Axis Angle

Provides a helper structure for conversion to quaternions.

#include <graphics/axisang.h>

struct axisang

float axisang.x

X axis

float axisang.y

Y axis

float axisang.z

Z axis

float axisang.w

Angle

float axisang.ptr[4]

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void axisang_zero(struct axisang *dst)

Zeroes the axis angle.

Parameters:

• dst – Axis angle

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void axisang_copy(struct axisang *dst, struct axisang *aa)

Copies an axis angle.

Parameters:

• dst – Axis angle to copy to

• aa – Axis angle to copy from

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void axisang_set(struct axisang *dst, float x, float y, float z, float w)

Sets an axis angle.

Parameters:

• dst – Axis angle to set

• x – X axis

• y – Y axis

• z – Z axis

• w – Angle

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void axisang_from_quat(struct axisang *dst, const struct quat *q)

Creates an axis angle from a quaternion.

Parameters:

• dst – Axis angle destination

• q – Quaternion to convert