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Mouse clicking on which object?

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I want to ask what methods can be used to determine the mouse''s positioned on which object on the screen? By transforming the mouse position and trace back to the objects like ray tracing? By OpenGL''s picking functions? Or by other methods?

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Guest Anonymous Poster
Anyone here could give me some advice? It sould be very great and thanks for the advices as I don''t have any idea on this.

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And I am using mouse as the navigation system, but it is use to point the direction on screen instead of click on the point on map to go. This, I don''t need to find the point of the map clicked.

But now, I need to click on "objects" like people for chatting and objects to take up or manipulate.

How can I know which object or person is clicked?

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