
`curve_type`	string	"float", "color", or "vector"
`num_curves`	number	Number of sub-curves
`curves`	array	Each: {label, num_keys, time_min, time_max, value_min, value_max}

Example Request

{ "jsonrpc": "2.0", "id": 1, "method": "editor.curve.getInfo", "params": { "asset_path": "/Game/Curves/C_Fade" } }

`editor.curve.getKeys`

Returns all keys in a curve (for multi-channel curves, specify curve_index).

Name	Type	Required	Description
`asset_path`	string	Yes	Curve asset path
`curve_index`	number	No	Channel index for color/vector curves (default 0)

Returns

Field	Type	Description
`keys`	array	Each: {time, value, interp_mode, tangent_mode, arrive_tangent, leave_tangent}
`curve_index`	number	Curve index used
`num_keys`	number	Total key count

Example Request

{ "jsonrpc": "2.0", "id": 1, "method": "editor.curve.getKeys", "params": { "asset_path": "/Game/Curves/C_Fade" } }

`editor.curve.addKey`

Adds a key to a curve at the specified time and value.

Name	Type	Required	Description
`asset_path`	string	Yes	Curve asset path
`time`	number	Yes	Key time
`value`	number	Yes	Key value
`curve_index`	number	No	Channel index (default 0)
`interp_mode`	string	No	"linear", "constant", or "cubic"

Returns

Field	Type	Description
`time`	number	Key time
`value`	number	Key value
`interp_mode`	string	Interpolation mode
`tangent_mode`	string	Tangent mode
`arrive_tangent`	number	Arrive tangent
`leave_tangent`	number	Leave tangent
`curve_index`	number	Curve index

Example Request

{
  "jsonrpc": "2.0", "id": 1, "method": "editor.curve.addKey",
  "params": { "asset_path": "/Game/Curves/C_Fade", "time": 0.0, "value": 0.0, "interp_mode": "cubic" }
}

`editor.curve.removeKey`

Removes a key by index or by nearest time match.

Name	Type	Required	Description
`asset_path`	string	Yes	Curve asset path
`key_index`	number	No*	Key index to remove
`time`	number	No*	Time of nearest key to remove
`curve_index`	number	No	Channel index (default 0)

*One of key_index or time must be provided.

Returns

Field	Type	Description
`success`	bool	Whether key was removed
`removed_index`	number	Index of the removed key
`remaining_keys`	number	Keys remaining after removal

Example Request

{ "jsonrpc": "2.0", "id": 1, "method": "editor.curve.removeKey", "params": { "asset_path": "/Game/Curves/C_Fade", "key_index": 0 } }

`editor.curve.setKey`

Updates properties of an existing key.

Name	Type	Required	Description
`asset_path`	string	Yes	Curve asset path
`key_index`	number	Yes	Key index to update
`curve_index`	number	No	Channel index (default 0)
`time`	number	No	New time
`value`	number	No	New value
`interp_mode`	string	No	New interpolation mode
`tangent_mode`	string	No	New tangent mode
`arrive_tangent`	number	No	New arrive tangent
`leave_tangent`	number	No	New leave tangent

Returns

Field	Type	Description
`time`	number	Key time
`value`	number	Key value
`interp_mode`	string	Interpolation mode
`tangent_mode`	string	Tangent mode
`arrive_tangent`	number	Arrive tangent
`leave_tangent`	number	Leave tangent
`key_index`	number	Key index
`curve_index`	number	Curve index

Example Request

{
  "jsonrpc": "2.0", "id": 1, "method": "editor.curve.setKey",
  "params": { "asset_path": "/Game/Curves/C_Fade", "key_index": 0, "value": 1.0, "interp_mode": "linear" }
}

`editor.curve.clearKeys`

Removes all keys from a curve.

Name	Type	Required	Description
`asset_path`	string	Yes	Curve asset path
`curve_index`	number	No	Channel index (default 0)

Returns

Field	Type	Description
`success`	bool	Whether keys were cleared
`removed_count`	number	Number of keys removed

Example Request

{ "jsonrpc": "2.0", "id": 1, "method": "editor.curve.clearKeys", "params": { "asset_path": "/Game/Curves/C_Fade" } }

`editor.curve.evaluate`

Evaluates the curve at a specified time.

Name	Type	Required	Description
`asset_path`	string	Yes	Curve asset path
`time`	number	Yes	Time to evaluate at
`curve_index`	number	No	Channel index (for specific channel of color/vector)

Returns

Field	Type	Description
`time`	number	Evaluation time
`value`	number or array	Single value for float, array for color/vector (when no curve_index)
`curve_index`	number	Curve index (only when specific channel evaluated)

Example Request

{ "jsonrpc": "2.0", "id": 1, "method": "editor.curve.evaluate", "params": { "asset_path": "/Game/Curves/C_Fade", "time": 0.5 } }

`editor.curve.setExtrapolation`

Sets pre/post-infinity extrapolation modes for a curve.

Name	Type	Required	Description
`asset_path`	string	Yes	Curve asset path
`curve_index`	number	No	Channel index (default 0)
`pre_mode`	string	No*	Pre-infinity: "cycle", "cycle_offset", "oscillate", "linear", "constant", or "none"
`post_mode`	string	No*	Post-infinity: same options as pre_mode

*At least one of pre_mode or post_mode must be provided.

Returns

Field	Type	Description
`success`	bool	Whether extrapolation was set

Example Request

{
  "jsonrpc": "2.0", "id": 1, "method": "editor.curve.setExtrapolation",
  "params": { "asset_path": "/Game/Curves/C_Fade", "pre_mode": "constant", "post_mode": "cycle" }
}

`editor.curve.setKeyTangents`

Sets tangent mode and optionally arrive/leave tangent values for a key.

Name	Type	Required	Description
`asset_path`	string	Yes	Curve asset path
`key_index`	number	Yes	Key index
`tangent_mode`	string	Yes	"auto", "user", or "break"
`curve_index`	number	No	Channel index (default 0)
`arrive_tangent`	number	No	Arrive tangent value
`leave_tangent`	number	No	Leave tangent value

Returns

Field	Type	Description
`success`	bool	Whether tangents were set
`time`	number	Key time
`value`	number	Key value
`interp_mode`	string	Interpolation mode
`tangent_mode`	string	Tangent mode
`arrive_tangent`	number	Arrive tangent
`leave_tangent`	number	Leave tangent
`key_index`	number	Key index

Example Request

{
  "jsonrpc": "2.0", "id": 1, "method": "editor.curve.setKeyTangents",
  "params": { "asset_path": "/Game/Curves/C_Fade", "key_index": 0, "tangent_mode": "user", "arrive_tangent": 0.0, "leave_tangent": 2.0 }
}

`editor.curve.autoSetTangents`

Automatically calculates optimal tangent values for all keys in a curve.

Name	Type	Required	Description
`asset_path`	string	Yes	Curve asset path
`curve_index`	number	No	Channel index (default 0)

Returns

Field	Type	Description
`success`	bool	Whether tangents were auto-set
`num_keys`	number	Number of keys processed

Example Request

{ "jsonrpc": "2.0", "id": 1, "method": "editor.curve.autoSetTangents", "params": { "asset_path": "/Game/Curves/C_Fade" } }