Hi, this post is messy and unclear, please check this one instead: [image] Detect if target is behind the camera - bis Questions Hello, I made another post earlier, but I didn’t explain myself clearly and it got messy, so I’ll make another one. The goal is to have an ind…

Hello horsetopus, You could check the camera frustum intersection: var frustum = new THREE.Frustum(); var cameraViewProjectionMatrix = new THREE.Matrix4(); // every time the camera or objects change position (or every frame) camera.updateMatrixWorld(); // make sure the camera matrix is updated c…

Hi, INF1N1T. That’s nice, I didn’t knew of this method, so thank you, but it doesn’t fit my needs. I don’t know if you play FPS games, but you know how some arrow are used to show you objectives? If your objective is within the screen a symbol is displayed on top. If it is outside, an arrow on t…

[image] horsetopus: And my method works great for everything that is in front of the camera It works because the object is in the camera frustum, which can be represented by an invisible plane perpendicular to the camera. As soon as the object is outside the area made by this plane the math b…

Ok, so as I thought I really explain myself very badly. Although I thank you for the method ( better than what I was doing, witch was doing some intersections with the edges of the rectangle ), my issue is not with off-screen coordinates. It’s just about detecting when the object is behind the cam…

[image] horsetopus: I had to do a jsfiddle to get things clear: Edit fiddle - JSFiddle - Code Playground I can only see a yellow square that moves with mouse coordinates, where is the “getScreenPosition” function in question? Where are you checking the “behind the camera scenario” causing th…

Sorry, some unsaved drafts on the fiddle… I have updated, please check again. And I use composers to have two render passes: one for the perspective view, one for the orthogonal one (with the icons and the rest of the UI).

Re horsetopus, I am little confused at this point! I now see the 2 scenes, the cube rotating around the cam and the issue you are talking about in your previous post, but I don’t see your initial request with the “getScreenPosition” function. If you want someone to help you with the code in the JS…

My god have I been messy with this thread. I swear I am usually clearer, but I have work over my head. Sorry and thank you for your patience. So, first of all, about what you see. What maters is what is on the bottom, you see the perspective scene, and the overlaping ui. On top is the same scen…

Re horsetopus, What you are asking is really a hack and I would not recommend to do it this way for the purpose of “offscreen target pointers”, cause it is doing extra compute not necessary, specially for a game. For everyone sake, close this post and create a new one with your last question and I …

Done, You’ll find it here, and I hope I have been clear this time [image] Detect if target is behind the camera - bis Questions Hello, I made another post earlier, but I didn’t explain myself clearly and it got messy, so I’ll make another one. The goal is to have an ind…

Detect if target is behind the camera - outdated

Questions

horsetopus April 21, 2017, 10:02am 11

Done,
You’ll find it here, and I hope I have been clear this time

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Detect if target is behind the camera - outdated

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