fix(render): project static scene on xy plane

adapters/fparkan-render-vulkan/src/asset_mesh.rs

@@ -18,20 +18,20 @@ pub enum VulkanAssetMeshError {
     IndexOutOfRange,
 }
 
-/// Shared XZ frame for a deliberately top-down diagnostic static scene.
+/// Shared XY frame for a deliberately top-down diagnostic static scene.
 ///
 /// It is a CPU-side viewer transform, not evidence of the original camera or
 /// object transform convention. Keeping it explicit prevents separately
 /// normalized terrain and model components from being incorrectly overlaid.
 #[derive(Clone, Copy, Debug, PartialEq)]
-pub struct VulkanStaticXzFrame {
+pub struct VulkanStaticXyFrame {
     center_x: f32,
-    center_z: f32,
+    center_y: f32,
     extent: f32,
 }
 
-impl VulkanStaticXzFrame {
+impl VulkanStaticXyFrame {
-    /// Builds a frame that maps the supplied XZ bounds into the static viewer.
+    /// Builds a frame that maps the supplied XY bounds into the static viewer.
     ///
     /// # Errors
     ///
@@ -40,16 +40,16 @@ impl VulkanStaticXzFrame {
     pub fn from_bounds(
         min_x: f32,
         max_x: f32,
-        min_z: f32,
+        min_y: f32,
-        max_z: f32,
+        max_y: f32,
     ) -> Result<Self, VulkanAssetMeshError> {
-        let extent = (max_x - min_x).max(max_z - min_z);
+        let extent = (max_x - min_x).max(max_y - min_y);
         if !extent.is_finite() || extent <= f32::EPSILON {
             return Err(VulkanAssetMeshError::DegenerateViewExtent);
         }
         Ok(Self {
             center_x: (min_x + max_x) * 0.5,
-            center_z: (min_z + max_z) * 0.5,
+            center_y: (min_y + max_y) * 0.5,
             extent,
         })
     }
@@ -58,14 +58,14 @@ impl VulkanStaticXzFrame {
         let scale = 1.6 / self.extent;
         [
             (position[0] - self.center_x) * scale,
-            (position[2] - self.center_z) * scale,
+            (position[1] - self.center_y) * scale,
         ]
     }
 
     fn planar_uv(self, position: [f32; 3]) -> [f32; 2] {
         [
             (position[0] - self.center_x) / self.extent + 0.5,
-            (position[2] - self.center_z) / self.extent + 0.5,
+            (position[1] - self.center_y) / self.extent + 0.5,
         ]
     }
 }
@@ -75,7 +75,7 @@ impl std::fmt::Display for VulkanAssetMeshError {
         match self {
             Self::EmptyGeometry => write!(f, "MSH contains no triangle geometry"),
             Self::NonFinitePosition => write!(f, "MSH contains a non-finite position"),
-            Self::DegenerateViewExtent => write!(f, "MSH has a degenerate XZ view extent"),
+            Self::DegenerateViewExtent => write!(f, "MSH has a degenerate XY view extent"),
             Self::IndexOutOfRange => write!(f, "MSH index exceeds the static Vulkan u16 contract"),
         }
     }
@@ -88,7 +88,7 @@ impl std::error::Error for VulkanAssetMeshError {}
 /// The original engine's node transforms, camera and material pipeline are not
 /// substituted here. This bridge is intentionally a static asset-viewer step:
 /// it preserves every batch's `index_start`, `index_count` and `base_vertex`,
-/// projects the conventional `Iron3D` XZ ground plane into the current XY shader
+/// projects the conventional `Iron3D` XY ground plane into the current XY shader
 /// input, and scales the used bounds uniformly into the visible clip rectangle.
 ///
 /// # Errors
@@ -99,12 +99,12 @@ pub fn project_msh_to_static_mesh(
     model: &ModelAsset,
 ) -> Result<VulkanStaticMesh, VulkanAssetMeshError> {
     let (indices, _) = static_model_indices_and_ranges(model)?;
-    let (min_x, max_x, min_z, max_z) = static_mesh_xz_bounds(&model.positions, &indices)?;
+    let (min_x, max_x, min_y, max_y) = static_mesh_xy_bounds(&model.positions, &indices)?;
-    let frame = VulkanStaticXzFrame::from_bounds(min_x, max_x, min_z, max_z)?;
+    let frame = VulkanStaticXyFrame::from_bounds(min_x, max_x, min_y, max_y)?;
-    project_msh_to_static_mesh_in_xz_frame(model, frame, [0.0; 3], [1.0; 3])
+    project_msh_to_static_mesh_in_xy_frame(model, frame, [0.0; 3], [1.0; 3])
 }
 
-/// Projects MSH geometry with a known translation/scale into a shared XZ frame.
+/// Projects MSH geometry with a known translation/scale into a shared XY frame.
 ///
 /// The caller supplies only transforms already decoded from mission data. Raw
 /// orientation is intentionally not interpreted until its original convention
@@ -114,9 +114,9 @@ pub fn project_msh_to_static_mesh(
 ///
 /// Returns [`VulkanAssetMeshError`] when geometry, transform values or the
 /// static Vulkan input contract cannot represent the source model.
-pub fn project_msh_to_static_mesh_in_xz_frame(
+pub fn project_msh_to_static_mesh_in_xy_frame(
     model: &ModelAsset,
-    frame: VulkanStaticXzFrame,
+    frame: VulkanStaticXyFrame,
     translation: [f32; 3],
     scale: [f32; 3],
 ) -> Result<VulkanStaticMesh, VulkanAssetMeshError> {
@@ -146,7 +146,7 @@ pub fn project_msh_to_static_mesh_in_xz_frame(
                 color: [0.82, 0.72, 0.31],
                 // Iron3D stores Res5 UV0 as signed fixed point with 1/1024 units.
                 // Models that omit this optional stream retain the static viewer's
-                // XZ planar fallback instead of receiving fabricated raw UV values.
+                // XY planar fallback instead of receiving fabricated raw UV values.
                 uv: model
                     .uv0
                     .as_ref()
@@ -176,7 +176,7 @@ pub fn project_msh_to_static_mesh_in_xz_frame(
 /// # Errors
 ///
 /// Returns [`VulkanAssetMeshError`] if the terrain has no triangles, contains
-/// non-finite positions, has no usable XZ extent, or references data outside
+/// non-finite positions, has no usable XY extent, or references data outside
 /// the current static Vulkan input contract.
 pub fn project_land_msh_to_static_mesh(
     terrain: &LandMeshDocument,
@@ -195,20 +195,20 @@ pub fn project_land_msh_to_static_mesh(
         return Err(VulkanAssetMeshError::EmptyGeometry);
     }
 
-    let (min_x, max_x, min_z, max_z) = static_mesh_xz_bounds(&terrain.positions, &indices)?;
+    let (min_x, max_x, min_y, max_y) = static_mesh_xy_bounds(&terrain.positions, &indices)?;
-    let frame = VulkanStaticXzFrame::from_bounds(min_x, max_x, min_z, max_z)?;
+    let frame = VulkanStaticXyFrame::from_bounds(min_x, max_x, min_y, max_y)?;
-    project_land_msh_to_static_mesh_in_xz_frame(terrain, frame)
+    project_land_msh_to_static_mesh_in_xy_frame(terrain, frame)
 }
 
-/// Projects `Land.msh` terrain geometry into a shared diagnostic XZ frame.
+/// Projects `Land.msh` terrain geometry into a shared diagnostic XY frame.
 ///
 /// # Errors
 ///
 /// Returns [`VulkanAssetMeshError`] when terrain geometry or the static Vulkan
 /// input contract cannot represent the source mesh.
-pub fn project_land_msh_to_static_mesh_in_xz_frame(
+pub fn project_land_msh_to_static_mesh_in_xy_frame(
     terrain: &LandMeshDocument,
-    frame: VulkanStaticXzFrame,
+    frame: VulkanStaticXyFrame,
 ) -> Result<VulkanStaticMesh, VulkanAssetMeshError> {
     let mut indices = Vec::with_capacity(
         terrain
@@ -298,14 +298,14 @@ fn static_model_indices_and_ranges(
     Ok((indices, draw_ranges))
 }
 
-fn static_mesh_xz_bounds(
+fn static_mesh_xy_bounds(
     positions: &[[f32; 3]],
     indices: &[u16],
 ) -> Result<(f32, f32, f32, f32), VulkanAssetMeshError> {
     let mut min_x = f32::INFINITY;
     let mut max_x = f32::NEG_INFINITY;
-    let mut min_z = f32::INFINITY;
+    let mut min_y = f32::INFINITY;
-    let mut max_z = f32::NEG_INFINITY;
+    let mut max_y = f32::NEG_INFINITY;
     for &index in indices {
         let position = positions
             .get(usize::from(index))
@@ -315,10 +315,10 @@ fn static_mesh_xz_bounds(
         }
         min_x = min_x.min(position[0]);
         max_x = max_x.max(position[0]);
-        min_z = min_z.min(position[2]);
+        min_y = min_y.min(position[1]);
-        max_z = max_z.max(position[2]);
+        max_y = max_y.max(position[1]);
     }
-    Ok((min_x, max_x, min_z, max_z))
+    Ok((min_x, max_x, min_y, max_y))
 }
 
 #[cfg(test)]
@@ -356,13 +356,13 @@ mod tests {
     }
 
     #[test]
-    fn projects_xz_geometry_and_applies_base_vertex() {
+    fn projects_xy_geometry_and_applies_base_vertex() {
         let mesh = project_msh_to_static_mesh(&model(
             vec![
-                [99.0, 0.0, 99.0],
+                [99.0, 99.0, 0.0],
-                [-2.0, 4.0, -1.0],
+                [-2.0, -1.0, 4.0],
-                [2.0, 8.0, -1.0],
+                [2.0, -1.0, 8.0],
-                [-2.0, 1.0, 3.0],
+                [-2.0, 3.0, 1.0],
             ],
             vec![0, 1, 2],
             vec![batch(0, 3, 1)],
@@ -448,10 +448,10 @@ mod tests {
                 slots_raw: Vec::new(),
             },
             positions: vec![
-                [-2.0, 5.0, -1.0],
+                [-2.0, -1.0, 5.0],
-                [2.0, 3.0, -1.0],
+                [2.0, -1.0, 3.0],
-                [-2.0, 9.0, 3.0],
+                [-2.0, 3.0, 9.0],
-                [2.0, 1.0, 3.0],
+                [2.0, 3.0, 1.0],
             ],
             normals: Vec::new(),
             uv0: vec![[1024, -512], [0, 2048], [-1024, 512], [512, 0]],

adapters/fparkan-render-vulkan/src/ffi.rs

@@ -40,9 +40,9 @@ mod swapchain_resources;
 mod validation;
 
 pub use self::asset_mesh::{
-    project_land_msh_to_static_mesh, project_land_msh_to_static_mesh_in_xz_frame,
+    project_land_msh_to_static_mesh, project_land_msh_to_static_mesh_in_xy_frame,
-    project_msh_to_static_mesh, project_msh_to_static_mesh_in_xz_frame, VulkanAssetMeshError,
+    project_msh_to_static_mesh, project_msh_to_static_mesh_in_xy_frame, VulkanAssetMeshError,
-    VulkanStaticXzFrame,
+    VulkanStaticXyFrame,
 };
 pub use self::capabilities::{
     probe_vulkan_runtime_capabilities, probe_vulkan_runtime_capabilities_for_request,

apps/fparkan-cli/src/main.rs

@@ -25,8 +25,7 @@ use fparkan_assets::{
     decode_mission_payload, extend_graph_report_with_visual_dependencies, TmaProfile,
 };
 use fparkan_corpus::{discover, render_report_json, report, DiscoverOptions};
-use fparkan_inspection::inspect_archive_file;
+use fparkan_inspection::{inspect_archive_file, inspect_land_msh_bounds_file, ArchiveInspection};
-use fparkan_inspection::ArchiveInspection;
 use fparkan_path::{normalize_relative, PathPolicy};
 use fparkan_prototype::build_prototype_graph_report;
 use fparkan_resource::{resource_name, CachedResourceRepository};
@@ -42,6 +41,7 @@ const ARCHIVE_INSPECT_SCHEMA: &str = "fparkan-archive-inspect-v1";
 const PROTOTYPE_INSPECT_SCHEMA: &str = "fparkan-prototype-inspect-v1";
 const MISSION_GRAPH_SCHEMA: &str = "fparkan-mission-graph-v1";
 const MISSION_INSPECT_SCHEMA: &str = "fparkan-mission-inspect-v1";
+const TERRAIN_INSPECT_SCHEMA: &str = "fparkan-terrain-inspect-v1";
 
 #[derive(Serialize)]
 struct ArchiveInspectOutput<'a> {
@@ -114,6 +114,15 @@ struct MissionObjectInspectOutput {
     scale: [f32; 3],
 }
 
+#[derive(Serialize)]
+struct TerrainInspectOutput {
+    schema_version: &'static str,
+    path: String,
+    positions: usize,
+    min: [f32; 3],
+    max: [f32; 3],
+}
+
 #[derive(Serialize)]
 struct GraphFailureOutput {
     root_index: usize,
@@ -178,6 +187,10 @@ fn run(args: &[String]) -> Result<(), String> {
             let rest = strip_format_json(rest)?;
             inspect_mission(&rest)
         }
+        [domain, command, rest @ ..] if domain == "terrain" && command == "inspect" => {
+            let rest = strip_format_json(rest)?;
+            inspect_terrain(&rest)
+        }
         _ => Err(usage()),
     }
 }
@@ -400,6 +413,22 @@ fn inspect_archive(args: &[String]) -> Result<(), String> {
     }
 }
 
+fn inspect_terrain(args: &[String]) -> Result<(), String> {
+    let path = parse_file_path(args, "terrain inspect")?;
+    let bounds = inspect_land_msh_bounds_file(&path)?;
+    println!(
+        "{}",
+        serialize_json(&TerrainInspectOutput {
+            schema_version: TERRAIN_INSPECT_SCHEMA,
+            path: path.display().to_string(),
+            positions: bounds.positions,
+            min: bounds.min,
+            max: bounds.max,
+        })?
+    );
+    Ok(())
+}
+
 fn archive_inspect_json(
     path: &str,
     kind: &str,
@@ -416,10 +445,14 @@ fn archive_inspect_json(
 }
 
 fn parse_archive_path(args: &[String]) -> Result<PathBuf, String> {
+    parse_file_path(args, "archive inspect")
+}
+
+fn parse_file_path(args: &[String], command: &str) -> Result<PathBuf, String> {
     match args {
         [path] => Ok(PathBuf::from(path)),
         [flag, path] if flag == "--file" => Ok(PathBuf::from(path)),
-        _ => Err("archive inspect requires <file> or --file <file>".to_string()),
+        _ => Err(format!("{command} requires <file> or --file <file>")),
     }
 }
 
@@ -472,7 +505,7 @@ fn prototype_graph_requiredness_label(
 }
 
 fn usage() -> String {
-    "usage: fparkan corpus discover|validate --root <path> [--format json] | archive inspect <file> [--format json] | prototype inspect --root <path> --key <key> [--format json] | mission graph|inspect --root <path> --mission <path> [--format json]".to_string()
+    "usage: fparkan corpus discover|validate --root <path> [--format json] | archive inspect <file> [--format json] | terrain inspect <Land.msh> [--format json] | prototype inspect --root <path> --key <key> [--format json] | mission graph|inspect --root <path> --mission <path> [--format json]".to_string()
 }
 
 #[cfg(test)]
@@ -584,4 +617,21 @@ mod tests {
             "{\"schema_version\":\"fparkan-mission-inspect-v1\",\"mission\":\"MISSIONS/test/data.tma\",\"objects\":[{\"index\":1,\"resource\":\"unit.dat\",\"position\":[1.0,2.0,3.0],\"orientation_raw\":[4.0,5.0,6.0],\"scale\":[7.0,8.0,9.0]}]}"
         );
     }
+
+    #[test]
+    fn terrain_inspect_output_retains_axis_bounds() {
+        let json = serialize_json(&TerrainInspectOutput {
+            schema_version: TERRAIN_INSPECT_SCHEMA,
+            path: "DATA/MAPS/AutoMAP/Land.msh".to_string(),
+            positions: 3,
+            min: [-1.0, -2.0, -3.0],
+            max: [4.0, 5.0, 6.0],
+        })
+        .expect("serialize terrain inspection");
+
+        assert_eq!(
+            json,
+            "{\"schema_version\":\"fparkan-terrain-inspect-v1\",\"path\":\"DATA/MAPS/AutoMAP/Land.msh\",\"positions\":3,\"min\":[-1.0,-2.0,-3.0],\"max\":[4.0,5.0,6.0]}"
+        );
+    }
 }

apps/fparkan-game/src/main.rs

@@ -30,10 +30,10 @@ use fparkan_render::{
     RenderSnapshotDraw,
 };
 use fparkan_render_vulkan::{
-    project_land_msh_to_static_mesh_in_xz_frame, project_msh_to_static_mesh_in_xz_frame,
+    project_land_msh_to_static_mesh_in_xy_frame, project_msh_to_static_mesh_in_xy_frame,
     VulkanPlanningBackend, VulkanSmokeFrameOutcome, VulkanSmokeRenderer,
     VulkanSmokeRendererCreateInfo, VulkanStaticMaterial, VulkanStaticMesh, VulkanStaticTexture,
-    VulkanStaticXzFrame,
+    VulkanStaticXyFrame,
 };
 use fparkan_runtime::{
     create, frame, load_mission, load_mission_static_preview, load_mission_static_preview_roots,
@@ -206,7 +206,7 @@ struct StaticPreviewScene {
 }
 
 /// Projects the mission terrain plus every MSH component of the explicitly
-/// bounded static-preview root into one diagnostic XZ frame.
+/// bounded static-preview root into one diagnostic XY frame.
 ///
 /// This intentionally takes only the first MAT0 texture request for each MSH
 /// batch selector. The terrain uses an explicit white diagnostic texture;
@@ -220,7 +220,7 @@ fn static_preview_mesh_and_materials(
     let terrain_mesh = terrain
         .source_mesh()
         .ok_or_else(|| "runtime terrain does not retain its validated source mesh".to_string())?;
-    let frame = static_preview_xz_frame(assets, terrain, roots)?;
+    let frame = static_preview_xy_frame(assets, terrain, roots)?;
     let mut mesh = VulkanStaticMesh {
         vertices: Vec::new(),
         indices: Vec::new(),
@@ -234,7 +234,7 @@ fn static_preview_mesh_and_materials(
             rgba8: vec![255, 255, 255, 255],
         },
     }];
-    let terrain_component = project_land_msh_to_static_mesh_in_xz_frame(terrain_mesh, frame)
+    let terrain_component = project_land_msh_to_static_mesh_in_xy_frame(terrain_mesh, frame)
         .map_err(|err| format!("project mission terrain for Vulkan: {err}"))?;
     append_static_preview_component(&mut mesh, terrain_component, &[(0, 0)])?;
     let mut mesh_components = 0;
@@ -251,7 +251,7 @@ fn static_preview_mesh_and_materials(
             let model = assets.model_by_id(model_id).ok_or_else(|| {
                 format!("static preview visual {visual_id:?} references unknown model {model_id:?}")
             })?;
-            let component = project_msh_to_static_mesh_in_xz_frame(
+            let component = project_msh_to_static_mesh_in_xy_frame(
                 &model.validated,
                 frame,
                 root.position,
@@ -275,20 +275,20 @@ fn static_preview_mesh_and_materials(
     })
 }
 
-fn static_preview_xz_frame(
+fn static_preview_xy_frame(
     assets: &MissionAssets,
     terrain: &TerrainWorld,
     roots: &[MissionObjectDraft],
-) -> Result<VulkanStaticXzFrame, String> {
+) -> Result<VulkanStaticXyFrame, String> {
     let mut min_x = f32::INFINITY;
     let mut max_x = f32::NEG_INFINITY;
-    let mut min_z = f32::INFINITY;
+    let mut min_y = f32::INFINITY;
-    let mut max_z = f32::NEG_INFINITY;
+    let mut max_y = f32::NEG_INFINITY;
     let terrain_positions = terrain
         .source_positions()
         .ok_or_else(|| "runtime terrain does not retain source positions".to_string())?;
     for position in terrain_positions {
-        extend_static_preview_xz_bounds(*position, &mut min_x, &mut max_x, &mut min_z, &mut max_z)?;
+        extend_static_preview_xy_bounds(*position, &mut min_x, &mut max_x, &mut min_y, &mut max_y)?;
     }
     for (object_index, root) in roots.iter().enumerate() {
         if !root
@@ -314,7 +314,7 @@ fn static_preview_xz_frame(
                 format!("static preview visual {visual_id:?} references unknown model {model_id:?}")
             })?;
             for position in &model.validated.positions {
-                extend_static_preview_xz_bounds(
+                extend_static_preview_xy_bounds(
                     [
                         position[0] * root.scale[0] + root.position[0],
                         position[1] * root.scale[1] + root.position[1],
@@ -322,30 +322,30 @@ fn static_preview_xz_frame(
                     ],
                     &mut min_x,
                     &mut max_x,
-                    &mut min_z,
+                    &mut min_y,
-                    &mut max_z,
+                    &mut max_y,
                 )?;
             }
         }
     }
-    VulkanStaticXzFrame::from_bounds(min_x, max_x, min_z, max_z)
+    VulkanStaticXyFrame::from_bounds(min_x, max_x, min_y, max_y)
-        .map_err(|err| format!("build static preview XZ frame: {err}"))
+        .map_err(|err| format!("build static preview XY frame: {err}"))
 }
 
-fn extend_static_preview_xz_bounds(
+fn extend_static_preview_xy_bounds(
     position: [f32; 3],
     min_x: &mut f32,
     max_x: &mut f32,
-    min_z: &mut f32,
+    min_y: &mut f32,
-    max_z: &mut f32,
+    max_y: &mut f32,
 ) -> Result<(), String> {
     if !position.iter().all(|value| value.is_finite()) {
-        return Err("static preview contains a non-finite XZ position".to_string());
+        return Err("static preview contains a non-finite XY position".to_string());
     }
     *min_x = min_x.min(position[0]);
     *max_x = max_x.max(position[0]);
-    *min_z = min_z.min(position[2]);
+    *min_y = min_y.min(position[1]);
-    *max_z = max_z.max(position[2]);
+    *max_y = max_y.max(position[1]);
     Ok(())
 }
 

crates/fparkan-inspection/src/lib.rs

@@ -142,6 +142,17 @@ pub struct MapInspection {
     pub grid_height: u32,
 }
 
+/// Axis-aligned position bounds of a decoded `Land.msh`.
+#[derive(Clone, Debug, PartialEq)]
+pub struct LandMeshBoundsInspection {
+    /// Number of source positions covered by the bounds.
+    pub positions: usize,
+    /// Per-axis inclusive minimum position.
+    pub min: [f32; 3],
+    /// Per-axis inclusive maximum position.
+    pub max: [f32; 3],
+}
+
 /// Supported land file kinds.
 #[derive(Clone, Copy, Debug, Eq, PartialEq)]
 pub enum LandFileKind {
@@ -450,6 +461,46 @@ pub fn load_land_msh_from_path(path: &Path) -> Result<LandMeshDocument, String>
     decode_land_msh(&document).map_err(|err| err.to_string())
 }
 
+/// Inspects the source-coordinate bounds of a standalone `Land.msh` file.
+///
+/// # Errors
+///
+/// Returns a string error when the file cannot be read, decoded, or contains
+/// no finite source positions.
+pub fn inspect_land_msh_bounds_file(path: &Path) -> Result<LandMeshBoundsInspection, String> {
+    let mesh = load_land_msh_from_path(path)?;
+    inspect_land_msh_bounds(&mesh)
+}
+
+/// Computes source-coordinate bounds for an already validated `Land.msh`.
+///
+/// # Errors
+///
+/// Returns a string error when the mesh has no finite source positions.
+pub fn inspect_land_msh_bounds(
+    mesh: &LandMeshDocument,
+) -> Result<LandMeshBoundsInspection, String> {
+    let mut min = [f32::INFINITY; 3];
+    let mut max = [f32::NEG_INFINITY; 3];
+    for position in &mesh.positions {
+        if !position.iter().all(|value| value.is_finite()) {
+            return Err("Land.msh contains a non-finite source position".to_string());
+        }
+        for axis in 0..3 {
+            min[axis] = min[axis].min(position[axis]);
+            max[axis] = max[axis].max(position[axis]);
+        }
+    }
+    if mesh.positions.is_empty() {
+        return Err("Land.msh contains no source positions".to_string());
+    }
+    Ok(LandMeshBoundsInspection {
+        positions: mesh.positions.len(),
+        min,
+        max,
+    })
+}
+
 fn inspect_land_msh(document: &NresDocument) -> Result<MapInspection, String> {
     let land_msh = decode_land_msh(document).map_err(|err| err.to_string())?;
     Ok(MapInspection {
@@ -599,6 +650,7 @@ fn resource_parse_diagnostic(
 #[cfg(test)]
 mod tests {
     use super::*;
+    use fparkan_terrain_format::TerrainSlotTable;
     use std::io::Write as _;
     use std::path::PathBuf;
 
@@ -709,6 +761,31 @@ mod tests {
         assert_eq!(selected.image.rgba8, vec![0x11, 0x22, 0x33, 0x40]);
     }
 
+    #[test]
+    fn land_mesh_bounds_preserve_each_source_axis() {
+        let mesh = LandMeshDocument {
+            streams: Vec::new(),
+            nodes_raw: Vec::new(),
+            slots: TerrainSlotTable {
+                header_raw: Vec::new(),
+                slots_raw: Vec::new(),
+            },
+            positions: vec![[4.0, -2.0, 8.0], [-3.0, 6.0, 1.0]],
+            normals: Vec::new(),
+            uv0: Vec::new(),
+            accelerator: Vec::new(),
+            aux14: Vec::new(),
+            aux18: Vec::new(),
+            faces: Vec::new(),
+        };
+
+        let bounds = inspect_land_msh_bounds(&mesh).expect("bounds");
+
+        assert_eq!(bounds.positions, 2);
+        assert_eq!(bounds.min, [-3.0, -2.0, 1.0]);
+        assert_eq!(bounds.max, [4.0, 6.0, 8.0]);
+    }
+
     fn temp_dir(name: &str) -> PathBuf {
         let base = PathBuf::from("/tmp")
             .join("fparkan-inspection-tests")

docs/tomes/05-render.md

@@ -938,7 +938,7 @@ from a runtime slot or draw order.
 
 `fparkan-game --backend static-vulkan` is an explicit native-window experiment,
 not the default planning path. It visits only the first mission root, selects
-every prepared MSH component of that root, merges their static XZ clip-space
+every prepared MSH component of that root, merges their static XY clip-space
 geometry, and renders a requested number of frames through
 `VulkanSmokeRenderer`; teardown rejects validation warnings/errors and reports
 swapchain/readback telemetry. For each used `Batch20.material_index`, it resolves
@@ -984,7 +984,7 @@ The bounded native preview now retains the already validated `Land.msh` inside
 `TerrainWorld`; this lets the application consume source geometry through the
 runtime boundary instead of decoding archive formats a second time. It merges
 one terrain component with the first TMA root's 14 reachable MSH components in
-one explicit top-down XZ frame. The frame is computed from terrain positions
+one explicit top-down XY frame. The frame is computed from terrain positions
 and the root models after applying only the decoded TMA `position` and `scale`.
 Raw TMA orientation is deliberately excluded: its convention is not proven.
 
@@ -1005,7 +1005,7 @@ geometry and descriptor set changed; it is not an original-frame comparison.
 
 The native bridge now combines every mesh-backed visual of each selected root,
 using that root's preserved TMA `position` and `scale` in the shared diagnostic
-XZ frame. It reports the actual selected root count as `preview_roots`, rather
+XY frame. It reports the actual selected root count as `preview_roots`, rather
 than implying that all mission objects are rendered. Raw orientation, original
 camera/frustum and visibility remain unresolved.
 
@@ -1014,8 +1014,8 @@ in 59.7 seconds: 25 submitted MSH components, one terrain component and 26
 descriptors on the native 1280x720 two-image swapchain, with validation
 warnings/errors `0/0`. The readback FNV-1a remained
 `10739087367165646439`, equal to the one-root terrain/root run. That equality
-does **not** prove the second root is visible or equivalent: it is recorded as
+does **not** prove the second root is visible or equivalent: it was recorded as
-a camera/frustum/overlap investigation target, not hidden as a parity result.
+an investigation target, not hidden as a parity result.
 
 The reproducible `fparkan-cli mission inspect` probe closes two tempting but
 incorrect explanations for that equality. GOG `Autodemo.00` root 0 is
@@ -1023,11 +1023,20 @@ incorrect explanations for that equality. GOG `Autodemo.00` root 0 is
 `w_s_wlk1.dat` at `(479.12396, 795.95337, 1.6228507)`; therefore the TMA data
 is neither duplicate nor co-located. Separately, the Vulkan static submit loop
 calls `cmd_draw_indexed` for every prepared draw range and its depth comparison
-is `LESS_OR_EQUAL`. The unresolved equality is consequently evidence about the
+is `LESS_OR_EQUAL`. A later direct `Land.msh` bounds probe identified the actual
-diagnostic camera/projection or visibility framing, not grounds to patch a
+static-viewer defect: GOG `AutoMAP/Land.msh` spans X/Y
-missing draw or a `LESS` depth bug. The inspector intentionally reports raw
+`0..1190.6976` but Z only `0..94.50981`; the same TMA objects use X/Y for their
-orientation as well as position and scale so later camera/transform work can
+world placement and a small Z height. The old XZ CPU frame discarded the second
-be checked against the original mission bytes.
+horizontal TMA component and treated height as the screen axis. The renderer now
+uses a shared XY CPU frame and retains Z as geometry height. This proves only
+the source-axis convention needed by the diagnostic bridge; it does not recover
+the original camera, orientation order, culling or projection matrix.
+
+The new `fparkan-cli terrain inspect <Land.msh>` exposes these three-axis source
+bounds without a renderer. The first XY GPU rechecks were intentionally bounded
+to 120 seconds but remained at the existing `Graph` loading checkpoint and were
+terminated without a native frame/report; therefore no new readback hash or GPU
+acceptance result is claimed for the corrected projection yet.
 
 ### Camera ownership boundary from the GOG renderer
 
@@ -1051,7 +1060,7 @@ This establishes that original camera creation/selection is Terrain-owned and
 not a field that can safely be inferred from a TMA transform. It does **not**
 yet establish world-to-view matrix layout, FOV, near/far values, projection
 handedness, or initial mission camera selection. The Vulkan path must therefore
-continue to label its XZ projection as diagnostic until a dynamic capture or
+continue to label its XY projection as diagnostic until a dynamic capture or
 further Terrain disassembly proves these contracts.
 
 The public `World3D.dll!stdSetCurrentCamera` is a one-pointer `__stdcall`
@@ -1070,7 +1079,7 @@ matrix convention; they must not be treated as a usable renderer ABI yet.
 
 `Land.msh` использует отдельный geometry-only bridge: validated `TerrainFace28`
 сохраняет source triangle order, а его positions и packed UV0 попадают в тот же
-static vertex/index upload path. Для текущего диагностического viewer XZ bounds
+static vertex/index upload path. Для текущего диагностического viewer XY bounds
 нормализуются в clip-space, packed UV0 декодируется как signed `int16 / 1024`.
 Один static draw range намеренно не трактует `material_tag`, surface mask, slots
 или auxiliary streams как material/pipeline state: их связь с original terrain