got a one-channel animation working

.gitignore

@@ -1,4 +1,5 @@
 /target
+/videos
 
 *.blend
 *.glb

src/main.rs

@@ -164,6 +164,12 @@ fn main () {
 			format: iqm::FLOAT,
 			size: 3,
 		},
+		iqm::VertexArrayUnplaced {
+			r#type: iqm::TANGENT,
+			flags: 0,
+			format: iqm::FLOAT,
+			size: 4,
+		},
 		iqm::VertexArrayUnplaced {
 			r#type: iqm::BLENDINDEXES,
 			flags: 0,
@@ -183,7 +189,7 @@ fn main () {
 			name: u32::try_from (texts.len ()).unwrap (),
 			parent: -1,
 			translate: [0.0, 0.0, 0.0],
-			rotate: [1.0, 0.0, 0.0, 0.0],
+			rotate: [0.0, 0.0, 0.0, 1.0],
 			scale: [1.0, 1.0, 1.0],
 		},
 	];
@@ -193,11 +199,33 @@ fn main () {
 		iqm::Pose {
 			parent: -1,
 			channelmask: 1, // Should be X translation
-			channeloffset: [0.0; 10],
+			channeloffset: [
+				0.0, 0.0, 0.0,
+				0.0, 0.0, 0.0, 1.0,
+				1.0, 1.0, 1.0,
+			],
 			channelscale: [16.0 / 32768.0; 10],
 		},
 	];
 	
+	let anims = [
+		iqm::Anim {
+			name: u32::try_from (texts.len ()).unwrap (),
+			first_frame: 0,
+			num_frames: 2,
+			framerate: 0.5,
+			flags: 0,
+		},
+	];
+	texts.push_str ("bogus_anim\0");
+	
+	let num_framechannels = 1;
+	
+	let frames = [
+		0,
+		32768,
+	];
+	
 	let vertexes = vertexes;
 	let triangles = triangles;
 	let meshes = meshes;
@@ -208,6 +236,8 @@ fn main () {
 	
 	let num_joints = u32::try_from (joints.len ()).unwrap ();
 	let num_poses = u32::try_from (poses.len ()).unwrap ();
+	let num_anims = u32::try_from (anims.len ()).unwrap ();
+	let num_frames = u32::try_from (frames.len ()).unwrap () / num_framechannels;
 	
 	let num_text = texts.len ();
 	let num_text = u32::try_from (num_text).unwrap ();
@@ -245,13 +275,22 @@ fn main () {
 	
 	let ofs_triangles = offset;
 	offset += num_triangles * 3 * 4;
-	let ofs_text = offset;
+	
-	offset += num_text;
 	let ofs_joints = offset;
 	offset += num_joints * 48;
+	
 	let ofs_poses = offset;
 	offset += num_poses * 88;
 	
+	let ofs_anims = offset;
+	offset += num_anims * 5 * 4;
+	
+	let ofs_frames = offset;
+	offset += num_frames * num_framechannels * 2;
+	
+	let ofs_text = offset;
+	offset += num_text;
+	
 	let filesize = offset;
 	let _ = offset;
 	
@@ -294,13 +333,13 @@ fn main () {
 	f.write_all (&(ofs_poses.to_le_bytes ())).unwrap ();
 	
 	// num_anims, ofs_anims
-	f.write_all (&(0u32.to_le_bytes ())).unwrap ();
+	f.write_all (&(num_anims.to_le_bytes ())).unwrap ();
-	f.write_all (&(0u32.to_le_bytes ())).unwrap ();
+	f.write_all (&(ofs_anims.to_le_bytes ())).unwrap ();
 	
 	// num_frames, num_framechannels, ofs_frames, ofs_bounds
-	f.write_all (&(0u32.to_le_bytes ())).unwrap ();
+	f.write_all (&(num_frames.to_le_bytes ())).unwrap ();
-	f.write_all (&(0u32.to_le_bytes ())).unwrap ();
+	f.write_all (&(num_framechannels.to_le_bytes ())).unwrap ();
-	f.write_all (&(0u32.to_le_bytes ())).unwrap ();
+	f.write_all (&(ofs_frames.to_le_bytes ())).unwrap ();
 	f.write_all (&(0u32.to_le_bytes ())).unwrap ();
 	
 	// num_comment, ofs_comment
@@ -346,6 +385,12 @@ fn main () {
 		}
 	}
 	
+	for v in &vertexes {
+		for x in [0.0, 0.0, 0.0, 1.0] {
+			f.write_all (&(f32::to_le_bytes (x))).unwrap ();
+		}
+	}
+	
 	for v in &vertexes {
 		f.write_all (&[0, 0, 0, 0]).unwrap ();
 	}
@@ -362,10 +407,6 @@ fn main () {
 		}
 	}
 	
-	// Text
-	
-	f.write_all (texts.as_bytes ()).unwrap ();
-	
 	// Joints
 	
 	for j in joints {
@@ -394,6 +435,22 @@ fn main () {
 			f.write_all (&(f32::to_le_bytes (x))).unwrap ();
 		}
 	}
+	
+	for a in anims {
+		f.write_all (&(u32::to_le_bytes (a.name))).unwrap ();
+		f.write_all (&(u32::to_le_bytes (a.first_frame))).unwrap ();
+		f.write_all (&(u32::to_le_bytes (a.num_frames))).unwrap ();
+		f.write_all (&(f32::to_le_bytes (a.framerate))).unwrap ();
+		f.write_all (&(u32::to_le_bytes (a.flags))).unwrap ();
+	}
+	
+	for x in frames {
+		f.write_all (&(u16::to_le_bytes (x))).unwrap ();
+	}
+	
+	// Text
+	
+	f.write_all (texts.as_bytes ()).unwrap ();
 }
 
 fn gltf_node_get_mat4 (node: &gltf::Node) -> Mat4 {
@@ -414,6 +471,7 @@ mod iqm {
 	
 	pub const POSITION:     u32 = 0;
 	pub const NORMAL:       u32 = 2;
+	pub const TANGENT:      u32 = 3;
 	pub const BLENDINDEXES: u32 = 4;
 	pub const BLENDWEIGHTS: u32 = 5;
 	
@@ -466,6 +524,14 @@ mod iqm {
 		pub channelscale: [f32; 10],
 	}
 	
+	pub struct Anim {
+		pub name: u32,
+		pub first_frame: u32,
+		pub num_frames: u32,
+		pub framerate: f32,
+		pub flags: u32,
+	}
+	
 	pub struct Vertex {
 		pub position: [f32; 3],
 		pub normal: [f32; 3],