math_util.h File Reference

#include <PR/ultratypes.h>

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Macros
#define	sqr(x)   ((x) * (x))

Functions
double	fabs (double x)
void	func_802B5794 (Mat4, Vec3f, Vec3f)
s32	func_802B4F60 (s32, Vec3f, s32, f32, f32)
s32	render_set_position (Mat4, s32)
f32	dist_squared_bugged (Vec3f, Vec3f)
s32	get_xz_angle_between_points (Vec3f, Vec3f)
u32	func_802B5258 (Vec3f, Vec3s)
void	vec3f_set (Vec3f, f32, f32, f32)
void	vec3s_set (Vec3s, s16, s16, s16)
void *	vec3f_copy_return (Vec3f, Vec3f)
void	vec3s_copy (Vec3s, Vec3s)
void *	vec3f_set_return (Vec3f, f32, f32, f32)
void	mtxf_copy (Mat4, Mat4)
void	mtxf_copy_n_element (s32 *, s32 *, s32)
void	mtxf_identity (Mat4)
void	add_translate_mat4_vec3f (Mat4, Mat4, Vec3f)
void	add_translate_mat4_vec3f_lite (Mat4, Mat4, Vec3f)
void	mtxf_translate (Mat4, Vec3f)
void	mtxf_projection (Mat4, u16 *, f32, f32, f32, f32, f32)
void	mtxf_lookat (Mat4, Vec3f, Vec3f)
	Create a lookat matrix (convert to coordinates relative to camera)
void	mtxf_rotate_x (Mat4, s16)
void	mtxf_rotate_y (Mat4, s16)
void	mtxf_s16_rotate_z (Mat4, s16)
void	func_802B5B14 (Vec3f b, Vec3s rotate)
void	func_802B5CAC (s16, s16, Vec3f)
void	func_802B5D30 (s16, s16, s32)
void	set_course_lighting (Lights1 *, s16, s16, s32)
void	mtxf_scale (Mat4, f32)
void	mtxf_rotate_zxy_translate (Mat4, Vec3f, Vec3s)
void	mtxf_transform_vec3f_mat3 (Vec3f, Mat3)
void	mtxf_transform_vec3f_mat4 (Vec3f, Mat4)
void	vec3f_rotate_y (Vec3f, s16)
void	calculate_orientation_matrix (Mat3, f32, f32, f32, s16)
void	calculate_rotation_matrix (Mat3, s16, f32, f32, f32)
void	func_802B6BC0 (Mat4, s16, f32, f32, f32)
void	func_802B6D58 (Mat4, Vec3f, Vec3f)
void	mtxf_multiplication (Mat4, Mat4, Mat4)
	Multiply two 4x4 matrices.
void	mtxf_to_mtx (Mtx *, Mat4)
u16	atan2_lookup (f32, f32)
u16	atan2s (f32, f32)
f32	atan2f (f32, f32)
s16	atan1s (f32)
s16	asin1s (f32)
f32	acos1f (f32)
u16	random_u16 (void)
u16	random_int (u16)
s16	angle_from_coords (f32, f32, f32, f32)
void	planar_angles (Vec3f, Vec3f, Vec3s)
f32	sins (u16)
f32	coss (u16)
s32	is_between_angle (u16, u16, u16)
f32	distance_if_visible (Vec3f, Vec3f, u16, f32, f32, f32)

Variables
s32	D_802B91C0 []
Vec3f	D_802B91C8

Macro Definition Documentation

sqr

#define sqr

(

x

)

((x) * (x))

Function Documentation

acos1f()

f32 acos1f

(

f32

value

)

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add_translate_mat4_vec3f()

void add_translate_mat4_vec3f	(	Mat4	src,
		Mat4	dest,
		Vec3f	translate )

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add_translate_mat4_vec3f_lite()

void add_translate_mat4_vec3f_lite	(	Mat4	mat,
		Mat4	dest,
		Vec3f	pos )

angle_from_coords()

s16 angle_from_coords	(	f32	,
		f32	,
		f32	,
		f32	)

asin1s()

s16 asin1s

(

f32

value

)

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atan1s()

s16 atan1s

(

f32

tan

)

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atan2_lookup()

u16 atan2_lookup	(	f32	y,
		f32	x )

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atan2f()

f32 atan2f	(	f32	y,
		f32	x )

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atan2s()

u16 atan2s	(	f32	y,
		f32	x )

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calculate_orientation_matrix()

void calculate_orientation_matrix	(	Mat3	dest,
		f32	axisZ,
		f32	cosAxisY,
		f32	axisX,
		s16	rotationAngle )

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calculate_rotation_matrix()

void calculate_rotation_matrix	(	Mat3	destMatrix,
		s16	rotationAngle,
		f32	axisX,
		f32	axisY,
		f32	axisZ )

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coss()

f32 coss

(

u16

angle

)

dist_squared_bugged()

f32 dist_squared_bugged	(	Vec3f	from,
		Vec3f	to )

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distance_if_visible()

f32 distance_if_visible	(	Vec3f	cameraPos,
		Vec3f	objectPos,
		u16	orientationY,
		f32	preloadDistanceSquared,
		f32	fovDegrees,
		f32	maxDistanceSquared )

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fabs()

double fabs

(

double

x

)

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func_802B4F60()

s32 func_802B4F60	(	s32	,
		Vec3f	,
		s32	,
		f32	,
		f32	)

func_802B5258()

u32 func_802B5258	(	Vec3f	arg0,
		Vec3s	arg1 )

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func_802B5794()

void func_802B5794	(	Mat4	,
		Vec3f	,
		Vec3f	)

func_802B5B14()

void func_802B5B14	(	Vec3f	b,
		Vec3s	rotate )

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func_802B5CAC()

void func_802B5CAC	(	s16	,
		s16	,
		Vec3f	)

func_802B5D30()

void func_802B5D30	(	s16	arg0,
		s16	arg1,
		s32	arg2 )

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func_802B6BC0()

void func_802B6BC0	(	Mat4	arg0,
		s16	arg1,
		f32	arg2,
		f32	arg3,
		f32	arg4 )

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func_802B6D58()

void func_802B6D58	(	Mat4	arg0,
		Vec3f	arg1,
		Vec3f	arg2 )

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get_xz_angle_between_points()

s32 get_xz_angle_between_points	(	Vec3f	pointFrom,
		Vec3f	pointTo )

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is_between_angle()

s32 is_between_angle	(	u16	angleCCW,
		u16	angleCW,
		u16	angleToCheck )

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mtxf_copy()

void mtxf_copy	(	Mat4	src,
		Mat4	dest )

mtxf_copy_n_element()

void mtxf_copy_n_element	(	s32 *	dest,
		s32 *	src,
		s32	n )

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mtxf_identity()

void mtxf_identity

(

Mat4

mtx

)

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mtxf_lookat()

void mtxf_lookat	(	Mat4	mtx,
		Vec3f	from,
		Vec3f	to )

Create a lookat matrix (convert to coordinates relative to camera)

Parameters

mtx	Dummy matrix overwritten with lookat matrix
from	Where the camera is looking from
to	Where the camera is looking to

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mtxf_multiplication()

void mtxf_multiplication	(	Mat4	dest,
		Mat4	mtxLeft,
		Mat4	mtxRight )

Multiply two 4x4 matrices.

Parameters

dest	Result of multiplication is saved here
mtxLeft	Left matrix in product
mtxRight	Right matrix to product

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mtxf_projection()

void mtxf_projection	(	Mat4	projMtx,
		u16 *	arg1,
		f32	vertFov,
		f32	aspectRatio,
		f32	near,
		f32	far,
		f32	homogeneousScale )

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mtxf_rotate_x()

void mtxf_rotate_x	(	Mat4	mtx,
		s16	angle )

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mtxf_rotate_y()

void mtxf_rotate_y	(	Mat4	mtx,
		s16	angle )

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mtxf_rotate_zxy_translate()

void mtxf_rotate_zxy_translate	(	Mat4	dest,
		Vec3f	translate,
		Vec3s	orientation )

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mtxf_s16_rotate_z()

void mtxf_s16_rotate_z	(	Mat4	mtx,
		s16	angle )

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mtxf_scale()

void mtxf_scale	(	Mat4	mtx,
		f32	coef )

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mtxf_to_mtx()

void mtxf_to_mtx	(	Mtx *	dest,
		Mat4	src )

Convert float matrix 'src' to fixed point matrix 'dest'. The float matrix may not contain entries larger than 65536 or the console crashes. The fixed point matrix has entries with a 16-bit integer part, so the floating point numbers are multiplied by 2^16 before being cast to a s32 integer. If this doesn't fit, the N64 and iQue consoles will throw an exception. On Wii and Wii U Virtual Console the value will simply be clamped and no crashes occur.

float-to-integer conversion responsible for PU crashes

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mtxf_transform_vec3f_mat3()

void mtxf_transform_vec3f_mat3	(	Vec3f	vec,
		Mat3	mtx )

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mtxf_transform_vec3f_mat4()

void mtxf_transform_vec3f_mat4	(	Vec3f	vec,
		Mat4	mat )

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mtxf_translate()

void mtxf_translate	(	Mat4	dest,
		Vec3f	translate )

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planar_angles()

void planar_angles	(	Vec3f	from,
		Vec3f	to,
		Vec3s	rotAngles )

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random_int()

u16 random_int

(

u16

arg0

)

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random_u16()

u16 random_u16

(

void

)

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render_set_position()

s32 render_set_position	(	Mat4	mtx,
		s32	mode )

Inserts matrix into the rsp. Position, rotation and mode of where to render the next object and check number of object already render Note that gMatrixObjectCount gets reset at the beginning of the game loop. So no cleanup needs to be performed.

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set_course_lighting()

void set_course_lighting	(	Lights1 *	lightAddr,
		s16	rotateAngleY,
		s16	rotateAngleX,
		s32	lightCount )

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sins()

f32 sins

(

u16

angle

)

vec3f_copy_return()

void * vec3f_copy_return	(	Vec3f	dest,
		Vec3f	src )

Warning

function returns address of local variable

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vec3f_rotate_y()

void vec3f_rotate_y	(	Vec3f	vec,
		s16	rotAngleY )

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vec3f_set()

void vec3f_set	(	Vec3f	dest,
		f32	coordX,
		f32	coordY,
		f32	coordZ )

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vec3f_set_return()

void * vec3f_set_return	(	Vec3f	dest,
		f32	x,
		f32	y,
		f32	z )

vec3s_copy()

void vec3s_copy	(	Vec3s	dest,
		Vec3s	src )

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vec3s_set()

void vec3s_set	(	Vec3s	dest,
		s16	coordX,
		s16	coordY,
		s16	coordZ )

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Variable Documentation

D_802B91C0

s32 D_802B91C0[]

extern

D_802B91C8

Vec3f D_802B91C8

extern