lwo2 parser feature complete

rust/lightwave/README.md

@@ -1,5 +1,7 @@
 # LightWave 3D Rust Parser
 
+Complete LWO2 parser for Rust.
+
 Basic Usage
 
 ```rust
@@ -14,7 +16,7 @@ fn main() {
 
 ## LightWave Object (LWO2)
 
-Progress: About 90% ([LWO2 Spec](http://static.lightwave3d.com/sdk/2015/html/filefmts/lwo2.html))
+Fully feature complete following the [LWO2 Spec](http://static.lightwave3d.com/sdk/2015/html/filefmts/lwo2.html).
 
 | Chunk                                      | Tag    | Status |
 |--------------------------------------------|--------|--------|
@@ -107,7 +109,7 @@ Progress: About 90% ([LWO2 Spec](http://static.lightwave3d.com/sdk/2015/html/fil
 
 Ordinal Strings:
 * ✅ [Image Texture Map](#image-texture-map) `IMAP`
-* ❌ [Procedural Texture](#procedural-texture) `PROC`
+* ✅ [Procedural Texture](#procedural-texture) `PROC`
 * ✅ [Gradient Texture](#gradient-texture) `GRAD`
 * ✅ [Shader Plugin](#shaders) `SHDR`
 
@@ -150,9 +152,9 @@ Ordinal Strings:
 
 | Chunk                    | Tag    | Status |
 |--------------------------|--------|--------|
-| Axis                     | `AXIS` | ❌      |
-| Basic Value              | `VALU` | ❌      |
-| Algorithm and Parameters | `FUNC` | ❌      |
+| Axis                     | `AXIS` | ✅      |
+| Basic Value              | `VALU` | ✅      |
+| Algorithm and Parameters | `FUNC` | ✅      |
 
 #### Gradient Texture
 

rust/lightwave/src/lwo2/sub_tags/blocks/mod.rs

@@ -2,15 +2,14 @@ use crate::binrw_helpers::until_size_limit;
 use crate::iff::SubChunk;
 use crate::lwo2::sub_tags::blocks::gradient_texture::GradientTextureSubChunk;
 use crate::lwo2::sub_tags::blocks::image_texture::SurfaceBlockImageTextureSubChunk;
-use crate::lwo2::sub_tags::blocks::shaders::ShaderAlgorithm;
+use crate::lwo2::sub_tags::blocks::procedural_texture::ProceduralTextureSubChunk;
 use crate::lwo2::sub_tags::EnableState;
 use crate::lwo2::vx;
-use binrw::binread;
+use binrw::{binread, NullString};
 
 pub mod gradient_texture;
 pub mod image_texture;
 pub mod procedural_texture;
-pub mod shaders;
 pub mod texture_mapping;
 
 #[binread]
@@ -24,7 +23,11 @@ pub enum SurfaceBlocks {
         attributes: Vec<SurfaceBlockImageTextureSubChunk>,
     },
     #[br(magic(b"PROC"))]
-    ProceduralTexture,
+    ProceduralTexture {
+        header: SubChunk<SurfaceBlockHeader>,
+        #[br(parse_with = until_size_limit(length as u64 - (header.length as u64 + 2 + 4)))]
+        attributes: Vec<ProceduralTextureSubChunk>,
+    },
     #[br(magic(b"GRAD"))]
     GradientTexture {
         header: SubChunk<SurfaceBlockHeader>,
@@ -35,10 +38,20 @@ pub enum SurfaceBlocks {
     ShaderPlugin {
         header: SubChunk<SurfaceBlockHeader>,
         #[br(magic(b"FUNC"))]
-        algorithm: SubChunk<ShaderAlgorithm>,
+        algorithm: SubChunk<Algorithm>,
     },
 }
 
+#[binread]
+#[br(import(length: u32))]
+#[derive(Debug)]
+pub struct Algorithm {
+    #[br(align_after = 2)]
+    pub algorithm_name: NullString,
+    #[br(count = length - (algorithm_name.len() as u32 + 1))]
+    pub data: Vec<u8>,
+}
+
 #[binread]
 #[br(import(length: u32))]
 #[derive(Debug)]

rust/lightwave/src/lwo2/sub_tags/blocks/procedural_texture.rs

@@ -0,0 +1,32 @@
+use crate::iff::SubChunk;
+use crate::lwo2::sub_tags::blocks::Algorithm;
+use binrw::binread;
+
+#[binread]
+#[derive(Debug)]
+pub enum ProceduralTextureSubChunk {
+    #[br(magic(b"AXIS"))]
+    Axis(SubChunk<Axis>),
+    #[br(magic(b"VALU"))]
+    BasicValue(SubChunk<BasicValue>),
+    #[br(magic(b"FUNC"))]
+    AlgorithmAndParameters(SubChunk<Algorithm>),
+}
+
+/// Procedurals are often modulations between the current channel value and another value, given
+/// here. This may be a scalar or a vector.
+#[binread]
+#[br(import(length: u32))]
+#[derive(Debug)]
+pub struct BasicValue {
+    #[br(count = length / 4)]
+    pub value: Vec<f32>,
+}
+
+/// If the procedural has an axis, it may be defined with this chunk using a value of 0, 1 or 2.
+#[binread]
+#[br(import(_length: u32))]
+#[derive(Debug)]
+pub struct Axis {
+    pub axis: u16,
+}

rust/lightwave/src/lwo2/sub_tags/blocks/shaders.rs

@@ -1,11 +0,0 @@
-use binrw::{binread, NullString};
-
-#[binread]
-#[br(import(length: u32))]
-#[derive(Debug)]
-pub struct ShaderAlgorithm {
-    #[br(align_after = 2)]
-    pub algorithm_name: NullString,
-    #[br(count = length - (algorithm_name.len() as u32 + 1))]
-    pub data: Vec<u8>,
-}