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Next: Using the Modify Component Up: Using the Model Editing Previous: Creating New Components

Changing Component Parameters with the Mouse

Move the cursor to a point near the centre of the Gaussian component (within the blue disc) and press and hold down BSelect. The component will change colour to indicate that it has been selected for editing. Move the cursor while keeping the button pressed. The component will move with the cursor. When you have moved the component to a place where it does not overlap the spherical component. Do the same with the sphere. You should now be able to see all three components. Dragging the components with the mouse is the easiest way to move them around within the model.

You can also use the mouse to change the sizes and shapes of components. Press BSelect while pointing at the edge of the spherical component and move the mouse. You should see the sphere change size so that its edge always lies under the cursor. Release the button to finish modifying the component. If you have trouble hitting the edge of the component, try changing the model editor's scale to make the component larger.

Now move the pointer to one end of one of the lines marking the axes of the elliptical, Gaussian component. Press BSelect again and move the mouse. This time you change the size and orientation of the axis you have chosen. The other axis will, of course, remain perpendicular to it. As before, if you have trouble hitting the end of the axis, try changing the model editor's scale.

These methods for changing component parameters are convenient but are not particularly precise. Nor do they allow you to change the flux density of a component (which would require a three-dimensional representation of the model). The next section will show you how to get around these limitations.



Chris Flatters
Thu Mar 14 16:02:50 MST 1996