Questions tagged [raycasting]
A technique for using rays to determine points of intersection. Often used in lighting simulation.
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How to filter/ignore child objects from an ML Agents RayPerceptionSensor in 3D?
I am making a snake AI with Unity ML Agents. There will be lots of snakes who will eat and dodge each other.
A 3D RayPerceptionSensor detects everything, but there is a specific case where a problem ...
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BSP Tree Troubles and Unpredictable Results
I've been trying to fix this problem myself for ages, but I really do need help. I'm creating a BSP tree for my 3D game (baked in the map files, quake style) to replace my existing naïve collision &...
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Why doesn't my Raycast detect AABB collision?
I have the following struct that calculates Raycasting:
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Mouse Ray Picking: Z-Coordinate of Projected vector (glm::unproject)
I've run into a curious issue when implementing ray picking in my game engine.
It seems the Z coordinate of the Projected matrix has to be ever so slightly more than ...
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Finding the index in a material where a raycast hit
I have a gameobject with a mesh collider. The mesh is simply a flat plane.
I raycast to the mesh and I'd like to get the index on the material's basemap where I got a hit.
I assumed ...
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How to align to 2D ground surface directly underneath?
I'm out of ideas at this point.
I'm trying to set up a function inside my player controller that aligns the player with whatever is under it (usually the ground), ive tried using Raycasts, collisions ...
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Ray-Sphere Intersection Always States Ray Origin Is Point Nearest Sphere Center
I am writing a simple graphics engine using Rusts WGPU. I have a Sphere rendering at the origin of my scene like so:
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Red raycast despite valid target in Unity VR
I have a question regarding Unity VR and Interaction Toolkit.
When I point at a UI canvas element, the raycast turns from red to white (indicating that it is a valid target). However, when I create a ...
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Raycasting unable to detect water layer
I'm having issues detecting the ocean in my Unity scene (screenshot below) using Raycasting. In the image below, I've attached my script to a child object and set the layer for the Ocean object to ...
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How to detect colored pixel of Sprite3D texture with perspective camera ray?
I've tried to ray cast my mouse position to Sprite3D on screen but I have some problems with it.
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Detecting collisions with trajectories
What if an object were to have collision detection implemented as so: A ray in the direction the object is moving in, and a ray in the direction of gravity.
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Raycast suspension simulation rebounds car on landing
I'm expecting the car to land and engage the suspension to dampen the landing. The code I'm using currently has this effect:
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How to stretch a cylinder when dragging with a Ray Interactor?
I'm making a VR game in Unity.
I want to select a cylinder with ray interactor and drag it, and as I drag, it should stretch.
This is the code I have currently for 2D:
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Casting out vision rays for 2D car in pyglet to return distance from objects?
I am working on a machine learning project that involves training a 2D car to drive around a top-down racing track. I'll be training neural networks using different algorithms and one essential form ...
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Offset in a raycasting algorithm
I'm trying to implement a function that takes a ray as its start and end position and returns all intersections with the map grid.
I wrote following code and got a problem. Function returns correct ...
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