X-Git-Url: http://de.git.xonotic.org/?a=blobdiff_plain;f=libs%2Fsplines%2Fmath_vector.cpp;h=572f903e0611fc732dc3ff9b5300261ad11c9789;hb=b8fc25203ea2cc9290954c68dbf6208c6438a36e;hp=7237de5252778f8d6192687092be8309bc058a3f;hpb=80378101101ca1762bbf5638a9e3566893096d8a;p=xonotic%2Fnetradiant.git diff --git a/libs/splines/math_vector.cpp b/libs/splines/math_vector.cpp index 7237de52..572f903e 100644 --- a/libs/splines/math_vector.cpp +++ b/libs/splines/math_vector.cpp @@ -1,143 +1,147 @@ -/* -Copyright (C) 1999-2007 id Software, Inc. and contributors. -For a list of contributors, see the accompanying CONTRIBUTORS file. - -This file is part of GtkRadiant. - -GtkRadiant 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. - -GtkRadiant 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 GtkRadiant; if not, write to the Free Software -Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA -*/ - -#include "math_vector.h" -#include -#include -#include -#include -#include -#include -#include -#include - -#define M_PI 3.14159265358979323846 // matches value in gcc v2 math.h - -#define LERP_DELTA 1e-6 - -idVec3 vec_zero( 0.0f, 0.0f, 0.0f ); - -Bounds boundsZero; - -float idVec3::toYaw( void ) { - float yaw; - - if ( ( y == 0 ) && ( x == 0 ) ) { - yaw = 0; - } else { - yaw = atan2( y, x ) * 180 / M_PI; - if ( yaw < 0 ) { - yaw += 360; - } - } - - return yaw; -} - -float idVec3::toPitch( void ) { - float forward; - float pitch; - - if ( ( x == 0 ) && ( y == 0 ) ) { - if ( z > 0 ) { - pitch = 90; - } else { - pitch = 270; - } - } else { - forward = ( float )idSqrt( x * x + y * y ); - pitch = atan2( z, forward ) * 180 / M_PI; - if ( pitch < 0 ) { - pitch += 360; - } - } - - return pitch; -} - -/* -angles_t idVec3::toAngles( void ) { - float forward; - float yaw; - float pitch; - - if ( ( x == 0 ) && ( y == 0 ) ) { - yaw = 0; - if ( z > 0 ) { - pitch = 90; - } else { - pitch = 270; - } - } else { - yaw = atan2( y, x ) * 180 / M_PI; - if ( yaw < 0 ) { - yaw += 360; - } - - forward = ( float )idSqrt( x * x + y * y ); - pitch = atan2( z, forward ) * 180 / M_PI; - if ( pitch < 0 ) { - pitch += 360; - } - } - - return angles_t( -pitch, yaw, 0 ); -} -*/ - -idVec3 LerpVector( idVec3 &w1, idVec3 &w2, const float t ) { - float omega, cosom, sinom, scale0, scale1; - - cosom = w1 * w2; - if ( ( 1.0 - cosom ) > LERP_DELTA ) { - omega = acos( cosom ); - sinom = sin( omega ); - scale0 = sin( ( 1.0 - t ) * omega ) / sinom; - scale1 = sin( t * omega ) / sinom; - } else { - scale0 = 1.0 - t; - scale1 = t; - } - - return ( w1 * scale0 + w2 * scale1 ); -} - -/* -============= -idVec3::string - -This is just a convenience function -for printing vectors -============= -*/ -char *idVec3::string( void ) { - static int index = 0; - static char str[ 8 ][ 36 ]; - char *s; - - // use an array so that multiple toString's won't collide - s = str[ index ]; - index = (index + 1)&7; - - sprintf( s, "%.2f %.2f %.2f", x, y, z ); - - return s; -} +/* + Copyright (C) 1999-2006 Id Software, Inc. and contributors. + For a list of contributors, see the accompanying CONTRIBUTORS file. + + This file is part of GtkRadiant. + + GtkRadiant 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. + + GtkRadiant 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 GtkRadiant; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "math_vector.h" +#include +#include +#include +#include +#include +#include +#include +#include + +#define M_PI 3.14159265358979323846 // matches value in gcc v2 math.h + +#define LERP_DELTA 1e-6 + +idVec3 vec_zero( 0.0f, 0.0f, 0.0f ); + +Bounds boundsZero; + +float idVec3::toYaw( void ) { + float yaw; + + if ( ( y == 0 ) && ( x == 0 ) ) { + yaw = 0; + } + else { + yaw = atan2( y, x ) * 180 / M_PI; + if ( yaw < 0 ) { + yaw += 360; + } + } + + return yaw; +} + +float idVec3::toPitch( void ) { + float forward; + float pitch; + + if ( ( x == 0 ) && ( y == 0 ) ) { + if ( z > 0 ) { + pitch = 90; + } + else { + pitch = 270; + } + } + else { + forward = ( float )idSqrt( x * x + y * y ); + pitch = atan2( z, forward ) * 180 / M_PI; + if ( pitch < 0 ) { + pitch += 360; + } + } + + return pitch; +} + +/* + angles_t idVec3::toAngles( void ) { + float forward; + float yaw; + float pitch; + + if ( ( x == 0 ) && ( y == 0 ) ) { + yaw = 0; + if ( z > 0 ) { + pitch = 90; + } else { + pitch = 270; + } + } else { + yaw = atan2( y, x ) * 180 / M_PI; + if ( yaw < 0 ) { + yaw += 360; + } + + forward = ( float )idSqrt( x * x + y * y ); + pitch = atan2( z, forward ) * 180 / M_PI; + if ( pitch < 0 ) { + pitch += 360; + } + } + + return angles_t( -pitch, yaw, 0 ); + } + */ + +idVec3 LerpVector( idVec3 &w1, idVec3 &w2, const float t ) { + float omega, cosom, sinom, scale0, scale1; + + cosom = w1 * w2; + if ( ( 1.0 - cosom ) > LERP_DELTA ) { + omega = acos( cosom ); + sinom = sin( omega ); + scale0 = sin( ( 1.0 - t ) * omega ) / sinom; + scale1 = sin( t * omega ) / sinom; + } + else { + scale0 = 1.0 - t; + scale1 = t; + } + + return ( w1 * scale0 + w2 * scale1 ); +} + +/* + ============= + idVec3::string + + This is just a convenience function + for printing vectors + ============= + */ +char *idVec3::string( void ) { + static int index = 0; + static char str[ 8 ][ 36 ]; + char *s; + + // use an array so that multiple toString's won't collide + s = str[ index ]; + index = ( index + 1 ) & 7; + + sprintf( s, "%.2f %.2f %.2f", x, y, z ); + + return s; +}