[javascript-dev] horizontal slider

On 16 sept. 07, at 20:52, Garrett Lynch wrote:

> hi
>
> Trying to modify the vertical jsui slider in max as a horizontal  
> slider.  I think i am nearly there but I can't figure out the final  
> math to get the mouse sensitivity to be correct. can anyone see  
> where I am going wrong?  Thanks in advance.

The x axis is between -aspect and +aspect which depends on the width/ 
height ratio. So you just have to calculate the aspect and scale your  
f value to be between 0 and 1:

function ondrag(x,y,but,cmd,shift,capslock,option,ctrl)
{
	var f,a, height, width, aspect;

	height = box.rect[3] - box.rect[1];
	width = box.rect[2] - box.rect[0];
	aspect = width/height;

	a = sketch.screentoworld(x,y);
	//detect horizontal movement
	f = (a[0] + aspect) / (2*aspect);

	msg_float(f); //set new value with clipping + refresh
}

HTH,
ej