Click 3D objects (markers) in the distance, causing the camera to snap to that location

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I have seen a couple of similar questions asked, but none that quite get to what I'm trying to do. I am working on a project where I want the user to be able to click on various objects floating in the air in 3D space (in the distance). When the user clicks that object, I want the camera to snap to that position. I need to specify different locations for each 3D marker. Can anyone help me with this? I've added a link to a photo of my scene.

http://www.freeimagehosting.net/uploads/a4eca8ea6b.jpg

Thank you in advance for any help you can offer!

Answer 1

Answer by duck · Mar 26, 2010 at 06:06 PM

something like this (placed on each marker) ought to do the job, in a very basic way:

function OnMouseUp() {
    Camera.main.transform.LookAt(transform.position);
    Camera.main.transform.position = transform.position;
}

The above simply turns the camera to point at the clicked marker, then sets its position to the marker's position.

You may want to transition the camera to the marker somehow, in which case you'd probably want to use a coroutine and the "Lerp" function, something like this:

function OnMouseUp() {

 var startTime = Time.time;
 var startPos = Camera.main.transform.position;
 var startRot = Camera.main.transform.rotation;
 var targetPos = transform.position;
 var targetRot = transform.rotation;

 targetPos.y = Camera.main.transform.position.y;  // preserve cam's height

 while (Time.time &lt; startTime+1) {
     var i = (Time.time - startTime);
     Camera.main.transform.position = Vector3.Lerp(startPos, targetPos, i);
     Camera.main.transform.rotation= Quaternion.Slerp(startRot, targetRot, i);
     yield;
 }

(edited to preserve cam's height, as requested in the comments)

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Melissa · Mar 27, 2010 at 12:48 AM 0

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This is great! $$anonymous$$y only problem is that I have the camera slightly elevated above the buildings, and when it jumps to the marker's location, it doesn't keep the marker's y-value. Then I find myself inside the building and my colliders don't seem to work anymore. Any suggestions? Thanks again!

KvanteTore · Mar 27, 2010 at 08:32 AM 0

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When you move to the position of the marker, you move your center to the center of the marker. Could it be that the markers have a center below their apparent center of the mesh? You could either move the markers higher, change the mesh of the marker so that its center is higher up, or add a y-value to the destination position you are lerping to.

Melissa · Mar 27, 2010 at 04:30 PM 0

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Thanks. I will check that stuff out. How do I specify a particular y-value?

duck ♦♦ · Mar 27, 2010 at 08:45 PM 0

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I've just edited the example to show how to preserve the camera's height. You could modify this line to specify any height for targetPos.y

Melissa · Mar 28, 2010 at 03:05 AM 0

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Great! Thank you SO $$anonymous$$UCH!

Answer 2

Answer by Melissa · Mar 27, 2010 at 12:16 AM

I didn't mean to post in the answer section.

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Click 3D objects (markers) in the distance, causing the camera to snap to that location

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