koobas.hobune.stream
How to detect if a gameobject collides with a image on a worldspace canvas
If I have a quad in 3d, with a canvas on it, with a image, how can I detect if a object, say a missile collides with the image on the worldspace canvas? Note the mouse and screen are not involved in this, there is no 'clicking' only a missile heading to a quad with a canvas image on it in worldspace. Thanks!
You should still be able to add a regular box collider to the canvas, or at least to a transparent image that's taking up the full area of the canvas.
There are possibly dozens of images on the canvas, moving about, which I need to detect which the missile hits. I've considered adding a mesh collider to the object, then getting the UV coordinate of the hit, and then Lerping 0-1 to the x,y positions of the images to try to find the hit...
It just seems Unity must have some way to detect UI collisions with gameobjects
As long as the image attached to it is marked as raycast target, you can detect it with raycasting.
The images are set as raycast target, however Physics.Raycast does not return a hit against it, is there another type of raycast which needs to be done?
Physics will work only if you put a collider on it. To detect UI elements you have to use GraphicRaycaster.
