donner::editor::RopeSimulationOptions Struct Reference

Tunable parameters for text-view reference rope simulation. More...

#include "donner/editor/RopeSimulation.h"

Public Attributes
int	segmentCount = 18
	Number of simulated rope segments.
int	constraintIterations = 7
	Distance-constraint solve iterations per frame.
double	gravityPxPerSec2 = 55.0
	Downward acceleration in screen pixels per second.
double	damping = 0.985
	Verlet velocity retained per 60 Hz simulation step.
double	scrollResponse = 0.35
	Extra inertia impulse from source-pane scrolling.
double	maxScrollImpulsePx = 4.0
	Maximum per-frame scroll impulse in screen pixels.
double	idleSwayPxPerSec2 = 18.0
	Low-speed horizontal idle sway acceleration.
double	idleSwayFrequencyHz = 0.45
	Idle sway frequency.
double	idleSwayMaxSpeed = 6.0
	Average substep particle motion under which sway applies.
double	maxDeltaTime = 1.0 / 60.0
	Largest fixed simulation substep.
double	settleTimeSeconds = 5.0
	Target damping window after a disturbance.
double	settleMotionThresholdPx = 0.01
	Average substep motion treated as still.
double	settleStillnessSeconds = 0.25
	Stillness duration required before sleeping.
double	settleRestDistanceThresholdPx = 0.5
	Max distance from rest shape before sleep.
double	overdueDamping = 0.45
	Velocity retained after missed settle target.
double	overdueDampingRampSeconds = 1.5
	Seconds to ramp into overdue damping.
double	catenaryRestoringForcePerSec2 = 540.0
	Restoring force toward catenary rest shape.
double	bezierTension = 1.0
	Quadratic Bézier smoothing tension in [0, 1].
double	catenarySlackRatio = 0.10
	Extra catenary length as a ratio of endpoint distance.
double	catenaryMinSlackPx = 18.0
	Minimum extra catenary length in screen pixels.
double	catenaryMaxSlackPx = 70.0
	Maximum extra catenary length in screen pixels.
double	initialImpulsePx = 0.2
	Subtle initial velocity displacement in screen pixels.
double	endpointFollow = 0.82
	Fraction of endpoint movement carried into the body.
double	endpointImpulse = 0.02
	Extra body velocity from endpoint movement.
double	maxEndpointImpulsePx = 1.0
	Clamp for per-frame endpoint-movement impulse.
double	endpointMotionVelocityRetention = 0.35
	Velocity retained after endpoints move.
double	endpointCatenaryBlend = 0.10
	Body blend toward new catenary rest shape.

Detailed Description

Tunable parameters for text-view reference rope simulation.

Member Data Documentation

bezierTension

double donner::editor::RopeSimulationOptions::bezierTension = 1.0

Quadratic Bézier smoothing tension in [0, 1].

catenaryMaxSlackPx

double donner::editor::RopeSimulationOptions::catenaryMaxSlackPx = 70.0

Maximum extra catenary length in screen pixels.

catenaryMinSlackPx

double donner::editor::RopeSimulationOptions::catenaryMinSlackPx = 18.0

Minimum extra catenary length in screen pixels.

catenaryRestoringForcePerSec2

double donner::editor::RopeSimulationOptions::catenaryRestoringForcePerSec2 = 540.0

Restoring force toward catenary rest shape.

catenarySlackRatio

double donner::editor::RopeSimulationOptions::catenarySlackRatio = 0.10

Extra catenary length as a ratio of endpoint distance.

constraintIterations

int donner::editor::RopeSimulationOptions::constraintIterations = 7

Distance-constraint solve iterations per frame.

damping

double donner::editor::RopeSimulationOptions::damping = 0.985

Verlet velocity retained per 60 Hz simulation step.

endpointCatenaryBlend

double donner::editor::RopeSimulationOptions::endpointCatenaryBlend = 0.10

Body blend toward new catenary rest shape.

endpointFollow

double donner::editor::RopeSimulationOptions::endpointFollow = 0.82

Fraction of endpoint movement carried into the body.

endpointImpulse

double donner::editor::RopeSimulationOptions::endpointImpulse = 0.02

Extra body velocity from endpoint movement.

endpointMotionVelocityRetention

double donner::editor::RopeSimulationOptions::endpointMotionVelocityRetention = 0.35

Velocity retained after endpoints move.

gravityPxPerSec2

double donner::editor::RopeSimulationOptions::gravityPxPerSec2 = 55.0

Downward acceleration in screen pixels per second.

idleSwayFrequencyHz

double donner::editor::RopeSimulationOptions::idleSwayFrequencyHz = 0.45

Idle sway frequency.

idleSwayMaxSpeed

double donner::editor::RopeSimulationOptions::idleSwayMaxSpeed = 6.0

Average substep particle motion under which sway applies.

idleSwayPxPerSec2

double donner::editor::RopeSimulationOptions::idleSwayPxPerSec2 = 18.0

Low-speed horizontal idle sway acceleration.

initialImpulsePx

double donner::editor::RopeSimulationOptions::initialImpulsePx = 0.2

Subtle initial velocity displacement in screen pixels.

maxDeltaTime

double donner::editor::RopeSimulationOptions::maxDeltaTime = 1.0 / 60.0

Largest fixed simulation substep.

maxEndpointImpulsePx

double donner::editor::RopeSimulationOptions::maxEndpointImpulsePx = 1.0

Clamp for per-frame endpoint-movement impulse.

maxScrollImpulsePx

double donner::editor::RopeSimulationOptions::maxScrollImpulsePx = 4.0

Maximum per-frame scroll impulse in screen pixels.

overdueDamping

double donner::editor::RopeSimulationOptions::overdueDamping = 0.45

Velocity retained after missed settle target.

overdueDampingRampSeconds

double donner::editor::RopeSimulationOptions::overdueDampingRampSeconds = 1.5

Seconds to ramp into overdue damping.

scrollResponse

double donner::editor::RopeSimulationOptions::scrollResponse = 0.35

Extra inertia impulse from source-pane scrolling.

segmentCount

int donner::editor::RopeSimulationOptions::segmentCount = 18

Number of simulated rope segments.

settleMotionThresholdPx

double donner::editor::RopeSimulationOptions::settleMotionThresholdPx = 0.01

Average substep motion treated as still.

settleRestDistanceThresholdPx

double donner::editor::RopeSimulationOptions::settleRestDistanceThresholdPx = 0.5

Max distance from rest shape before sleep.

settleStillnessSeconds

double donner::editor::RopeSimulationOptions::settleStillnessSeconds = 0.25

Stillness duration required before sleeping.

settleTimeSeconds

double donner::editor::RopeSimulationOptions::settleTimeSeconds = 5.0

Target damping window after a disturbance.

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

• donner/editor/RopeSimulation.h