viewer wip

Cargo.toml

@@ -9,4 +9,8 @@ arrayvec = "0.7.2"
 binrw = "0.8.0"
 thiserror = "1.0.30"
 static_assertions = "1.1.0"
-bitflags = "1.0.4"
+bitflags = "1.0.4"
+
+[dev-dependencies]
+three-d = "0.10.2"
+miette = { version = "4.2.1", features = ["fancy"] }

examples/parse.rs

@@ -1,14 +1,31 @@
 use std::env::args;
 use std::fs;
+use std::path::PathBuf;
 use vmdl::mdl::Mdl;
+use vmdl::vtx::Vtx;
+use vmdl::vvd::Vvd;
+use vmdl::Model;
 
 fn main() -> Result<(), vmdl::ModelError> {
     let mut args = args();
     let _ = args.next();
-    let data = fs::read(args.next().expect("No demo file provided"))?;
+    let path = PathBuf::from(args.next().expect("No demo file provided"));
-    let mdl = Mdl::read(&data)?;
 
-    dbg!(mdl.header);
+    let data = fs::read(&path)?;
+    let mdl = Mdl::read(&data)?;
+    let data = fs::read(path.with_extension("dx90.vtx"))?;
+    let vtx = Vtx::read(&data)?;
+    let data = fs::read(path.with_extension("vvd"))?;
+    let vvd = Vvd::read(&data)?;
+    dbg!(vvd.vertices.last());
+
+    let model = Model::from_parts(mdl, vtx, vvd);
+    for strip in model.vertex_strips() {
+        for vertex in strip {
+            println!("{:?}", vertex);
+        }
+        println!("")
+    }
 
     Ok(())
 }

examples/view.rs

@@ -0,0 +1,252 @@
+use std::env::args_os;
+use std::fs;
+use std::fs::read;
+use std::path::{Path, PathBuf};
+use thiserror::Error;
+use three_d::*;
+use vmdl::mdl::Mdl;
+use vmdl::vtx::Vtx;
+use vmdl::vvd::Vvd;
+use vmdl::Model;
+
+#[derive(Debug, Error)]
+enum Error {
+    #[error(transparent)]
+    Three(#[from] Box<dyn std::error::Error>),
+    #[error(transparent)]
+    Mdl(#[from] vmdl::ModelError),
+    #[error(transparent)]
+    IO(#[from] std::io::Error),
+    #[error("{0}")]
+    Other(&'static str),
+}
+
+fn main() -> Result<(), Error> {
+    miette::set_panic_hook();
+
+    let mut args = args_os();
+    let _ = args.next();
+    let path = PathBuf::from(args.next().expect("No demo file provided"));
+    let model = load(&path).unwrap();
+
+    let window = Window::new(WindowSettings {
+        title: path.display().to_string(),
+        min_size: (512, 512),
+        max_size: Some((1280, 720)),
+        ..Default::default()
+    })
+    .unwrap();
+    let context = window.gl().unwrap();
+
+    let forward_pipeline = ForwardPipeline::new(&context).unwrap();
+    let mut camera = Camera::new_perspective(
+        &context,
+        window.viewport().unwrap(),
+        vec3(2.0, 2.0, 5.0),
+        vec3(0.0, 0.0, 0.0),
+        vec3(0.0, 1.0, 0.0),
+        degrees(90.0),
+        0.01,
+        300.0,
+    )
+    .unwrap();
+    let mut control = OrbitControl::new(*camera.target(), 1.0, 100.0);
+    let mut gui = three_d::GUI::new(&context).unwrap();
+
+    let mut cpu_mesh = model_to_mesh(&model);
+    let material = PhysicalMaterial {
+        albedo: Color {
+            r: 128,
+            g: 128,
+            b: 128,
+            a: 255,
+        },
+        ..Default::default()
+    };
+
+    let mut model = three_d::Model::new_with_material(&context, &cpu_mesh, material)?;
+    model.set_transformation(Mat4::from_angle_x(degrees(90.0)));
+
+    let mut lights = Lights {
+        ambient: Some(AmbientLight {
+            color: Color::WHITE,
+            intensity: 0.2,
+            ..Default::default()
+        }),
+        directional: vec![
+            DirectionalLight::new(&context, 1.0, Color::WHITE, &vec3(0.0, -1.0, 0.0))?,
+            DirectionalLight::new(&context, 1.0, Color::WHITE, &vec3(0.0, 1.0, 0.0))?,
+        ],
+        ..Default::default()
+    };
+
+    // main loop
+    let mut shadows_enabled = true;
+    let mut directional_intensity = lights.directional[0].intensity();
+    let mut depth_max = 30.0;
+    let mut fov = 60.0;
+    let mut debug_type = DebugType::NONE;
+
+    window.render_loop(move |mut frame_input| {
+        let mut change = frame_input.first_frame;
+        let mut panel_width = frame_input.viewport.width;
+        change |= gui
+            .update(&mut frame_input, |gui_context| {
+                use three_d::egui::*;
+                SidePanel::left("side_panel").show(gui_context, |ui| {
+                    ui.heading("Debug Panel");
+
+                    ui.label("Light options");
+                    ui.add(
+                        Slider::new(&mut lights.ambient.as_mut().unwrap().intensity, 0.0..=1.0)
+                            .text("Ambient intensity"),
+                    );
+                    ui.add(
+                        Slider::new(&mut directional_intensity, 0.0..=1.0)
+                            .text("Directional intensity"),
+                    );
+                    lights.directional[0].set_intensity(directional_intensity);
+                    lights.directional[1].set_intensity(directional_intensity);
+                    if ui.checkbox(&mut shadows_enabled, "Shadows").clicked() {
+                        if !shadows_enabled {
+                            lights.directional[0].clear_shadow_map();
+                            lights.directional[1].clear_shadow_map();
+                        }
+                    }
+
+                    ui.label("Debug options");
+                    ui.radio_value(&mut debug_type, DebugType::NONE, "None");
+                    ui.radio_value(&mut debug_type, DebugType::POSITION, "Position");
+                    ui.radio_value(&mut debug_type, DebugType::NORMAL, "Normal");
+                    ui.radio_value(&mut debug_type, DebugType::COLOR, "Color");
+                    ui.radio_value(&mut debug_type, DebugType::DEPTH, "Depth");
+                    ui.radio_value(&mut debug_type, DebugType::ORM, "ORM");
+
+                    ui.label("View options");
+                    ui.add(Slider::new(&mut depth_max, 1.0..=30.0).text("Depth max"));
+                    ui.add(Slider::new(&mut fov, 45.0..=90.0).text("FOV"));
+
+                    ui.label("Position");
+                    ui.add(Label::new(format!("\tx: {}", camera.position().x)));
+                    ui.add(Label::new(format!("\ty: {}", camera.position().y)));
+                    ui.add(Label::new(format!("\tz: {}", camera.position().z)));
+                });
+                panel_width = gui_context.used_size().x as u32;
+            })
+            .unwrap();
+
+        let viewport = Viewport {
+            x: panel_width as i32,
+            y: 0,
+            width: frame_input.viewport.width - panel_width,
+            height: frame_input.viewport.height,
+        };
+        change |= camera.set_viewport(viewport).unwrap();
+        change |= control
+            .handle_events(&mut camera, &mut frame_input.events)
+            .unwrap();
+
+        // Draw
+        {
+            camera
+                .set_perspective_projection(degrees(fov), camera.z_near(), camera.z_far())
+                .unwrap();
+            if shadows_enabled {
+                lights.directional[0]
+                    .generate_shadow_map(4.0, 1024, 1024, &[&model])
+                    .unwrap();
+                lights.directional[1]
+                    .generate_shadow_map(4.0, 1024, 1024, &[&model])
+                    .unwrap();
+            }
+
+            // Light pass
+            Screen::write(&context, ClearState::default(), || {
+                match debug_type {
+                    DebugType::NORMAL => {
+                        model.render_with_material(
+                            &NormalMaterial::from_physical_material(&model.material),
+                            &camera,
+                            &lights,
+                        )?;
+                    }
+                    DebugType::DEPTH => {
+                        let mut depth_material = DepthMaterial::default();
+                        depth_material.max_distance = Some(depth_max);
+                        model.render_with_material(&depth_material, &camera, &lights)?;
+                    }
+                    DebugType::ORM => {
+                        model.render_with_material(
+                            &ORMMaterial::from_physical_material(&model.material),
+                            &camera,
+                            &lights,
+                        )?;
+                    }
+                    DebugType::POSITION => {
+                        let position_material = PositionMaterial::default();
+                        model.render_with_material(&position_material, &camera, &lights)?;
+                    }
+                    DebugType::UV => {
+                        let uv_material = UVMaterial::default();
+                        model.render_with_material(&uv_material, &camera, &lights)?;
+                    }
+                    DebugType::COLOR => {
+                        model.render_with_material(
+                            &ColorMaterial::from_physical_material(&model.material),
+                            &camera,
+                            &lights,
+                        )?;
+                    }
+                    DebugType::NONE => forward_pipeline.render_pass(&camera, &[&model], &lights)?,
+                };
+                gui.render()?;
+                Ok(())
+            })
+            .unwrap();
+        }
+
+        let _ = change;
+
+        FrameOutput::default()
+    })?;
+    Ok(())
+}
+
+fn load(path: &Path) -> Result<Model, vmdl::ModelError> {
+    let data = fs::read(path)?;
+    let mdl = Mdl::read(&data)?;
+    let data = fs::read(path.with_extension("dx90.vtx"))?;
+    let vtx = Vtx::read(&data)?;
+    let data = fs::read(path.with_extension("vvd"))?;
+    let vvd = Vvd::read(&data)?;
+
+    Ok(Model::from_parts(mdl, vtx, vvd))
+}
+
+// 1 hammer unit is ~1.905cm
+const UNIT_SCALE: f32 = 1.0 / (1.905 * 100.0);
+
+fn model_to_mesh(model: &Model) -> CPUMesh {
+    let positions: Vec<f32> = model
+        .vertex_strips()
+        .flat_map(|mut strip| {
+            let mut a = strip.next().unwrap();
+            let mut b = strip.next().unwrap();
+            strip
+                .flat_map(move |c| {
+                    let tri = [a, b, c];
+                    a = b;
+                    b = c;
+                    tri
+                })
+                .flat_map(|vec| vec.iter())
+        })
+        .collect();
+
+    let mut mesh = CPUMesh {
+        positions,
+        ..Default::default()
+    };
+    mesh.compute_normals();
+    mesh
+}

src/lib.rs

@@ -5,12 +5,44 @@ mod shared;
 pub mod vtx;
 pub mod vvd;
 
+use crate::mdl::Mdl;
+use crate::vtx::Vtx;
+use crate::vvd::Vvd;
 use binrw::{BinRead, BinReaderExt};
 pub use error::*;
 pub use handle::Handle;
 pub use shared::*;
+use std::any::type_name;
 use std::io::Cursor;
 
+pub struct Model {
+    mdl: Mdl,
+    vtx: Vtx,
+    vvd: Vvd,
+}
+
+impl Model {
+    pub fn from_parts(mdl: Mdl, vtx: Vtx, vvd: Vvd) -> Self {
+        Model { mdl, vtx, vvd }
+    }
+
+    pub fn vertex_strips(&self) -> impl Iterator<Item = impl Iterator<Item = Vector> + '_> {
+        self.vtx
+            .body_parts
+            .iter()
+            .flat_map(|part| part.models.iter())
+            .flat_map(|model| model.lods.iter().next())
+            .flat_map(|lod| lod.meshes.iter())
+            .flat_map(|mesh| mesh.strip_groups.iter())
+            .map(|strip_group| {
+                strip_group
+                    .indices
+                    .iter()
+                    .map(|index| self.vvd.vertices[(*index) as usize].position)
+            })
+    }
+}
+
 fn read_indexes<'a, I: Iterator<Item = usize> + 'static, T: BinRead>(
     indexes: I,
     data: &'a [u8],
@@ -21,7 +53,7 @@ where
     indexes
         .map(|index| {
             data.get(index..).ok_or_else(|| ModelError::OutOfBounds {
-                data: "Bone",
+                data: type_name::<T>(),
                 offset: index,
             })
         })

src/shared.rs

@@ -11,6 +11,12 @@ pub struct Vector {
     pub z: f32,
 }
 
+impl Vector {
+    pub fn iter(&self) -> impl Iterator<Item = f32> {
+        [self.x, self.y, self.z].into_iter()
+    }
+}
+
 impl From<Vector> for [f32; 3] {
     fn from(vector: Vector) -> Self {
         [vector.x, vector.y, vector.z]

src/vtx/mod.rs

@@ -142,6 +142,7 @@ impl Mesh {
 pub struct StripGroup {
     // todo vertex indexes
     // todo topologies
+    pub indices: Vec<u16>,
     pub vertices: Vec<Vertex>,
     pub strips: Vec<Strip>,
     pub flags: StripGroupFlags,
@@ -173,6 +174,17 @@ impl StripGroup {
                     Strip::read(data, header)
                 })
                 .collect::<Result<_>>()?,
+            indices: header
+                .index_indexes()
+                .map(|index| {
+                    let data = data.get(index..).ok_or_else(|| ModelError::OutOfBounds {
+                        data: "VertexIndex",
+                        offset: index,
+                    })?;
+                    let mut reader = Cursor::new(data);
+                    Ok(reader.read_le()?)
+                })
+                .collect::<Result<_>>()?,
             flags: header.flags,
         })
     }

src/vtx/raw.rs

@@ -123,7 +123,7 @@ impl StripGroupHeader {
     }
 
     pub fn index_indexes(&self) -> impl Iterator<Item = usize> {
-        index_range(self.index_offset, self.index_count, size_of::<Vertex>())
+        index_range(self.index_offset, self.index_count, size_of::<u16>())
     }
 
     pub fn strip_indexes(&self) -> impl Iterator<Item = usize> {

tests/parse.rs

@@ -2,6 +2,7 @@ use std::fs::read;
 use vmdl::mdl::Mdl;
 use vmdl::vtx::Vtx;
 use vmdl::vvd::Vvd;
+use vmdl::Model;
 
 #[test]
 fn parse_mdl() {