Example Blur

class Blur extends SampleApp {

  var bmp : h2d.Bitmap;
  var blur : h2d.filter.Blur;
  var gfx : h2d.Graphics;
  var text : h2d.Text;

  override function init() {
    super.init();

    bmp = new h2d.Bitmap(hxd.Res.hxlogo.toTile(), s2d);
    bmp.x = bmp.y = 100;

    blur = new h2d.filter.Blur();
    bmp.filter = blur;

    gfx = new h2d.Graphics(s2d);
    gfx.x = 500;
    gfx.y = 500;
    gfx.scale(16);

    text = new h2d.Text(hxd.res.DefaultFont.get(), s2d);
    text.y = 720;
    text.x = 5;

    addSlider("Radius", function() return blur.radius, function(v) { blur.radius = v; sync(); }, 0, 40).width = 200;
    addSlider("Linear", function() return blur.linear, function(b) { blur.linear = b; sync(); });
    addSlider("Gain", function() return blur.gain, function(b) { blur.gain = b; sync(); }, 0, 2);
    addSlider("Quality", function() return blur.quality, function(v) { blur.quality = v; sync(); }, 0, 1);

    sync();
  }

  function sync() @:privateAccess {

    gfx.clear();
    blur.pass.calcValues();

    gfx.beginFill(0xFF0000,0.2);
    gfx.drawRect(-blur.radius,0,blur.radius*2,10);
    gfx.endFill();

    gfx.lineStyle(0.1,0xFF0000, 0.5);
    for( i in 0...Math.ceil(blur.radius) ) {
      gfx.moveTo(i, 0);
      gfx.lineTo(i, 10);
      gfx.moveTo(-i, 0);
      gfx.lineTo(-i, 10);
    }

    gfx.lineStyle(0.1,0xFFFFFF);
    var q = blur.pass.values.length - 1;
    for( i in -q...q+1 ) {
      var x = blur.pass.offsets[i < 0 ? -i : i] * i;
      var y = (1 - blur.pass.values[i < 0 ? -i : i]) * 10;
      if( i == -q )
        gfx.moveTo(x,y);
      else
        gfx.lineTo(x,y);
    }
    gfx.lineStyle();

    gfx.beginFill(0x00FF00);
    for( i in -q...q+1 ) {
      var x = blur.pass.offsets[i < 0 ? -i : i] * i;
      var y = (1 - blur.pass.values[i < 0 ? -i : i]) * 10;
      gfx.drawCircle(x,y,0.3,8);
    }

    var k = blur.pass.values.length * 2 - 1;
    text.text = k+"x"+k+"\n"+[for( v in blur.pass.values ) hxd.Math.fmt(v)].toString()+"\n"+[for( i in 0...q+1 ) hxd.Math.fmt(blur.pass.offsets[i]*i)].toString();
  }

  static function main() {
    hxd.Res.initEmbed();
    new Blur();
  }

}

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