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Diffstat (limited to 'filter-hamilton/hamilton-tools.cpp')
-rw-r--r-- | filter-hamilton/hamilton-tools.cpp | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/filter-hamilton/hamilton-tools.cpp b/filter-hamilton/hamilton-tools.cpp deleted file mode 100644 index e18082a8..00000000 --- a/filter-hamilton/hamilton-tools.cpp +++ /dev/null @@ -1,135 +0,0 @@ -#include "hamilton-tools.h" -#include <cmath> - -double VectorLength(const tVector v) -{ - return(sqrt(v.v[0]*v.v[0] + v.v[1]*v.v[1] + v.v[2]*v.v[2])); -} - -double sqr(const double v) { return(v*v); } - -double VectorDistance(const double v1[], const tVector v2) -{ - return(sqrt(sqr(v2.v[0]-v1[0])+sqr(v2.v[1]-v1[1])+sqr(v2.v[2]-v1[2]))); -} - -tVector Lerp(const tVector s, const double d[], const double alpha) -{ - tVector V; - V.v[0] = s.v[0] + (d[0] - s.v[0]) * alpha; - V.v[1] = s.v[1] + (d[1] - s.v[1]) * alpha; - V.v[2] = s.v[2] + (d[2] - s.v[2]) * alpha; - return(V); -} - -tQuat QuatFromAngleAxe(const double angle, const tVector axe) -{ - double a = TO_RAD * 0.5 * angle; - double d = sin(a) / VectorLength(axe); - return ( tQuat ( - axe.v[0] * d, - axe.v[1] * d, - axe.v[2] * d, - cos(a) - ) - ); -} - -tQuat QuatMultiply(const tQuat qL, const tQuat qR) -{ - tQuat Q; - Q.x = qL.w*qR.x + qL.x*qR.w + qL.y*qR.z - qL.z*qR.y; - Q.y = qL.w*qR.y + qL.y*qR.w + qL.z*qR.x - qL.x*qR.z; - Q.z = qL.w*qR.z + qL.z*qR.w + qL.x*qR.y - qL.y*qR.x; - Q.w = qL.w*qR.w - qL.x*qR.x - qL.y*qR.y - qL.z*qR.z; - return(Q); -} - -double AngleBetween(const tQuat S, const tQuat D) -{ - return( TO_DEG * 2*acos(fabs(S.x*D.x + S.y*D.y + S.z*D.z + S.w*D.w)) ); -} - -tQuat QuatFromYPR(const double YPR[]) -{ - tQuat Q, Qp, Qy; - Q = QuatFromAngleAxe( -YPR[2], {0, 0, 1} ); //Roll, Z axe - Qp = QuatFromAngleAxe( -YPR[1], {1, 0, 0} ); //Pitch, X axe - Qy = QuatFromAngleAxe( -YPR[0], {0, 1, 0} ); //Yaw, Y axe - - Q = QuatMultiply(Qp, Q); - return(QuatMultiply(Qy, Q)); -} - -void Normalize(tQuat Q) -{ - double m = sqrt(Q.x*Q.x + Q.y*Q.y + Q.z*Q.z + Q.w*Q.w); - if (m > EPSILON) - { - m = 1 / m; - Q.x = Q.x * m; - Q.y = Q.y * m; - Q.z = Q.z * m; - Q.w = Q.w * m; - } - else Q = tQuat(0, 0, 0, 1); -} - -tQuat Slerp(const tQuat S, const tQuat D, const double alpha) -{ - // calc cosine of half angle - double cosin = S.x*D.x + S.y*D.y + S.z*D.z + S.w*D.w; - - // select nearest rotation direction - tQuat Q; - if (cosin < 0) - { - cosin = - cosin; - Q.x = - D.x; - Q.y = - D.y; - Q.z = - D.z; - Q.w = - D.w; - } - else Q = D; - - // calculate coefficients - double scale0, scale1; - if ((1.0 - cosin) > EPSILON) - { - double omega = acos(cosin); - double sinus = 1 / sin(omega); - scale0 = sin((1.0 - alpha) * omega) * sinus; - scale1 = sin(alpha * omega)* sinus; - } - else - { - scale0 = 1.0 - alpha; - scale1 = alpha; - } - - Q.x = scale0 * S.x + scale1 * Q.x; - Q.y = scale0 * S.y + scale1 * Q.y; - Q.z = scale0 * S.z + scale1 * Q.z; - Q.w = scale0 * S.w + scale1 * Q.w; - - Normalize(Q); - - return( Q ); -} - -void QuatToYPR(const tQuat Q, double YPR[]) -{ - const double xx = Q.x * Q.x; - const double xy = Q.x * Q.y; - const double xz = Q.x * Q.z; - const double xw = Q.x * Q.w; - const double yy = Q.y * Q.y; - const double yz = Q.y * Q.z; - const double yw = Q.y * Q.w; - const double zz = Q.z * Q.z; - const double zw = Q.z * Q.w; - - YPR[0] = TO_DEG * ( -atan2( 2 * ( xz + yw ), 1 - 2 * ( xx + yy ) )); - YPR[1] = TO_DEG * ( asin ( 2 * ( yz - xw ) )); - YPR[2] = TO_DEG * ( -atan2( 2 * ( xy + zw ), 1 - 2 * ( xx + zz ) )); -} |