4 replies to this topic

[darkson01]

anyone got any ideas how to re-create the scroll wheel on the ipod?

i've tried to search the web to see if anyone's done it yet, but i couldn't find one.

i think the user would have to press down on the scroll area to make it work, but i rather it would work with a rollover.

anyone got any suggestions?

[Pax]

get some fancy math

I'd have to take a bit of time to figure it out, but it has something to do with the degree at which the mouse cursor is at. So you can do it on rollover....

This code gives me the degrees (nDeg)...

circ.onRollOver = function(){
	var xpos:Number;
	var ypos:Number;
	var nCenterx:Number = (this._width/2) + this._x;
	var nCentery:Number = (this._height/2) + this._y;
	var nDeg:Number;
	this.onEnterFrame = function(){
		xpos = this._parent._xmouse - nCenterx;
		ypos = -1*(this._parent._ymouse - nCentery);
		
		nDeg = Math.atan2(ypos,xpos);
		nDeg = Math.round(nDeg/Math.PI*180);
		trace(nDeg);
	}
}

Use that as a starting point. Good luck.

Edit:

Forgot -- circ is a circle movieclip. You could replace the nCenterx and nCentery with static numbers too rather than needing a circle mc.

Edited by Pax, 07 March 2007 - 08:58 PM.

[darkson01]

im wanting it to not go from like 0 degrees to 360 degrees in the area of a semi circle. when it gets half way round the circle im wanting it to be at 180 degrees. this is what i've edited so far:

circ.onRollOver = function() {
	var xpos:Number;
	var ypos:Number;
	var nenterx:Number = this._x;
	var nentery:Number = this._y;
	var nDeg:Number;
	this.onEnterFrame = function() {
		xpos = this._parent._xmouse-nenterx;
		ypos = -1*(this._parent._ymouse-nentery);
		nDeg = Math.atan2(ypos, xpos);
		nDeg = Math.round(nDeg/Math.PI*360);
		trace(nDeg);
	};
};

what would i do stop making it 360 to only half the circle and make it 359 degrees be just before the point which is set as 0 degrees?

[bezz]

What a coincidence. I wrote one of these not too long ago.
http://www.bezzmedia.com/swfspot/samples/a...le_Wheel_Slider
This one works by incrementing/decrementing a number, but that number can be applied to a scroller.

[darkson01]

aww brillant!

thanks alot mate !