const uint32_t c = UINT_RGBA_CHANGE_A(base, a);
const framepos_t f = b->frame + (l * (fpb / (double)divisions));
if (f > leftmost_frame) {
const uint32_t c = UINT_RGBA_CHANGE_A(base, a);
const framepos_t f = b->frame + (l * (fpb / (double)divisions));
if (f > leftmost_frame) {