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begin work on fixing focus on selected
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| import * as THREE from "three"; | ||
| import React from "react"; | ||
| import {OrbitControls as OrbitControlsImpl} from "three-stdlib/controls/OrbitControls"; | ||
| import {Camera} from "three"; | ||
| import {useObjectInfoStore} from "../../state/objectInfoStore"; | ||
| import {getSelectedMeshDrawRange} from "../mesh_select/getSelectedMeshDrawRange"; | ||
| import {useSelectedObjectStore} from "../../state/selectedObjectStore"; | ||
| import {useModelStore} from "../../state/modelStore"; | ||
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| export const centerViewOnObject = (object: THREE.Object3D, orbitControlsRef: React.RefObject<OrbitControlsImpl>, camera: Camera) => { | ||
| let current_object = useSelectedObjectStore.getState().selectedObject | ||
| let face_index = useObjectInfoStore.getState().faceIndex | ||
| if (orbitControlsRef.current && camera && current_object && face_index) { | ||
| let draw_range = getSelectedMeshDrawRange(object as THREE.Mesh, face_index) | ||
| if (draw_range) { | ||
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| const [rangeId, start, count] = draw_range; | ||
| // get the bounding box of the selected faces | ||
| // Ensure the object has a BufferGeometry | ||
| const geometry = (object as THREE.Mesh).geometry as THREE.BufferGeometry; | ||
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| // Check that the geometry has a position attribute | ||
| if (geometry && geometry.hasAttribute('position')) { | ||
| const position = geometry.getAttribute('position'); | ||
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| // Create a bounding box based on the specified draw range | ||
| const boundingBox = new THREE.Box3(); | ||
| const vertex = new THREE.Vector3(); | ||
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| for (let i = start; i < start + count; i++) { | ||
| // Extract the vertex position at the specified index | ||
| vertex.fromBufferAttribute(position, i); | ||
| boundingBox.expandByPoint(vertex); | ||
| } | ||
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| const scene = useModelStore.getState().scene; | ||
| if (scene) { | ||
| // delete the previous bounding box helper | ||
| scene.children.forEach((child) => { | ||
| if (child instanceof THREE.Box3Helper) { | ||
| scene.remove(child); | ||
| } | ||
| }); | ||
| // Add a Box3Helper to visualize the bounding box | ||
| const boundingBoxHelper = new THREE.Box3Helper(boundingBox, 0xff0000); // Red color for visibility | ||
| scene.add(boundingBoxHelper); | ||
| } | ||
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| // Center the camera on the bounding box | ||
| const center = boundingBox.getCenter(new THREE.Vector3()); | ||
| orbitControlsRef.current.target.copy(center); | ||
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| // Calculate direction vector from camera to center | ||
| const direction = new THREE.Vector3().subVectors(center, camera.position).normalize(); | ||
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| // Calculate the distance needed to fit the bounding box within the view | ||
| const size = boundingBox.getSize(new THREE.Vector3()); | ||
| const maxDimension = Math.max(size.x, size.y, size.z); | ||
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| // Adjust distance based on the camera type | ||
| let distance; | ||
| if (camera instanceof THREE.PerspectiveCamera) { | ||
| const fov = THREE.MathUtils.degToRad(camera.fov); // Convert fov to radians | ||
| distance = maxDimension / (2 * Math.tan(fov / 2)); | ||
| } else if (camera instanceof THREE.OrthographicCamera) { | ||
| // Adjust orthographic camera's zoom to fit the object | ||
| const aspectRatio = camera.right / camera.top; | ||
| camera.zoom = Math.min(camera.right / (maxDimension * aspectRatio), camera.top / maxDimension); | ||
| camera.updateProjectionMatrix(); | ||
| distance = maxDimension; // Set a default distance for positioning | ||
| } else { | ||
| console.warn('Unsupported camera type'); | ||
| return; | ||
| } | ||
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| // Position the camera based on calculated distance | ||
| camera.lookAt(center); | ||
| camera.position.copy(center).addScaledVector(direction.negate(), distance); | ||
| orbitControlsRef.current.update(); | ||
| } | ||
| } | ||
| // const controls = orbitControlsRef.current; | ||
| // const boundingBox = new THREE.Box3().setFromObject(object); | ||
| // const center = boundingBox.getCenter(new THREE.Vector3()); | ||
| // | ||
| // Update controls target | ||
| // controls.target.copy(center); | ||
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| // // Calculate appropriate camera position | ||
| // const size = boundingBox.getSize(new THREE.Vector3()); | ||
| // const maxDim = Math.max(size.x, size.y, size.z); | ||
| // | ||
| // if (camera instanceof THREE.PerspectiveCamera) { | ||
| // const fov = (camera.fov * Math.PI) / 180; | ||
| // const cameraDistance = maxDim / Math.tan(fov / 2); | ||
| // | ||
| // camera.position.copy( | ||
| // center.clone().add(new THREE.Vector3(cameraDistance, cameraDistance, cameraDistance)) | ||
| // ); | ||
| // | ||
| // camera.updateProjectionMatrix(); | ||
| // controls.update(); | ||
| // } else { | ||
| // console.warn('Camera is not a PerspectiveCamera'); | ||
| // } | ||
| } | ||
| }; |
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