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This commit is contained in:
Ley0k 2016-08-13 18:32:13 +02:00
parent db1cfb675c
commit 3436b47544
43 changed files with 1249 additions and 123 deletions
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45
code/globalcpp/vector.h
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@ -39,6 +39,23 @@ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#define VECTOR_FABS fabs
#endif
static float vrsqrt( float number )
{
union {
float f;
int i;
} t;
float x2, y;
const float threehalfs = 1.5F;
x2 = number * 0.5F;
t.f = number;
t.i = 0x5f3759df - ( t.i >> 1 ); // what the fuck?
y = t.f;
y = y * ( threehalfs - ( x2 * y * y ) ); // 1st iteration
return y;
}
class Vector
{
public:
@ -101,9 +118,11 @@ public:
const Vector & CrossProduct( vec3_t a, const Vector &b );
const Vector & CrossProduct( const Vector &a, vec3_t b );
float length( void ) const;
float lengthfast( void ) const;
float lengthSquared( void ) const;
float lengthXY( void ) const;
float normalize( void );
void normalizefast( void );
void EulerNormalize( void );
void EulerNormalize360( void );
static Vector Clamp( Vector &value, const Vector &min, const Vector &max );
@ -518,6 +537,11 @@ inline float Vector::length( void ) const
return sqrt( lengthSquared() );
}
inline float Vector::lengthfast( void ) const
{
return vrsqrt( lengthSquared() );
}
//----------------------------------------------------------------
// Name: lengthXY
// Class: Vector
@ -560,6 +584,27 @@ inline float Vector::normalize( void )
return length;
}
//----------------------------------------------------------------
// Name: normalizefast
// Class: Vector
//
// Description: fast version of normalize
//
// Parameters: None
//
// Returns: float - length of the vector before the function
//----------------------------------------------------------------
inline void Vector::normalizefast( void )
{
float ilength;
ilength = this->lengthfast();
x *= ilength;
y *= ilength;
z *= ilength;
}
//----------------------------------------------------------------
// Name: EulerNormalize
// Class: Vector