26 lines
1012 B
JavaScript
26 lines
1012 B
JavaScript
//replaces all of a single color on the canvas with a different color
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//input two rgb color objects {r:0,g:0,b:0}
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function replaceAllOfColor (oldColor, newColor) {
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//convert strings to objects if nessesary
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if (typeof oldColor === 'string') oldColor = hexToRgb(oldColor);
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if (typeof newColor === 'string') newColor = hexToRgb(newColor);
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//create temporary image from canvas to search through
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var tempImage = currentLayer.context.getImageData(0, 0, canvasSize[0], canvasSize[1]);
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//loop through all pixels
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for (var i=0;i<tempImage.data.length;i+=4) {
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//check if pixel matches old color
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if(tempImage.data[i]==oldColor.r && tempImage.data[i+1]==oldColor.g && tempImage.data[i+2]==oldColor.b){
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//change to new color
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tempImage.data[i]=newColor.r;
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tempImage.data[i+1]=newColor.g;
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tempImage.data[i+2]=newColor.b;
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}
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}
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//put temp image back onto canvas
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currentLayer.context.putImageData(tempImage,0,0);
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}
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