Difference between revisions of "Animation"
(added v.4 - added possibility to animate constrained points) |
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− | <noinclude>{{Manual Page}}[[Category:Manual (official)|{{PAGENAME}}]]</noinclude> | + | <noinclude>{{Manual Page|version=4.0}}[[Category:Manual (official)|{{PAGENAME}}]]</noinclude> |
{{objects|property}} | {{objects|property}} | ||
==Automatic Animation== | ==Automatic Animation== | ||
− | GeoGebra allows you to animate | + | GeoGebra allows you to animate not only free numbers and/or angles at the same time, but also dependent points that are constrained on an object (segment, line, function, curve, etc.). |
+ | In order to be automatically animated, free numbers/angles need to be shown as sliders in the [[Graphics View]]. | ||
− | If you want to animate a free number or angle in GeoGebra, you need to right click (Mac OS: Ctrl-click) on the number or | + | If you want to animate a free number or angle in GeoGebra, as well as a dependent point, you need to right click (Mac OS: Ctrl-click) on the number, angle or point and select Animation On from the appearing [[Context Menu]]. In order to stop the animation, you need to un-check Animation On in the same Context Menu. |
− | {{note|After animating a free number | + | {{note|After animating a free number, a free angle or a dependent point, an animation button appears in the lower left corner of the Graphics View. It allows you to either [[Image:Animate Pause.png]] pause or [[Image:Animate Play.png]] continue an animation.}} |
In the [[Properties Dialog]] on tab Slider you can change the behavior of the animation: | In the [[Properties Dialog]] on tab Slider you can change the behavior of the animation: | ||
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{{note|A speed of 1 means that the animation takes about 10 seconds to run once through the interval of the slider.}} | {{note|A speed of 1 means that the animation takes about 10 seconds to run once through the interval of the slider.}} | ||
− | On the other hand, you | + | On the other hand, you can decide how the animation cycle is repeated: |
; ⇔ Oscillating: | ; ⇔ Oscillating: | ||
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==Manual Animation== | ==Manual Animation== | ||
− | To manually change a number or | + | To manually change a number, angle or point position continuously, select the [[Image:Tool Move.gif]] [[Move Tool]]. Then, click on a free number, angle or a dependent point and press either the + or – key or the arrow keys on you keyboard. Keeping one of these keys pressed allows you to produce manual animations. |
− | {{example|If | + | {{example|If the point coordinates depend on a number ''t'' like in <nowiki>P = (2 t, t)</nowiki>, the point will move along a straight line when ''t'' is changed continuously. }} |
{{note|You can adjust the increment of the slider on tab Slider of the [[Properties Dialog]] of this object.}} | {{note|You can adjust the increment of the slider on tab Slider of the [[Properties Dialog]] of this object.}} | ||
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*Alt + arrow key gives you a step width of 100 units | *Alt + arrow key gives you a step width of 100 units | ||
− | {{note|A point on a line can also be moved along | + | {{note|A point on a line can also be moved along that line using the + or – key.}} |
Revision as of 12:40, 17 February 2011
Automatic Animation
GeoGebra allows you to animate not only free numbers and/or angles at the same time, but also dependent points that are constrained on an object (segment, line, function, curve, etc.). In order to be automatically animated, free numbers/angles need to be shown as sliders in the Graphics View.
If you want to animate a free number or angle in GeoGebra, as well as a dependent point, you need to right click (Mac OS: Ctrl-click) on the number, angle or point and select Animation On from the appearing Context Menu. In order to stop the animation, you need to un-check Animation On in the same Context Menu.
In the Properties Dialog on tab Slider you can change the behavior of the animation:
On the one hand, you may control the Speed of the animation.
On the other hand, you can decide how the animation cycle is repeated:
- ⇔ Oscillating
- The animation cycle alternates between Decreasing and Increasing.
- ⇒ Increasing
- The slider value is always increasing. After reaching the maximum value of the slider, it jumps back to the minimum value and continues the animation.
- ⇐ Decreasing
- The slider value is always decreasing. After reaching the minimum value of the slider, it jumps back to the maximum value and continues the animation.
Manual Animation
To manually change a number, angle or point position continuously, select the Move Tool. Then, click on a free number, angle or a dependent point and press either the + or – key or the arrow keys on you keyboard. Keeping one of these keys pressed allows you to produce manual animations.
Keyboard Shortcuts
- Shift + arrow key gives you a step width of 0.1 units
- Ctrl + arrow key gives you a step width of 10 units
- Alt + arrow key gives you a step width of 100 units