I have scene with elements size over 500 units and i want to create mirror effect for them. to Reach descripted effect i used Reflector library from three.js webgl_mirror example.
I placed mirror on ground and most of meshes disappears or showing only small parts of surface when i set background hdri without its displayes normally. I builded other scene for tests and it looks like this unexpected effect begins when distance between mirror and obiect is over around 75 units (sometimes its less i dont know what its depends).
Image to preview on that effect
Is there any possibility that i could increase range of this clipping box size for that mirror? (i really want to avoid of scaling my actual created scene)
What i already tryed:
-changing my perspective camera far and near distances. - no effect
-manipulate paramets for clipBias and recursion or even increasing texture size. -no effect
-adding multiple lights around elements. -no effect
code that i used for experiment:
sceneSetup = () => {
//initialize
const width = this.mount.clientWidth;
const height = this.mount.clientHeight;
this.scene = new THREE.Scene();
let helperScene = this.scene;
this.camera = new THREE.PerspectiveCamera(60, width / height, 1, 500);
this.camera.position.z = 200;
this.controls = new OrbitControls(this.camera, document.body);
this.renderer = new THREE.WebGLRenderer();
this.renderer.setSize(width, height);
this.mount.appendChild(this.renderer.domElement); //render to container (React staff)
///Load HDR map
new RGBELoader()
.setDataType(THREE.UnsignedByteType)
.load(HdrFile, function(texture) {
var envMap = pmremGenerator.fromEquirectangular(texture).texture;
helperScene.background = envMap; // comment to see issue
helperScene.environment = envMap;
texture.dispose();
pmremGenerator.dispose();
});
var pmremGenerator = new THREE.PMREMGenerator(this.renderer);
pmremGenerator.compileEquirectangularShader();
//create ground mirror
let geometry = new THREE.PlaneBufferGeometry(200, 200);
let groundMirror = new Reflector(geometry, {
clipBias: 0,
textureWidth: 1024,
textureHeight: 1024,
color: 0x889999,
recursion: 1
});
groundMirror .position.z = -20;
groundMirror .rotation.x = Math.PI * -0.5;
//change groundMirror .position.y to -104 and evrything looks fine;
groundMirror .position.y = -105;
this.scene.add(groundMirror );
};
addCustomSceneObjects = () => {
//create cube for reflect
const geometry = new THREE.BoxGeometry(50, 50, 50);
const material = new THREE.MeshPhongMaterial({
color: 0x156289,
emissive: 0x072534,
side: THREE.DoubleSide,
depthTest: true,
depthWrite: true
});
this.cube = new THREE.Mesh(geometry, material);
this.cube.position.y = 0;
this.scene.add(this.cube);
//radding lights
const lights = [];
lights[0] = new THREE.PointLight(0xffffff, 1, 0);
lights[1] = new THREE.PointLight(0xffffff, 1, 0);
lights[2] = new THREE.PointLight(0xffffff, 1, 0);
lights[0].position.set(0, 200, 0);
lights[1].position.set(100, 200, 100);
lights[2].position.set(-100, -200, -100);
this.scene.add(lights[0]);
this.scene.add(lights[1]);
this.scene.add(lights[2]);
};
startAnimationLoop = () => {
//rotate cube
this.cube.rotation.x += 0.01;
this.cube.rotation.y += 0.01;
this.requestID = window.requestAnimationFrame(this.startAnimationLoop);
this.renderer.render(this.scene, this.camera);
};
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