The main components of 3D-model

The main components of 3D-model are shown in figure:

1 - position of the observer,

2 - the image of a surface,

3 - observed object (landmark),

4 - a projection of position of observed object on a plane of a surface,

5 - source of lighting.

At moving the object along model in the Bottom panel the coordinates of landmark are shown.

The observer can be placed in two positions relative to the model:

Observer outside - the observer is on the fixed distance from the landmark. For change of distance from the observer to the landmark the buttons «<» (to distance the model from the observer) and «>» (to approach model to the observer) are used. Turn of model is made concerning the landmark's position.

Observer in center - the observer himself moves along model. Turn of model is carried out concerning the observer.