javascript - How to calculate to position x, y considering the scale -


for example need move point: [50, 50], , have stage scale of 10.4, how calculate position considering scale formula?

    $('#bphonesearch').click(function(e){          e.preventdefault();         node.nextxpoint = (stage.width() / 2 - pos.x);         node.nextypoint = (stage.height() / 2 - pos.y);         node.status = 'moving';     }); 

on click i'am getting end point need reach(it in center) , in frameanimation function:

                if(node.status == 'moving')                 {                      var dx = (stage.x() - node.nextxpoint);                     var dy = (stage.y() - node.nextypoint);                     var dist = math.sqrt(dx * dx + dy * dy);                     console.log(dist);                         if(dist < 5)                         {                              stage.x(node.nextxpoint);                             stage.y(node.nextypoint);                             node.status = '';                         }                         else                         {                         var angle = math.atan2(dy, dx);                         var speedx = -math.cos(angle) * 6;                         var speedy = -math.sin(angle) * 6;                          stage.x(stage.x() + speedx);                         stage.y(stage.y() + speedy);                         }                 } 

i'am doing moving animation, works ok, when scale stage, position getting wrong, question put scale calculation.

how stage scale: stage.getscalex(), stage.getscaley()

i'm not sure got question correctly seems bit simple. missing something?

scale = 10.4; // scale     posxscaled = posx * scale; //posx 50 in example positions[0] posyscaled = posy * scale; // positions[1] 

edit

i think need add scale calculation here:

var dx = (stage.x() - node.nextxpoint) * scale; var dy = (stage.y() - node.nextypoint) * scale; 

you might need update conditional:

if(dist < 5 * scale) 

Comments

Popular posts from this blog

get url and add instance to a model with prefilled foreign key :django admin -

android - Keyboard hides my half of edit-text and button below it even in scroll view -

css - Make div keyboard-scrollable in jQuery Mobile? -