43 lines
1.3 KiB
C
43 lines
1.3 KiB
C
/*
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OpenCS Project
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Copyright (C) 2016, 2017 Marco "eukara" Hladik
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#define MATH_PI 3.1415926
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float Math_LerpAngle( float fStart, float fEnd, float fAmount ) {
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float shortest_angle = ( ( ( ( fEnd - fStart ) % 360 ) + 540 ) % 360 ) - 180;
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return shortest_angle * fAmount;
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}
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float Math_Lerp( float fA, float fB, float fPercent ) {
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return ( fA * ( 1 - fPercent ) ) + ( fB * fPercent );
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}
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float Math_FixDelta( float fDelta ) {
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if ( fDelta >= 180 ) {
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fDelta -= 360;
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} else if ( fDelta <= -180 ) {
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fDelta += 360;
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}
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return fDelta;
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}
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float Math_CRandom( void ) {
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return 2 * ( random() - 0.5 );
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}
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