BVH animation loading / retargeting (#25)

This PR adds support for BVH animation files, with a custom animation
player and retargeting solution for our Blender Rigify-based skeletal
meshes.

---------

Co-authored-by: Brooks Palin <brookspalin710@gmail.com>

Cargo.lock

@@ -175,6 +175,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "anyhow"
+version = "1.0.75"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6"
+
 [[package]]
 name = "approx"
 version = "0.5.1"
@@ -209,6 +215,12 @@ version = "0.3.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6b4930d2cb77ce62f89ee5d5289b4ac049559b1c45539271f5ed4fdc7db34545"
 
+[[package]]
+name = "arrayvec"
+version = "0.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b"
+
 [[package]]
 name = "arrayvec"
 version = "0.7.4"
@@ -1532,6 +1544,18 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "bitvec"
+version = "0.19.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55f93d0ef3363c364d5976646a38f04cf67cfe1d4c8d160cdea02cab2c116b33"
+dependencies = [
+ "funty",
+ "radium",
+ "tap",
+ "wyz",
+]
+
 [[package]]
 name = "blake3"
 version = "1.5.0"
@@ -1539,7 +1563,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0231f06152bf547e9c2b5194f247cd97aacf6dcd8b15d8e5ec0663f64580da87"
 dependencies = [
  "arrayref",
- "arrayvec",
+ "arrayvec 0.7.4",
  "cc",
  "cfg-if",
  "constant_time_eq",
@@ -1586,6 +1610,17 @@ dependencies = [
  "tracing",
 ]
 
+[[package]]
+name = "bstr"
+version = "0.2.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba3569f383e8f1598449f1a423e72e99569137b47740b1da11ef19af3d5c3223"
+dependencies = [
+ "lazy_static",
+ "memchr",
+ "regex-automata 0.1.10",
+]
+
 [[package]]
 name = "bumpalo"
 version = "3.14.0"
@@ -1646,7 +1681,7 @@ version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "6fac387a98bb7c37292057cffc56d62ecb629900026402633ae9160df93a8766"
 dependencies = [
- "nom",
+ "nom 7.1.3",
 ]
 
 [[package]]
@@ -2294,6 +2329,12 @@ dependencies = [
  "percent-encoding",
 ]
 
+[[package]]
+name = "funty"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fed34cd105917e91daa4da6b3728c47b068749d6a62c59811f06ed2ac71d9da7"
+
 [[package]]
 name = "futures-core"
 version = "0.3.28"
@@ -2816,6 +2857,29 @@ dependencies = [
  "tinyvec",
 ]
 
+[[package]]
+name = "lexical"
+version = "5.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f404a90a744e32e8be729034fc33b90cf2a56418fbf594d69aa3c0214ad414e5"
+dependencies = [
+ "cfg-if",
+ "lexical-core",
+]
+
+[[package]]
+name = "lexical-core"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6607c62aa161d23d17a9072cc5da0be67cdfc89d3afb1e8d9c842bebc2525ffe"
+dependencies = [
+ "arrayvec 0.5.2",
+ "bitflags 1.3.2",
+ "cfg-if",
+ "ryu",
+ "static_assertions",
+]
+
 [[package]]
 name = "libc"
 version = "0.2.148"
@@ -3111,6 +3175,19 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2bf50223579dc7cdcfb3bfcacf7069ff68243f8c363f62ffa99cf000a6b9c451"
 
+[[package]]
+name = "nom"
+version = "6.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e7413f999671bd4745a7b624bd370a569fb6bc574b23c83a3c5ed2e453f3d5e2"
+dependencies = [
+ "bitvec",
+ "funty",
+ "lexical-core",
+ "memchr",
+ "version_check",
+]
+
 [[package]]
 name = "nom"
 version = "7.1.3"
@@ -3411,7 +3488,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b55dc0e6db79bddbc5fd583569f7356cdcc63e1e9b2b93a9ab70dd8e717160e0"
 dependencies = [
  "approx",
- "arrayvec",
+ "arrayvec 0.7.4",
  "bitflags 1.3.2",
  "downcast-rs",
  "either",
@@ -3562,6 +3639,12 @@ dependencies = [
  "proc-macro2",
 ]
 
+[[package]]
+name = "radium"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "941ba9d78d8e2f7ce474c015eea4d9c6d25b6a3327f9832ee29a4de27f91bbb8"
+
 [[package]]
 name = "radsort"
 version = "0.1.0"
@@ -3581,7 +3664,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "62a8a0bd9d3135f7b4eb45d0796540e7bab47b6b7c974f90567ccc5a0454f42b"
 dependencies = [
  "approx",
- "arrayvec",
+ "arrayvec 0.7.4",
  "bit-vec",
  "bitflags 1.3.2",
  "crossbeam",
@@ -4015,6 +4098,7 @@ checksum = "9e08d8363704e6c71fc928674353e6b7c23dcea9d82d7012c8faf2a3a025f8d0"
 name = "studio"
 version = "0.1.0"
 dependencies = [
+ "anyhow",
  "bevy",
  "bevy-inspector-egui 0.21.0",
  "bevy_mod_outline",
@@ -4029,10 +4113,21 @@ dependencies = [
  "serde-wasm-bindgen",
  "serde_json",
  "space_editor",
+ "studio-bvh",
  "wasm-bindgen",
  "web-sys",
 ]
 
+[[package]]
+name = "studio-bvh"
+version = "0.1.0"
+dependencies = [
+ "bstr",
+ "lexical",
+ "nom 6.1.2",
+ "smallvec",
+]
+
 [[package]]
 name = "svg_fmt"
 version = "0.4.1"
@@ -4081,12 +4176,18 @@ version = "0.3.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "82870da09c57a8a5a50f830ce8993a6637b9a4932f69257f12aea3fa68f588c9"
 dependencies = [
- "arrayvec",
+ "arrayvec 0.7.4",
  "grid",
  "num-traits",
  "slotmap",
 ]
 
+[[package]]
+name = "tap"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55937e1799185b12863d447f42597ed69d9928686b8d88a1df17376a097d8369"
+
 [[package]]
 name = "termcolor"
 version = "1.3.0"
@@ -4511,7 +4612,7 @@ version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ed547920565c56c7a29afb4538ac5ae5048865a5d2f05bff3ad4fbeb921a9a2c"
 dependencies = [
- "arrayvec",
+ "arrayvec 0.7.4",
  "cfg-if",
  "js-sys",
  "log",
@@ -4535,7 +4636,7 @@ version = "0.17.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0f8a44dd301a30ceeed3c27d8c0090433d3da04d7b2a4042738095a424d12ae7"
 dependencies = [
- "arrayvec",
+ "arrayvec 0.7.4",
  "bit-vec",
  "bitflags 2.4.0",
  "codespan-reporting",
@@ -4559,7 +4660,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9a80bf0e3c77399bb52850cb0830af9bad073d5cfcb9dd8253bef8125c42db17"
 dependencies = [
  "android_system_properties",
- "arrayvec",
+ "arrayvec 0.7.4",
  "ash",
  "bit-set",
  "bitflags 2.4.0",
@@ -4901,6 +5002,12 @@ dependencies = [
  "memchr",
 ]
 
+[[package]]
+name = "wyz"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85e60b0d1b5f99db2556934e21937020776a5d31520bf169e851ac44e6420214"
+
 [[package]]
 name = "x11-dl"
 version = "2.21.0"