植物补光

src/OceanScene.js

@@ -24,6 +24,7 @@ export class OceanScene {
         this.pmremGenerator = null;
         this.renderTarget = null;
         this.sunLight = null;
+        this.vegetationFillLight = null;
         this.composer = null;
         this.bloomPass = null;
         this.cloudGroup = null;
@@ -122,6 +123,10 @@ export class OceanScene {
         this.sunLight.shadow.camera.top = 100;
         this.sunLight.shadow.camera.bottom = -100;
         this.scene.add(this.sunLight);
+
+        this.vegetationFillLight = new THREE.DirectionalLight(0xffb06a, 0.95);
+        this.vegetationFillLight.castShadow = false;
+        this.scene.add(this.vegetationFillLight);
     }
 
     initPostProcessing() {
@@ -339,6 +344,16 @@ export class OceanScene {
             );
         }
 
+        if (this.vegetationFillLight) {
+            const fillDistance = 90;
+            this.vegetationFillLight.position.set(
+                -this.sun.x * fillDistance * 0.45 + 35,
+                Math.max(18, this.sun.y * fillDistance * 0.28 + 24),
+                -this.sun.z * fillDistance * 0.35 + 28
+            );
+            this.vegetationFillLight.intensity = THREE.MathUtils.lerp(0.7, 1.15, THREE.MathUtils.clamp((this.sun.y + 0.2) / 0.9, 0, 1));
+        }
+        
         if (this.renderTarget) {
             this.renderTarget.dispose();
         }

src/VegetationSystem.js

@@ -169,9 +169,40 @@ export class VegetationSystem {
         plant.options.bark.tint = this.jitterColor(plant.options.bark.tint, tintJitter * 0.04);
         plant.options.leaves.tint = this.jitterColor(plant.options.leaves.tint, tintJitter * 0.08);
         plant.generate();
+        this.tunePlantMaterials(plant);
         return plant;
     }
 
+    tunePlantMaterials(plant) {
+        plant.traverse((child) => {
+            if (!child.isMesh || !child.material) return;
+
+            const materials = Array.isArray(child.material) ? child.material : [child.material];
+
+            materials.forEach((material) => {
+                if (material.name === 'branches') {
+                    material.color.multiplyScalar(1.6);
+                    material.emissive = new THREE.Color(0x6a4a34);
+                    material.emissiveIntensity = 0.38;
+                    material.shininess = 26;
+                }
+
+                if (material.name === 'leaves') {
+                    material.color.multiplyScalar(1.2);
+                    material.emissive = new THREE.Color(0x355326);
+                    material.emissiveIntensity = 0.18;
+                    material.alphaTest = 0.42;
+                }
+
+                material.needsUpdate = true;
+            });
+
+            if (child.material?.name === 'branches') {
+                child.receiveShadow = false;
+            }
+        });
+    }
+
     createGrassBladeGeometry(rotationY) {
         const width = 0.24;
         const height = 1.4;