Varjo_math.h File Reference

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Functions
struct varjo_Vector3D	varjo_GetEulerAngles (struct varjo_Matrix *matrix, varjo_EulerOrder order, varjo_RotationDirection direction, varjo_Handedness handedness)
	Extracts the euler angles in radians from the given matrix. More...
struct varjo_Vector3D	varjo_GetPosition (struct varjo_Matrix *matrix)
	Gets the translation part from a transformation matrix. More...
static void	varjo_UpdateNearFarPlanes (double *projectionMatrix, varjo_ClipRange clipRange, double nearZ, double farZ)
	Updates the near and far clip plane distances in the projection matrix. More...
static struct varjo_Matrix	varjo_GetProjectionMatrix (struct varjo_FovTangents *tangents)
	Creates a projection matrix from given FOV tangents. More...

Function Documentation

varjo_GetEulerAngles()

struct varjo_Vector3D varjo_GetEulerAngles	(	struct varjo_Matrix *	matrix,
		varjo_EulerOrder	order,
		varjo_RotationDirection	direction,
		varjo_Handedness	handedness
	)

Extracts the euler angles in radians from the given matrix.

Default convention is right handed counter clockwise rotation, where X-axis is negative and Y and Z axes are positive.

Rotations are global, to get local rotations flip the axes. Eg: Global rotation XYZ -> local rotation ZYX.

Parameters

matrix	Matrix to extract the angles from.
order	Euler axis order.
direction	Rotation direction.
handedness	Rotation Handedness.

varjo_GetPosition()

struct varjo_Vector3D varjo_GetPosition

(

struct varjo_Matrix *

matrix

)

Gets the translation part from a transformation matrix.

Parameters

matrix

Matrix to extract the translation from.

varjo_GetProjectionMatrix()

static struct varjo_Matrix varjo_GetProjectionMatrix ( struct varjo_FovTangents *  tangents )

static

Creates a projection matrix from given FOV tangents.

Parameters

tangents

Tangents for a view.

Returns

projection Projection matrix with default depth transform.

See also

varjo_UpdateNearFarPlanes() To update the depth transform in the projection matrix.

varjo_UpdateNearFarPlanes()

static void varjo_UpdateNearFarPlanes ( double *  projectionMatrix, varjo_ClipRange  clipRange, double  nearZ, double  farZ  )

static

Updates the near and far clip plane distances in the projection matrix.

Parameters

projectionMatrix	Projection matrix to modify.
clipRange	Clip space range (0..1 or -1..1).
nearZ	Positive distance in meters to the near plane. To indicate depth values reversed, can be greater than farZ.
farZ	Positive distance in meters to the far plane. To indicate depth values reversed, can be smaller than nearZ.