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import React, { Suspense, useRef, useMemo, useEffect } from "react";
import { useGLTF } from "@react-three/drei";
import * as THREE from "three";
import { useStore, type Model3D as Model3DType } from "../store/store.ts";
import {
hueShiftVertexShader,
hueShiftFragmentShader,
} from "../shaders/hueShift.ts";
interface Model3DProps {
model: Model3DType;
}
interface ShaderUniforms {
[uniform: string]: THREE.IUniform;
map: { value: THREE.Texture | null };
hasMap: { value: boolean };
baseColor: { value: THREE.Vector3 };
hueShiftRed: { value: number };
hueShiftGreen: { value: number };
hueShiftBlue: { value: number };
}
interface MeshWithUniforms extends THREE.Mesh {
userData: {
uniforms?: ShaderUniforms;
};
}
const Model3DInner: React.FC<Model3DProps> = ({ model }) => {
const groupRef = useRef<THREE.Group>(null);
const meshRefsRef = useRef<MeshWithUniforms[]>([]);
const { scene } = useGLTF(model.url);
const selectModel = useStore((state) => state.selectModel);
const selectedModelId = useStore((state) => state.selectedModelId);
const isSelected = selectedModelId === model.id;
const { clonedScene, boundingBox, meshes } = useMemo(() => {
const clone = scene.clone(true);
const collectedMeshes: MeshWithUniforms[] = [];
clone.traverse((child) => {
if (child instanceof THREE.Mesh) {
const originalMaterial = child.material;
let textureMap: THREE.Texture | null = null;
let baseColor = new THREE.Vector3(0.8, 0.8, 0.8);
if (originalMaterial instanceof THREE.MeshStandardMaterial) {
textureMap = originalMaterial.map;
if (originalMaterial.color) {
baseColor = new THREE.Vector3(
originalMaterial.color.r,
originalMaterial.color.g,
originalMaterial.color.b,
);
}
} else if (originalMaterial instanceof THREE.MeshBasicMaterial) {
textureMap = originalMaterial.map;
if (originalMaterial.color) {
baseColor = new THREE.Vector3(
originalMaterial.color.r,
originalMaterial.color.g,
originalMaterial.color.b,
);
}
}
const uniforms: ShaderUniforms = {
map: { value: textureMap },
hasMap: { value: !!textureMap },
baseColor: { value: baseColor },
hueShiftRed: { value: 0 },
hueShiftGreen: { value: 0 },
hueShiftBlue: { value: 0 },
};
const shaderMaterial = new THREE.ShaderMaterial({
uniforms,
vertexShader: hueShiftVertexShader,
fragmentShader: hueShiftFragmentShader,
});
child.material = shaderMaterial;
(child as MeshWithUniforms).userData.uniforms = uniforms;
collectedMeshes.push(child as MeshWithUniforms);
}
});
const box = new THREE.Box3().setFromObject(clone);
const size = new THREE.Vector3();
const center = new THREE.Vector3();
box.getSize(size);
box.getCenter(center);
return {
clonedScene: clone,
boundingBox: { size, center },
meshes: collectedMeshes,
};
}, [scene]);
useEffect(() => {
meshRefsRef.current = meshes;
}, [meshes]);
useEffect(() => {
for (const mesh of meshRefsRef.current) {
const uniforms = mesh.userData.uniforms;
if (uniforms) {
uniforms.hueShiftRed.value = model.hueShift.red;
uniforms.hueShiftGreen.value = model.hueShift.green;
uniforms.hueShiftBlue.value = model.hueShift.blue;
}
}
}, [model.hueShift]);
const handleClick = (event: { stopPropagation: () => void }) => {
event.stopPropagation();
selectModel(model.id);
};
const selectionBoxGeometry = useMemo(() => {
if (!boundingBox) return null;
return new THREE.BoxGeometry(
boundingBox.size.x * 1.1,
boundingBox.size.y * 1.1,
boundingBox.size.z * 1.1,
);
}, [boundingBox]);
return (
<group
ref={groupRef}
position={[model.position.x, model.position.y, model.position.z]}
rotation={[model.rotation.x, model.rotation.y, model.rotation.z]}
onClick={handleClick}
>
<primitive object={clonedScene} />
{isSelected && boundingBox && selectionBoxGeometry && (
<lineSegments
position={[
boundingBox.center.x,
boundingBox.center.y,
boundingBox.center.z,
]}
>
<edgesGeometry args={[selectionBoxGeometry]} />
<lineBasicMaterial color="#00ff00" linewidth={2} />
</lineSegments>
)}
</group>
);
};
const MemoizedModel3DInner = React.memo(Model3DInner);
MemoizedModel3DInner.displayName = "Model3DInner";
export const Model3DComponent: React.FC<Model3DProps> = ({ model }) => {
return (
<Suspense fallback={null}>
<MemoizedModel3DInner model={model} />
</Suspense>
);
};
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