The Filter Page

Developer
Lichi Chen
Size
3,026 Kb
Views
10,120
  1. The Filter Page Previews
  2. The Filter Page HTML Codes
  3. The Filter Page CSS Codes
  4. The Filter Page JS Codes

How do I make an the filter page?

What is a the filter page? How do you make a the filter page? This script and codes were developed by Lichi Chen on 18 October 2022, Tuesday.

The Filter Page Previews
IQ Test

The Filter Page - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>The Filter Page</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <script src="https://www.dukelearntoprogram.com/course1/common/js/image/SimpleImage.js"></script>
<h1>The Web Page</h1>
<h3>The Filter</h3>
<p> <canvas id = "one"></canvas>
<p> Upload Picture: <input type = "file" multiple = "false" accept = "image/*" id = "finput" onchange = "upload()">
</p>
<p>Image Size: <input type = "Button" id = "sizes" value = "Image Size" onclick = "dosize()">
</p>
<p> The size is <label id = "size"></label>
</p>
<p> <input type = "button" value = "Gray" id = "fgray" onclick = "dogray()"> <input type = "button" value = "blue" id = "fblue" onclick = "doblue()"> <input type = "button" value = "colorful" id = "fcolor" onclick = "docolor()"> <input type = "button" value = "red" id = "fred" onclick = "dored()"> <input type = "button" value = "xy" id = "fxy" onclick = "doxy()"> <input type = "button" value = "Rainbow" id = "frainbow" onclick = "dorainbow()"> <input type = "button" value = "Blur" id = "fblur" onclick = "doblur()">
</p>
<p> <input type = "button" value = "revert" id = "frevert" onclick = "dorevert()">
</p> <script src="js/index.js"></script>
</body>
</html>

The Filter Page - Script Codes CSS Codes

h1 { color: darkblue;
}
body { background-color: pink; font-size: 16px;
}
canvas { width: 500px; margin: 20px; border: 5px solid lightgray;
}

The Filter Page - Script Codes JS Codes

window.CP.PenTimer.MAX_TIME_IN_LOOP_WO_EXIT = 6000;
var c = document.getElementById("one");
var img = null;
var output;
function upload() { var fimg = document.getElementById("finput"); img = new SimpleImage(fimg); img.drawTo(c);
}
function dosize() { document.getElementById("size").innerHTML = img.getWidth() + " x " + img.getHeight();
}
function filtergray() { output = new SimpleImage(img.getWidth(),img.getHeight()); for (var pixel of img.values()) { var outpixel = output.getPixel(pixel.getX(), pixel.getY()); var avg = (pixel.getRed() + pixel.getGreen() + pixel.getBlue())/3; outpixel.setRed(avg); outpixel.setGreen(avg); outpixel.setBlue(avg); output.setPixel(pixel.getX(),pixel.getY(),outpixel); }
}
function filterblue() { output = new SimpleImage (img.getWidth(),img.getHeight()); for (var pixel of img.values()) { var outpixel = output.getPixel(pixel.getX(),pixel.getY()); var avg = (pixel.getRed() + pixel.getGreen() + pixel.getBlue())/3; if (avg <128) { outpixel.setRed(0); outpixel.setGreen(0); outpixel.setBlue(avg*2); } else { outpixel.setRed(avg*2-255); outpixel.setGreen(avg*2-255); outpixel.setBlue(255); } output.setPixel(pixel.getX(), pixel.getY(),outpixel); } }
function filtermix() { output = new SimpleImage(img.getWidth(),img.getHeight()); for (var pixel of img.values()) { var outpixel = output.getPixel(pixel.getX(),pixel.getY()); var avg = (pixel.getRed() + pixel.getGreen() + pixel.getBlue())/3; if (pixel.getX() < img.getWidth()/2) { if (avg <128) { outpixel.setRed(avg*2); outpixel.setGreen(0); outpixel.setBlue(0); } if (avg >128) { outpixel.setRed(255); outpixel.setGreen(avg*2-255); outpixel.setBlue(avg*2-255); } } if (pixel.getX() > img.getWidth()/2) { if (avg <128) { outpixel.setRed(0); outpixel.setGreen(0); outpixel.setBlue(avg*2); } if (avg >128) { outpixel.setRed(avg*2-255); outpixel.setGreen(avg*2-255); outpixel.setBlue(255); } } output.setPixel(pixel.getX(),pixel.getY(),outpixel); }
}
function filterred() { output = new SimpleImage (img.getWidth(),img.getHeight()); for (var pixel of img.values()) { var outpixel = output.getPixel(pixel.getX(), pixel.getY()); var avg = (pixel.getRed()+pixel.getGreen()+pixel.getBlue())/3; if (avg<128) { outpixel.setRed (avg*2); outpixel.setGreen(0); outpixel.setBlue(0); } else { outpixel.setRed(255); outpixel.setGreen(avg*2-255); outpixel.setBlue(avg*2-255); } output.setPixel(pixel.getX(),pixel.getY(),outpixel); }
}
function filterxy() { output = new SimpleImage (img.getWidth(),img.getHeight()); for (var pixel of img.values()) { var outpixel = output.getPixel(pixel.getX(), pixel.getY()); var avg = (pixel.getRed()+pixel.getGreen()+pixel.getBlue())/3; if (pixel.getX()/pixel.getY() > img.getWidth()/img.getHeight()) { if (avg < 128) { outpixel.setRed(0); outpixel.setGreen(avg*2); outpixel.setBlue(0); } if (avg >128) { outpixel.setRed(avg*2-255); outpixel.setGreen(255); outpixel.setBlue(avg*2-255); } } if (pixel.getX()/pixel.getY() < img.getWidth()/img.getHeight()) { if (avg < 128) { outpixel.setRed(avg*2); outpixel.setGreen(0); outpixel.setBlue(avg*2); } if (avg >128) { outpixel.setRed(avg*2-255); outpixel.setGreen(255); outpixel.setBlue(avg*2-255); } } output.setPixel(pixel.getX(),pixel.getY(),outpixel); }
}
function filterrainbow() { output = new SimpleImage(img.getWidth(),img.getHeight()); for (var pixel of img.values()) { var outpixel = output.getPixel(pixel.getX(),pixel.getY()); var avg = (pixel.getRed() + pixel.getGreen() + pixel.getBlue())/3; if (pixel.getX() < img.getWidth()/7) { if (avg < 128) { outpixel.setRed(avg*2); outpixel.setGreen(0); outpixel.setBlue(0); } if (avg > 128) { outpixel.setRed(255); outpixel.setGreen(avg*2-255); outpixel.setBlue(avg*2-255); } } if (pixel.getX() > img.getWidth()/7 && pixel.getX() < img.getWidth()/7*2) { if (avg < 128) { outpixel.setRed(avg*2); outpixel.setGreen(avg*0.8); outpixel.setBlue(0); } if (avg > 128) { outpixel.setRed(255); outpixel.setGreen(avg*1.2-51); outpixel.setBlue(avg*2-255); } } if (pixel.getX() > img.getWidth()/7*2 && pixel.getX() < img.getWidth()/7*3) { if (avg < 128) { outpixel.setRed(avg*2); outpixel.setGreen(avg*2); outpixel.setBlue(0); } if (avg > 128) { outpixel.setRed(255); outpixel.setGreen(255); outpixel.setBlue(avg*2-255); } } if (pixel.getX() > img.getWidth()/7*3 && pixel.getX() < img.getWidth()/7*4) { if (avg < 128) { outpixel.setRed(0); outpixel.setGreen(avg*2); outpixel.setBlue(0); } if (avg > 128) { outpixel.setRed(avg*2-255); outpixel.setGreen(255); outpixel.setBlue(avg*2-255); } } if (pixel.getX() > img.getWidth()/7*4 && pixel.getX() < img.getWidth()/7*5) { if (avg < 128) { outpixel.setRed(0); outpixel.setGreen(0); outpixel.setBlue(avg*2); } if (avg > 128) { outpixel.setRed(avg*2-255); outpixel.setGreen(avg*2-255); outpixel.setBlue(255); } } if (pixel.getX() > img.getWidth()/7*5 && pixel.getX() < img.getWidth()/7*6) { if (avg < 128) { outpixel.setRed(avg*0.8); outpixel.setGreen(0); outpixel.setBlue(avg*2); } if (avg > 128) { outpixel.setRed(avg*1.2-51); outpixel.setGreen(avg*2-255); outpixel.setBlue(255); } } if (pixel.getX() > img.getWidth()/7*6 && pixel.getX() < img.getWidth()) { if (avg < 128) { outpixel.setRed(avg*1.6); outpixel.setGreen(0); outpixel.setBlue(avg*1.6); } if (avg > 128) { outpixel.setRed(avg*0.4+153); outpixel.setGreen(avg*2-255); outpixel.setBlue(avg*0.4+153); } } output.setPixel(pixel.getX(), pixel.getY(), outpixel); } }
function filterblur() { output = new SimpleImage(img.getWidth(),img.getHeight()); for (var pixel of img.values()) { var x = pixel.getX(); var y = pixel.getY(); var r = Math.random(); var z = Math.floor(r * 11) if (x + z < img.getWidth() && y + z < img.getHeight()) { if (r <= 0.5) { var outpixel = img.getPixel(x, y); output.setPixel(x,y,outpixel); } else { var xx = x + z; var yy = y + z; var outpixel2 = img.getPixel(xx, yy); output.setPixel(x,y,outpixel2); } } }
}
function dogray() { if (imageIsLoaded(img)) { filtergray(); } output.drawTo(c);
}
function doblue() { if (imageIsLoaded(img)) { filterblue(); } output.drawTo(c);
}
function docolor() { if (imageIsLoaded(img)) { filtermix(); } output.drawTo(c);
}
function dored() { if (imageIsLoaded(img)) { filterred(); } output.drawTo(c);
}
function doxy() { if (imageIsLoaded(img)) { filterxy(); } output.drawTo(c);
}
function dorainbow() { if (imageIsLoaded(img)) { filterrainbow(); } output.drawTo(c);
}
function doblur() { if (imageIsLoaded(img)) { filterblur(); } output.drawTo(c);
}
function dorevert() { img.drawTo(c);
}
function imageIsLoaded() { if (img == null || !img.complete()) { alert("Image does not loaded"); return false; } else { return true; }
}
The Filter Page - Script Codes
The Filter Page - Script Codes
Home Page Home
Developer Lichi Chen
Username chenlichiclc
Uploaded October 18, 2022
Rating 3
Size 3,026 Kb
Views 10,120
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