Scene editor guide. Page 3


Modifying objects - Name, position, rotation and scaling

Click the View Details button of the Objects command window.

The Object Details window appears (see it on the right). This window contains many command pages, at least three of them are always present (the ones shown in the picture).
The page named General (currently selected here) lets you modify the spatial aspects of the object.
The Material page controls how the object reflects or emits light.
The Clip planes page lets you define and enable/disable up to six planes to cut away pieces of your object.

When a sphere, cylinder, disk or quad object is selected a special command page defining the parameters of these kinds of objects is also visible.

In the General page you can assign a name to your object. The name is displayed in the objects tree and can be used from a program using the TOpenGl component to retrieve the object and modify it runtime.

In this page you can also change the position of the object. Select the coordinate (X, Y, or Z) and move the scrool bar, you will see the object in the frame window move.

Use in the same way the scale control, this will make the object expand or shrink along the selected axis.

Rotation is a bit more complicated, please refer to a good OpenGl book if you want to understand what's really going on, but you can use it here with an intuitive approach: modify the coordinates of the rotation vector and then modify the rotation angle and see what you get, these four values let you turn the object any way you need but it may require some practice to get the desired effect.


Next page shows how to change the lights of the scene.

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