include / vec-

vec-calc.hpp File Reference

Go to the source code of this file.

Functions

double abs (const vec &v)

double norm (const vec &v)

vec normal (const vec &v)

vec rotate (const vec &v, const quat &q)

vec orbit (const vec &v, const quat &q)

Function Documentation

double abs ( const vec & v ) [inline]

return abs
Definition at line 17 of file vec-calc.hpp.
00018 { 00019 #ifdef QVM_DEBUG 00020 double result(std::sqrt(v.x*v.x +v.y*v.y +v.z*v.z)); 00021 if( result < DBL_MIN || !finite(result) ){ 00022 std::cerr << "[WARNING] abs(const vec&) " 00023 << "The abs is numerically ZERO." << std::endl; 00024 } 00025 #endif//QVM_DEBUG 00026 return std::sqrt(v.x*v.x +v.y*v.y +v.z*v.z) +DBL_MIN; 00027 }

double norm ( const vec & v ) [inline]

return norm
Definition at line 31 of file vec-calc.hpp.
00032 { 00033 #ifdef QVM_DEBUG 00034 double result(v.x*v.x +v.y*v.y +v.z*v.z); 00035 if( result < DBL_MIN || !finite(result) ){ 00036 std::cerr << "[WARNING] norm(const vec&) " 00037 << "The norm is numerically ZERO." << std::endl; 00038 } 00039 #endif//QVM_DEBUG 00040 return v.x*v.x +v.y*v.y +v.z*v.z; 00041 }

vec normal ( const vec & v ) [inline]

return the normalized vec
Definition at line 45 of file vec-calc.hpp.
References abs().
00046 { 00047 double abs_v(abs(v)); 00048 return vec( v.x/abs_v, v.y/abs_v, v.z/abs_v ); 00049 }

vec rotate ( const vec & v,

const quat & q

) [inline]

Definition at line 53 of file vec-calc.hpp.
References conj(), im(), and vr2q().
00054 { 00055 //return im( conj(q)*vr2q(v,0.)*q ); 00056 return im( q*vr2q(v,0.)*conj(q) ); 00057 }

vec orbit ( const vec & v,

const quat & q

) [inline]

Definition at line 61 of file vec-calc.hpp.
References conj(), im(), and vr2q().
00062 { 00063 return im( q*vr2q(v,0.)*conj(q) ); 00064 }

Generated on Tue Mar 15 16:02:38 2005 for QVM by

1.4.1


Functions
double	abs (const vec &v)
double	norm (const vec &v)
vec	normal (const vec &v)
vec	rotate (const vec &v, const quat &q)
vec	orbit (const vec &v, const quat &q)