- Offset inter_l = get_point_in_y_direction (left, perpendicular_slope (slope), thick / 2, d);
- Offset inter_r = get_point_in_y_direction (right, perpendicular_slope (slope), thick / 2, d);
- pango_matrix_transform_point (&trans, &inter_l[X_AXIS], &inter_l[Y_AXIS]);
- pango_matrix_transform_point (&trans, &inter_r[X_AXIS], &inter_r[Y_AXIS]);
- Real length = sqrt (((inter_l[X_AXIS] - inter_r[X_AXIS]) * (inter_l[X_AXIS] - inter_r[X_AXIS])) + ((inter_l[Y_AXIS] - inter_r[Y_AXIS]) * (inter_l[Y_AXIS] - inter_r[Y_AXIS])));