// setDefault sets Voxels properties to default values.
func (p *Properties) setDefault(values dvid.DataValues, interpolable bool) error {
p.Values = make([]dvid.DataValue, len(values))
copy(p.Values, values)
p.Interpolable = interpolable
dimensions := 3
size := make([]int32, dimensions)
for d := 0; d < dimensions; d++ {
size[d] = DefaultBlockSize
}
var err error
p.BlockSize, err = dvid.NewPoint(size)
if err != nil {
return err
}
p.Resolution.VoxelSize = make(dvid.NdFloat32, dimensions)
for d := 0; d < dimensions; d++ {
p.Resolution.VoxelSize[d] = DefaultRes
}
p.Resolution.VoxelUnits = make(dvid.NdString, dimensions)
for d := 0; d < dimensions; d++ {
p.Resolution.VoxelUnits[d] = DefaultUnits
}
return nil
}
// NdDataSchema returns the metadata in JSON for this Data
func (p *Properties) NdDataMetadata() (string, error) {
var err error
var size, offset dvid.Point
dims := int(p.BlockSize.NumDims())
if p.MinPoint == nil || p.MaxPoint == nil {
zeroPt := make([]int32, dims)
size, err = dvid.NewPoint(zeroPt)
if err != nil {
return "", err
}
offset = size
} else {
size = p.MaxPoint.Sub(p.MinPoint).AddScalar(1)
offset = p.MinPoint
}
var axesName = []string{"X", "Y", "Z", "t", "c"}
var metadata metadataT
metadata.Axes = []axisT{}
for dim := 0; dim < dims; dim++ {
metadata.Axes = append(metadata.Axes, axisT{
Label: axesName[dim],
Resolution: p.Resolution.VoxelSize[dim],
Units: p.Resolution.VoxelUnits[dim],
Size: size.Value(uint8(dim)),
Offset: offset.Value(uint8(dim)),
})
}
metadata.Properties = *p
m, err := json.Marshal(metadata)
if err != nil {
return "", err
}
return string(m), nil
}