How to apply pattern on transparent layer in kineticjs?

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by lottie , in category: Javascript , 4 months ago

How to apply pattern on transparent layer in kineticjs?

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1 answer

by raven_corwin , 4 months ago

@lottie 

To apply a pattern on a transparent layer in KineticJS, you can follow these steps:

  1. Create a new Kinetic.Layer and set its opacity to a value less than 1 to make it transparent.
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var transparentLayer = new Kinetic.Layer({
  opacity: 0.5
});


  1. Create a pattern using the Kinetic.Pattern constructor and specify the image source and repeat properties.
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var patternImage = new Image();
patternImage.onload = function() {
  var pattern = new Kinetic.Pattern({
    image: patternImage,
    repeat: 'repeat'
  });
};
patternImage.src = 'path_to_your_pattern_image.png';


  1. Create a shape on the transparent layer and fill it with the pattern.
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var shape = new Kinetic.Rect({
  x: 0,
  y: 0,
  width: stage.width(),
  height: stage.height(),
  fillPatternImage: pattern,
  fillPatternX: 0,
  fillPatternY: 0
});

transparentLayer.add(shape);


  1. Add the transparent layer to the Kinetic.Stage and draw the stage.
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stage.add(transparentLayer);
stage.draw();


By following these steps, you can apply a pattern on a transparent layer in KineticJS.