only allow one instance of the program and use IPC to load models from other instances

Cargo.lock

@@ -37,7 +37,7 @@ dependencies = [
  "log 0.4.20",
  "parking",
  "polling",
- "rustix",
+ "rustix 0.37.25",
  "slab",
  "socket2",
  "waker-fn",
@@ -70,6 +70,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d468802bab17cbc0cc575e9b053f41e72aa36bfa6b7f55e3529ffa43161b97fa"
 
+[[package]]
+name = "bincode"
+version = "1.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b1f45e9417d87227c7a56d22e471c6206462cba514c7590c09aff4cf6d1ddcad"
+dependencies = [
+ "serde",
+]
+
 [[package]]
 name = "bit_field"
 version = "0.10.2"
@@ -82,6 +91,12 @@ version = "1.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bef38d45163c2f1dde094a7dfd33ccf595c92905c8f8f4fdc18d06fb1037718a"
 
+[[package]]
+name = "bitflags"
+version = "2.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "327762f6e5a765692301e5bb513e0d9fef63be86bbc14528052b1cd3e6f03e07"
+
 [[package]]
 name = "block"
 version = "0.1.6"
@@ -316,6 +331,16 @@ dependencies = [
  "spin",
 ]
 
+[[package]]
+name = "fs4"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "29f9df8a11882c4e3335eb2d18a0137c505d9ca927470b0cac9c6f0ae07d28f7"
+dependencies = [
+ "rustix 0.38.20",
+ "windows-sys",
+]
+
 [[package]]
 name = "fuchsia-cprng"
 version = "0.1.1"
@@ -433,7 +458,7 @@ version = "0.51.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "919ebc7bdbf60a529689a5e58f80d9dcde27e3d2ab4f2f7ce711ec439fe789c5"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "glfw-sys",
  "objc",
  "raw-window-handle",
@@ -551,7 +576,7 @@ version = "0.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "122d677d0efcd64ca15f12907beaf46b26bbd2cdc855ee5b227f29cf50f75bb5"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "cfg-if",
  "imgui-sys",
  "mint",
@@ -646,6 +671,12 @@ version = "0.3.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ef53942eb7bf7ff43a617b3e2c1c4a5ecf5944a7c1bc12d7ee39bbb15e5c1519"
 
+[[package]]
+name = "linux-raw-sys"
+version = "0.4.10"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "da2479e8c062e40bf0066ffa0bc823de0a9368974af99c9f6df941d2c231e03f"
+
 [[package]]
 name = "lock_api"
 version = "0.4.10"
@@ -909,7 +940,7 @@ version = "0.17.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "dd75bf2d8dd3702b9707cdbc56a5b9ef42cec752eb8b3bafc01234558442aa64"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "crc32fast",
  "fdeflate",
  "flate2",
@@ -923,7 +954,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "4b2d323e8ca7996b3e23126511a523f7e62924d93ecd5ae73b333815b0eb3dce"
 dependencies = [
  "autocfg",
- "bitflags",
+ "bitflags 1.3.2",
  "cfg-if",
  "concurrent-queue",
  "libc",
@@ -1049,7 +1080,7 @@ version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
 ]
 
 [[package]]
@@ -1108,11 +1139,24 @@ version = "0.37.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d4eb579851244c2c03e7c24f501c3432bed80b8f720af1d6e5b0e0f01555a035"
 dependencies = [
- "bitflags",
+ "bitflags 1.3.2",
  "errno",
  "io-lifetimes",
  "libc",
- "linux-raw-sys",
+ "linux-raw-sys 0.3.8",
+ "windows-sys",
+]
+
+[[package]]
+name = "rustix"
+version = "0.38.20"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "67ce50cb2e16c2903e30d1cbccfd8387a74b9d4c938b6a4c5ec6cc7556f7a8a0"
+dependencies = [
+ "bitflags 2.4.1",
+ "errno",
+ "libc",
+ "linux-raw-sys 0.4.10",
  "windows-sys",
 ]
 
@@ -1245,6 +1289,8 @@ name = "threedobs"
 version = "0.1.1"
 dependencies = [
  "anyhow",
+ "bincode",
+ "fs4",
  "glad-gl",
  "glfw",
  "glm",