hpgs/lib/hpgsmatrix.c

41   m->myx = m->mxy = m->dy = m->dx = 0.0;
54   double y = m->dy + m->myx * p->x + m->myy * p->y;
70   double det = m->mxx * m->myy - m->mxy * m->myx;
73   res->y = (m->mxx * y0 - m->myx * x0)/det;
145   double y = m->myx * p->x + m->myy * p->y;
164   double det = m->mxx * m->myy - m->mxy * m->myx;
167   res->y = (m->mxx * y0 - m->myx * x0)/det;
182   // | dy myx myy |   | Dy Myx Myy |   | dy+Dx*myx+Dy*myy myx*Mxx+myy*Myx myx*Mxy+myy*Myy |
187   r1 = a->dy+b->dx*a->myx+b->dy*a->myy;
192   r0 = a->mxx*b->mxx+a->mxy*b->myx;
194   r2 = a->myx*b->mxx+a->myy*b->myx;
195   r3 = a->myx*b->mxy+a->myy*b->myy;
199   res->myx = r2;
210   double det = m->mxx * m->myy - m->mxy * m->myx;
217   res->myx = -m->myx/det;
222   res->dy = x0 * res->myx + y0 * res->myy;