forked from ioquake/ioq3
/
q_math.rs
1608 lines (1491 loc) · 52.7 KB
/
q_math.rs
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use ::libc;
pub mod q_shared_h {
//=============================================
//int COM_ParseInfos( char *buf, int max, char infos[][MAX_INFO_STRING] );
//token types
// string
// literal
// number
// name
// punctuation
// data is an in/out parm, returns a parsed out token
// mode parm for FS_FOpenFile
//=============================================
// portable case insensitive compare
// buffer size safe library replacements
// strlen that discounts Quake color sequences
// removes color sequences from string
// Count the number of char tocount encountered in string
//=============================================
// 64-bit integers for global rankings interface
// implemented as a struct for qvm compatibility
//=============================================
/*
short BigShort(short l);
short LittleShort(short l);
int BigLong (int l);
int LittleLong (int l);
qint64 BigLong64 (qint64 l);
qint64 LittleLong64 (qint64 l);
float BigFloat (const float *l);
float LittleFloat (const float *l);
void Swap_Init (void);
*/
//=============================================
//
// key / value info strings
//
// this is only here so the functions in q_shared.c and bg_*.c can link
/*
==========================================================
CVARS (console variables)
Many variables can be used for cheating purposes, so when
cheats is zero, force all unspecified variables to their
default values.
==========================================================
*/
// set to cause it to be saved to vars.rc
// used for system variables, not for player
// specific configurations
// sent to server on connect or change
// sent in response to front end requests
// these cvars will be duplicated on all clients
// don't allow change from console at all,
// but can be set from the command line
// will only change when C code next does
// a Cvar_Get(), so it can't be changed
// without proper initialization. modified
// will be set, even though the value hasn't
// changed yet
// display only, cannot be set by user at all
// created by a set command
// can be set even when cheats are disabled, but is not archived
// can not be changed if cheats are disabled
// do not clear when a cvar_restart is issued
// cvar was created by a server the client connected to.
// cvar was created exclusively in one of the VMs.
// prevent modifying this var from VMs or the server
// These flags are only returned by the Cvar_Flags() function
// Cvar was modified
// Cvar doesn't exist.
// nothing outside the Cvar_*() functions should modify these fields!
// cvar_restart will reset to this value
// for CVAR_LATCH vars
// set each time the cvar is changed
// incremented each time the cvar is changed
// atof( string )
// atoi( string )
// the modules that run in the virtual machine can't access the cvar_t directly,
// so they must ask for structured updates
/*
==============================================================
VoIP
==============================================================
*/
// if you change the count of flags be sure to also change VOIP_FLAGNUM
// spatialized voip message
// non-spatialized voip message
// number of flags voip knows. You will have to bump protocol version number if you
// change this.
/*
==============================================================
COLLISION DETECTION
==============================================================
*/
// plane types are used to speed some tests
// 0-2 are axial planes
/*
=================
PlaneTypeForNormal
=================
*/
// plane_t structure
// !!! if this is changed, it must be changed in asm code too !!!
#[inline]
pub unsafe extern "C" fn VectorLength(
mut v: *const crate::src::qcommon::q_shared::vec_t,
) -> crate::src::qcommon::q_shared::vec_t {
return crate::stdlib::sqrt(
(*v.offset(0) * *v.offset(0)
+ *v.offset(1) * *v.offset(1)
+ *v.offset(2) * *v.offset(2)) as f64,
) as crate::src::qcommon::q_shared::vec_t;
}
#[inline]
pub unsafe extern "C" fn CrossProduct(
mut v1: *const crate::src::qcommon::q_shared::vec_t,
mut v2: *const crate::src::qcommon::q_shared::vec_t,
mut cross: *mut crate::src::qcommon::q_shared::vec_t,
) {
*cross.offset(0) = *v1.offset(1) * *v2.offset(2) - *v1.offset(2) * *v2.offset(1);
*cross.offset(1) = *v1.offset(2) * *v2.offset(0) - *v1.offset(0) * *v2.offset(2);
*cross.offset(2) = *v1.offset(0) * *v2.offset(1) - *v1.offset(1) * *v2.offset(0);
}
// __Q_SHARED_H
}
pub use crate::src::qcommon::q_math::q_shared_h::CrossProduct;
pub use crate::src::qcommon::q_math::q_shared_h::VectorLength;
pub use crate::src::qcommon::q_shared::byte;
pub use crate::src::qcommon::q_shared::cplane_s;
pub use crate::src::qcommon::q_shared::cplane_t;
pub use crate::src::qcommon::q_shared::floatint_t;
pub use crate::src::qcommon::q_shared::qboolean;
pub use crate::src::qcommon::q_shared::qfalse;
pub use crate::src::qcommon::q_shared::qtrue;
pub use crate::src::qcommon::q_shared::vec3_t;
pub use crate::src::qcommon::q_shared::vec4_t;
pub use crate::src::qcommon::q_shared::vec_t;
/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
This file is part of Quake III Arena source code.
Quake III Arena source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
Quake III Arena source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
//
// q_math.c -- stateless support routines that are included in each code module
// Some of the vector functions are static inline in q_shared.h. q3asm
// doesn't understand static functions though, so we only want them in
// one file. That's what this is about.
#[no_mangle]
pub static mut vec3_origin: crate::src::qcommon::q_shared::vec3_t = [0f32, 0f32, 0f32];
#[no_mangle]
pub static mut axisDefault: [crate::src::qcommon::q_shared::vec3_t; 3] =
[[1f32, 0f32, 0f32], [0f32, 1f32, 0f32], [0f32, 0f32, 1f32]];
#[no_mangle]
pub static mut colorBlack: crate::src::qcommon::q_shared::vec4_t = [0f32, 0f32, 0f32, 1f32];
#[no_mangle]
pub static mut colorRed: crate::src::qcommon::q_shared::vec4_t = [1f32, 0f32, 0f32, 1f32];
#[no_mangle]
pub static mut colorGreen: crate::src::qcommon::q_shared::vec4_t = [0f32, 1f32, 0f32, 1f32];
#[no_mangle]
pub static mut colorBlue: crate::src::qcommon::q_shared::vec4_t = [0f32, 0f32, 1f32, 1f32];
#[no_mangle]
pub static mut colorYellow: crate::src::qcommon::q_shared::vec4_t = [1f32, 1f32, 0f32, 1f32];
#[no_mangle]
pub static mut colorMagenta: crate::src::qcommon::q_shared::vec4_t = [1f32, 0f32, 1f32, 1f32];
#[no_mangle]
pub static mut colorCyan: crate::src::qcommon::q_shared::vec4_t = [0f32, 1f32, 1f32, 1f32];
#[no_mangle]
pub static mut colorWhite: crate::src::qcommon::q_shared::vec4_t = [1f32, 1f32, 1f32, 1f32];
#[no_mangle]
pub static mut colorLtGrey: crate::src::qcommon::q_shared::vec4_t = [0.75, 0.75, 0.75, 1f32];
#[no_mangle]
pub static mut colorMdGrey: crate::src::qcommon::q_shared::vec4_t = [0.5, 0.5, 0.5, 1f32];
#[no_mangle]
pub static mut colorDkGrey: crate::src::qcommon::q_shared::vec4_t = [0.25, 0.25, 0.25, 1f32];
#[no_mangle]
pub static mut g_color_table: [crate::src::qcommon::q_shared::vec4_t; 8] = [
[0f32, 0f32, 0f32, 1f32],
[1f32, 0f32, 0f32, 1f32],
[0f32, 1f32, 0f32, 1f32],
[1f32, 1f32, 0f32, 1f32],
[0f32, 0f32, 1f32, 1f32],
[0f32, 1f32, 1f32, 1f32],
[1f32, 0f32, 1f32, 1f32],
[1f32, 1f32, 1f32, 1f32],
];
#[no_mangle]
pub static mut bytedirs: [crate::src::qcommon::q_shared::vec3_t; 162] = [
[-0.525731, 0.000000, 0.850651],
[-0.442863, 0.238856, 0.864188],
[-0.295242, 0.000000, 0.955423],
[-0.309017, 0.500000, 0.809017],
[-0.162460, 0.262866, 0.951056],
[0.000000, 0.000000, 1.000000],
[0.000000, 0.850651, 0.525731],
[-0.147621, 0.716567, 0.681718],
[0.147621, 0.716567, 0.681718],
[0.000000, 0.525731, 0.850651],
[0.309017, 0.500000, 0.809017],
[0.525731, 0.000000, 0.850651],
[0.295242, 0.000000, 0.955423],
[0.442863, 0.238856, 0.864188],
[0.162460, 0.262866, 0.951056],
[-0.681718, 0.147621, 0.716567],
[-0.809017, 0.309017, 0.500000],
[-0.587785, 0.425325, 0.688191],
[-0.850651, 0.525731, 0.000000],
[-0.864188, 0.442863, 0.238856],
[-0.716567, 0.681718, 0.147621],
[-0.688191, 0.587785, 0.425325],
[-0.500000, 0.809017, 0.309017],
[-0.238856, 0.864188, 0.442863],
[-0.425325, 0.688191, 0.587785],
[-0.716567, 0.681718, -0.147621],
[-0.500000, 0.809017, -0.309017],
[-0.525731, 0.850651, 0.000000],
[0.000000, 0.850651, -0.525731],
[-0.238856, 0.864188, -0.442863],
[0.000000, 0.955423, -0.295242],
[-0.262866, 0.951056, -0.162460],
[0.000000, 1.000000, 0.000000],
[0.000000, 0.955423, 0.295242],
[-0.262866, 0.951056, 0.162460],
[0.238856, 0.864188, 0.442863],
[0.262866, 0.951056, 0.162460],
[0.500000, 0.809017, 0.309017],
[0.238856, 0.864188, -0.442863],
[0.262866, 0.951056, -0.162460],
[0.500000, 0.809017, -0.309017],
[0.850651, 0.525731, 0.000000],
[0.716567, 0.681718, 0.147621],
[0.716567, 0.681718, -0.147621],
[0.525731, 0.850651, 0.000000],
[0.425325, 0.688191, 0.587785],
[0.864188, 0.442863, 0.238856],
[0.688191, 0.587785, 0.425325],
[0.809017, 0.309017, 0.500000],
[0.681718, 0.147621, 0.716567],
[0.587785, 0.425325, 0.688191],
[0.955423, 0.295242, 0.000000],
[1.000000, 0.000000, 0.000000],
[0.951056, 0.162460, 0.262866],
[0.850651, -0.525731, 0.000000],
[0.955423, -0.295242, 0.000000],
[0.864188, -0.442863, 0.238856],
[0.951056, -0.162460, 0.262866],
[0.809017, -0.309017, 0.500000],
[0.681718, -0.147621, 0.716567],
[0.850651, 0.000000, 0.525731],
[0.864188, 0.442863, -0.238856],
[0.809017, 0.309017, -0.500000],
[0.951056, 0.162460, -0.262866],
[0.525731, 0.000000, -0.850651],
[0.681718, 0.147621, -0.716567],
[0.681718, -0.147621, -0.716567],
[0.850651, 0.000000, -0.525731],
[0.809017, -0.309017, -0.500000],
[0.864188, -0.442863, -0.238856],
[0.951056, -0.162460, -0.262866],
[0.147621, 0.716567, -0.681718],
[0.309017, 0.500000, -0.809017],
[0.425325, 0.688191, -0.587785],
[0.442863, 0.238856, -0.864188],
[0.587785, 0.425325, -0.688191],
[0.688191, 0.587785, -0.425325],
[-0.147621, 0.716567, -0.681718],
[-0.309017, 0.500000, -0.809017],
[0.000000, 0.525731, -0.850651],
[-0.525731, 0.000000, -0.850651],
[-0.442863, 0.238856, -0.864188],
[-0.295242, 0.000000, -0.955423],
[-0.162460, 0.262866, -0.951056],
[0.000000, 0.000000, -1.000000],
[0.295242, 0.000000, -0.955423],
[0.162460, 0.262866, -0.951056],
[-0.442863, -0.238856, -0.864188],
[-0.309017, -0.500000, -0.809017],
[-0.162460, -0.262866, -0.951056],
[0.000000, -0.850651, -0.525731],
[-0.147621, -0.716567, -0.681718],
[0.147621, -0.716567, -0.681718],
[0.000000, -0.525731, -0.850651],
[0.309017, -0.500000, -0.809017],
[0.442863, -0.238856, -0.864188],
[0.162460, -0.262866, -0.951056],
[0.238856, -0.864188, -0.442863],
[0.500000, -0.809017, -0.309017],
[0.425325, -0.688191, -0.587785],
[0.716567, -0.681718, -0.147621],
[0.688191, -0.587785, -0.425325],
[0.587785, -0.425325, -0.688191],
[0.000000, -0.955423, -0.295242],
[0.000000, -1.000000, 0.000000],
[0.262866, -0.951056, -0.162460],
[0.000000, -0.850651, 0.525731],
[0.000000, -0.955423, 0.295242],
[0.238856, -0.864188, 0.442863],
[0.262866, -0.951056, 0.162460],
[0.500000, -0.809017, 0.309017],
[0.716567, -0.681718, 0.147621],
[0.525731, -0.850651, 0.000000],
[-0.238856, -0.864188, -0.442863],
[-0.500000, -0.809017, -0.309017],
[-0.262866, -0.951056, -0.162460],
[-0.850651, -0.525731, 0.000000],
[-0.716567, -0.681718, -0.147621],
[-0.716567, -0.681718, 0.147621],
[-0.525731, -0.850651, 0.000000],
[-0.500000, -0.809017, 0.309017],
[-0.238856, -0.864188, 0.442863],
[-0.262866, -0.951056, 0.162460],
[-0.864188, -0.442863, 0.238856],
[-0.809017, -0.309017, 0.500000],
[-0.688191, -0.587785, 0.425325],
[-0.681718, -0.147621, 0.716567],
[-0.442863, -0.238856, 0.864188],
[-0.587785, -0.425325, 0.688191],
[-0.309017, -0.500000, 0.809017],
[-0.147621, -0.716567, 0.681718],
[-0.425325, -0.688191, 0.587785],
[-0.162460, -0.262866, 0.951056],
[0.442863, -0.238856, 0.864188],
[0.162460, -0.262866, 0.951056],
[0.309017, -0.500000, 0.809017],
[0.147621, -0.716567, 0.681718],
[0.000000, -0.525731, 0.850651],
[0.425325, -0.688191, 0.587785],
[0.587785, -0.425325, 0.688191],
[0.688191, -0.587785, 0.425325],
[-0.955423, 0.295242, 0.000000],
[-0.951056, 0.162460, 0.262866],
[-1.000000, 0.000000, 0.000000],
[-0.850651, 0.000000, 0.525731],
[-0.955423, -0.295242, 0.000000],
[-0.951056, -0.162460, 0.262866],
[-0.864188, 0.442863, -0.238856],
[-0.951056, 0.162460, -0.262866],
[-0.809017, 0.309017, -0.500000],
[-0.864188, -0.442863, -0.238856],
[-0.951056, -0.162460, -0.262866],
[-0.809017, -0.309017, -0.500000],
[-0.681718, 0.147621, -0.716567],
[-0.681718, -0.147621, -0.716567],
[-0.850651, 0.000000, -0.525731],
[-0.688191, 0.587785, -0.425325],
[-0.587785, 0.425325, -0.688191],
[-0.425325, 0.688191, -0.587785],
[-0.425325, -0.688191, -0.587785],
[-0.587785, -0.425325, -0.688191],
[-0.688191, -0.587785, -0.425325],
];
//==============================================================
#[no_mangle]
pub unsafe extern "C" fn Q_rand(mut seed: *mut i32) -> i32 {
*seed = (69069u32).wrapping_mul(*seed as u32).wrapping_add(1u32) as i32;
return *seed;
}
#[no_mangle]
pub unsafe extern "C" fn Q_random(mut seed: *mut i32) -> f32 {
return (Q_rand(seed) & 0xffff) as f32 / 65536f32;
}
#[no_mangle]
pub unsafe extern "C" fn Q_crandom(mut seed: *mut i32) -> f32 {
return (2.0 * (Q_random(seed) as f64 - 0.5)) as f32;
}
//=======================================================
#[no_mangle]
pub unsafe extern "C" fn ClampChar(mut i: i32) -> i8 {
if i < -(128) {
return -(128i32) as i8;
}
if i > 127 {
return 127i8;
}
return i as i8;
}
#[no_mangle]
pub unsafe extern "C" fn ClampShort(mut i: i32) -> i16 {
if i < -(32768) {
return -(32768i32) as i16;
}
if i > 0x7fff {
return 0x7fffi16;
}
return i as i16;
}
// this isn't a real cheap function to call!
#[no_mangle]
pub unsafe extern "C" fn DirToByte(mut dir: *mut crate::src::qcommon::q_shared::vec_t) -> i32 {
let mut _i: i32 = 0;
let mut best: i32 = 0;
let mut d: f32 = 0.;
let mut bestd: f32 = 0.;
if dir.is_null() {
return 0i32;
}
bestd = 0f32;
best = 0;
for i in 0..162 {
d = *dir.offset(0) * bytedirs[i as usize][0]
+ *dir.offset(1) * bytedirs[i as usize][1]
+ *dir.offset(2) * bytedirs[i as usize][2];
if d > bestd {
bestd = d;
best = i
}
}
return best;
}
#[no_mangle]
pub unsafe extern "C" fn ByteToDir(mut b: i32, mut dir: *mut crate::src::qcommon::q_shared::vec_t) {
if b < 0 || b >= 162 {
*dir.offset(0) = vec3_origin[0];
*dir.offset(1) = vec3_origin[1];
*dir.offset(2) = vec3_origin[2];
return;
}
*dir.offset(0) = bytedirs[b as usize][0];
*dir.offset(1) = bytedirs[b as usize][1];
*dir.offset(2) = bytedirs[b as usize][2];
}
#[no_mangle]
pub unsafe extern "C" fn ColorBytes3(mut r: f32, mut g: f32, mut b: f32) -> u32 {
let mut i: u32 = 0;
*(&mut i as *mut u32 as *mut crate::src::qcommon::q_shared::byte).offset(0) =
(r * 255f32) as crate::src::qcommon::q_shared::byte;
*(&mut i as *mut u32 as *mut crate::src::qcommon::q_shared::byte).offset(1) =
(g * 255f32) as crate::src::qcommon::q_shared::byte;
*(&mut i as *mut u32 as *mut crate::src::qcommon::q_shared::byte).offset(2) =
(b * 255f32) as crate::src::qcommon::q_shared::byte;
return i;
}
#[no_mangle]
pub unsafe extern "C" fn ColorBytes4(mut r: f32, mut g: f32, mut b: f32, mut a: f32) -> u32 {
let mut i: u32 = 0;
*(&mut i as *mut u32 as *mut crate::src::qcommon::q_shared::byte).offset(0) =
(r * 255f32) as crate::src::qcommon::q_shared::byte;
*(&mut i as *mut u32 as *mut crate::src::qcommon::q_shared::byte).offset(1) =
(g * 255f32) as crate::src::qcommon::q_shared::byte;
*(&mut i as *mut u32 as *mut crate::src::qcommon::q_shared::byte).offset(2) =
(b * 255f32) as crate::src::qcommon::q_shared::byte;
*(&mut i as *mut u32 as *mut crate::src::qcommon::q_shared::byte).offset(3) =
(a * 255f32) as crate::src::qcommon::q_shared::byte;
return i;
}
#[no_mangle]
pub unsafe extern "C" fn NormalizeColor(
mut in_0: *const crate::src::qcommon::q_shared::vec_t,
mut out: *mut crate::src::qcommon::q_shared::vec_t,
) -> f32 {
let mut max: f32 = 0.;
max = *in_0.offset(0);
if *in_0.offset(1) > max {
max = *in_0.offset(1)
}
if *in_0.offset(2) > max {
max = *in_0.offset(2)
}
if max == 0. {
let ref mut fresh0 = *out.offset(2);
*fresh0 = 0f32;
let ref mut fresh1 = *out.offset(1);
*fresh1 = *fresh0;
*out.offset(0) = *fresh1
} else {
*out.offset(0) = *in_0.offset(0) / max;
*out.offset(1) = *in_0.offset(1) / max;
*out.offset(2) = *in_0.offset(2) / max
}
return max;
}
/*
=====================
PlaneFromPoints
Returns false if the triangle is degenrate.
The normal will point out of the clock for clockwise ordered points
=====================
*/
#[no_mangle]
pub unsafe extern "C" fn PlaneFromPoints(
mut plane: *mut crate::src::qcommon::q_shared::vec_t,
mut a: *const crate::src::qcommon::q_shared::vec_t,
mut b: *const crate::src::qcommon::q_shared::vec_t,
mut c: *const crate::src::qcommon::q_shared::vec_t,
) -> crate::src::qcommon::q_shared::qboolean {
let mut d1: crate::src::qcommon::q_shared::vec3_t = [0.; 3];
let mut d2: crate::src::qcommon::q_shared::vec3_t = [0.; 3];
d1[0] = *b.offset(0) - *a.offset(0);
d1[1] = *b.offset(1) - *a.offset(1);
d1[2] = *b.offset(2) - *a.offset(2);
d2[0] = *c.offset(0) - *a.offset(0);
d2[1] = *c.offset(1) - *a.offset(1);
d2[2] = *c.offset(2) - *a.offset(2);
CrossProduct(
d2.as_mut_ptr() as *const crate::src::qcommon::q_shared::vec_t,
d1.as_mut_ptr() as *const crate::src::qcommon::q_shared::vec_t,
plane,
);
if VectorNormalize(plane) == 0f32 {
return crate::src::qcommon::q_shared::qfalse;
}
*plane.offset(3) = *a.offset(0) * *plane.offset(0)
+ *a.offset(1) * *plane.offset(1)
+ *a.offset(2) * *plane.offset(2);
return crate::src::qcommon::q_shared::qtrue;
}
/*
===============
RotatePointAroundVector
This is not implemented very well...
===============
*/
#[no_mangle]
pub unsafe extern "C" fn RotatePointAroundVector(
mut dst: *mut crate::src::qcommon::q_shared::vec_t,
mut dir: *const crate::src::qcommon::q_shared::vec_t,
mut point: *const crate::src::qcommon::q_shared::vec_t,
mut degrees: f32,
) {
let mut m: [[f32; 3]; 3] = [[0.; 3]; 3];
let mut im: [[f32; 3]; 3] = [[0.; 3]; 3];
let mut zrot: [[f32; 3]; 3] = [[0.; 3]; 3];
let mut tmpmat: [[f32; 3]; 3] = [[0.; 3]; 3];
let mut rot: [[f32; 3]; 3] = [[0.; 3]; 3];
let mut i: i32 = 0;
let mut vr: crate::src::qcommon::q_shared::vec3_t = [0.; 3];
let mut vup: crate::src::qcommon::q_shared::vec3_t = [0.; 3];
let mut vf: crate::src::qcommon::q_shared::vec3_t = [0.; 3];
let mut rad: f32 = 0.;
vf[0] = *dir.offset(0);
vf[1] = *dir.offset(1);
vf[2] = *dir.offset(2);
PerpendicularVector(vr.as_mut_ptr(), dir);
CrossProduct(
vr.as_mut_ptr() as *const crate::src::qcommon::q_shared::vec_t,
vf.as_mut_ptr() as *const crate::src::qcommon::q_shared::vec_t,
vup.as_mut_ptr(),
);
m[0][0] = vr[0];
m[1][0] = vr[1];
m[2][0] = vr[2];
m[0][1] = vup[0];
m[1][1] = vup[1];
m[2][1] = vup[2];
m[0][2] = vf[0];
m[1][2] = vf[1];
m[2][2] = vf[2];
crate::stdlib::memcpy(
im.as_mut_ptr() as *mut libc::c_void,
m.as_mut_ptr() as *const libc::c_void,
::std::mem::size_of::<[[f32; 3]; 3]>(),
);
im[0][1] = m[1][0];
im[0][2] = m[2][0];
im[1][0] = m[0][1];
im[1][2] = m[2][1];
im[2][0] = m[0][2];
im[2][1] = m[1][2];
crate::stdlib::memset(
zrot.as_mut_ptr() as *mut libc::c_void,
0,
::std::mem::size_of::<[[f32; 3]; 3]>(),
);
zrot[2][2] = 1.0;
zrot[1][1] = zrot[2][2];
zrot[0][0] = zrot[1][1];
rad = (degrees as f64 * 3.14159265358979323846 / 180f64) as f32;
zrot[0][0] = crate::stdlib::cos(rad as f64) as f32;
zrot[0][1] = crate::stdlib::sin(rad as f64) as f32;
zrot[1][0] = -crate::stdlib::sin(rad as f64) as f32;
zrot[1][1] = crate::stdlib::cos(rad as f64) as f32;
MatrixMultiply(m.as_mut_ptr(), zrot.as_mut_ptr(), tmpmat.as_mut_ptr());
MatrixMultiply(tmpmat.as_mut_ptr(), im.as_mut_ptr(), rot.as_mut_ptr());
i = 0;
while i < 3 {
*dst.offset(i as isize) = rot[i as usize][0] * *point.offset(0)
+ rot[i as usize][1] * *point.offset(1)
+ rot[i as usize][2] * *point.offset(2);
i += 1
}
}
/*
===============
RotateAroundDirection
===============
*/
#[no_mangle]
pub unsafe extern "C" fn RotateAroundDirection(
mut axis: *mut crate::src::qcommon::q_shared::vec3_t,
mut yaw: f32,
) {
// create an arbitrary axis[1]
PerpendicularVector(
(*axis.offset(1)).as_mut_ptr(),
(*axis.offset(0)).as_mut_ptr() as *const crate::src::qcommon::q_shared::vec_t,
);
// rotate it around axis[0] by yaw
if yaw != 0. {
let mut temp: crate::src::qcommon::q_shared::vec3_t = [0.; 3];
temp[0] = (*axis.offset(1))[0];
temp[1] = (*axis.offset(1))[1];
temp[2] = (*axis.offset(1))[2];
RotatePointAroundVector(
(*axis.offset(1isize)).as_mut_ptr(),
(*axis.offset(0isize)).as_mut_ptr() as *const crate::src::qcommon::q_shared::vec_t,
temp.as_mut_ptr() as *const crate::src::qcommon::q_shared::vec_t,
yaw,
);
}
// cross to get axis[2]
CrossProduct(
(*axis.offset(0)).as_mut_ptr() as *const crate::src::qcommon::q_shared::vec_t,
(*axis.offset(1)).as_mut_ptr() as *const crate::src::qcommon::q_shared::vec_t,
(*axis.offset(2)).as_mut_ptr(),
);
}
#[no_mangle]
pub unsafe extern "C" fn vectoangles(
mut value1: *const crate::src::qcommon::q_shared::vec_t,
mut angles: *mut crate::src::qcommon::q_shared::vec_t,
) {
let mut forward: f32 = 0.;
let mut yaw: f32 = 0.;
let mut pitch: f32 = 0.;
if *value1.offset(1) == 0f32 && *value1.offset(0) == 0f32 {
yaw = 0f32;
if *value1.offset(2) > 0f32 {
pitch = 90f32
} else {
pitch = 270f32
}
} else {
if *value1.offset(0) != 0. {
yaw = (crate::stdlib::atan2(*value1.offset(1) as f64, *value1.offset(0) as f64)
* 180f64
/ 3.14159265358979323846) as f32
} else if *value1.offset(1) > 0f32 {
yaw = 90f32
} else {
yaw = 270f32
}
if yaw < 0f32 {
yaw += 360f32
}
forward = crate::stdlib::sqrt(
(*value1.offset(0) * *value1.offset(0) + *value1.offset(1) * *value1.offset(1)) as f64,
) as f32;
pitch = (crate::stdlib::atan2(*value1.offset(2) as f64, forward as f64) * 180f64
/ 3.14159265358979323846) as f32;
if pitch < 0f32 {
pitch += 360f32
}
}
*angles.offset(0) = -pitch;
*angles.offset(1) = yaw;
*angles.offset(2) = 0f32;
}
/*
=================
AnglesToAxis
=================
*/
#[no_mangle]
pub unsafe extern "C" fn AnglesToAxis(
mut angles: *const crate::src::qcommon::q_shared::vec_t,
mut axis: *mut crate::src::qcommon::q_shared::vec3_t,
) {
let mut right: crate::src::qcommon::q_shared::vec3_t = [0.; 3];
// angle vectors returns "right" instead of "y axis"
AngleVectors(
angles,
(*axis.offset(0)).as_mut_ptr(),
right.as_mut_ptr(),
(*axis.offset(2)).as_mut_ptr(),
);
(*axis.offset(1))[0] = vec3_origin[0] - right[0];
(*axis.offset(1))[1] = vec3_origin[1] - right[1];
(*axis.offset(1))[2] = vec3_origin[2] - right[2];
}
#[no_mangle]
pub unsafe extern "C" fn AxisClear(mut axis: *mut crate::src::qcommon::q_shared::vec3_t) {
(*axis.offset(0))[0] = 1f32;
(*axis.offset(0))[1] = 0f32;
(*axis.offset(0))[2] = 0f32;
(*axis.offset(1))[0] = 0f32;
(*axis.offset(1))[1] = 1f32;
(*axis.offset(1))[2] = 0f32;
(*axis.offset(2))[0] = 0f32;
(*axis.offset(2))[1] = 0f32;
(*axis.offset(2))[2] = 1f32;
}
#[no_mangle]
pub unsafe extern "C" fn AxisCopy(
mut in_0: *mut crate::src::qcommon::q_shared::vec3_t,
mut out: *mut crate::src::qcommon::q_shared::vec3_t,
) {
(*out.offset(0))[0] = (*in_0.offset(0))[0];
(*out.offset(0))[1] = (*in_0.offset(0))[1];
(*out.offset(0))[2] = (*in_0.offset(0))[2];
(*out.offset(1))[0] = (*in_0.offset(1))[0];
(*out.offset(1))[1] = (*in_0.offset(1))[1];
(*out.offset(1))[2] = (*in_0.offset(1))[2];
(*out.offset(2))[0] = (*in_0.offset(2))[0];
(*out.offset(2))[1] = (*in_0.offset(2))[1];
(*out.offset(2))[2] = (*in_0.offset(2))[2];
}
#[no_mangle]
pub unsafe extern "C" fn ProjectPointOnPlane(
mut dst: *mut crate::src::qcommon::q_shared::vec_t,
mut p: *const crate::src::qcommon::q_shared::vec_t,
mut normal: *const crate::src::qcommon::q_shared::vec_t,
) {
let mut d: f32 = 0.;
let mut n: crate::src::qcommon::q_shared::vec3_t = [0.; 3];
let mut inv_denom: f32 = 0.;
inv_denom = *normal.offset(0) * *normal.offset(0)
+ *normal.offset(1) * *normal.offset(1)
+ *normal.offset(2) * *normal.offset(2);
// zero vectors get here
inv_denom = 1.0 / inv_denom;
d = (*normal.offset(0) * *p.offset(0)
+ *normal.offset(1) * *p.offset(1)
+ *normal.offset(2) * *p.offset(2))
* inv_denom;
n[0] = *normal.offset(0) * inv_denom;
n[1] = *normal.offset(1) * inv_denom;
n[2] = *normal.offset(2) * inv_denom;
*dst.offset(0) = *p.offset(0) - d * n[0];
*dst.offset(1) = *p.offset(1) - d * n[1];
*dst.offset(2) = *p.offset(2) - d * n[2];
}
/*
================
MakeNormalVectors
Given a normalized forward vector, create two
other perpendicular vectors
================
*/
#[no_mangle]
pub unsafe extern "C" fn MakeNormalVectors(
mut forward: *const crate::src::qcommon::q_shared::vec_t,
mut right: *mut crate::src::qcommon::q_shared::vec_t,
mut up: *mut crate::src::qcommon::q_shared::vec_t,
) {
let mut d: f32 = 0.;
// this rotate and negate guarantees a vector
// not colinear with the original
*right.offset(1) = -*forward.offset(0);
*right.offset(2) = *forward.offset(1);
*right.offset(0) = *forward.offset(2);
d = *right.offset(0) * *forward.offset(0)
+ *right.offset(1) * *forward.offset(1)
+ *right.offset(2) * *forward.offset(2);
*right.offset(0) = *right.offset(0) + *forward.offset(0) * -d;
*right.offset(1) = *right.offset(1) + *forward.offset(1) * -d;
*right.offset(2) = *right.offset(2) + *forward.offset(2) * -d;
VectorNormalize(right);
CrossProduct(
right as *const crate::src::qcommon::q_shared::vec_t,
forward,
up,
);
}
#[no_mangle]
pub unsafe extern "C" fn VectorRotate(
mut in_0: *mut crate::src::qcommon::q_shared::vec_t,
mut matrix: *mut crate::src::qcommon::q_shared::vec3_t,
mut out: *mut crate::src::qcommon::q_shared::vec_t,
) {
*out.offset(0) = *in_0.offset(0) * (*matrix.offset(0))[0]
+ *in_0.offset(1) * (*matrix.offset(0))[1]
+ *in_0.offset(2) * (*matrix.offset(0))[2];
*out.offset(1) = *in_0.offset(0) * (*matrix.offset(1))[0]
+ *in_0.offset(1) * (*matrix.offset(1))[1]
+ *in_0.offset(2) * (*matrix.offset(1))[2];
*out.offset(2) = *in_0.offset(0) * (*matrix.offset(2))[0]
+ *in_0.offset(1) * (*matrix.offset(2))[1]
+ *in_0.offset(2) * (*matrix.offset(2))[2];
}
//============================================================================
/*
** float q_rsqrt( float number )
*/
#[no_mangle]
pub unsafe extern "C" fn Q_rsqrt(mut number: f32) -> f32 {
let mut t: crate::src::qcommon::q_shared::floatint_t =
crate::src::qcommon::q_shared::floatint_t { f: 0. }; // what the fuck?
let mut x2: f32 = 0.; // 1st iteration
let mut y: f32 = 0.;
let threehalfs: f32 = 1.5;
x2 = number * 0.5;
t.f = number;
t.i = 0x5f3759df - (t.i >> 1);
y = t.f;
y = y * (threehalfs - x2 * y * y);
// y = y * ( threehalfs - ( x2 * y * y ) ); // 2nd iteration, this can be removed
return y;
}
#[no_mangle]
pub unsafe extern "C" fn Q_fabs(mut f: f32) -> f32 {
let mut fi: crate::src::qcommon::q_shared::floatint_t =
crate::src::qcommon::q_shared::floatint_t { f: 0. };
fi.f = f;
fi.i &= 0x7fffffff;
return fi.f;
}
//============================================================
/*
===============
LerpAngle
===============
*/
#[no_mangle]
pub unsafe extern "C" fn LerpAngle(mut from: f32, mut to: f32, mut frac: f32) -> f32 {
let mut a: f32 = 0.;
if to - from > 180f32 {
to -= 360f32
}
if to - from < -180f32 {
to += 360f32
}
a = from + frac * (to - from);
return a;
}
/*
=================
AngleSubtract
Always returns a value from -180 to 180
=================
*/
#[no_mangle]
pub unsafe extern "C" fn AngleSubtract(mut a1: f32, mut a2: f32) -> f32 {
let mut a: f32 = 0.;
a = a1 - a2;
while a > 180f32 {
a -= 360f32
}
while a < -180f32 {
a += 360f32
}
return a;
}
#[no_mangle]
pub unsafe extern "C" fn AnglesSubtract(
mut v1: *mut crate::src::qcommon::q_shared::vec_t,
mut v2: *mut crate::src::qcommon::q_shared::vec_t,
mut v3: *mut crate::src::qcommon::q_shared::vec_t,
) {
*v3.offset(0) = AngleSubtract(*v1.offset(0), *v2.offset(0));
*v3.offset(1) = AngleSubtract(*v1.offset(1), *v2.offset(1));
*v3.offset(2) = AngleSubtract(*v1.offset(2), *v2.offset(2));
}
#[no_mangle]
pub unsafe extern "C" fn AngleMod(mut a: f32) -> f32 {
a = (360.0 / 65536f64 * ((a as f64 * (65536f64 / 360.0)) as i32 & 65535) as f64) as f32;
return a;
}
/*
=================
AngleNormalize360
returns angle normalized to the range [0 <= angle < 360]
=================
*/
#[no_mangle]
pub unsafe extern "C" fn AngleNormalize360(mut angle: f32) -> f32 {
return (360.0 / 65536f64 * ((angle as f64 * (65536f64 / 360.0)) as i32 & 65535) as f64) as f32;
}
/*
=================
AngleNormalize180
returns angle normalized to the range [-180 < angle <= 180]
=================
*/
#[no_mangle]
pub unsafe extern "C" fn AngleNormalize180(mut angle: f32) -> f32 {
angle = AngleNormalize360(angle);
if angle as f64 > 180.0 {
angle = (angle as f64 - 360.0) as f32
}
return angle;
}
/*
=================
AngleDelta
returns the normalized delta from angle1 to angle2
=================
*/
#[no_mangle]
pub unsafe extern "C" fn AngleDelta(mut angle1: f32, mut angle2: f32) -> f32 {
return AngleNormalize180(angle1 - angle2);
}
//============================================================
/*
=================
SetPlaneSignbits
=================
*/
#[no_mangle]
pub unsafe extern "C" fn SetPlaneSignbits(mut out: *mut crate::src::qcommon::q_shared::cplane_t) {
let mut bits: i32 = 0;
let mut _j: i32 = 0;
// for fast box on planeside test
bits = 0;
for j in 0..3 {
if (*out).normal[j as usize] < 0f32 {
bits |= (1) << j
}
}
(*out).signbits = bits as crate::src::qcommon::q_shared::byte;
}
/*
==================
BoxOnPlaneSide