libs/agg/agg_trans_perspective.h

30         double sx, shy, w0, shx, sy, w1, tx, ty, w2;
36             shx(0), sy (1), w1(0),
44            shx(v3), sy (v4), w1(v5),
50            shx(m[3]), sy (m[4]), w1(m[5]),
56            shx(a.shx), sy (a.sy ), w1(0),
247                 nom_x(px * m.sx + py * m.shx + m.tx),
298             shx = q[4] - q[2];
316                 sx = shy = w0 = shx = sy = w1 = tx = ty = w2 = 0.0;
326             shx = q[6] - q[0] + v * q[6];
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);
355         w1  = d * (a.w0 *a.shx - a.sx *a.w1);
356         tx  = d * (a.shx*a.ty  - a.sy *a.tx);
358         w2  = d * (a.sx *a.sy  - a.shy*a.shx);
434         shx = 0; sy  = 1; w1 = 0;
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;
448         sy  = a.shy*b.shx + a.sy *b.sy  + a.ty*b.w1;
451         w1  = a.w0 *b.shx + a.w1 *b.sy  + a.w2*b.w1;
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;
465         sy  = a.shy*b.shx + a.sy *b.sy  + a.ty*b.w1;
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;
479         sy  = a.shy*b.shx + a.sy *b.sy  + a.ty*b.w1;
482         w1  = a.w0 *b.shx + a.w1 *b.sy  + a.w2*b.w1;
492         sx  = a.sx *b.sx  + a.shx*b.shy;
493         shx = a.sx *b.shx + a.shx*b.sy;
494         tx  = a.sx *b.tx  + a.shx*b.ty  + a.tx;
496         sy  = a.shy*b.shx + a.sy *b.sy;
499         w1  = a.w0 *b.shx + a.w1 *b.sy;
576         *px = m * (x*sx  + y*shx + tx);
584         *x = tmp * sx  + *y * shx + tx;
592         *x = tmp * sx  + *y * shx;
607         *m++ = shx; *m++ = sy;  *m++ = w1;
615         shx = *m++; sy  = *m++; w1 = *m++;
625         shx = a.shx; sy  = a.sy;  w1 = 0;
634                shx * (ty  * w0 - shy * w2) +
656                is_equal_eps(shx, 0.0, epsilon) &&
671                is_equal_eps(shx, m.shx, epsilon) &&
682         double x = 0.707106781 * sx  + 0.707106781 * shx;
724         *x = std::sqrt(sx  * sx  + shx * shx);