math_util.c File Reference

#include <ultra64.h>
#include <mk64.h>
#include <macros.h>
#include <math_util.h>
#include <main.h>
#include "buffers.h"
#include <PR/rcp.h>
#include "buffers/trig_tables.h"
#include "math.h"
#include "memory.h"

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Functions
UNUSED s32	func_802B4F60 (UNUSED s32 arg0, Vec3f arg1, UNUSED s32 arg2, UNUSED f32 arg3, UNUSED f32 arg4)
UNUSED void	func_802B4FF0 ()
s32	render_set_position (Mat4 mtx, s32 mode)
f32	dist_squared_bugged (Vec3f from, Vec3f to)
s32	get_xz_angle_between_points (Vec3f pointFrom, Vec3f pointTo)
UNUSED u32	func_802B5258 (Vec3f arg0, Vec3s arg1)
void	vec3f_set (Vec3f dest, f32 coordX, f32 coordY, f32 coordZ)
void	vec3s_set (Vec3s dest, s16 coordX, s16 coordY, s16 coordZ)
void *	vec3f_copy_return (Vec3f dest, Vec3f src)
void	vec3s_copy (Vec3s dest, Vec3s src)
UNUSED void *	vec3f_set_return (Vec3f dest, f32 x, f32 y, f32 z)
void	mtxf_copy (Mat4 src, Mat4 dest)
void	mtxf_copy_n_element (s32 *dest, s32 *src, s32 n)
void	mtxf_identity (Mat4 mtx)
void	add_translate_mat4_vec3f (Mat4 src, Mat4 dest, Vec3f translate)
UNUSED void	add_translate_mat4_vec3f_lite (Mat4 mat, Mat4 dest, Vec3f pos)
void	mtxf_translate (Mat4 dest, Vec3f translate)
void	mtxf_projection (Mat4 projMtx, u16 *arg1, f32 vertFov, f32 aspectRatio, f32 near, f32 far, f32 homogeneousScale)
void	mtxf_lookat (Mat4 mtx, Vec3f from, Vec3f to)
	Create a lookat matrix (convert to coordinates relative to camera)
void	mtxf_rotate_x (Mat4 mtx, s16 angle)
void	mtxf_rotate_y (Mat4 mtx, s16 angle)
void	mtxf_s16_rotate_z (Mat4 mtx, s16 angle)
UNUSED void	func_802B5B14 (Vec3f b, Vec3s rotate)
void	vec_unit_z_rotX_rotY (s16 rotY, s16 rotX, Vec3f arg2)
UNUSED void	func_802B5D30 (s16 arg0, s16 arg1, s32 arg2)
void	set_course_lighting (Lights1 *lightAddr, s16 rotateAngleY, s16 rotateAngleX, s32 lightCount)
void	mtxf_scale (Mat4 mtx, f32 coef)
void	mtxf_rotate_zxy_translate (Mat4 dest, Vec3f translate, Vec3s orientation)
UNUSED void	func_802B60B4 (Mat4 arg0, Vec3s arg1, Vec3s arg2)
UNUSED void	func_802B6214 (Mat4 arg0, Vec3s arg1, Vec3s arg2)
UNUSED void	func_802B6374 (Vec3f arg0)
void	mtxf_transform_vec3f_mat3 (Vec3f vec, Mat3 mtx)
void	mtxf_transform_vec3f_mat4 (Vec3f vec, Mat4 mat)
UNUSED void	func_802B64B0 (UNUSED s32 arg0, UNUSED s32 arg1, UNUSED s32 arg2, UNUSED s32 arg3)
void	vec3f_rotate_y (Vec3f vec, s16 rotAngleY)
void	calculate_orientation_matrix (Mat3 dest, f32 axisZ, f32 cosAxisY, f32 axisX, s16 rotationAngle)
UNUSED void	func_802B68F8 (Mat3 matrix, f32 arg1, f32 arg2, f32 arg3)
void	calculate_rotation_matrix (Mat3 destMatrix, s16 rotationAngle, f32 axisX, f32 axisY, f32 axisZ)
UNUSED void	func_802B6BC0 (Mat4 arg0, s16 arg1, f32 arg2, f32 arg3, f32 arg4)
UNUSED void	func_802B6D58 (Mat4 arg0, Vec3f arg1, Vec3f arg2)
void	mtxf_multiplication (Mat4 dest, Mat4 mtxLeft, Mat4 mtxRight)
	Multiply two 4x4 matrices.
void	mtxf_to_mtx (Mtx *dest, Mat4 src)
u16	atan2_lookup (f32 y, f32 x)
u16	atan2s (f32 y, f32 x)
f32	atan2f (f32 y, f32 x)
UNUSED f32	func_802B79F0 (f32 arg0, f32 arg1)
UNUSED u16	func_802B7B50 (f32 arg0, f32 arg1)
UNUSED void	func_802B7C18 (f32 arg0)
s16	atan1s (f32 tan)
UNUSED void	func_802B7C6C (f32 arg0)
s16	asin1s (f32 value)
f32	acos1f (f32 value)
UNUSED s16	func_802B7D28 (f32 arg0)
u16	random_u16 (void)
u16	random_int (u16 arg0)
s16	get_angle_between_coords (f32 fromY, f32 fromX, f32 toY, f32 toX)
void	planar_angles (Vec3f from, Vec3f to, Vec3s rotAngles)
f32	sins (u16 angle)
f32	coss (u16 angle)
s32	is_between_angle (u16 angleCCW, u16 angleCW, u16 angleToCheck)
f32	distance_if_visible (Vec3f cameraPos, Vec3f objectPos, u16 orientationY, f32 preloadDistanceSquared, f32 fovDegrees, f32 maxDistanceSquared)
UNUSED void	func_802B8414 (uintptr_t addr, Mat4 arg1, s16 arg2, s16 arg3, s32 arg4)
UNUSED void	func_802B8614 (Player *arg0)

Variables
UNUSED s32	D_802B91C0 [2] = { 13, 13 }
Vec3f	D_802B91C8 = { 0.0f, 0.0f, 0.0f }

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()

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

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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func_802B4F60()

UNUSED s32 func_802B4F60	(	UNUSED s32	arg0,
		Vec3f	arg1,
		UNUSED s32	arg2,
		UNUSED f32	arg3,
		UNUSED f32	arg4 )

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func_802B4FF0()

UNUSED void func_802B4FF0

(

)

func_802B5258()

UNUSED u32 func_802B5258	(	Vec3f	arg0,
		Vec3s	arg1 )

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func_802B5B14()

UNUSED void func_802B5B14	(	Vec3f	b,
		Vec3s	rotate )

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func_802B5D30()

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

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func_802B60B4()

UNUSED void func_802B60B4	(	Mat4	arg0,
		Vec3s	arg1,
		Vec3s	arg2 )

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func_802B6214()

UNUSED void func_802B6214	(	Mat4	arg0,
		Vec3s	arg1,
		Vec3s	arg2 )

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func_802B6374()

UNUSED void func_802B6374

(

Vec3f

arg0

)

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func_802B64B0()

UNUSED void func_802B64B0	(	UNUSED s32	arg0,
		UNUSED s32	arg1,
		UNUSED s32	arg2,
		UNUSED s32	arg3 )

func_802B68F8()

UNUSED void func_802B68F8	(	Mat3	matrix,
		f32	arg1,
		f32	arg2,
		f32	arg3 )

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func_802B6BC0()

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

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func_802B6D58()

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

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func_802B79F0()

UNUSED f32 func_802B79F0	(	f32	arg0,
		f32	arg1 )

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func_802B7B50()

UNUSED u16 func_802B7B50	(	f32	arg0,
		f32	arg1 )

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func_802B7C18()

UNUSED void func_802B7C18

(

f32

arg0

)

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func_802B7C6C()

UNUSED void func_802B7C6C

(

f32

arg0

)

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func_802B7D28()

UNUSED s16 func_802B7D28

(

f32

arg0

)

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func_802B8414()

UNUSED void func_802B8414	(	uintptr_t	addr,
		Mat4	arg1,
		s16	arg2,
		s16	arg3,
		s32	arg4 )

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func_802B8614()

UNUSED void func_802B8614

(

Player *

arg0

)

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get_angle_between_coords()

s16 get_angle_between_coords	(	f32	fromY,
		f32	fromX,
		f32	toY,
		f32	toX )

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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()

UNUSED 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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vec_unit_z_rotX_rotY()

void vec_unit_z_rotX_rotY	(	s16	rotY,
		s16	rotX,
		Vec3f	arg2 )

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Variable Documentation

D_802B91C0

UNUSED s32 D_802B91C0[2] = { 13, 13 }

D_802B91C8

Vec3f D_802B91C8 = { 0.0f, 0.0f, 0.0f }