Pan and Zoom View w/Thumbnail - Page 7

The Zoom Slider (Part 2)

Code for frame 1

// the x-coord is the starting point of the slider knob
x_coord = 650;
// 700 is as far as the
x_limit = 700;
if (mouse_down eq "true") {
	play ();
} else {
	stop ();
}

Code for frame 2

//get the current x of the knob and compare it to what it was previously to see if we need to update anything
var cur_x = _root.zoom_knob._x;
if (Number(cur_x)<>Number(prev_x)) {
	//the x has changed...use this *simple* equation below 
	// It's based on 50 px movement, 400% zoom & a base mag_factor of 5 (that's where the 6 comes from)
	var zoom_perc = 400 - (6*(x_limit - cur_x)); 
	// Figure out the inverse percentage for the magnifying glass
	// 20 is the maximum mag_factor (400% with a base mag_factor of 5 and defaulted at 100%)
	var mag_perc = (100/zoom_perc)*20;
	// Call the scaling function and moving function
	_root.scale_mag(zoom_perc,mag_perc);
	_root.move_panel();
}
// Set the current x as previous and do it again...as long as the knob is moving
prev_x = cur_x;
gotoAndPlay (1);