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Camera look at vector
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@KladimirVladne

Posts: 3

NGLNewbie

Sat, Apr 20 2013


Hello

Im rotating camera with

camera.rotateX = rX;
camera.rotateY = rY;
camera.rotateZ = rZ;


and i want to place objects directly in front of camera.

Is there a way to get lookAt vector from camera or other way to find out where the camera is looking?

Thanks
0% like this - 0/0

@KladimirVladne

Posts: 3

NGLNewbie

Mon, Apr 22 2013


In response to: @dineybomfim

All those methods are setting the look at vector, i need to get it after camera rotates
0% like this - 0/0

@dineybomfim

Posts: 571

NGLAdmin

Mon, Apr 22 2013


In response to: @KladimirVladne

Actually you don't need it. You don't need to know the vector of where the camera is looking at.
This is why you can set targets on any NGLObject3D, any objects can follow and be bound to any other object.

Besides, it will be just a vector, not a fixed point in the screen, and object over this vector doesn't mean it will be visible to the camera, there are many other factors in this final truth.

But if you think you need to know the vector to some sort of screen conversion, well, in this case you'll need to calculate the vector by your own using the camera matrix. NinevehGL gives you access to any matrix, Model, View, Projection, ModelView, ModelViewProjection, etc...
0% like this - 0/0

@KladimirVladne

Posts: 3

NGLNewbie

Mon, Apr 22 2013


In response to: @dineybomfim

thanks for help, i ended up calculating the vertor myself
100% like this - 1/1
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