mirror/Aquaria
1
0
Fork 0
mirror of https://github.com/AquariaOSE/Aquaria.git synced 2025-10-04 13:27:14 +00:00
Code Issues Releases Wiki Activity

initial commit. This is icculus version 5542b94cae02a6333845854bbbd1abe0a259f1a4

Browse source
This commit is contained in:
fgenesis 2011-08-03 22:05:33 +02:00
commit 3096eaf5e2
2519 changed files with 816064 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

98
BBGE/MathFunctions.h Normal file
View file

@ -0,0 +1,98 @@
/*
Copyright (C) 2007, 2010 - Bit-Blot
This file is part of Aquaria.
Aquaria 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.
*/
#include "Base.h"
#ifdef __GNUC__
#define UNUSED __attribute__((unused)) // Avoid "unused function" warnings
#else
#define UNUSED //nothing
#endif
namespace MathFunctions
{
UNUSED static void calculateAngleBetweenVectorsInDegrees(const Vector &vector1, const Vector &vector2, float &solutionAngle)
{
Vector dist = vector1 - vector2;
// 0 is down
// 90 is right
// 180 is up
// 270 is left
// 360 is down
solutionAngle = atan2f(dist.y, fabsf(dist.x));
solutionAngle = (solutionAngle/PI)*180;
if (dist.x < 0)
solutionAngle = 180-solutionAngle;
solutionAngle += 90;
}
UNUSED static float toRadians(float rot)
{
return PI-(rot*PI)/180.0f;
}
UNUSED static float getAngleToVector(const Vector &addVec, float offsetAngle = 0)
{
float angle=0;
MathFunctions::calculateAngleBetweenVectorsInDegrees(Vector(0,0,0), addVec, angle);
angle = 180-(360-angle);
angle += offsetAngle;
return angle;
}
UNUSED static void calculateAngleBetweenVectorsInRadians(Vector vector1, Vector vector2, float &solutionAngle)
{
Vector dist = vector1 - vector2;
solutionAngle = atan2f(dist.y, fabsf(dist.x));
if (dist.x < 0)
solutionAngle = PI - solutionAngle;
/*
solutionAngle = -solutionAngle;
solutionAngle += PI/2;
*/
/*
if (dist.x<0)
solutionAngle = PI - solutionAngle;
*/
/*
vector1.normalize2D();
vector2.normalize2D();
solutionAngle = cosf((vector1.x*vector2.x + vector2.y*vector2.y));
*/
//solutionAngle = acosf(vector1.dot(vector2) / (sqrt(vector1.dot(vector1) * vector2.dot(vector2))));
//solutionAngle = acosf(vector1.dot(vector2) / (vector1.getLength2D() * vector2.getLength2D()));
/*
solutionAngle = (solutionAngle /PI)*180;
if (dist.x < 0)
solutionAngle = 180-solutionAngle;
*/
}
};