Question

我在改变THREEjs旋转方面遇到了困难。我基本上希望我的相机围绕我的物体旋转，而不是围绕标准点（0,0,0？）。原因是我的Vector3值相当大..（x，z，y）

4312872.381146194 66.59563132658498 -25727937.924670007
4312475.124507734 66.59563132658498 -25728638.83021001 
4312004.77886603 133.19126265316996 -25728715.10960813 
4311292.30267081 133.19126265316996 -25728348.26316222
4310580.495996718 199.78689397975492 -25727972.97279594 
4310080.51032912 199.78689397975492 -25727395.118092548 
4309842.889229621 266.3825253063399 -25726583.881802954 
4309162.375115815 266.3825253063399 -25726174.132726204

我用点线连接点，将相机位置设置到边界框并使用OrbitalControls移动。但移动相机并不专注于我的线几何。如何更改旋转行为？谁能让我走上正确的道路？

var renderer,
    scene,
    camera,
    controls

renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.setClearColorHex( 0xeeeeee, 1.0 );

scene = new THREE.Scene();

var material = new THREE.LineBasicMaterial({
    color: 0xff00cc,
    fog: true
});
var geometryL = new THREE.Geometry();

之后我将数据推送到Geometry ......

var line = new THREE.Line(geometryL, material);


geometryL.computeBoundingBox();
var bBox = geometryL.boundingBox;
console.log(bBox);
var x_max = bBox.max.x;
var y_max = bBox.max.y;
var z_max = bBox.max.z;

scene.add( line );

camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 5000000);
camera.position.set( x_max*1.01, y_max*1.01, z_max*1.01 );  

controls = new THREE.OrbitControls( camera );
controls.addEventListener( 'change', animate );

controls.rotateSpeed = 0.01;
controls.zoomSpeed = 0.01;
controls.panSpeed = 0.08;

controls.noZoom = false;
controls.noPan = false;

controls.staticMoving = true;
controls.dynamicDampingFactor = 2;

animate();

function animate() {
    renderer.render( scene, camera );
};

Answer 1

只需将相机应旋转的物体位置添加到相机的位置。

camera.position.set( x_max*1.01, y_max*1.01, z_max*1.01 ).add(YourObject.position.clone());

您也可以尝试更改控件的目标：

controls.target = YourObject.position.clone();

我希望我理解正确，因为我目前无法运行您的代码。

三个JS改变了Camera的旋转焦点

1 个答案: