I am currently facing a scenario where I need to determine the direction of an object in relation to the camera. While I have methods for detecting if an object is within the camera's view, I am now tasked with determining the directions of objects that are not directly in sight. Specifically, I need to know if they are located towards the right or left side of the camera. To provide better clarity, I have included a picture illustrating the situation.
Transform the coordinates of the object into local camera space, then analyze the x value.
// consider obj2...
let position = obj2.position.clone();
camera.worldToLocal(position);
if (position.x > 0) {
console.log('The object is on the right side of the screen!');
} else if (position.x < 0) {
console.log('The object is on the left side of the screen!');
} else {
console.log('The object is in the center of the screen!');
}
In some cases, the object's shape may cause it to appear on one side while being rendered on a different side or at the center. Detecting this scenario is more intricate, but the fundamental concept remains the same, and bounding boxes/spheres can simplify the process.
To determine the orientation of objects in relation to a camera, calculate the angle between the camera view vector and the vector formed by subtracting the object's position from the camera's position. This will help identify if the objects are located to the right or left of the camera's viewing angle.
Retrieve the camera angle using PerspectiveCamera.getWorldDirection(new THREE.Vector3())
For more information, refer to the documentation:
Pseudo code example:
let outOfViewObjects = getOutofViewObjects()
let left = []
let right = []
outOfViewObjects.forEach(obj => {
let vector1 = camera.position.clone().sub(obj.position)
let vector2 = camera.getWorldDirection(new THREE.Vector3())
let angle = Math.atan2(vector2.y, vector2.x) - Math.atan2(vector1.y, vector1.x)
if(angle < 0) left.push
else right.push
})
let leftCount = left.length
let rightCount = right.length
In my current scenario, I am facing a challenging situation: export function* getPosts() { try { const response = yield call(apiCall); yield put({ type: "API_CALL_SUCCESS", response }); } catch(e) { // ... } Furthermore, there is a spec ...
Whenever I run the command npx create-next-app, a prompt appears asking me to specify an import alias. This question includes options such as ( * / ** ) that I find confusing. My preference is to use standard ES6 import statements, like this: import Nav f ...
My goal is to create dynamic forms with validations using veeValidate in Vue.js. I am attempting to achieve this by storing an array of objects within the component's data. For instance: data(){ return{ inputs: [ { id: 1, lab ...
As someone new to web development, I'm struggling with a specific task. Here is the issue at hand: I have three checkboxes. If box1 and then box2 are selected, they should be marked. However, if box3 is then selected, box1 should automatically unchec ...
Encountered an issue with editing a form using modal ajax, where the edit form pops up but the data remains empty. The code snippet for my controller: public function edit() { $id=$this->uri->segment(3); $data=array( 'project' => $th ...
I'm interested in creating a horizontal animation controlled by skrollr. As I scroll down, I want the elements on my page to move from left to right within my container. When all elements have the same width, setting the scrolling data from 100% to 0 ...
I have been developing a ReactJS application that is now live. Take a look at the deployed version to understand the issue I am facing. In Firefox, the Login button in the Inventory Login section doesn't seem to be working as expected. Despite having ...
What is the best solution for handling element manipulation, such as on Chrome? I have a button that can be hidden or disabled. By using Chrome's elements, it is possible to change it from hidden/disabled to visible/enabled, triggering my click functi ...
Upon selecting the "Keyboard layout" option, JavaScript generates buttons dynamically. However, the click event does not work with these dynamically generated buttons. This issue is likely due to the fact that the element ".prices-tier" does not exist when ...
For instance: Whenever I enter gmail.com, it automatically takes me to this link: https://accounts.google.com/signin/v2/identifier?service=mail&passive=true&rm=false&continue=https%3A%2F%2Fmail.google.com%2Fmail%2F&ss=1&scc=1<mp ...
I'm currently working on creating image slider component using Nextjs/React and Emotion. I thought I had everything set up correctly but unfortunately, I keep encountering this common error... Error: ImageSliderContainer(...): Nothing was returned f ...
In my controller, I am trying to extract the second value in an array list that a user selects from a dropdown so that I can perform mathematical operations on it. $scope.dropdown = [ {name:'Name', value:'123'}] When a user chooses "N ...
If I have the following code: function testA { setTimeout('testB()', 1000); doLong(); } function testB { doSomething(); } function doLong() { //takes a few seconds to do something } When I run testA(), what happens after 1000 mill ...
Attempting to implement a similar concept in Vue: props(){ debouncing: {type: Number, default: 0} }, methods: { clicked: _.debounce(function() { this.$emit('click'); }, this.debouncing), } Unfortunately, the code breaks when ...
I am facing an issue with one of my dependencies that is in the form of "protobufjs": "git+https://github.com/danieldanielecki/protobufjs-angularfire.git#master". I installed it using npm install --save https://github.com/danieldanielecki/protobufjs-angula ...
I am facing an issue with my function that connects to a SOAP web service. The problem arises from the fact that the web service has limited connections available. When I use a for or foreach loop to search through an array of items in the web service, aro ...
My store setup is as follows: export const store = new Vuex.Store({ state: { someProp: someAsyncFn().then(res => res), ... }, ... }) I'm concerned that someProp might not be waiting for the values to be resolved. Is th ...
Currently, my setup includes: node.js: 9.8.0 Jest: 23.4.2 ts-jest: 23.1.3 typescript: 2.9.2 While attempting the following in my *.test.ts files: const foo = () => 'bar'; console.log(foo.name); // '' foo contains the name pro ...
The way Angular-Fullstack scaffolds the project is really impressive. However, I already have data being served through a restful API, so server components are unnecessary for me. Is there a way I can utilize only the client part and eliminate the server c ...
Today is my first day using cypress and I encountered a scenario where I need to test the display of a simple element on mobile, tablet, or desktop. I tried changing the viewport with a method that seems to work, but unfortunately, the config doesn't ...