Question by AntoineProvost · Dec 20, 2022 at 01:51 PM · ui raycast button canvas worldspace

How to use world space buttons with raycast starting from a custom Gameobject ?

Hi all,

for an scientific experiment I need to be able to click on UI buttons with a custom ray emitting from a gun but I'm stuck because I cannot use the mouse ScreenToWorldPoint since the controls are only with keyboard arrows to move the gun orientation.

My first guess was to use WorldToScreenPoint instead but for that I need to find the intersection between the ray and the Canvas but I have no idea how to do this because the ray always pass trought the canvas (even with a graphic raycaster on it)

alt text

If anyone have a solution ?

Best,

Antoine

raycast.jpg (148.1 kB)

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sacredgeometry · Dec 20, 2022 at 02:20 PM 0

What are you using for the buttons? If they are worldspace could they not just be given colliders?

AntoineProvost sacredgeometry · Dec 20, 2022 at 02:23 PM 0

Indeed that can be a solution ! It's just that I wanted to keep the imbedded Button properties like the OnClick call or the color tint change functionnality

sacredgeometry AntoineProvost · Dec 20, 2022 at 04:26 PM 0

Are you sure you are casting the ray in the right direction?

sacredgeometry · Dec 20, 2022 at 02:21 PM 0

Oh you added a GraphicRaycaster

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