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plurals

PO
primarykey
Id
13881776
data
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0
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0
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CreationDate
2012-12-14T15:39:54.847
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2012-12-14T15:39:54.847
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LastEditorUserId
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1774490
ParentId
13877188
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2
Score
2
ViewCount
0
LastEditorDisplayName
text
Body
I found the answer: <pre><code> for (var i = 0, n = data.length; i < n; i += 4) { data[i] = rgbColorKey.r; data[i + 1] = rgbColorKey.g; data[i + 2] = rgbColorKey.b; if (!ignoreAlpha && data[i + 3] > 0) { data[i + 3] = 255; } } </code></pre> This way, every pixel which has a bit of transparancy left, it will get a full color. So if you prototype this to kinetixJS it should work: <pre><code>Kinetic.Image.prototype.createImageHitRegion = function (callback, ignoreTransparantPixels) { var canvas = new Kinetic.Canvas(this.attrs.width, this.attrs.height); var context = canvas.getContext(); var _ignoreTransparantPixels; if(typeof ignoreTransparantPixels == 'undefined'){ _ignoreTransparantPixels = false; } context.drawImage(this.attrs.image, 0, 0); try { var imageData = context.getImageData(0, 0, canvas.getWidth(), canvas.getHeight()); var data = imageData.data; var rgbColorKey = Kinetic.Type._hexToRgb(this.colorKey); // replace non transparent pixels with color key for (var i = 0, n = data.length; i < n; i += 4) { data[i] = rgbColorKey.r; data[i + 1] = rgbColorKey.g; data[i + 2] = rgbColorKey.b; if (!_ignoreTransparantPixels && data[i + 3] > 0) { data[i + 3] = 255; } //trace(data[i + 3]); // i+3 is alpha (the fourth element) } var that = this; Kinetic.Type._getImage(imageData, function (imageObj) { that.imageHitRegion = imageObj; if (callback) { callback(); } }); } catch (e) { Kinetic.Global.warn('Unable to create image hit region. ' + e.message); } </code></pre> }
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singulars
PostAcceptedAnswerId
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PostParentId
1. POkineticjs - createImageRegion for pixels with opacity > 0 not only 1
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1. PTAnswer
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UserOwnerUserId
1. USFer van Rijswijk
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1. POkineticjs - createImageRegion for pixels with opacity > 0 not only 1
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3. VO
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