From a8f828a066773a59fdf646299359d35ae0e845af Mon Sep 17 00:00:00 2001 From: wyatt8740 Date: Mon, 6 Jan 2014 12:02:16 -0500 Subject: Removed accidental upload of copyrighted map files --- WinQuake/mathlib.c | 1170 ++++++++++++++++++++++++++-------------------------- 1 file changed, 585 insertions(+), 585 deletions(-) (limited to 'WinQuake/mathlib.c') diff --git a/WinQuake/mathlib.c b/WinQuake/mathlib.c index 9f5d644..cf8c672 100644 --- a/WinQuake/mathlib.c +++ b/WinQuake/mathlib.c @@ -1,585 +1,585 @@ -/* -Copyright (C) 1996-1997 Id Software, Inc. - -This program 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. - -This program 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 this program; if not, write to the Free Software -Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. - -*/ -// mathlib.c -- math primitives - -#include -#include "quakedef.h" - -void Sys_Error (char *error, ...); - -vec3_t vec3_origin = {0,0,0}; -int nanmask = 255<<23; - -/*-----------------------------------------------------------------*/ - -#define DEG2RAD( a ) ( a * M_PI ) / 180.0F - -void ProjectPointOnPlane( vec3_t dst, const vec3_t p, const vec3_t normal ) -{ - float d; - vec3_t n; - float inv_denom; - - inv_denom = 1.0F / DotProduct( normal, normal ); - - d = DotProduct( normal, p ) * inv_denom; - - n[0] = normal[0] * inv_denom; - n[1] = normal[1] * inv_denom; - n[2] = normal[2] * inv_denom; - - dst[0] = p[0] - d * n[0]; - dst[1] = p[1] - d * n[1]; - dst[2] = p[2] - d * n[2]; -} - -/* -** assumes "src" is normalized -*/ -void PerpendicularVector( vec3_t dst, const vec3_t src ) -{ - int pos; - int i; - float minelem = 1.0F; - vec3_t tempvec; - - /* - ** find the smallest magnitude axially aligned vector - */ - for ( pos = 0, i = 0; i < 3; i++ ) - { - if ( fabs( src[i] ) < minelem ) - { - pos = i; - minelem = fabs( src[i] ); - } - } - tempvec[0] = tempvec[1] = tempvec[2] = 0.0F; - tempvec[pos] = 1.0F; - - /* - ** project the point onto the plane defined by src - */ - ProjectPointOnPlane( dst, tempvec, src ); - - /* - ** normalize the result - */ - VectorNormalize( dst ); -} - -#ifdef _WIN32 -#pragma optimize( "", off ) -#endif - - -void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees ) -{ - float m[3][3]; - float im[3][3]; - float zrot[3][3]; - float tmpmat[3][3]; - float rot[3][3]; - int i; - vec3_t vr, vup, vf; - - vf[0] = dir[0]; - vf[1] = dir[1]; - vf[2] = dir[2]; - - PerpendicularVector( vr, dir ); - CrossProduct( vr, vf, vup ); - - 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]; - - memcpy( im, m, sizeof( im ) ); - - 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]; - - memset( zrot, 0, sizeof( zrot ) ); - zrot[0][0] = zrot[1][1] = zrot[2][2] = 1.0F; - - zrot[0][0] = cos( DEG2RAD( degrees ) ); - zrot[0][1] = sin( DEG2RAD( degrees ) ); - zrot[1][0] = -sin( DEG2RAD( degrees ) ); - zrot[1][1] = cos( DEG2RAD( degrees ) ); - - R_ConcatRotations( m, zrot, tmpmat ); - R_ConcatRotations( tmpmat, im, rot ); - - for ( i = 0; i < 3; i++ ) - { - dst[i] = rot[i][0] * point[0] + rot[i][1] * point[1] + rot[i][2] * point[2]; - } -} - -#ifdef _WIN32 -#pragma optimize( "", on ) -#endif - -/*-----------------------------------------------------------------*/ - - -float anglemod(float a) -{ -#if 0 - if (a >= 0) - a -= 360*(int)(a/360); - else - a += 360*( 1 + (int)(-a/360) ); -#endif - a = (360.0/65536) * ((int)(a*(65536/360.0)) & 65535); - return a; -} - -/* -================== -BOPS_Error - -Split out like this for ASM to call. -================== -*/ -void BOPS_Error (void) -{ - Sys_Error ("BoxOnPlaneSide: Bad signbits"); -} - - -#if !id386 - -/* -================== -BoxOnPlaneSide - -Returns 1, 2, or 1 + 2 -================== -*/ -int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, mplane_t *p) -{ - float dist1, dist2; - int sides; - -#if 0 // this is done by the BOX_ON_PLANE_SIDE macro before calling this - // function -// fast axial cases - if (p->type < 3) - { - if (p->dist <= emins[p->type]) - return 1; - if (p->dist >= emaxs[p->type]) - return 2; - return 3; - } -#endif - -// general case - switch (p->signbits) - { - case 0: -dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]; -dist2 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]; - break; - case 1: -dist1 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]; -dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]; - break; - case 2: -dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]; -dist2 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]; - break; - case 3: -dist1 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]; -dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]; - break; - case 4: -dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]; -dist2 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]; - break; - case 5: -dist1 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]; -dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]; - break; - case 6: -dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]; -dist2 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]; - break; - case 7: -dist1 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]; -dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]; - break; - default: - dist1 = dist2 = 0; // shut up compiler - BOPS_Error (); - break; - } - -#if 0 - int i; - vec3_t corners[2]; - - for (i=0 ; i<3 ; i++) - { - if (plane->normal[i] < 0) - { - corners[0][i] = emins[i]; - corners[1][i] = emaxs[i]; - } - else - { - corners[1][i] = emins[i]; - corners[0][i] = emaxs[i]; - } - } - dist = DotProduct (plane->normal, corners[0]) - plane->dist; - dist2 = DotProduct (plane->normal, corners[1]) - plane->dist; - sides = 0; - if (dist1 >= 0) - sides = 1; - if (dist2 < 0) - sides |= 2; - -#endif - - sides = 0; - if (dist1 >= p->dist) - sides = 1; - if (dist2 < p->dist) - sides |= 2; - -#ifdef PARANOID -if (sides == 0) - Sys_Error ("BoxOnPlaneSide: sides==0"); -#endif - - return sides; -} - -#endif - - -void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up) -{ - float angle; - float sr, sp, sy, cr, cp, cy; - - angle = angles[YAW] * (M_PI*2 / 360); - sy = sin(angle); - cy = cos(angle); - angle = angles[PITCH] * (M_PI*2 / 360); - sp = sin(angle); - cp = cos(angle); - angle = angles[ROLL] * (M_PI*2 / 360); - sr = sin(angle); - cr = cos(angle); - - forward[0] = cp*cy; - forward[1] = cp*sy; - forward[2] = -sp; - right[0] = (-1*sr*sp*cy+-1*cr*-sy); - right[1] = (-1*sr*sp*sy+-1*cr*cy); - right[2] = -1*sr*cp; - up[0] = (cr*sp*cy+-sr*-sy); - up[1] = (cr*sp*sy+-sr*cy); - up[2] = cr*cp; -} - -int VectorCompare (vec3_t v1, vec3_t v2) -{ - int i; - - for (i=0 ; i<3 ; i++) - if (v1[i] != v2[i]) - return 0; - - return 1; -} - -void VectorMA (vec3_t veca, float scale, vec3_t vecb, vec3_t vecc) -{ - vecc[0] = veca[0] + scale*vecb[0]; - vecc[1] = veca[1] + scale*vecb[1]; - vecc[2] = veca[2] + scale*vecb[2]; -} - - -vec_t _DotProduct (vec3_t v1, vec3_t v2) -{ - return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2]; -} - -void _VectorSubtract (vec3_t veca, vec3_t vecb, vec3_t out) -{ - out[0] = veca[0]-vecb[0]; - out[1] = veca[1]-vecb[1]; - out[2] = veca[2]-vecb[2]; -} - -void _VectorAdd (vec3_t veca, vec3_t vecb, vec3_t out) -{ - out[0] = veca[0]+vecb[0]; - out[1] = veca[1]+vecb[1]; - out[2] = veca[2]+vecb[2]; -} - -void _VectorCopy (vec3_t in, vec3_t out) -{ - out[0] = in[0]; - out[1] = in[1]; - out[2] = in[2]; -} - -void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross) -{ - cross[0] = v1[1]*v2[2] - v1[2]*v2[1]; - cross[1] = v1[2]*v2[0] - v1[0]*v2[2]; - cross[2] = v1[0]*v2[1] - v1[1]*v2[0]; -} - -double sqrt(double x); - -vec_t Length(vec3_t v) -{ - int i; - float length; - - length = 0; - for (i=0 ; i< 3 ; i++) - length += v[i]*v[i]; - length = sqrt (length); // FIXME - - return length; -} - -float VectorNormalize (vec3_t v) -{ - float length, ilength; - - length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2]; - length = sqrt (length); // FIXME - - if (length) - { - ilength = 1/length; - v[0] *= ilength; - v[1] *= ilength; - v[2] *= ilength; - } - - return length; - -} - -void VectorInverse (vec3_t v) -{ - v[0] = -v[0]; - v[1] = -v[1]; - v[2] = -v[2]; -} - -void VectorScale (vec3_t in, vec_t scale, vec3_t out) -{ - out[0] = in[0]*scale; - out[1] = in[1]*scale; - out[2] = in[2]*scale; -} - - -int Q_log2(int val) -{ - int answer=0; - while (val>>=1) - answer++; - return answer; -} - - -/* -================ -R_ConcatRotations -================ -*/ -void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3]) -{ - out[0][0] = in1[0][0] * in2[0][0] + in1[0][1] * in2[1][0] + - in1[0][2] * in2[2][0]; - out[0][1] = in1[0][0] * in2[0][1] + in1[0][1] * in2[1][1] + - in1[0][2] * in2[2][1]; - out[0][2] = in1[0][0] * in2[0][2] + in1[0][1] * in2[1][2] + - in1[0][2] * in2[2][2]; - out[1][0] = in1[1][0] * in2[0][0] + in1[1][1] * in2[1][0] + - in1[1][2] * in2[2][0]; - out[1][1] = in1[1][0] * in2[0][1] + in1[1][1] * in2[1][1] + - in1[1][2] * in2[2][1]; - out[1][2] = in1[1][0] * in2[0][2] + in1[1][1] * in2[1][2] + - in1[1][2] * in2[2][2]; - out[2][0] = in1[2][0] * in2[0][0] + in1[2][1] * in2[1][0] + - in1[2][2] * in2[2][0]; - out[2][1] = in1[2][0] * in2[0][1] + in1[2][1] * in2[1][1] + - in1[2][2] * in2[2][1]; - out[2][2] = in1[2][0] * in2[0][2] + in1[2][1] * in2[1][2] + - in1[2][2] * in2[2][2]; -} - - -/* -================ -R_ConcatTransforms -================ -*/ -void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4]) -{ - out[0][0] = in1[0][0] * in2[0][0] + in1[0][1] * in2[1][0] + - in1[0][2] * in2[2][0]; - out[0][1] = in1[0][0] * in2[0][1] + in1[0][1] * in2[1][1] + - in1[0][2] * in2[2][1]; - out[0][2] = in1[0][0] * in2[0][2] + in1[0][1] * in2[1][2] + - in1[0][2] * in2[2][2]; - out[0][3] = in1[0][0] * in2[0][3] + in1[0][1] * in2[1][3] + - in1[0][2] * in2[2][3] + in1[0][3]; - out[1][0] = in1[1][0] * in2[0][0] + in1[1][1] * in2[1][0] + - in1[1][2] * in2[2][0]; - out[1][1] = in1[1][0] * in2[0][1] + in1[1][1] * in2[1][1] + - in1[1][2] * in2[2][1]; - out[1][2] = in1[1][0] * in2[0][2] + in1[1][1] * in2[1][2] + - in1[1][2] * in2[2][2]; - out[1][3] = in1[1][0] * in2[0][3] + in1[1][1] * in2[1][3] + - in1[1][2] * in2[2][3] + in1[1][3]; - out[2][0] = in1[2][0] * in2[0][0] + in1[2][1] * in2[1][0] + - in1[2][2] * in2[2][0]; - out[2][1] = in1[2][0] * in2[0][1] + in1[2][1] * in2[1][1] + - in1[2][2] * in2[2][1]; - out[2][2] = in1[2][0] * in2[0][2] + in1[2][1] * in2[1][2] + - in1[2][2] * in2[2][2]; - out[2][3] = in1[2][0] * in2[0][3] + in1[2][1] * in2[1][3] + - in1[2][2] * in2[2][3] + in1[2][3]; -} - - -/* -=================== -FloorDivMod - -Returns mathematically correct (floor-based) quotient and remainder for -numer and denom, both of which should contain no fractional part. The -quotient must fit in 32 bits. -==================== -*/ - -void FloorDivMod (double numer, double denom, int *quotient, - int *rem) -{ - int q, r; - double x; - -#ifndef PARANOID - if (denom <= 0.0) - Sys_Error ("FloorDivMod: bad denominator %d\n", denom); - -// if ((floor(numer) != numer) || (floor(denom) != denom)) -// Sys_Error ("FloorDivMod: non-integer numer or denom %f %f\n", -// numer, denom); -#endif - - if (numer >= 0.0) - { - - x = floor(numer / denom); - q = (int)x; - r = (int)floor(numer - (x * denom)); - } - else - { - // - // perform operations with positive values, and fix mod to make floor-based - // - x = floor(-numer / denom); - q = -(int)x; - r = (int)floor(-numer - (x * denom)); - if (r != 0) - { - q--; - r = (int)denom - r; - } - } - - *quotient = q; - *rem = r; -} - - -/* -=================== -GreatestCommonDivisor -==================== -*/ -int GreatestCommonDivisor (int i1, int i2) -{ - if (i1 > i2) - { - if (i2 == 0) - return (i1); - return GreatestCommonDivisor (i2, i1 % i2); - } - else - { - if (i1 == 0) - return (i2); - return GreatestCommonDivisor (i1, i2 % i1); - } -} - - -#if !id386 - -// TODO: move to nonintel.c - -/* -=================== -Invert24To16 - -Inverts an 8.24 value to a 16.16 value -==================== -*/ - -fixed16_t Invert24To16(fixed16_t val) -{ - if (val < 256) - return (0xFFFFFFFF); - - return (fixed16_t) - (((double)0x10000 * (double)0x1000000 / (double)val) + 0.5); -} - -#endif +/* +Copyright (C) 1996-1997 Id Software, Inc. + +This program 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. + +This program 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 this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ +// mathlib.c -- math primitives + +#include +#include "quakedef.h" + +void Sys_Error (char *error, ...); + +vec3_t vec3_origin = {0,0,0}; +int nanmask = 255<<23; + +/*-----------------------------------------------------------------*/ + +#define DEG2RAD( a ) ( a * M_PI ) / 180.0F + +void ProjectPointOnPlane( vec3_t dst, const vec3_t p, const vec3_t normal ) +{ + float d; + vec3_t n; + float inv_denom; + + inv_denom = 1.0F / DotProduct( normal, normal ); + + d = DotProduct( normal, p ) * inv_denom; + + n[0] = normal[0] * inv_denom; + n[1] = normal[1] * inv_denom; + n[2] = normal[2] * inv_denom; + + dst[0] = p[0] - d * n[0]; + dst[1] = p[1] - d * n[1]; + dst[2] = p[2] - d * n[2]; +} + +/* +** assumes "src" is normalized +*/ +void PerpendicularVector( vec3_t dst, const vec3_t src ) +{ + int pos; + int i; + float minelem = 1.0F; + vec3_t tempvec; + + /* + ** find the smallest magnitude axially aligned vector + */ + for ( pos = 0, i = 0; i < 3; i++ ) + { + if ( fabs( src[i] ) < minelem ) + { + pos = i; + minelem = fabs( src[i] ); + } + } + tempvec[0] = tempvec[1] = tempvec[2] = 0.0F; + tempvec[pos] = 1.0F; + + /* + ** project the point onto the plane defined by src + */ + ProjectPointOnPlane( dst, tempvec, src ); + + /* + ** normalize the result + */ + VectorNormalize( dst ); +} + +#ifdef _WIN32 +#pragma optimize( "", off ) +#endif + + +void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees ) +{ + float m[3][3]; + float im[3][3]; + float zrot[3][3]; + float tmpmat[3][3]; + float rot[3][3]; + int i; + vec3_t vr, vup, vf; + + vf[0] = dir[0]; + vf[1] = dir[1]; + vf[2] = dir[2]; + + PerpendicularVector( vr, dir ); + CrossProduct( vr, vf, vup ); + + 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]; + + memcpy( im, m, sizeof( im ) ); + + 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]; + + memset( zrot, 0, sizeof( zrot ) ); + zrot[0][0] = zrot[1][1] = zrot[2][2] = 1.0F; + + zrot[0][0] = cos( DEG2RAD( degrees ) ); + zrot[0][1] = sin( DEG2RAD( degrees ) ); + zrot[1][0] = -sin( DEG2RAD( degrees ) ); + zrot[1][1] = cos( DEG2RAD( degrees ) ); + + R_ConcatRotations( m, zrot, tmpmat ); + R_ConcatRotations( tmpmat, im, rot ); + + for ( i = 0; i < 3; i++ ) + { + dst[i] = rot[i][0] * point[0] + rot[i][1] * point[1] + rot[i][2] * point[2]; + } +} + +#ifdef _WIN32 +#pragma optimize( "", on ) +#endif + +/*-----------------------------------------------------------------*/ + + +float anglemod(float a) +{ +#if 0 + if (a >= 0) + a -= 360*(int)(a/360); + else + a += 360*( 1 + (int)(-a/360) ); +#endif + a = (360.0/65536) * ((int)(a*(65536/360.0)) & 65535); + return a; +} + +/* +================== +BOPS_Error + +Split out like this for ASM to call. +================== +*/ +void BOPS_Error (void) +{ + Sys_Error ("BoxOnPlaneSide: Bad signbits"); +} + + +#if !id386 + +/* +================== +BoxOnPlaneSide + +Returns 1, 2, or 1 + 2 +================== +*/ +int BoxOnPlaneSide (vec3_t emins, vec3_t emaxs, mplane_t *p) +{ + float dist1, dist2; + int sides; + +#if 0 // this is done by the BOX_ON_PLANE_SIDE macro before calling this + // function +// fast axial cases + if (p->type < 3) + { + if (p->dist <= emins[p->type]) + return 1; + if (p->dist >= emaxs[p->type]) + return 2; + return 3; + } +#endif + +// general case + switch (p->signbits) + { + case 0: +dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]; +dist2 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]; + break; + case 1: +dist1 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]; +dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]; + break; + case 2: +dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]; +dist2 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]; + break; + case 3: +dist1 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]; +dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]; + break; + case 4: +dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]; +dist2 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]; + break; + case 5: +dist1 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2]; +dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2]; + break; + case 6: +dist1 = p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]; +dist2 = p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]; + break; + case 7: +dist1 = p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2]; +dist2 = p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2]; + break; + default: + dist1 = dist2 = 0; // shut up compiler + BOPS_Error (); + break; + } + +#if 0 + int i; + vec3_t corners[2]; + + for (i=0 ; i<3 ; i++) + { + if (plane->normal[i] < 0) + { + corners[0][i] = emins[i]; + corners[1][i] = emaxs[i]; + } + else + { + corners[1][i] = emins[i]; + corners[0][i] = emaxs[i]; + } + } + dist = DotProduct (plane->normal, corners[0]) - plane->dist; + dist2 = DotProduct (plane->normal, corners[1]) - plane->dist; + sides = 0; + if (dist1 >= 0) + sides = 1; + if (dist2 < 0) + sides |= 2; + +#endif + + sides = 0; + if (dist1 >= p->dist) + sides = 1; + if (dist2 < p->dist) + sides |= 2; + +#ifdef PARANOID +if (sides == 0) + Sys_Error ("BoxOnPlaneSide: sides==0"); +#endif + + return sides; +} + +#endif + + +void AngleVectors (vec3_t angles, vec3_t forward, vec3_t right, vec3_t up) +{ + float angle; + float sr, sp, sy, cr, cp, cy; + + angle = angles[YAW] * (M_PI*2 / 360); + sy = sin(angle); + cy = cos(angle); + angle = angles[PITCH] * (M_PI*2 / 360); + sp = sin(angle); + cp = cos(angle); + angle = angles[ROLL] * (M_PI*2 / 360); + sr = sin(angle); + cr = cos(angle); + + forward[0] = cp*cy; + forward[1] = cp*sy; + forward[2] = -sp; + right[0] = (-1*sr*sp*cy+-1*cr*-sy); + right[1] = (-1*sr*sp*sy+-1*cr*cy); + right[2] = -1*sr*cp; + up[0] = (cr*sp*cy+-sr*-sy); + up[1] = (cr*sp*sy+-sr*cy); + up[2] = cr*cp; +} + +int VectorCompare (vec3_t v1, vec3_t v2) +{ + int i; + + for (i=0 ; i<3 ; i++) + if (v1[i] != v2[i]) + return 0; + + return 1; +} + +void VectorMA (vec3_t veca, float scale, vec3_t vecb, vec3_t vecc) +{ + vecc[0] = veca[0] + scale*vecb[0]; + vecc[1] = veca[1] + scale*vecb[1]; + vecc[2] = veca[2] + scale*vecb[2]; +} + + +vec_t _DotProduct (vec3_t v1, vec3_t v2) +{ + return v1[0]*v2[0] + v1[1]*v2[1] + v1[2]*v2[2]; +} + +void _VectorSubtract (vec3_t veca, vec3_t vecb, vec3_t out) +{ + out[0] = veca[0]-vecb[0]; + out[1] = veca[1]-vecb[1]; + out[2] = veca[2]-vecb[2]; +} + +void _VectorAdd (vec3_t veca, vec3_t vecb, vec3_t out) +{ + out[0] = veca[0]+vecb[0]; + out[1] = veca[1]+vecb[1]; + out[2] = veca[2]+vecb[2]; +} + +void _VectorCopy (vec3_t in, vec3_t out) +{ + out[0] = in[0]; + out[1] = in[1]; + out[2] = in[2]; +} + +void CrossProduct (vec3_t v1, vec3_t v2, vec3_t cross) +{ + cross[0] = v1[1]*v2[2] - v1[2]*v2[1]; + cross[1] = v1[2]*v2[0] - v1[0]*v2[2]; + cross[2] = v1[0]*v2[1] - v1[1]*v2[0]; +} + +double sqrt(double x); + +vec_t Length(vec3_t v) +{ + int i; + float length; + + length = 0; + for (i=0 ; i< 3 ; i++) + length += v[i]*v[i]; + length = sqrt (length); // FIXME + + return length; +} + +float VectorNormalize (vec3_t v) +{ + float length, ilength; + + length = v[0]*v[0] + v[1]*v[1] + v[2]*v[2]; + length = sqrt (length); // FIXME + + if (length) + { + ilength = 1/length; + v[0] *= ilength; + v[1] *= ilength; + v[2] *= ilength; + } + + return length; + +} + +void VectorInverse (vec3_t v) +{ + v[0] = -v[0]; + v[1] = -v[1]; + v[2] = -v[2]; +} + +void VectorScale (vec3_t in, vec_t scale, vec3_t out) +{ + out[0] = in[0]*scale; + out[1] = in[1]*scale; + out[2] = in[2]*scale; +} + + +int Q_log2(int val) +{ + int answer=0; + while (val>>=1) + answer++; + return answer; +} + + +/* +================ +R_ConcatRotations +================ +*/ +void R_ConcatRotations (float in1[3][3], float in2[3][3], float out[3][3]) +{ + out[0][0] = in1[0][0] * in2[0][0] + in1[0][1] * in2[1][0] + + in1[0][2] * in2[2][0]; + out[0][1] = in1[0][0] * in2[0][1] + in1[0][1] * in2[1][1] + + in1[0][2] * in2[2][1]; + out[0][2] = in1[0][0] * in2[0][2] + in1[0][1] * in2[1][2] + + in1[0][2] * in2[2][2]; + out[1][0] = in1[1][0] * in2[0][0] + in1[1][1] * in2[1][0] + + in1[1][2] * in2[2][0]; + out[1][1] = in1[1][0] * in2[0][1] + in1[1][1] * in2[1][1] + + in1[1][2] * in2[2][1]; + out[1][2] = in1[1][0] * in2[0][2] + in1[1][1] * in2[1][2] + + in1[1][2] * in2[2][2]; + out[2][0] = in1[2][0] * in2[0][0] + in1[2][1] * in2[1][0] + + in1[2][2] * in2[2][0]; + out[2][1] = in1[2][0] * in2[0][1] + in1[2][1] * in2[1][1] + + in1[2][2] * in2[2][1]; + out[2][2] = in1[2][0] * in2[0][2] + in1[2][1] * in2[1][2] + + in1[2][2] * in2[2][2]; +} + + +/* +================ +R_ConcatTransforms +================ +*/ +void R_ConcatTransforms (float in1[3][4], float in2[3][4], float out[3][4]) +{ + out[0][0] = in1[0][0] * in2[0][0] + in1[0][1] * in2[1][0] + + in1[0][2] * in2[2][0]; + out[0][1] = in1[0][0] * in2[0][1] + in1[0][1] * in2[1][1] + + in1[0][2] * in2[2][1]; + out[0][2] = in1[0][0] * in2[0][2] + in1[0][1] * in2[1][2] + + in1[0][2] * in2[2][2]; + out[0][3] = in1[0][0] * in2[0][3] + in1[0][1] * in2[1][3] + + in1[0][2] * in2[2][3] + in1[0][3]; + out[1][0] = in1[1][0] * in2[0][0] + in1[1][1] * in2[1][0] + + in1[1][2] * in2[2][0]; + out[1][1] = in1[1][0] * in2[0][1] + in1[1][1] * in2[1][1] + + in1[1][2] * in2[2][1]; + out[1][2] = in1[1][0] * in2[0][2] + in1[1][1] * in2[1][2] + + in1[1][2] * in2[2][2]; + out[1][3] = in1[1][0] * in2[0][3] + in1[1][1] * in2[1][3] + + in1[1][2] * in2[2][3] + in1[1][3]; + out[2][0] = in1[2][0] * in2[0][0] + in1[2][1] * in2[1][0] + + in1[2][2] * in2[2][0]; + out[2][1] = in1[2][0] * in2[0][1] + in1[2][1] * in2[1][1] + + in1[2][2] * in2[2][1]; + out[2][2] = in1[2][0] * in2[0][2] + in1[2][1] * in2[1][2] + + in1[2][2] * in2[2][2]; + out[2][3] = in1[2][0] * in2[0][3] + in1[2][1] * in2[1][3] + + in1[2][2] * in2[2][3] + in1[2][3]; +} + + +/* +=================== +FloorDivMod + +Returns mathematically correct (floor-based) quotient and remainder for +numer and denom, both of which should contain no fractional part. The +quotient must fit in 32 bits. +==================== +*/ + +void FloorDivMod (double numer, double denom, int *quotient, + int *rem) +{ + int q, r; + double x; + +#ifndef PARANOID + if (denom <= 0.0) + Sys_Error ("FloorDivMod: bad denominator %d\n", denom); + +// if ((floor(numer) != numer) || (floor(denom) != denom)) +// Sys_Error ("FloorDivMod: non-integer numer or denom %f %f\n", +// numer, denom); +#endif + + if (numer >= 0.0) + { + + x = floor(numer / denom); + q = (int)x; + r = (int)floor(numer - (x * denom)); + } + else + { + // + // perform operations with positive values, and fix mod to make floor-based + // + x = floor(-numer / denom); + q = -(int)x; + r = (int)floor(-numer - (x * denom)); + if (r != 0) + { + q--; + r = (int)denom - r; + } + } + + *quotient = q; + *rem = r; +} + + +/* +=================== +GreatestCommonDivisor +==================== +*/ +int GreatestCommonDivisor (int i1, int i2) +{ + if (i1 > i2) + { + if (i2 == 0) + return (i1); + return GreatestCommonDivisor (i2, i1 % i2); + } + else + { + if (i1 == 0) + return (i2); + return GreatestCommonDivisor (i1, i2 % i1); + } +} + + +#if !id386 + +// TODO: move to nonintel.c + +/* +=================== +Invert24To16 + +Inverts an 8.24 value to a 16.16 value +==================== +*/ + +fixed16_t Invert24To16(fixed16_t val) +{ + if (val < 256) + return (0xFFFFFFFF); + + return (fixed16_t) + (((double)0x10000 * (double)0x1000000 / (double)val) + 0.5); +} + +#endif -- cgit v1.2.3