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> Unreal Engine API Reference > Runtime > Chaos > Chaos > FMassMatrix

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FMassMatrix

A block-diagonal matrix specifically for use with Mass/Inertia (or more usually inverse mass and inertia) and [TDenseMatrix](API\Runtime\Chaos\Chaos\TDenseMatrix) math used by the constraint solvers.

Windows

MacOS

Linux

References

Module	Chaos
Header	/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/DenseMatrix.h
Include	#include "Chaos/DenseMatrix.h"

Syntax

class FMassMatrix

Remarks

A block-diagonal matrix specifically for use with Mass/Inertia (or more usually inverse mass and inertia) and TDenseMatrix math used by the constraint solvers.

Constructors

No constructors are accessible with public or protected access.

Functions

		Name	Description
	const FReal ...	I ( int32 RowIndex, int32 ColIndex )
	FReal	M()
	FMassMatrix	Make ( const FReal InM, const FMatrix33& InI )
	FMassMatrix	Make ( const FReal InM, FMatrix33&& InI )
	FMassMatrix	Make ( const FReal InM, const FRotation3& Q, const FMatrix33& InI )

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