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main.go
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main.go
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package main
import (
"fmt"
"os"
"path"
. "github.com/fogleman/fauxgl"
)
func separate(filename string) {
mesh, err := LoadMesh(filename)
if err != nil {
panic(err)
}
lookup := make(map[Vector][]*Triangle)
for _, t := range mesh.Triangles {
lookup[t.V1.Position] = append(lookup[t.V1.Position], t)
lookup[t.V2.Position] = append(lookup[t.V2.Position], t)
lookup[t.V3.Position] = append(lookup[t.V3.Position], t)
}
var groups [][]*Triangle
seen := make(map[*Triangle]bool)
done := false
for !done {
done = true
var q []*Triangle
for _, t := range mesh.Triangles {
if !seen[t] {
q = append(q, t)
done = false
break
}
}
var group []*Triangle
for len(q) > 0 {
var t *Triangle
t, q = q[len(q)-1], q[:len(q)-1]
if seen[t] {
continue
}
group = append(group, t)
seen[t] = true
for _, v := range []Vertex{t.V1, t.V2, t.V3} {
for _, u := range lookup[v.Position] {
if !seen[u] {
q = append(q, u)
}
}
}
}
if len(group) > 0 {
groups = append(groups, group)
}
}
for i, group := range groups {
fmt.Println(len(group))
mesh := NewTriangleMesh(group)
ext := path.Ext(filename)
mesh.SaveSTL(fmt.Sprintf(filename[:len(filename)-len(ext)]+".%d.stl", i))
}
}
func main() {
for _, filename := range os.Args[1:] {
separate(filename)
}
}