Lines Matching defs:eta1
107 * @param e1x E(eta1) x coordinate of the starting point of the arc
129 double eta1 = start;
132 double cosEta1 = cos(eta1);
133 double sinEta1 = sin(eta1);
139 double eta2 = eta1 + anglePerSegment;
146 double tanDiff2 = tan((eta2 - eta1) / 2);
148 sin(eta2 - eta1) * (sqrt(4 + (3 * tanDiff2 * tanDiff2)) - 1) / 3;
160 eta1 = eta2;
227 double eta1 = atan2((y1p - cy), (x1p - cx));
229 double sweep = (eta1 - eta0);
