Page 2 -Animating the Analog Clock
Lets get to the business immediately :).Open you model or download mine.
As we are now working on the clock hands so its better to freeze the unwanted objects.Select the cylinder (clock body) right click and
select "Freeze Selection"
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Freeze the numbers and dots using same mehtod.For newbies freezing simply freeze the object so we cant select or move these object.
^ Freezed ^
We animate the hand by linking them to the Slider manipulators.Create Panel > Helpers > Select Manipulators from drop-down list.
Click on the slider button and click three times on the stage to create three manipulators.Click on the "Select and Manipulate" button on main toolbar
(cannot move the slider without this enabled)When this button disabled the slider appear in yellow color(mean these are unmovable) and appear green
when enabled.Move the slider with the little square box on left of slider.
Name the sliders on the modify panel as slider_sec, slider_min , slider_hrs and also label them, label appears along with the slider.
Linking the sliders with clock hands.
We animate the clock hand by linking their rotation with the sliders.
Select the slider_hrs drag a box over it if trouble selecting(appear white when selected) right click the Hour Slider and select wire parameters.
Select Object(Slider)>Value.Rubber band appear select the little hour hand Transform > Rotation > Y Rotation
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On Parameter Wiring #1 dialog press the middle " <--> " button and click on connect.Drag the slider and you'll se hour hand rotating quite fast.Enter
value/15.9 in expression box for the hour's rotation.Drag the slider again and the hour_hand should be doing one complete rotations.
How? one rotation = 360*(degrees) and there are 60 seconds point on the clock so we want to hand to complete one complete rotation in small 6* steps.
360(Degree) / 60(Steps) = 6 hence 100 / 6 = 16.67 but this not work properly (don't know why?) so 100 / 15.9 is the expression that give the
almost complete rotation.
Hope you linked the hour hand with the its slider successfully , link the hour_hand with the min_hand.Select Y Rotation for both objects.As we want min_hand
to rotate 12 times as hour_hand complete on rotation, enter Y_Rotation*12 in Expression box for min_hand Y_Rotation.Check the connection by moving the hour_slider.
Tip : To move slider more smoothly,select the slider and open modify panel and click on the up or down arrow om the right of value text box.
Link min_hand with its slider enter value/15.9 in expression box of the min_hand.This enables us to move it smoothly,but slider wont move it to the full value while
dragging ,workaround :select it and use the arrows on the right of the value text box.
Link the min_hand to sec_hand just like we linked hr_hand and min_hand.:) but second hand rotate 60 times in an hour so Y_Rotation*60.
But the problem is that the second hand rotate too fast when using the hour or minutes slider.Link the sec_hand with the Slider_sec and enter value/79.5 to move
it smoothly with the slider small value wont work well here this because all hand are linked to each other.
Linking Summary.
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NO
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Type
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Link
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Details
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1
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<-->
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slider_hrs <--> hr_hand
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Enter value/15.9 in expression box for the hour's rotation.This give one complete rotation |
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2
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<-->
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hr_hand <--> min_hand
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Enter Rotation*12
in min_hand expression box to rotate it 12 times on one rotatio of hr_hand
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3
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<-->
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slider_min <--> min_hand
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Enter value/15.9 in expression box for the hour's
rotation.This give one complete rotation
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4
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<-->
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min_hand<-->sec_hand
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Enter Rotation*60 in
min_hand expression box to rotate it 60 times on one rotatio of hr_hand
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5
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<-->
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slder_sec<-->sec_hand
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Enter value/79.5 to rotate it smoothly.Or try other
values
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Download my completed clock model...
Your Feedback are weclome!
At the end of this tutorial , I like to say that you can improve this clock! Feel free to try different numbers and send your suggestion, tips , and point any error in this tutorial.
© Syed Saud
Karachi,Pakistan
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| ©Syed Saud |