implement envelope

rust/lightwave/README.md

@@ -27,7 +27,7 @@ Progress: About 90% ([LWO2 Spec](http://static.lightwave3d.com/sdk/2015/html/fil
 | Discontinuous Vertex Mapping               | `VMAD` | ✅      |
 | Vertex Map Parameter                       | `VMPA` | ✅      |
 | [Envelope Definition](#envelope-subchunks) | `ENVL` | ✅      |
-| [Image (-Sequence)](#clip-subchunks)       | `CLIP` | 🚧     |
+| [Image (-Sequence)](#clip-subchunks)       | `CLIP` | ✅      |
 | [Surface Definition](#surface-subchunks)   | `SURF` | 🚧     |
 | Bounding Box                               | `BBOX` | ✅      |
 | Description Line                           | `DESC` | ✅      |
@@ -54,7 +54,7 @@ Progress: About 90% ([LWO2 Spec](http://static.lightwave3d.com/sdk/2015/html/fil
 |----------------------|--------|--------|
 | Still Image          | `STIL` | ✅      |
 | Image Sequence       | `ISEQ` | ✅      |
-| Plugin Animation     | `ANIM` | ❌      |
+| Plugin Animation     | `ANIM` | ✅      |
 | Reference (Clone)    | `XREF` | ✅      |
 | Flag (Undocumented)  | `FLAG` | ⚠️     | 
 | Color-cycling Still  | `STCC` | ✅      |
@@ -68,9 +68,9 @@ Progress: About 90% ([LWO2 Spec](http://static.lightwave3d.com/sdk/2015/html/fil
 | Saturation           | `SATR` | ✅      | 
 | Hue                  | `HUE`  | ✅      | 
 | Gamma Correction     | `GAMM` | ✅      | 
-| Negative             | `NEGA` | ❌      | 
-| Plugin Image Filters | `IFLT` | ❌      | 
-| Plugin Pixel Filters | `PFLT` | ❌      | 
+| Negative             | `NEGA` | ✅      | 
+| Plugin Image Filters | `IFLT` | ✅      | 
+| Plugin Pixel Filters | `PFLT` | ✅      | 
 
 
 ### Surface Subchunks

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

@@ -3,6 +3,7 @@ use binrw::binread;
 
 pub mod blocks;
 pub mod surface_parameters;
+pub mod plugin;
 
 #[binread]
 #[br(import(_length: u32))]

rust/lightwave/src/lwo2/sub_tags/plugin.rs

@@ -0,0 +1,16 @@
+use binrw::{binread, NullString, PosValue};
+
+#[binread]
+#[br(import(length: u32))]
+#[derive(Debug)]
+pub struct PluginServerNameAndData {
+    #[br(temp)]
+    start_pos: PosValue<()>,
+    #[br(align_after = 2)]
+    pub server_name: NullString,
+    pub flags: u16,
+    #[br(temp)]
+    end_pos: PosValue<()>,
+    #[br(count = length as u64 - (end_pos.pos - start_pos.pos))]
+    pub parameters: Vec<u8>,
+}

rust/lightwave/src/lwo2/tags/envelope.rs

@@ -2,6 +2,7 @@ use crate::binrw_helpers::until_size_limit;
 use crate::iff::SubChunk;
 use crate::lwo2::vx;
 use binrw::{binread, NullString, PosValue};
+use crate::lwo2::sub_tags::plugin::PluginServerNameAndData;
 
 #[binread]
 #[br(import(length: u32))]
@@ -31,7 +32,7 @@ pub enum EnvelopeSubChunk {
     #[br(magic(b"SPAN"))]
     IntervalInterpolation(SubChunk<IntervalInterpolation>),
     #[br(magic(b"CHAN"))]
-    PluginChannelModifiers(SubChunk<PluginChannelModifiers>),
+    PluginChannelModifiers(SubChunk<PluginServerNameAndData>),
     #[br(magic(b"NAME"))]
     ChannelName(SubChunk<PluginChannelName>),
 }
@@ -46,24 +47,6 @@ pub struct PluginChannelName {
     pub channel_name: NullString,
 }
 
-/// Channel modifiers can be associated with an envelope. Each channel chunk contains the name of
-/// the plug-in and some flag bits. Only the first flag bit is defined; if set, the plug-in is
-/// disabled. The data that follows this, if any, is owned by the plug-in.
-#[binread]
-#[br(import(length: u32))]
-#[derive(Debug)]
-pub struct PluginChannelModifiers {
-    #[br(temp)]
-    start_pos: PosValue<()>,
-    #[br(align_after = 2)]
-    pub server_name: NullString,
-    pub flags: u16,
-    #[br(temp)]
-    end_pos: PosValue<()>,
-    #[br(count = length as u64 - (end_pos.pos - start_pos.pos))]
-    pub parameters: Vec<u8>,
-}
-
 /// Defines the interpolation between the most recent KEY chunk and the KEY immediately before it in
 /// time. The type identifies the interpolation algorithm and can be STEP, LINE, TCB
 /// (Kochanek-Bartels), HERM (Hermite), BEZI (1D Bezier) or BEZ2 (2D Bezier).

rust/lightwave/src/lwo2/tags/image_clip.rs

@@ -1,7 +1,8 @@
 use crate::binrw_helpers::until_size_limit;
 use crate::iff::SubChunk;
-use crate::lwo2::sub_tags::ValueEnvelope;
-use binrw::{binread, NullString};
+use crate::lwo2::sub_tags::plugin::PluginServerNameAndData;
+use crate::lwo2::sub_tags::{EnableState, ValueEnvelope};
+use binrw::{binread, NullString, PosValue};
 
 /// Describes an image or a sequence of images. Surface definitions specify images by referring to
 /// CLIP chunks. The term "clip" is used to describe these because they can be numbered sequences
@@ -24,6 +25,8 @@ pub enum ImageClipSubChunk {
     StillImage(SubChunk<StillImage>),
     #[br(magic(b"ISEQ"))]
     ImageSequence(SubChunk<ImageSequence>),
+    #[br(magic(b"ANIM"))]
+    PluginAnimation(SubChunk<PluginAnimation>),
     #[br(magic(b"XREF"))]
     Reference(SubChunk<Reference>),
     #[br(magic(b"FLAG"))]
@@ -46,10 +49,33 @@ pub enum ImageClipSubChunk {
     Brightness(SubChunk<ValueEnvelope>),
     #[br(magic(b"SATR"))]
     Saturation(SubChunk<ValueEnvelope>),
-    #[br(magic(b"HUE"))] // TODO: Typo? Docs say it's just "HUE"
+    #[br(magic(b"HUE\0"))]
     Hue(SubChunk<ValueEnvelope>),
     #[br(magic(b"GAMM"))]
     GammaCorrection(SubChunk<ValueEnvelope>),
+    #[br(magic(b"NEGA"))]
+    Negative(SubChunk<EnableState>),
+    #[br(magic(b"IFLT"))]
+    PluginImageFilters(SubChunk<PluginServerNameAndData>),
+    #[br(magic(b"PFLT"))]
+    PluginPixelFilters(SubChunk<PluginServerNameAndData>),
+}
+
+#[binread]
+#[br(import(_length: u32))]
+#[derive(Debug)]
+pub struct PluginAnimation {
+    #[br(temp)]
+    start_pos: PosValue<()>,
+    #[br(align_after = 2)]
+    pub file_name: NullString,
+    #[br(align_after = 2)]
+    pub server_name: NullString,
+    pub flags: u16,
+    #[br(temp)]
+    end_pos: PosValue<()>,
+    #[br(count = end_pos.pos - start_pos.pos)]
+    pub data: Vec<u8>,
 }
 
 /// Contains the color space of the texture. If the flag is 0, then the color space is contained