PhosphorAnimation::CurveState Struct Reference

Mutable state for stateful curve progression (springs carry position+velocity across frames; stateless curves share the struct for uniform caller treatment). More...

#include <phosphor-animation/include/PhosphorAnimation/Curve.h>

Public Attributes
qreal	value = 0.0
qreal	velocity = 0.0
qreal	time = 0.0
qreal	startValue = 0.0
	Start of current segment — stateless step() lerps from here to target.
qreal	duration = 1.0
	Segment duration in seconds. Stateful curves ignore this.

Detailed Description

Mutable state for stateful curve progression (springs carry position+velocity across frames; stateless curves share the struct for uniform caller treatment).

All time fields are in real seconds.

Member Data Documentation

duration

qreal PhosphorAnimation::CurveState::duration = 1.0

Segment duration in seconds. Stateful curves ignore this.

startValue

qreal PhosphorAnimation::CurveState::startValue = 0.0

Start of current segment — stateless step() lerps from here to target.

For retarget: set startValue = value, time = 0, then pass new target. Stateful curves (Spring) ignore this; they derive continuity from value/velocity.

time

qreal PhosphorAnimation::CurveState::time = 0.0

value

qreal PhosphorAnimation::CurveState::value = 0.0

velocity

qreal PhosphorAnimation::CurveState::velocity = 0.0

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The documentation for this struct was generated from the following file:

• phosphor-animation/include/PhosphorAnimation/Curve.h