Commit 67969a04 authored by Laurent Belcour's avatar Laurent Belcour

Adding rotations to compute Half vector transformations

parent f8d6d9d1
......@@ -79,11 +79,36 @@ class params
half[1] = sin(invec[0])*sin(invec[1]);
half[2] = cos(invec[0]);
outvec[0] = sin(invec[2]);
outvec[1] = 0;
outvec[2] = cos(invec[2]);
rotate_binormal(outvec, invec[0]);
rotate_normal(outvec, invec[1]);
// \todo what is the out vector ?
//outvec[3] = ;
//outvec[4] = ;
//outvec[5] = ;
break;
// 4D Parametrization
case params::RUSIN_TH_PH_TD_PD:
half[0] = sin(invec[0])*cos(invec[1]);
half[1] = sin(invec[0])*sin(invec[1]);
half[2] = cos(invec[0]);
outvec[0] = sin(invec[2])*cos(invec[3]);
outvec[1] = sin(invec[2])*sin(invec[3]);
outvec[2] = cos(invec[2]);
rotate_binormal(outvec, invec[0]);
rotate_normal(outvec, invec[1]);
// \todo what is the out vector ?
//outvec[3] = ;
//outvec[4] = ;
//outvec[5] = ;
break;
......@@ -176,27 +201,25 @@ class params
}
}
//! \brief rotate a cartesian vector with respec to another of
//! \brief rotate a cartesian vector with respect to the normal of
//! \param theta degrees.
static void rotate(double* vec, double* ref, double theta)
static void rotate_normal(double* vec, double theta)
{
const double cost = cos(theta);
const double sint = sin(theta);
/*
vec[0] = ;
vec[1] = ;
vec[2] = ;
*/
vec[0] = cost * vec[0] - sint * vec[1];
vec[1] = sint * vec[0] + cost * vec[1];
}
//! \brief rotate a cartesian vector with respect to the normal of
//! \brief rotate a cartesian vector with respect to the bi-normal of
//! \param theta degrees.
static void rotate(double* vec, double theta)
static void rotate_binormal(double* vec, double theta)
{
const double cost = cos(theta);
const double sint = sin(theta);
vec[0] = cost * vec[0] - sint * vec[1];
vec[1] = sint * vec[0] + cost * vec[1];
vec[0] = cost * vec[0] - sint * vec[2];
vec[2] = sint * vec[0] + cost * vec[2];
}
};
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