Aspect of the applet
Remark: In the figures marked as , if you pass the mouse over the figure you will see an animated gif.
Handling the figures
- To insert a figure, you should use the lateral menu which contains the forms of the available figures.
- You can insert an unlimited number of figures with the same form.
- After inserting a figure, an example of the chosen figure will be shown, together with a second figure. This second figure is the inversion of the first figure with respect to the inversion circle.
- A figure is selected when it is surrounded by a violet rectangle.
- When a figure is inserted, it becomes automatically selected.
- To select a figure, you should click on it and, in the case of superposition of figures, you should click successively over them until you select the figure you want. It is not possible to select more than one figure simultaneously.
- First you should select the figure you would like to transform.
- You can apply over each figure one of the three isometric transformations: translations, rotations and reflections. (isometric="preserves distances").
Move the mouse maintaining the left button pressed.
Keep pressing the key Ctrl and move the mouse around the figure keeping the left button pressed.
click the right mouse button.
- You can increase or decrease the size of the selected figure, by clicking, respectively, the buttons and that appear in the top menu.
- For some figures, there is the possibility of changing its form. For those figures there are marked points, signed by yellow circles, that can be moved by you. For that, you just need to click over those points and, keeping the left mouse button pressed, move the point to the place you want. Some of those points may not be able to be fully manipulated; for example, in the case of the ellipse, there is only one point of that type, that can only be moved by you along a straight line. The position of this point varies the eccentricity (flattening) of the ellipse.
- Select the figure you want to change.
- In the top menu there is a button whose function is to show/hide inside the figures and which also indicates whether or not the selected figure is or not with a visible interior.
- Select the figure you want to wipe out.
- In the top menu click the button with the symbol .
Modify circle inversion
- In the top menu click the button with the symbol . It will appear, immediately, a sub-menu. You can change the centre of the circle of inversion in 3 different ways:
- In the top menu click the button with the symbol . A sub-menu appears and then use the buttons with the symbols and to increase and decrease the radius of the inversion circle, respectively.