libs/agg/agg_trans_perspective.h

30         double sx, shy, w0, shx, sy, w1, tx, ty, w2;
37             tx (0), ty (0), w2(1) {}
45            tx (v6), ty (v7), w2(v8) {}
51            tx (m[6]), ty (m[7]), w2(m[8]) {}
57            tx (a.tx ), ty (a.ty ), w2(1) {}
247                 nom_x(px * m.sx + py * m.shx + m.tx),
301             tx  = q[0];
316                 sx = shy = w0 = shx = sy = w1 = tx = ty = w2 = 0.0;
329             tx  = q[0];
342         double d  = sx  * d0 + shx * d1 + tx * d2;
345             sx = shy = w0 = shx = sy = w1 = tx = ty = w2 = 0.0;
353         shx = d * (a.w1 *a.tx  - a.shx*a.w2);
354         sy  = d * (a.sx *a.w2  - a.w0 *a.tx);
356         tx  = d * (a.shx*a.ty  - a.sy *a.tx);
357         ty  = d * (a.shy*a.tx  - a.sx *a.ty);
435         tx  = 0; ty  = 0; w2 = 1;
444         sx  = a.sx *b.sx  + a.shx*b.shy + a.tx*b.w0;
445         shx = a.sx *b.shx + a.shx*b.sy  + a.tx*b.w1;
446         tx  = a.sx *b.tx  + a.shx*b.ty  + a.tx*b.w2;
449         ty  = a.shy*b.tx  + a.sy *b.ty  + a.ty*b.w2;
452         w2  = a.w0 *b.tx  + a.w1 *b.ty  + a.w2*b.w2;
461         sx  = a.sx *b.sx  + a.shx*b.shy + a.tx*b.w0;
462         shx = a.sx *b.shx + a.shx*b.sy  + a.tx*b.w1;
463         tx  = a.sx *b.tx  + a.shx*b.ty  + a.tx*b.w2;
466         ty  = a.shy*b.tx  + a.sy *b.ty  + a.ty*b.w2;
475         sx  = a.sx *b.sx  + a.shx*b.shy + a.tx*b.w0;
476         shx = a.sx *b.shx + a.shx*b.sy  + a.tx*b.w1;
477         tx  = a.sx *b.tx  + a.shx*b.ty  + a.tx*b.w2;
480         ty  = a.shy*b.tx  + a.sy *b.ty  + a.ty*b.w2;
483         w2  = a.w0 *b.tx  + a.w1 *b.ty  + a.w2*b.w2;
494         tx  = a.sx *b.tx  + a.shx*b.ty  + a.tx;
497         ty  = a.shy*b.tx  + a.sy *b.ty  + a.ty;
500         w2  = a.w0 *b.tx  + a.w1 *b.ty  + a.w2;
544         tx += x;
576         *px = m * (x*sx  + y*shx + tx);
584         *x = tmp * sx  + *y * shx + tx;
608         *m++ = tx;  *m++ = ty;  *m++ = w2;
616         tx  = *m++; ty  = *m++; w2 = *m++;
626         tx  = a.tx;  ty  = a.ty;  w2 = 1;
635                tx  * (shy * w1 - sy  * w0);
659                is_equal_eps(tx,  0.0, epsilon) &&
674                is_equal_eps(tx,  m.tx,  epsilon) &&
702         *dx = tx;