Method Encode

physicscompress/physics/encoding.go:23–86

()

var totalbits = 0

func (s *State) Encode() []byte {
	enc := arith.NewEncoder()

	historic := s.Historic().Cubes
	baseline := s.Baseline().Cubes
	current := s.Current().Cubes

	mzeros := mZeros()
	items := []int{}
	for i := range current {
		cube, base := &current[i], &baseline[i]
		if *cube == *base {
			mzeros.Encode(enc, 0)
		} else {
			mzeros.Encode(enc, 1)
			items = append(items, i)
		}
	}

	for _, i := range items {
		cube := &current[i]
		mzeros.Encode(enc, uint(cube.Interacting^1))
	}

	for _, i := range items {
		cube, base := &current[i], &baseline[i]
		v := uint(cube.Largest ^ base.Largest)
		mzeros.Encode(enc, v&1)
		mzeros.Encode(enc, v>>1)
	}

	items6 := Index6(items, len(baseline))
	SortByZ(items6, Delta6(historic, baseline))
	get6 := Extra6(historic, baseline, current)

	max := uint64(0)
	for _, i := range items6 {
		ext := uint64(bit.ZEncode(int64(get6(i))))
		if max < ext {
			max = ext
		}
	}

	if max == 0 {
		mzeros.Encode(enc, 1)
		enc.Close()
		return enc.Bytes()
	}

	nbits := bit.ScanRight(max) + 1
	for i := 0; i < int(nbits); i += 1 {
		mzeros.Encode(enc, 0)
	}
	mzeros.Encode(enc, 1)

	mvalues := mValues(nbits)
	for _, i := range items6 {
		val := uint(bit.ZEncode(int64(get6(i))))