修复土星星环

frontend/src/components/BodyViewer.tsx

@@ -1,5 +1,5 @@
 import { useRef, useMemo, useState, useEffect, Suspense } from 'react';
-import { Mesh } from 'three';
+import { Mesh, Group, DoubleSide } from 'three';
 import * as THREE from 'three';
 import { useGLTF, useTexture } from '@react-three/drei';
 import { useFrame } from '@react-three/fiber';
@@ -12,10 +12,75 @@ interface BodyViewerProps {
   disableGlow?: boolean; // 禁用光晕效果(用于详情视图)
 }
 
-// Reusable component to render just the 3D model/mesh of a celestial body
+// Planetary Rings component - handles texture-based rings
+function PlanetaryRings({ texturePath, planetRadius }: { texturePath?: string | null, planetRadius: number }) {
+  const texture = texturePath ? useTexture(texturePath) : null;
+  const meshRef = useRef<Mesh>(null);
+  
+  // Dynamic ring dimensions based on planet size
+  // Standard Saturn proportions: Inner ~1.1 R, Outer ~2.3 R
+  const innerRadius = planetRadius * 1.05;
+  const outerRadius = planetRadius * 2.2;
+
+  // Custom geometry with Polar UV mapping for strip textures
+  const geometry = useMemo(() => {
+    if (!texturePath) return null;
+
+    const geo = new THREE.RingGeometry(innerRadius, outerRadius, 64);
+    const pos = geo.attributes.position;
+    const uv = geo.attributes.uv;
+
+    // Manually remap UVs to be polar:
+    // We map normalized radius to BOTH U and V coordinates.
+    // This allows the texture to work whether it's a horizontal strip OR a vertical strip.
+    // - If horizontal strip: U varies with radius (correct), V varies (doesn't matter as strip is uniform vertically)
+    // - If vertical strip: V varies with radius (correct), U varies (doesn't matter as strip is uniform horizontally)
+    for (let i = 0; i < pos.count; i++) {
+      const x = pos.getX(i);
+      const y = pos.getY(i);
+      
+      // Calculate radius from center
+      const r = Math.sqrt(x * x + y * y);
+      
+      // Normalize radius: 0 at inner, 1 at outer
+      // Clamp to ensure floating point errors don't break texture wrapping
+      const normalizedR = Math.max(0, Math.min(1, (r - innerRadius) / (outerRadius - innerRadius)));
+      
+      // Map to UV (same value for both axes to support H/V strips)
+      uv.setXY(i, normalizedR, normalizedR);
+    }
+    
+    geo.attributes.uv.needsUpdate = true;
+    return geo;
+  }, [texturePath, innerRadius, outerRadius]);
+
+  if (texture && geometry) {
+    return (
+      <mesh 
+        ref={meshRef} 
+        rotation={[-Math.PI / 2, 0, 0]} 
+        geometry={geometry}
+        receiveShadow 
+        castShadow
+      >
+        <meshStandardMaterial
+          map={texture}
+          transparent
+          opacity={0.9}
+          side={DoubleSide}
+          color="#ffffff"
+          roughness={0.8}
+        />
+      </mesh>
+    );
+  }
+
+  return null;
+}
 export function BodyViewer({ body, disableGlow = false }: BodyViewerProps) {
   const meshRef = useRef<Mesh>(null);
   const [texturePath, setTexturePath] = useState<string | null | undefined>(undefined);
+  const [ringTexturePath, setRingTexturePath] = useState<string | null | undefined>(undefined);
   const [modelPath, setModelPath] = useState<string | null | undefined>(undefined);
   const [modelScale, setModelScale] = useState<number>(1.0);
   const [loadError, setLoadError] = useState<boolean>(false);
@@ -62,31 +127,62 @@ export function BodyViewer({ body, disableGlow = false }: BodyViewerProps) {
     setLoadError(false);
     setModelPath(undefined);
     setTexturePath(undefined);
+    setRingTexturePath(undefined);
 
     const loadResources = async () => {
       try {
         const response = await fetchBodyResources(body.id, body.type === 'probe' ? 'model' : 'texture');
         if (response.resources.length > 0) {
-          const mainResource = response.resources[0];
-          const fullPath = `/upload/${mainResource.file_path}`;
           
           if (body.type === 'probe') {
+             const mainResource = response.resources[0];
+             const fullPath = `/upload/${mainResource.file_path}`;
              useGLTF.preload(fullPath); // Preload GLTF
              setModelPath(fullPath);
              setModelScale(mainResource.extra_data?.scale || 1.0);
           } else {
-            setTexturePath(fullPath);
+            // Find main texture
+            const mainTexture = response.resources.find(
+              (r) => !r.file_path.includes('atmosphere') && 
+                     !r.file_path.includes('night') &&
+                     !r.file_path.includes('_ring')
+            );
+            
+            // Find ring texture
+            const bodyNameLower = body.name.toLowerCase();
+            const ringTexture = response.resources.find(
+              (r) => r.file_path.toLowerCase().includes(`${bodyNameLower}_ring`) || 
+                     (r.file_path.toLowerCase().includes('ring') && r.file_path.toLowerCase().includes(bodyNameLower))
+            );
+
+            if (mainTexture) {
+              setTexturePath(`/upload/${mainTexture.file_path}`);
+            } else {
+              setTexturePath(null);
+            }
+            
+            if (ringTexture) {
+              setRingTexturePath(`/upload/${ringTexture.file_path}`);
+            } else {
+              setRingTexturePath(null);
+            }
           }
         } else {
           // No resources found
           if (body.type === 'probe') setModelPath(null);
-          else setTexturePath(null);
+          else {
+            setTexturePath(null);
+            setRingTexturePath(null);
+          }
         }
       } catch (err) {
         console.error(`Failed to load resource for ${body.name}:`, err);
         setLoadError(true);
         if (body.type === 'probe') setModelPath(null);
-        else setTexturePath(null);
+        else {
+          setTexturePath(null);
+          setRingTexturePath(null);
+        }
       }
     };
     loadResources();
@@ -115,6 +211,7 @@ export function BodyViewer({ body, disableGlow = false }: BodyViewerProps) {
         emissive={appearance.emissive}
         emissiveIntensity={appearance.emissiveIntensity}
         texturePath={texturePath}
+        ringTexturePath={ringTexturePath}
         meshRef={meshRef}
         disableGlow={disableGlow}
       />
@@ -179,12 +276,13 @@ function ProbeModelViewer({ modelPath, modelScale }: { modelPath: string; modelS
 }
 
 // Sub-component for Planet models
-function PlanetModelViewer({ body, size, emissive, emissiveIntensity, texturePath, meshRef, disableGlow = false }: {
+function PlanetModelViewer({ body, size, emissive, emissiveIntensity, texturePath, ringTexturePath, meshRef, disableGlow = false }: {
   body: CelestialBodyType;
   size: number;
   emissive: string;
   emissiveIntensity: number;
   texturePath: string | null;
+  ringTexturePath?: string | null;
   meshRef: React.RefObject<Mesh>;
   disableGlow?: boolean;
 }) {
@@ -331,39 +429,6 @@ function PlanetModelViewer({ body, size, emissive, emissiveIntensity, texturePat
     );
   }
 
-  // Saturn Rings component - multiple rings for band effect
-  function SaturnRings() {
-    return (
-      <group rotation={[Math.PI / 2, 0, 0]}>
-        {/* Inner bright ring */}
-        <mesh>
-          <ringGeometry args={[1.4, 1.6, 32]} />
-          <meshBasicMaterial color="#D4B896" transparent opacity={0.7} side={THREE.DoubleSide} />
-        </mesh>
-        {/* Middle darker band */}
-        <mesh>
-          <ringGeometry args={[1.6, 1.75, 32]} />
-          <meshBasicMaterial color="#8B7355" transparent opacity={0.5} side={THREE.DoubleSide} />
-        </mesh>
-        {/* Outer bright ring */}
-        <mesh>
-          <ringGeometry args={[1.75, 2.0, 32]} />
-          <meshBasicMaterial color="#C4A582" transparent opacity={0.6} side={THREE.DoubleSide} />
-        </mesh>
-        {/* Cassini Division (gap) */}
-        <mesh>
-          <ringGeometry args={[2.0, 2.05, 32]} />
-          <meshBasicMaterial color="#000000" transparent opacity={0.2} side={THREE.DoubleSide} />
-        </mesh>
-        {/* A Ring (outer) */}
-        <mesh>
-          <ringGeometry args={[2.05, 2.2, 32]} />
-          <meshBasicMaterial color="#B89968" transparent opacity={0.5} side={THREE.DoubleSide} />
-        </mesh>
-      </group>
-    );
-  }
-
   return (
     <group>
       {/* Use irregular nucleus for comets, regular sphere for others */}
@@ -395,8 +460,10 @@ function PlanetModelViewer({ body, size, emissive, emissiveIntensity, texturePat
         </mesh>
       )}
 
-      {/* Saturn Rings */}
-      {body.id === '699' && <SaturnRings />}
+      {/* Planetary Rings: Render ONLY if texture exists */}
+      {ringTexturePath && (
+        <PlanetaryRings texturePath={ringTexturePath} planetRadius={size} />
+      )}
 
       {/* Sun glow effect - multi-layer scattered light (仅在非禁用光晕模式下显示) */}
       {body.type === 'star' && !disableGlow && (

frontend/src/components/CelestialBody.tsx

@@ -19,64 +19,72 @@ interface CelestialBodyProps {
   onBodySelect?: (body: CelestialBodyType) => void;
 }
 
-// Saturn Rings component - multiple rings for band effect
-function SaturnRings() {
+// Planetary Rings component - handles texture-based rings
+function PlanetaryRings({ texturePath, planetRadius }: { texturePath?: string | null, planetRadius: number }) {
+  const texture = texturePath ? useTexture(texturePath) : null;
+  const meshRef = useRef<Mesh>(null);
+  
+  // Dynamic ring dimensions based on planet size
+  // Standard Saturn proportions: Inner ~1.1 R, Outer ~2.3 R
+  const innerRadius = planetRadius * 1.05;
+  const outerRadius = planetRadius * 2.2;
+
+  // Custom geometry with Polar UV mapping for strip textures
+  const geometry = useMemo(() => {
+    if (!texturePath) return null;
+
+    const geo = new THREE.RingGeometry(innerRadius, outerRadius, 64);
+    const pos = geo.attributes.position;
+    const uv = geo.attributes.uv;
+
+    // Manually remap UVs to be polar:
+    // We map normalized radius to BOTH U and V coordinates.
+    // This allows the texture to work whether it's a horizontal strip OR a vertical strip.
+    // - If horizontal strip: U varies with radius (correct), V varies (doesn't matter as strip is uniform vertically)
+    // - If vertical strip: V varies with radius (correct), U varies (doesn't matter as strip is uniform horizontally)
+    for (let i = 0; i < pos.count; i++) {
+      const x = pos.getX(i);
+      const y = pos.getY(i);
+      
+      // Calculate radius from center
+      const r = Math.sqrt(x * x + y * y);
+      
+      // Normalize radius: 0 at inner, 1 at outer
+      // Clamp to ensure floating point errors don't break texture wrapping
+      const normalizedR = Math.max(0, Math.min(1, (r - innerRadius) / (outerRadius - innerRadius)));
+      
+      // Map to UV (same value for both axes to support H/V strips)
+      uv.setXY(i, normalizedR, normalizedR);
+    }
+    
+    geo.attributes.uv.needsUpdate = true;
+    return geo;
+  }, [texturePath, innerRadius, outerRadius]);
+
+  if (texture && geometry) {
     return (
-    <group rotation={[Math.PI / 2, 0, 0]}>
-      {/* Inner bright ring */}
-      <mesh>
-        <ringGeometry args={[1.4, 1.6, 32]} />
-        <meshBasicMaterial
-          color="#D4B896"
+      <mesh 
+        ref={meshRef} 
+        rotation={[-Math.PI / 2, 0, 0]} 
+        geometry={geometry}
+        receiveShadow 
+        castShadow
+      >
+        <meshStandardMaterial
+          map={texture}
           transparent
-          opacity={0.7}
+          opacity={0.9}
           side={DoubleSide}
+          color="#ffffff"
+          roughness={0.8}
         />
       </mesh>
-      {/* Middle darker band */}
-      <mesh>
-        <ringGeometry args={[1.6, 1.75, 32]} />
-        <meshBasicMaterial
-          color="#8B7355"
-          transparent
-          opacity={0.5}
-          side={DoubleSide}
-        />
-      </mesh>
-      {/* Outer bright ring */}
-      <mesh>
-        <ringGeometry args={[1.75, 2.0, 32]} />
-        <meshBasicMaterial
-          color="#C4A582"
-          transparent
-          opacity={0.6}
-          side={DoubleSide}
-        />
-      </mesh>
-      {/* Cassini Division (gap) */}
-      <mesh>
-        <ringGeometry args={[2.0, 2.05, 32]} />
-        <meshBasicMaterial
-          color="#000000"
-          transparent
-          opacity={0.2}
-          side={DoubleSide}
-        />
-      </mesh>
-      {/* A Ring (outer) */}
-      <mesh>
-        <ringGeometry args={[2.05, 2.2, 32]} />
-        <meshBasicMaterial
-          color="#B89968"
-          transparent
-          opacity={0.5}
-          side={DoubleSide}
-        />
-      </mesh>
-    </group>
     );
   }
 
+  return null;
+}
+
 // Planet component with texture
 function Planet({ body, size, emissive, emissiveIntensity, allBodies, isSelected = false, onBodySelect }: {
   body: CelestialBodyType;
@@ -90,6 +98,7 @@ function Planet({ body, size, emissive, emissiveIntensity, allBodies, isSelected
   const meshRef = useRef<Mesh>(null);
   const position = body.positions[0];
   const [texturePath, setTexturePath] = useState<string | null | undefined>(undefined);
+  const [ringTexturePath, setRingTexturePath] = useState<string | null | undefined>(undefined);
 
   // Use smart render position calculation
   const renderPosition = useMemo(() => {
@@ -102,23 +111,40 @@ function Planet({ body, size, emissive, emissiveIntensity, allBodies, isSelected
   useEffect(() => {
     fetchBodyResources(body.id, 'texture')
       .then((response) => {
-        // Find the main texture (not atmosphere or night layers)
+        // 1. Find the main texture (body surface)
+        // Exclude atmosphere, night, and ring textures from main body texture
         const mainTexture = response.resources.find(
-          (r) => !r.file_path.includes('atmosphere') && !r.file_path.includes('night')
+          (r) => !r.file_path.includes('atmosphere') && 
+                 !r.file_path.includes('night') &&
+                 !r.file_path.includes('_ring')
         );
+        
+        // 2. Find the ring texture
+        // Convention: filename contains body name + "_ring" (e.g. "saturn_ring")
+        const bodyNameLower = body.name.toLowerCase();
+        const ringTexture = response.resources.find(
+          (r) => r.file_path.toLowerCase().includes(`${bodyNameLower}_ring`) || 
+                 (r.file_path.toLowerCase().includes('ring') && r.file_path.toLowerCase().includes(bodyNameLower))
+        );
+
         if (mainTexture) {
-          // Construct path for Nginx proxy
-          // file_path is like "texture/2k_sun.jpg", need to add "upload/" prefix
           setTexturePath(`/upload/${mainTexture.file_path}`);
         } else {
           setTexturePath(null);
         }
+
+        if (ringTexture) {
+          setRingTexturePath(`/upload/${ringTexture.file_path}`);
+        } else {
+          setRingTexturePath(null);
+        }
       })
       .catch((err) => {
         if (import.meta.env.DEV) {
           console.error(`Failed to load texture for ${body.name}:`, err);
         }
         setTexturePath(null);
+        setRingTexturePath(null);
       });
   }, [body.id, body.name]);
 
@@ -134,6 +160,7 @@ function Planet({ body, size, emissive, emissiveIntensity, allBodies, isSelected
     emissiveIntensity={emissiveIntensity}
     scaledPos={scaledPos}
     texturePath={texturePath}
+    ringTexturePath={ringTexturePath}
     position={position}
     meshRef={meshRef}
     hasOffset={renderPosition.hasOffset}
@@ -284,13 +311,14 @@ function CometComa({ radius }: { radius: number }) {
 }
 
 // Separate component to handle texture loading
-function PlanetMesh({ body, size, emissive, emissiveIntensity, scaledPos, texturePath, position, meshRef, hasOffset, allBodies, isSelected = false, onBodySelect }: {
+function PlanetMesh({ body, size, emissive, emissiveIntensity, scaledPos, texturePath, ringTexturePath, position, meshRef, hasOffset, allBodies, isSelected = false, onBodySelect }: {
   body: CelestialBodyType;
   size: number;
   emissive: string;
   emissiveIntensity: number;
   scaledPos: { x: number; y: number; z: number };
   texturePath: string | null;
+  ringTexturePath?: string | null;
   position: { x: number; y: number; z: number };
   meshRef: React.RefObject<Mesh>;
   hasOffset: boolean;
@@ -376,8 +404,10 @@ function PlanetMesh({ body, size, emissive, emissiveIntensity, scaledPos, textur
         </mesh>
       )}
 
-      {/* Saturn Rings */}
-      {body.id === '699' && <SaturnRings />}
+      {/* Planetary Rings: Render ONLY if texture exists (Standardized) */}
+      {ringTexturePath && (
+        <PlanetaryRings texturePath={ringTexturePath} planetRadius={size} />
+      )}
 
       {/* Sun glow effect - multi-layer scattered light */}
       {body.type === 'star' && (