math/mat4.h

#include <modkit/math/mat4.h>21 functions

Matrix operations (thin wrappers around cglm).

Functions

mk_mat4_copyfunction

void mk_mat4_copy(const mk_mat4 *src, mk_mat4 *dest)

Copy matrix: dest = src.

Parameter	Type	Description
src	const mk_mat4 *	Value for src.
dest	mk_mat4 *	Value for dest.

mk_mat4_from_quatfunction

void mk_mat4_from_quat(mk_mat4 *dest, const mk_quat *q)

Convert quaternion to rotation matrix.

Parameter	Type	Description
dest	mk_mat4 *	Value for dest.
q	const mk_quat *	Value for q.

mk_mat4_get_translationfunction

void mk_mat4_get_translation(const mk_mat4 *m, mk_vec3 *dest)

Extract translation from matrix.

Parameter	Type	Description
m	const mk_mat4 *	Value for m.
dest	mk_vec3 *	Value for dest.

mk_mat4_identityfunction

void mk_mat4_identity(mk_mat4 *dest)

Set matrix to identity.

Parameter	Type	Description
dest	mk_mat4 *	Value for dest.

mk_mat4_invfunction

void mk_mat4_inv(const mk_mat4 *src, mk_mat4 *dest)

Invert matrix: dest = inverse(src).

Parameter	Type	Description
src	const mk_mat4 *	Value for src.
dest	mk_mat4 *	Value for dest.

mk_mat4_mulfunction

void mk_mat4_mul(const mk_mat4 *a, const mk_mat4 *b, mk_mat4 *dest)

Multiply matrices: dest = a * b.

Parameter	Type	Description
a	const mk_mat4 *	Value for a.
b	const mk_mat4 *	Value for b.
dest	mk_mat4 *	Value for dest.

mk_mat4_mulv3function

void mk_mat4_mulv3(const mk_mat4 *m, const mk_vec3 *v, mk_vec3 *dest)

Transform vec3 by mat4 (assumes w=1, perspective divide applied).

Parameter	Type	Description
m	const mk_mat4 *	Value for m.
v	const mk_vec3 *	Value for v.
dest	mk_vec3 *	Value for dest.

mk_mat4_mulv4function

void mk_mat4_mulv4(const mk_mat4 *m, const mk_vec4 *v, mk_vec4 *dest)

Transform vec4 by mat4.

Parameter	Type	Description
m	const mk_mat4 *	Value for m.
v	const mk_vec4 *	Value for v.
dest	mk_vec4 *	Value for dest.

mk_mat4_rotatefunction

void mk_mat4_rotate(mk_mat4 *m, float angle, const mk_vec3 *axis)

Apply rotation to matrix: m = m * R(angle, axis).

Parameter	Type	Description
m	mk_mat4 *	Value for m.
angle	float	Value for angle.
axis	const mk_vec3 *	Value for axis.

mk_mat4_rotate_makefunction

void mk_mat4_rotate_make(mk_mat4 *dest, float angle, const mk_vec3 *axis)

Create rotation matrix from axis-angle (angle in radians).

Parameter	Type	Description
dest	mk_mat4 *	Value for dest.
angle	float	Value for angle.
axis	const mk_vec3 *	Value for axis.

mk_mat4_rotate_xfunction

void mk_mat4_rotate_x(const mk_mat4 *m, float angle, mk_mat4 *dest)

Rotate around X axis: dest = m * Rx(angle).

Parameter	Type	Description
m	const mk_mat4 *	Value for m.
angle	float	Value for angle.
dest	mk_mat4 *	Value for dest.

mk_mat4_rotate_yfunction

void mk_mat4_rotate_y(const mk_mat4 *m, float angle, mk_mat4 *dest)

Rotate around Y axis: dest = m * Ry(angle).

Parameter	Type	Description
m	const mk_mat4 *	Value for m.
angle	float	Value for angle.
dest	mk_mat4 *	Value for dest.

mk_mat4_rotate_zfunction

void mk_mat4_rotate_z(const mk_mat4 *m, float angle, mk_mat4 *dest)

Rotate around Z axis: dest = m * Rz(angle).

Parameter	Type	Description
m	const mk_mat4 *	Value for m.
angle	float	Value for angle.
dest	mk_mat4 *	Value for dest.

mk_mat4_scalefunction

void mk_mat4_scale(mk_mat4 *m, const mk_vec3 *v)

Apply scale to matrix: m = m * S(v).

Parameter	Type	Description
m	mk_mat4 *	Value for m.
v	const mk_vec3 *	Value for v.

mk_mat4_scale_makefunction

void mk_mat4_scale_make(mk_mat4 *dest, const mk_vec3 *v)

Create scale matrix.

Parameter	Type	Description
dest	mk_mat4 *	Value for dest.
v	const mk_vec3 *	Value for v.

mk_mat4_scale_unifunction

void mk_mat4_scale_uni(mk_mat4 *m, float s)

Apply uniform scale to matrix: m = m * S(s,s,s).

Parameter	Type	Description
m	mk_mat4 *	Value for m.
s	float	Value for s.

mk_mat4_scale_uni_makefunction

void mk_mat4_scale_uni_make(mk_mat4 *dest, float s)

Create uniform scale matrix.

Parameter	Type	Description
dest	mk_mat4 *	Value for dest.
s	float	Value for s.

mk_mat4_set_translationfunction

void mk_mat4_set_translation(mk_mat4 *m, const mk_vec3 *v)

Set translation in matrix.

Parameter	Type	Description
m	mk_mat4 *	Value for m.
v	const mk_vec3 *	Value for v.

mk_mat4_translatefunction

void mk_mat4_translate(mk_mat4 *m, const mk_vec3 *v)

Apply translation to matrix: m = m * T(v).

Parameter	Type	Description
m	mk_mat4 *	Value for m.
v	const mk_vec3 *	Value for v.

mk_mat4_translate_makefunction

void mk_mat4_translate_make(mk_mat4 *dest, const mk_vec3 *v)

Create translation matrix.

Parameter	Type	Description
dest	mk_mat4 *	Value for dest.
v	const mk_vec3 *	Value for v.

mk_mat4_transposefunction

void mk_mat4_transpose(const mk_mat4 *src, mk_mat4 *dest)

Transpose matrix: dest = transpose(src).

Parameter	Type	Description
src	const mk_mat4 *	Value for src.
dest	mk_mat4 *	Value for dest.