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graphics arc how to update endAngle to make a ring timer


espace
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hi, if i use the arc and i would update the endAngle how do you do ?

i try with a loop but it lag a lot. it seems that it redraw a new arc each time..

thanks.

 


function create() {

    var graphics = game.add.graphics(game.world.centerX, game.world.centerY);

    graphics.lineStyle(0);

    graphics.beginFill(0xFF3300);

//posx,posy,radius,startAngle,endAngle,clockwise
    graphics.arc(-100, -100, 135, game.math.degToRad(0), game.math.degToRad(90), true);

    graphics.endFill();

}

 

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