Curves

The Curves namespace (GS_Core::Curves) provides 40+ easing functions for smooth animation and interpolation. All functions take a normalized t value in [0,1] and return a remapped [0,1] value. The dispatch function EvaluateCurve routes to the correct function by CurveType enum value, making curve selection fully data-driven from the Inspector or asset editor.

Used by every GS_Motion track, all gradient evaluate calls, and the blend profile system.

For usage guides and setup examples, see The Basics: GS_Core.

Contents

• Curve Families
• API Reference
• Usage Examples
• See Also

Curve Families

Variant naming: EaseIn = slow start, EaseOut = slow end, EaseInOut = slow start and end.

API Reference

Dispatch Function

float EvaluateCurve(CurveType curveType, float t);

Dispatches to the correct curve function based on the CurveType enum value. This is the primary call site for all motion and gradient systems. t must be in [0,1].

Individual Functions

One free function per CurveType value, all sharing the signature float <Name>(float t). Examples:

All functions follow the same naming pattern as the CurveType enum values.

Usage Examples

Dispatch via enum (data-driven)

#include <GS_Core/Utility/Math/CurvesUtility.h>

// Evaluate at normalized progress t (0 → 1)
float eased = GS_Core::Curves::EvaluateCurve(GS_Core::CurveType::EaseInOutCubic, t);

// Interpolate between two values
float result = start + (end - start) * GS_Core::Curves::EvaluateCurve(curveType, t);

Direct function call

// Call the function directly for a known curve
float eased = GS_Core::Curves::EaseOutBack(t);

See Also

For related resources:

• Common Enums — CurveType enum for data-driven curve selection
• Springs Utility
• Gradients
• Core Utilities

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