ComfyUI Node: Evaluate Curve At T

Evaluate Curve At T:

The KfEvaluateCurveAtT node is designed to evaluate a keyframed curve at a specific point in time, providing both the floating-point and integer values of the curve at that point. This node is particularly useful for AI artists who need to extract precise values from a curve for further processing or decision-making in their creative workflows. By using this node, you can easily retrieve the value of a curve at any given time, allowing for dynamic adjustments and fine-tuning of animations or other time-based effects.

Evaluate Curve At T Input Parameters:

curve

The curve parameter represents the keyframed curve that you want to evaluate. This input is mandatory and must be provided for the node to function. The curve is expected to be of type KEYFRAMED_CURVE, which is a data structure that holds the keyframes and their corresponding values. The curve parameter allows the node to access the specific values at different points in time, enabling precise evaluation.

t

The t parameter specifies the point in time at which the curve should be evaluated. This input is an integer and has a default value of 0. By adjusting the t parameter, you can control the exact moment on the curve that you want to evaluate, making it possible to retrieve values at different stages of your animation or effect.

Evaluate Curve At T Output Parameters:

FLOAT

The FLOAT output provides the floating-point value of the curve at the specified time t. This value represents the precise value of the curve at that moment, allowing for smooth and accurate adjustments in your creative projects.

INT

The INT output provides the integer value of the curve at the specified time t. This value is derived by converting the floating-point value to an integer, which can be useful for scenarios where whole numbers are required or preferred.

Evaluate Curve At T Usage Tips:

• Use the t parameter to dynamically evaluate the curve at different points in time, enabling real-time adjustments and fine-tuning of your animations or effects.
• Combine this node with other nodes that manipulate or generate keyframed curves to create complex and dynamic behaviors in your projects.

Evaluate Curve At T Common Errors and Solutions:

"IndexError: list index out of range"

• Explanation: This error occurs when the specified time t is outside the range of the keyframed curve.
• Solution: Ensure that the t parameter is within the valid range of the curve's keyframes. Check the length of the curve and adjust t accordingly.

"TypeError: 'NoneType' object is not subscriptable"

• Explanation: This error occurs when the curve parameter is not properly provided or is None.
• Solution: Make sure that the curve parameter is correctly connected and is of type KEYFRAMED_CURVE. Verify that the curve data is valid and not None.