ComfyUI Node: 📈 Linear Curve

Linear Curve [Dream]:

The Linear Curve [Dream] node is designed to create a smooth, linear transition between two values over a specified number of frames. This node is particularly useful in animation and procedural generation, where you need to interpolate between an initial and a final value in a controlled manner. By leveraging the frame counter, the node calculates the intermediate values, ensuring a consistent and predictable progression. This can be beneficial for creating gradual changes in animations, such as fading effects, moving objects, or any scenario where a linear interpolation is required.

Linear Curve [Dream] Input Parameters:

initial_value

This parameter sets the starting point of the linear curve. It is a floating-point number with a default value of 0.0. The initial value represents the value at the beginning of the animation or the first frame. Adjusting this value will shift the starting point of the interpolation.

final_value

This parameter defines the endpoint of the linear curve. It is a floating-point number with a default value of 100.0. The final value represents the value at the end of the animation or the last frame. Modifying this value will change the target value that the curve will reach by the end of the specified frames.

frame_counter

The frame counter is a shared type that tracks the progress of the animation in terms of frames. It is essential for calculating the intermediate values between the initial and final values. The frame counter ensures that the interpolation is spread evenly across the specified number of frames, providing a smooth transition.

Linear Curve [Dream] Output Parameters:

FLOAT

This output represents the interpolated value as a floating-point number. It provides the precise value at the current frame, calculated based on the initial value, final value, and the progress tracked by the frame counter. This output is useful for scenarios where exact values are required for further calculations or adjustments.

INT

This output represents the interpolated value rounded to the nearest integer. It provides a simplified version of the FLOAT output, which can be useful for scenarios where integer values are needed, such as indexing or discrete steps in an animation.

Linear Curve [Dream] Usage Tips:

• To create a smooth transition between two values, set the initial_value and final_value parameters to your desired start and end points.
• Use the frame_counter to control the duration of the transition. Ensure that the frame counter is properly configured to match the length of your animation.
• Experiment with different initial_value and final_value settings to achieve various effects, such as fading in or out, moving objects, or changing properties over time.

Linear Curve [Dream] Common Errors and Solutions:

"Frame counter not defined"

• Explanation: The frame counter parameter is missing or not properly configured.
• Solution: Ensure that the frame counter is correctly set up and passed to the node. Verify that it is tracking the progress of your animation as expected.

"Invalid initial or final value"

• Explanation: The initial or final value parameters are not valid floating-point numbers.
• Solution: Check that both initial_value and final_value are set to valid floating-point numbers. Avoid using non-numeric values or leaving the fields empty.

"Interpolation not smooth"

• Explanation: The transition between values is not smooth, possibly due to incorrect frame counter settings.
• Solution: Verify that the frame counter is correctly configured to match the duration of your animation. Ensure that the number of frames is sufficient to create a smooth transition.