Hey again?

, in this tutorial i’ll put together some quick code to make a movieclip “orbit” a position on the z axis. Basically – 2D. Here goes:

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onClipEvent(load){
	speed = 5
	radius = 100
	xcenter = 250
	ycenter = 150
	angle=0
}

So as you can see we have set 5 variables; the speed of orbit, the distance from point, the x point, the y point and the start angle.
Now we just need to use these.

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onClipEvent(enterFrame){
	_x = Math.cos(angle*Math.PI/180)*radius+xcenter
	_y=Math.sin(angle*Math.PI/180)*radius+ycenter
	angle+=speed
	if(angle>359){
		angle-=360
	}
}

So, from the above code we can see that the _x is equal to the cos of the current angle changed to radians for flash. Then we times it by the radius to get the distance and add the position to allow it orbit a separate position.

Simple when you know how, demo tomorrow

Hey again?

, in this tutorial i’ll put together some quick code to make a movieclip “orbit” a position on the x axis. Yeah, 3d

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onClipEvent(load){
	speed = 5
	radius = 100
	xcenter = 250
	ycenter = 150
	zcenter = 100
	angle = 0
	distance = 150
}

So as you can see we have set some variables; the speed of orbit, the distance from point, the x point, the y point the start angle and a scaling variable which is the distance back it should go. The smaller the variable the bigger the difference.
Now we just need to use these.

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onClipEvent(enterFrame){
	_x = Math.cos(angle*Math.PI/180)*radius+xcenter
	_y = ycenter
	z = Math.sin(angle*Math.PI/180)*radius+zcenter
	scale = distance/(distance+z)
	_xscale = _yscale = scale*100
	angle += speed
	if(angle>359){
		angle-=360
	}
}

So, fron the above code we can see that the _x is equal to the cos of the current angle changed to radians for flash. Then we times it by the radius to get the distance and add the position to allow it orbit a separate position. The _y stays the same and the z axis alters the scale.

So, a demo?

But if we change the distance variable to 10, then we get.

Y axis and depth?

First, create another movieclip at position (xcenter, ycenter). So make the x and y equal to that of the variables xcenter and ycenter. Almost as if we will be orbiting that movieclip…

Then add this to it:

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onClipEvent(load){
	this.swapDepths(_xscale)
}

Now we just need to edit a couple of lines on the orbiter.
First change

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distance = 150 to distance = (radius/zcenter)*100

So we are orbiting on a spherical scale now.
Then find

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_xscale= _yscale = scale*100

and add

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this.swapDepths(scale*150)

below it…

And…

HEHE , nice eh?