本文整理汇总了Golang中github.com/janelia-flyem/dvid/dvid.Point类的典型用法代码示例。如果您正苦于以下问题：Golang Point类的具体用法？Golang Point怎么用？Golang Point使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了Point类的5个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: NdDataMetadata
// 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
}示例2: GetGoogleSubvolGeom
// GetGoogleSubvolGeom returns a google-specific voxel spec, which includes how the data is positioned relative to
// scaled volume boundaries. Not that the size parameter is the desired size and not what is required to fit
// within a scaled volume.
func (d *Data) GetGoogleSubvolGeom(scaling Scaling, shape dvid.DataShape, offset dvid.Point3d, size dvid.Point) (*GoogleSubvolGeom, error) {
gsg := new(GoogleSubvolGeom)
if err := gsg.shape.FromShape(shape); err != nil {
return nil, err
}
gsg.offset = offset
// If 2d plane, convert combination of plane and size into 3d size.
if size.NumDims() == 2 {
size2d := size.(dvid.Point2d)
sizeWant, err := dvid.GetPoint3dFrom2d(shape, size2d, 1)
if err != nil {
return nil, err
}
gsg.sizeWant = sizeWant
} else {
var ok bool
gsg.sizeWant, ok = size.(dvid.Point3d)
if !ok {
return nil, fmt.Errorf("Can't convert %v to dvid.Point3d", size)
}
}
// Determine which geometry is appropriate given the scaling and the shape/orientation
tileSpec, err := GetGSpec(scaling, shape)
if err != nil {
return nil, err
}
geomIndex, found := d.GeomMap[*tileSpec]
if !found {
return nil, fmt.Errorf("Could not find scaled volume in %q for %s with scaling %d", d.DataName(), shape, scaling)
}
geom := d.Scales[geomIndex]
gsg.gi = geomIndex
gsg.channelCount = geom.ChannelCount
gsg.channelType = geom.ChannelType
// Get the # bytes for each pixel
switch geom.ChannelType {
case "UINT8":
gsg.bytesPerVoxel = 1
case "FLOAT":
gsg.bytesPerVoxel = 4
case "UINT64":
gsg.bytesPerVoxel = 8
default:
return nil, fmt.Errorf("Unknown volume channel type in %s: %s", d.DataName(), geom.ChannelType)
}
// Check if the requested area is completely outside the volume.
volumeSize := geom.VolumeSize
if offset[0] >= volumeSize[0] || offset[1] >= volumeSize[1] || offset[2] >= volumeSize[2] {
gsg.outside = true
return gsg, nil
}
// Check if the requested shape is on the edge and adjust size.
adjSize := gsg.sizeWant
maxpt := offset.Add(adjSize)
for i := uint8(0); i < 3; i++ {
if maxpt.Value(i) > volumeSize[i] {
gsg.edge = true
adjSize[i] = volumeSize[i] - offset[i]
}
}
gsg.size = adjSize
return gsg, nil
}示例3: readScaledBlock
func (v *Voxels) readScaledBlock(block *storage.TKeyValue, blockSize dvid.Point, attenuation uint8) error {
if blockSize.NumDims() > 3 {
return fmt.Errorf("DVID voxel blocks currently only supports up to 3d, not 4+ dimensions")
}
blockBeg, dataBeg, dataEnd, err := v.ComputeTransform(block, blockSize)
if err != nil {
return err
}
data := v.Data()
bytesPerVoxel := int64(v.Values().BytesPerElement())
if bytesPerVoxel != 1 {
return fmt.Errorf("Can only scale non-ROI blocks with 1 byte voxels")
}
// Compute the strides (in bytes)
bX := int64(blockSize.Value(0)) * bytesPerVoxel
bY := int64(blockSize.Value(1)) * bX
dX := int64(v.Stride())
// Get the block beginning coordinates.
blockBegX := int64(blockBeg.Value(0))
blockBegY := int64(blockBeg.Value(1))
blockBegZ := int64(blockBeg.Value(2))
// Do the transfers depending on shape of the external voxels.
switch {
case v.DataShape().Equals(dvid.XY):
blockI := blockBegZ*bY + blockBegY*bX + blockBegX*bytesPerVoxel
dataI := int64(dataBeg.Value(1))*dX + int64(dataBeg.Value(0))*bytesPerVoxel
for y := dataBeg.Value(1); y <= dataEnd.Value(1); y++ {
for x := int64(dataBeg.Value(0)); x <= int64(dataEnd.Value(0)); x++ {
data[dataI+x] = (block.V[blockI+x] >> attenuation)
}
blockI += bX
dataI += dX
}
case v.DataShape().Equals(dvid.XZ):
blockI := blockBegZ*bY + blockBegY*bX + blockBegX*bytesPerVoxel
dataI := int64(dataBeg.Value(2))*dX + int64(dataBeg.Value(0))*bytesPerVoxel
for y := dataBeg.Value(2); y <= dataEnd.Value(2); y++ {
for x := int64(dataBeg.Value(0)); x <= int64(dataEnd.Value(0)); x++ {
data[dataI+x] = (block.V[blockI+x] >> attenuation)
}
blockI += bY
dataI += dX
}
case v.DataShape().Equals(dvid.YZ):
bz := blockBegZ
for y := int64(dataBeg.Value(2)); y <= int64(dataEnd.Value(2)); y++ {
blockI := blockBegZ*bY + blockBegY*bX + blockBegX*bytesPerVoxel
dataI := y*dX + int64(dataBeg.Value(1))*bytesPerVoxel
for x := dataBeg.Value(1); x <= dataEnd.Value(1); x++ {
data[dataI] = (block.V[blockI] >> attenuation)
blockI += bX
dataI += bytesPerVoxel
}
bz++
}
case v.DataShape().ShapeDimensions() == 2:
// TODO: General code for handling 2d ExtData in n-d space.
return fmt.Errorf("DVID currently does not support 2d in n-d space.")
case v.DataShape().Equals(dvid.Vol3d):
blockOffset := blockBegX * bytesPerVoxel
dX := int64(v.Size().Value(0)) * bytesPerVoxel
dY := int64(v.Size().Value(1)) * dX
dataOffset := int64(dataBeg.Value(0)) * bytesPerVoxel
blockZ := blockBegZ
for dataZ := dataBeg.Value(2); dataZ <= dataEnd.Value(2); dataZ++ {
blockY := blockBegY
for dataY := dataBeg.Value(1); dataY <= dataEnd.Value(1); dataY++ {
blockI := blockZ*bY + blockY*bX + blockOffset
dataI := int64(dataZ)*dY + int64(dataY)*dX + dataOffset
for x := int64(dataBeg.Value(0)); x <= int64(dataEnd.Value(0)); x++ {
data[dataI+x] = (block.V[blockI+x] >> attenuation)
}
blockY++
}
blockZ++
}
default:
return fmt.Errorf("Cannot readScaledBlock() unsupported voxels data shape %s", v.DataShape())
}
return nil
}示例4: writeBlock
func (v *Voxels) writeBlock(block *storage.TKeyValue, blockSize dvid.Point) error {
if blockSize.NumDims() > 3 {
return fmt.Errorf("DVID voxel blocks currently only supports up to 3d, not 4+ dimensions")
}
blockBeg, dataBeg, dataEnd, err := v.ComputeTransform(block, blockSize)
if err != nil {
return err
}
data := v.Data()
bytesPerVoxel := int64(v.Values().BytesPerElement())
// Compute the strides (in bytes)
bX := int64(blockSize.Value(0)) * bytesPerVoxel
bY := int64(blockSize.Value(1)) * bX
dX := int64(v.Stride())
blockBegX := int64(blockBeg.Value(0))
blockBegY := int64(blockBeg.Value(1))
blockBegZ := int64(blockBeg.Value(2))
// Do the transfers depending on shape of the external voxels.
switch {
case v.DataShape().Equals(dvid.XY):
dataI := int64(dataBeg.Value(1))*dX + int64(dataBeg.Value(0))*bytesPerVoxel
blockI := blockBegZ*bY + blockBegY*bX + blockBegX*bytesPerVoxel
bytes := int64(dataEnd.Value(0)-dataBeg.Value(0)+1) * bytesPerVoxel
for y := dataBeg.Value(1); y <= dataEnd.Value(1); y++ {
copy(block.V[blockI:blockI+bytes], data[dataI:dataI+bytes])
blockI += bX
dataI += dX
}
case v.DataShape().Equals(dvid.XZ):
dataI := int64(dataBeg.Value(2))*dX + int64(dataBeg.Value(0))*bytesPerVoxel
blockI := blockBegZ*bY + blockBegY*bX + blockBegX*bytesPerVoxel
bytes := int64(dataEnd.Value(0)-dataBeg.Value(0)+1) * bytesPerVoxel
for y := dataBeg.Value(2); y <= dataEnd.Value(2); y++ {
copy(block.V[blockI:blockI+bytes], data[dataI:dataI+bytes])
blockI += bY
dataI += dX
}
case v.DataShape().Equals(dvid.YZ):
bz := blockBegZ
for y := int64(dataBeg.Value(2)); y <= int64(dataEnd.Value(2)); y++ {
dataI := y*dX + int64(dataBeg.Value(1))*bytesPerVoxel
blockI := bz*bY + blockBegY*bX + blockBegX*bytesPerVoxel
for x := dataBeg.Value(1); x <= dataEnd.Value(1); x++ {
copy(block.V[blockI:blockI+bytesPerVoxel], data[dataI:dataI+bytesPerVoxel])
blockI += bX
dataI += bytesPerVoxel
}
bz++
}
case v.DataShape().ShapeDimensions() == 2:
// TODO: General code for handling 2d ExtData in n-d space.
return fmt.Errorf("DVID currently does not support 2d in n-d space.")
case v.DataShape().Equals(dvid.Vol3d):
blockOffset := blockBegX * bytesPerVoxel
dX := int64(v.Size().Value(0)) * bytesPerVoxel
dY := int64(v.Size().Value(1)) * dX
dataOffset := int64(dataBeg.Value(0)) * bytesPerVoxel
bytes := int64(dataEnd.Value(0)-dataBeg.Value(0)+1) * bytesPerVoxel
blockZ := blockBegZ
for dataZ := int64(dataBeg.Value(2)); dataZ <= int64(dataEnd.Value(2)); dataZ++ {
blockY := blockBegY
for dataY := int64(dataBeg.Value(1)); dataY <= int64(dataEnd.Value(1)); dataY++ {
dataI := dataZ*dY + dataY*dX + dataOffset
blockI := blockZ*bY + blockY*bX + blockOffset
copy(block.V[blockI:blockI+bytes], data[dataI:dataI+bytes])
blockY++
}
blockZ++
}
default:
return fmt.Errorf("Cannot writeBlock() unsupported voxels data shape %s", v.DataShape())
}
return nil
}示例5: readMappedBlock
func (v *Labels) readMappedBlock(block *storage.TKeyValue, blockSize dvid.Point, m *labels.Mapping) error {
if blockSize.NumDims() > 3 {
return fmt.Errorf("DVID voxel blocks currently only supports up to 3d, not 4+ dimensions")
}
blockBeg, dataBeg, dataEnd, err := v.ComputeTransform(block, blockSize)
if err != nil {
return err
}
data := v.Data()
// Compute the strides (in bytes)
bX := int64(blockSize.Value(0)) * 8
bY := int64(blockSize.Value(1)) * bX
dX := int64(v.Stride())
blockBegX := int64(blockBeg.Value(0))
blockBegY := int64(blockBeg.Value(1))
blockBegZ := int64(blockBeg.Value(2))
// Do the transfers depending on shape of the external voxels.
switch {
case v.DataShape().Equals(dvid.XY):
dataI := int64(dataBeg.Value(1))*dX + int64(dataBeg.Value(0))*8
blockI := blockBegZ*bY + blockBegY*bX + blockBegX*8
for y := int64(dataBeg.Value(1)); y <= int64(dataEnd.Value(1)); y++ {
bI := blockI
dI := dataI
for x := dataBeg.Value(0); x <= dataEnd.Value(0); x++ {
orig := binary.LittleEndian.Uint64(block.V[bI : bI+8])
mapped, found := m.FinalLabel(orig)
if found {
binary.LittleEndian.PutUint64(data[dI:dI+8], mapped)
} else {
copy(data[dI:dI+8], block.V[bI:bI+8])
}
bI += 8
dI += 8
}
blockI += bX
dataI += dX
}
case v.DataShape().Equals(dvid.XZ):
dataI := int64(dataBeg.Value(2))*dX + int64(dataBeg.Value(0))*8
blockI := blockBegZ*bY + blockBegY*bX + blockBegX*8
for y := int64(dataBeg.Value(2)); y <= int64(dataEnd.Value(2)); y++ {
bI := blockI
dI := dataI
for x := dataBeg.Value(0); x <= dataEnd.Value(0); x++ {
orig := binary.LittleEndian.Uint64(block.V[bI : bI+8])
mapped, found := m.FinalLabel(orig)
if found {
binary.LittleEndian.PutUint64(data[dI:dI+8], mapped)
} else {
copy(data[dI:dI+8], block.V[bI:bI+8])
}
bI += 8
dI += 8
}
blockI += bY
dataI += dX
}
case v.DataShape().Equals(dvid.YZ):
bz := blockBegZ
for y := int64(dataBeg.Value(2)); y <= int64(dataEnd.Value(2)); y++ {
dataI := y*dX + int64(dataBeg.Value(1))*8
blockI := bz*bY + blockBegY*bX + blockBegX*8
for x := dataBeg.Value(1); x <= dataEnd.Value(1); x++ {
orig := binary.LittleEndian.Uint64(block.V[blockI : blockI+8])
mapped, found := m.FinalLabel(orig)
if found {
binary.LittleEndian.PutUint64(data[dataI:dataI+8], mapped)
} else {
copy(data[dataI:dataI+8], block.V[blockI:blockI+8])
}
blockI += bX
dataI += 8
}
bz++
}
case v.DataShape().ShapeDimensions() == 2:
// TODO: General code for handling 2d ExtData in n-d space.
return fmt.Errorf("DVID currently does not support 2d in n-d space.")
case v.DataShape().Equals(dvid.Vol3d):
blockOffset := blockBegX * 8
dX := int64(v.Size().Value(0)) * 8
dY := int64(v.Size().Value(1)) * dX
dataOffset := int64(dataBeg.Value(0)) * 8
blockZ := blockBegZ
for dataZ := int64(dataBeg.Value(2)); dataZ <= int64(dataEnd.Value(2)); dataZ++ {
blockY := blockBegY
for dataY := int64(dataBeg.Value(1)); dataY <= int64(dataEnd.Value(1)); dataY++ {
bI := blockZ*bY + blockY*bX + blockOffset
dI := dataZ*dY + dataY*dX + dataOffset
for x := dataBeg.Value(0); x <= dataEnd.Value(0); x++ {
orig := binary.LittleEndian.Uint64(block.V[bI : bI+8])
//.........这里部分代码省略.........