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Increasing shape layer size in increments controlled by a Slider Control?
Hi there,
I’m trying to animate a rectangle shape layer to increase or decrease its size in increments of 135px horizontally and 120px vertically, but want to have a Null with 2 independent Slider Controls (to resize in X or Y).
If possible, in addition to the above I’d like to limit the Slider Control to -12 and 12 units only for vertical resize and -9 and 9 units for horizontal resize.
Going Negative would lower the value and Positive would increase the value. This might not be entirely possible in only 2 Sliders but I’m assuming it may be possible with 4 Slider Control instead, 2 being used as Vertical Positive (add) and Vertical Negative (subtract) and 2 as Horizontal Positive and Horizontal Negative?
Could someone help me with the expressions to make this real?
Many thanks in advance.
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4 Replies
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Hey Dave,
Thanks for your quick reply.
Having the slider will allow me to link a whole bunch of different layers and different properties to that one single controller without having to keyframe each one of them individually. It speeds up the entire process.
Also, I should rephrase my question as adding increments will just make the size jump every 135px or 120px by sliding the controller.
What I want instead would be for the Size to animate, for example, from 0px to 135px smoothly (will this be achievable by converting the slider units to % ?)Thanks.
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Use an expression on the size property.
Something along the line:
value + [135*effect("Slider Control X")("Slider"),120*effect("Slider Control Y")("Slider")]If you animate your slider from -12 to 12 it will go from -1620px to 1620px as smoothly as you set your keyframes influences.
Cassius Marques
http://www.zapfilmes.com -
Hey Cassius,
Thank you so much for your help, it works perfectly.
This is a minor thing but is there a way to constrain the slider min. and max. values?
As in the maximum value the slider goes is either -12 or 12?Thanks in advance.
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Oh ok, I think this might do it:
clamp(value, min=-12, max=12)
Thanks anyway!
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