Questions tagged [three.js]
Three.js is a JavaScript 3D Library which makes use of WebGL
125 questions
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Best way to sync PhysicalObj to player headset position?
I’m in the process of designing a threejs-based webxr engine for simple VR games. Right now, I’m working on implementing physics with cannon-es, but I’m struggling to figure out how to sync the player’...
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How to play hundreds of explosion sounds
I am developing an RTS game with boats, the boats can shoot very frequently and I am having a hard time dealing with the explosion sounds. I am using three.js and the audio API it has that uses the ...
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My Collision isn't working the way I want it to
I am trying to make a game slimier to Minecraft, where there is a world of blocks, and a player that can walk, jump, and place blocks. Lately, I've been struggling to get collision detection between ...
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Steering around a track in R3F
I posted this on stackoverflow, then thought it might be better here where the gamedev experts are:
I am experimenting with threejs and react three fibre. I have a box which I am sending around a ...
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801
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How To Make Seamless Custom CubeMap?
I'm currently working on a Three.js project, and I'm aiming to create a seamless cube map. To achieve this, I created six planes and assembled them into a cube. Then, I utilized a shader to generate ...
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My GLTF models made in Blender are transparent from certain directions
When I rotate the camera some of my blender models become transparent from different angles. They are gltf models
Here is the Python to save the gltfs
...
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Shade a box different colors for two ends with one material in Three.js
First, I knew the following basic knowledges,
GLSL Language, Learn WebGL2 - GLSL
* GLSL Shaders
OpenGL - Coordinate Systems, [OpenGL - Advanced GLSL]
3D Game Shaders For Beginners - GLSL
...
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What is the best rate at which to send updates to clients for a first person shooter NodeJS WebSocket server?
I developed a multiplayer FPS using WebGL, Nodejs and WebSockets.
So far it is running great.
I am currently using setInterval(sendPlayerPositions, 16); to send updates to WebGL clients.
Ideally I ...
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2
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How to publish WebXR game on Quest or Steam stores?
I would like to develop a simple and small game for WebXR so that Quest, Index, etc. can play it. I would eventually like to be able to put it on the Quest store and Steam.
Is there a way to publish a ...
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Discontinuous Normals on a Normalized Cube Mesh with Displacement Texture
In my project, I have created a normalized cube using six plane meshes. To improve its visual quality, I added a displacement texture and calculated the normals for that texture to ensure proper ...
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How to compute tangent and bitangent vectors
I have a texture loaded in three.js, then passed to the shaders. In the vertex shader I compute the normal, and I save into a variable the uv vector.
...
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Assign biomes to areas with a Voronoi noise function
I've created this terrain based on a Voronoi noise function:
This is how it looks without the elevation:
I want to assign biomes to the polygons following certain rules and use the slope on the ...
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638
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Aircraft simulation
Trying to get a "semi" realistic aircraft simulator. I'm pulling my hair out because I just can't get the math right. I'm not looking for super realistic but want to at least get some ...
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Multiplayer game - Player position updates transmission pattern
I'm building a very basic 3D multiplayer game using Three.js and Socket.io where all the player does is move in an environment.
Considering there will be ~ 100 players in a single room and all data ...
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Creating a Game in Three.js do i share camera, scene objects?
Im creating a game with React and Three.js and vanilla Javascript, i have several clases, representing objects in the game, do i need to create a camera, scene, renderer for each class or i simply ...
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Octree build time crashes page for complex mesh
Using the standard three.js FPS example of octree implementation with a more advanced mesh, crashes the page on load.
My first idea is to write a few functions to save the octee data to a file, then ...
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655
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Center Perspective Camera on Coordinates
I've got a PerspectiveCamera and set of coordinates (x,y,z).
How could I pan the camera to make these coordinates at the center of the screen?
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How to import three.module.js
I'm looking at this three.js cubemap example, and it runs fine in my browser when loaded from that page.
After much strain to find and download the files - it does not run?
What am I doing wrong, with ...
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10k
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Adding multiple materials to a single mesh in three.js
I've been doing some reading and can't seem to figure out a good way to do this..
I have a simple globe with a material on it like so:
...
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How to move a player on a sphere surface using Ammo.js and Three,js
I am moving a rigidbody (the character) on the surface of a sphere, like what is described here.
I am facing the following issue that I am having hard time to solve:
After moving the character, it ...
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186
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Interpolate colors between vertex in a plane
So I have this plane generated with two different Perlin noises. It has mainly 3 regions, divided by color. I want to smooth out the lines, to create a "gradient" so there are no abrupt ...
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132
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Three.js Animate Text error geometry.faces
In this three.js Text example they animate text, i am trying to implement it on React/Three.js but i got the error TypeError: can't access property "length", geometry.faces is undefined
in ...
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THREE.JS - How to know the shortest rotation direction an object must do to look at other?
I am trying to understand a way in THREE.JS (and the mathematical foundation) to get the direction an object should rotate to lookAt other but without actually rotate it.
I've tried to use ...
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126
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Calculate 2d rotation to target (uniformly accelerated rotation, constant speed)
I'm trying to calculate an uniformly accelerated rotation for the autopilot module in my 3d space game shooter. The autopilot should fly the spaceship to any given point in the 3d space on the ...
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258
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Z-Fighting mitigation performance overhead
Which of following approaches will have less performance overhead(using threejs renderer)?
I am currently have an issue with z-fight for distant objects, while my near/far plane is already set to most ...
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234
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How to calculate local orientation of child relative to parent from only global positions?
I am trying visualize a human finger's pose with a 3D model in Three.js.
The 3D model is composed of 3 bones that represent the proximal, middle, and distal bones of the human finger, connected in ...
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Three.js— how to rotate sphere without moving light (using OrbitControls)?
Okay, I think the problem that I'm having is that when I create my DirectionalLight with three.js, when I then rotate my object with ...
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226
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Is there a way where we can verify if certain image is 3D or not [closed]
I wanted to understand - Is there a way where we can verify if certain image is 3D or not
So basically I want to automate the process where we can detect if certain given image is of 3D or not
Problem:...
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threejs lerp and camera the animation is not smooth
what is the problem with linear interpolation?
in update() in case this is animate()
and when I call zoomCamera() in update() there is lerp with smooth
but when I call here
...
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59
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How should I modify my terrain according to the biome? [duplicate]
I have this terrain I generated using Perlin Noise layers whose colors are applied based on the height of the vertex, just for reference before I am done being clear about how I will implement the ...
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613
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THREE.ShaderMaterial cannot perform antialiasing
I created a ShaderMaterial to draw a box in three.js using the following key code:
...
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9k
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How to move the camera to center an object in screen?
For example, an object is located at (x,y,z) in world space. Now how to calculate the offset translation, I mean no rotation, that will be applied to the camera so as to place the object at the center ...
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Drag 3D camera with mouse cursor
I have a camera that is moved by changing its X and Z coordinates. However, the camera is rotated, so when an object moves by 1 unit in the world, the number of pixels it moves by isn't trivial to ...
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What object3D properties are required to make rayCaster.intersectObjects() work?
FYI, I am trying to do something almost identical to the following:
Merging geometry/mesh without losing benefits
I essentially have a list of Three.object3D's. These objects are "merged" ...
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4
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Merging geometry/mesh without losing benefits
In three.js we can simply merge geometry to limit the amount of draw calls and thus increase performance. In a simple test with one material, I could draw 50.000 cubes + shadows @ 60fps on my GTX660 ...
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Camera Sensitivity in PointerLockControls to match actual games
I am creating a FPS game online. I want the user to be able to use a sensitivity they are familiar with from games they've played. In this case, I want them to use their Fortnite sensitivity.
I am ...
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How to make texture size correctly in THREE.js?
I'm new to THREE.js and I have a frustrating problem. I can't get my grass texture to size "normally" on the terrain.
I get it, the terrain is steep, but that doesn't mean the grass should be ...
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710
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Three js raycaster WITHOUT camera
I seem to find only examples to use the raycaster with the camera, but none that just have a raycaster from Point A to Point B.
I have a working raycaster, it retrieves my Helpers, Lines etc. but it ...
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3k
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3rd person camera rotate around player with mouse
I'm trying to make a 3rd person camera for a game with THREE.js and Physijs (if that's important), and so far I have set it up so that the camera follows behind the player using cos and sin etc. but I ...
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How to check if a line casted from one point to another point passes through a mesh?
Let's say we have two vectors A and B. Is there a way to use Three.js' Ray or Raycaster classes to cast a line between vector A and vector B and check is it passes through a mesh in the scene? I know ...
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8k
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Relative quaternion rotation (delta rotation) produces unstable results
Use case: I have a currentRotation quaternion and a targetRotation quaternion and need to calculate the relative rotation ...
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597
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How to avoid the cutoff of a Sprite when overlapping in a terrain?
I have a scene where I have a terrain as a PlaneGeometry. And I'm trying to locate a building on it as Sprite. But I'm not able to put that building/sprite centered on the terrain without getting a ...
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OpenGL seamless repeated texture has artifacts on edges
I'm currently trying to map a seamless texture onto a 3d wall object but when it comes to the edges of the texture there are visible artifacts.
closeup:
Here is the shader code i use for the texture ...
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How can I use canon.js in three.js editor?
I would like to add bullet physics to a scene crated by the three.js editor. Where do I need to put the canon.js file in order to be able to access it's functions from the editor scripts?
I ...
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1k
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Set custom Yaw Pitch and Roll in Three.js
So I have the following struct in C++, it gets updates with the values of an program that uses a camera in spectator mode:
...
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How to make an object which position is not on the world origin rotate around the world orgin in threejs?
I've loaded an object and set its position on vector(5,2,-5) by threejs. And I wanted it to rotate around the origin point in the world coodinate system. I found a method in class Object3D called '...
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Three.js camera rotation and behavior
I'm just getting into Three.js and the camera is causing some problems. Basically, I want to implement spectator-like movement controls, so that I can move around freely in the scene. The problem is ...
user30340
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830
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PhysiJS and objects on top of moving objects
Using Physijs which uses ammo.js.
I am attempting to simply place a sphere on top of a box, the box is moving back and forth and I want the sphere to move with it while also being able to move on top ...
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2k
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Position object in FOV in threejs
I'm just starting with threejs, and I'm building a basic first person shooter. I use pointer lock controls.
When the user clicks ("shoots") an object, I remove it and place it at another random ...
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Change shadervalues for different Meshes in Three.js
Hey I am writing a Shader for Three.js.
My goal is to have multiple objects with the same shader and each object should have a color set on the object that is then given to the shader. The goal is to ...
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