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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| package draco | ||
|
|
||
| // #include "packaged/include/c_api.h" | ||
| import "C" | ||
| import ( | ||
| "fmt" | ||
| "reflect" | ||
| "runtime" | ||
| "unsafe" | ||
| ) | ||
|
|
||
| type PointCloud struct { | ||
| ref *C.draco_point_cloud | ||
| } | ||
|
|
||
| func (pc *PointCloud) free() { | ||
| if pc.ref != nil { | ||
| C.dracoPointCloudRelease(pc.ref) | ||
| } | ||
| } | ||
|
|
||
| func NewPointCloud() *PointCloud { | ||
| pc := &PointCloud{C.dracoNewPointCloud()} | ||
| runtime.SetFinalizer(pc, (*PointCloud).free) | ||
| return pc | ||
| } | ||
|
|
||
| func (pc *PointCloud) NumPoints() uint32 { | ||
| return uint32(C.dracoPointCloudNumPoints(pc.ref)) | ||
| } | ||
|
|
||
| func (pc *PointCloud) NumAttrs() int32 { | ||
| return int32(C.dracoPointCloudNumAttrs(pc.ref)) | ||
| } | ||
|
|
||
| func (pc *PointCloud) Attr(i int32) *PointAttr { | ||
| attr := C.dracoPointCloudGetAttribute(pc.ref, C.int32_t(i)) | ||
| if attr == nil { | ||
| return nil | ||
| } | ||
| return &PointAttr{ref: attr} | ||
| } | ||
|
|
||
| func (pc *PointCloud) AttrByUniqueID(id uint32) *PointAttr { | ||
| attr := C.dracoPointCloudGetAttributeByUniqueId(pc.ref, C.uint32_t(id)) | ||
| if attr == nil { | ||
| return nil | ||
| } | ||
| return &PointAttr{ref: attr} | ||
| } | ||
|
|
||
| func (pc *PointCloud) NamedAttributeID(gt GeometryType) int32 { | ||
| return int32(C.dracoPointCloudGetNamedAttributeId(pc.ref, C.draco_geometry_type(gt))) | ||
| } | ||
|
|
||
| func (pc *PointCloud) AttrData(pa *PointAttr, buffer interface{}) (interface{}, bool) { | ||
| var dt DataType | ||
| n := pc.NumPoints() * uint32(pa.NumComponents()) | ||
| if buffer == nil { | ||
| dt = pa.DataType() | ||
| buffer = reflect.MakeSlice(reflect.SliceOf(dt.goType()), int(n), int(n)).Interface() | ||
| } else { | ||
| v := reflect.ValueOf(buffer) | ||
| if v.IsNil() { | ||
| buffer = reflect.MakeSlice(reflect.SliceOf(dt.goType()), int(n), int(n)).Interface() | ||
| } | ||
| if v.Kind() != reflect.Slice { | ||
| panic(fmt.Sprintf("draco-go: expecting a slice but got %s", v.Kind())) | ||
| } | ||
| l := v.Len() | ||
| switch buffer.(type) { | ||
| case []int8: | ||
| dt = DT_INT8 | ||
| case []uint8: | ||
| dt = DT_UINT8 | ||
| case []int16: | ||
| dt = DT_INT16 | ||
| case []uint16: | ||
| dt = DT_UINT16 | ||
| case []int32: | ||
| dt = DT_INT32 | ||
| case []uint32: | ||
| dt = DT_UINT32 | ||
| case []int64: | ||
| dt = DT_INT64 | ||
| case []uint64: | ||
| dt = DT_UINT64 | ||
| case []float32: | ||
| dt = DT_FLOAT32 | ||
| case []float64: | ||
| dt = DT_FLOAT64 | ||
| default: | ||
| panic("draco-go: unsupported data type") | ||
| } | ||
| if l < int(n) { | ||
| tmp := reflect.MakeSlice(reflect.SliceOf(dt.goType()), int(n)-l, int(n)-l).Interface() | ||
| buffer = reflect.AppendSlice(reflect.ValueOf(buffer), reflect.ValueOf(tmp)).Interface() | ||
| } | ||
| } | ||
| v := reflect.ValueOf(buffer).Index(0) | ||
| size := n * dt.Size() | ||
| ok := C.dracoPointCloudGetAttributeData(pc.ref, pa.ref, C.draco_data_type(dt), C.size_t(size), unsafe.Pointer(v.UnsafeAddr())) | ||
| return buffer, bool(ok) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,32 +1,32 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "io/ioutil" | ||
| "log" | ||
|
|
||
| "github.com/qmuntal/draco-go/draco" | ||
| ) | ||
|
|
||
| func main() { | ||
| data, err := ioutil.ReadFile("../../testdata/test_nm.obj.edgebreaker.cl4.2.2.drc") | ||
| if err != nil { | ||
| log.Fatalf("failed to read test file: %v", err) | ||
| } | ||
| m := draco.NewMesh() | ||
| d := draco.NewDecoder() | ||
| if err := d.DecodeMesh(data, m); err != nil { | ||
| log.Fatalf("failed to decode mesh: %v", err) | ||
| } | ||
| log.Println(m.NumFaces()) | ||
| if n := m.NumFaces(); n != 170 { | ||
| log.Fatalf("Mesh.NumFaces got 170, got %d", n) | ||
| } | ||
| if n := m.NumPoints(); n != 99 { | ||
| log.Fatalf("Mesh.NumFaces got 99, got %d", n) | ||
| } | ||
| faces := m.Faces(nil) | ||
| want := [3]uint32{0, 1, 2} | ||
| if got := faces[0]; got != want { | ||
| log.Fatalf("Mesh.Faces[0] got %v, got %v", want, got) | ||
| } | ||
| } | ||
| package main | ||
|
|
||
| import ( | ||
| "io/ioutil" | ||
| "log" | ||
|
|
||
| "github.com/qmuntal/draco-go/draco" | ||
| ) | ||
|
|
||
| func main() { | ||
| data, err := ioutil.ReadFile("../../testdata/test_nm.obj.edgebreaker.cl4.2.2.drc") | ||
| if err != nil { | ||
| log.Fatalf("failed to read test file: %v", err) | ||
| } | ||
| m := draco.NewMesh() | ||
| d := draco.NewDecoder() | ||
| if err := d.DecodeMesh(data, m); err != nil { | ||
| log.Fatalf("failed to decode mesh: %v", err) | ||
| } | ||
| log.Println(m.NumFaces()) | ||
| if n := m.NumFaces(); n != 170 { | ||
| log.Fatalf("Mesh.NumFaces got 170, got %d", n) | ||
| } | ||
| if n := m.NumPoints(); n != 99 { | ||
| log.Fatalf("Mesh.NumFaces got 99, got %d", n) | ||
| } | ||
| faces := m.Faces(nil) | ||
| want := [3]uint32{0, 1, 2} | ||
| if got := faces[0]; got != want { | ||
| log.Fatalf("Mesh.Faces[0] got %v, got %v", want, got) | ||
| } | ||
| } |