Interpolate Coords(InterpolateCoords)
From a technical implementation perspective, this node receives a JSON string containing a list of coordinate points and a list of floating-point numbers as the interpolation curve.
Interpolate Coords
From a technical implementation perspective, the Interpolate Coords node receives a JSON string containing a list of coordinate points and a floating-point number as the interpolation curve parameter.
The Interpolate Coords node is an experimental tool for coordinate interpolation. Its core function is to generate a new, smoothly transitioning sequence of coordinates between a series of given coordinate points based on user-provided curve parameters. This node is primarily used for processing and transforming coordinate data, providing a foundation for subsequent visual element positioning or animation path generation.
Node Functionality
From a technical implementation perspective, this node receives a JSON string containing a list of coordinate points and a floating-point number as the interpolation curve parameter. It first parses the coordinate data, calculates the total length of the original path, and then performs linear interpolation between the original coordinate points based on the interpolation curve parameter, ultimately outputting a new coordinate sequence string. Its core mechanism is based on the proportion of the path length to precisely calculate the positions of the new coordinate points.
Node Parameter Description - Interpolate Coords
Control Parameters (Parameters)
| Parameter Name | Data Type | Required | Default Value | Value Range/Options | Description |
|---|---|---|---|---|---|
coordinates | STRING | Yes | - | - | A JSON string containing a list of coordinate points, each with x and y keys. |
interpolation_curve | FLOAT | Yes | - | - | Accepts a single floating-point number. The value should be between 0 and 1, representing the interpolation curve parameter. |
Output
| Parameter Name | Data Type | Description |
|---|---|---|
| coordinates | STRING | Outputs the newly generated coordinate sequence JSON string after interpolation. |
Usage Scenarios
In practical applications, this node can be used to create dynamic camera movement paths. For example, in an animation or video generation workflow, a user can first define the camera coordinates for several keyframes, then input a curve controlling the motion rhythm through this node to generate a smooth camera movement trajectory. The output coordinate sequence can then be passed to a node controlling the camera position.
Notes
Please note that the input coordinate string must adhere to a specific JSON format, namely a list of dictionaries containing x and y keys. If the format is incorrect, the node will fail to parse it and may cause an error. Additionally, the interpolation curve parameter should be a normalized floating-point number between 0 and 1.
Interpolate Coords Node Source Code Link
The Interpolate Coords node is from the ComfyUI-KJNodes node package.
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