// Script.js
const calculateAspectRatio = () => {
const widthInput =
document.getElementById("width");
const heightInput =
document.getElementById("height");
const width = parseFloat(widthInput.value);
const height = parseFloat(heightInput.value);
if (!isNaN(width) &&
!isNaN(height)) {
const diagonal = Math.sqrt(
width ** 2 + height ** 2
).toFixed(2);
document.getElementById("result1")
.textContent = "Diagonal = " + diagonal;
const x = (
width / height
).toFixed(2);
document.getElementById(
"result2"
).textContent =
"Aspect Ratio (x:1 format) = " +
x +
" : 1";
const gcd = (a, b) => {
while (b) {
a %= b;
[a, b] = [b, a];
}
return a;
};
const gcdValue = gcd(
width,
height);
const w = width / gcdValue;
const h = height / gcdValue;
document.getElementById(
"result3"
).textContent =
"Aspect Ratio (w:h format) = " +
w +
" : " +
h;
// Apply aspect ratio to the preview image
const imageElement =
document.getElementById(
"previewImage"
);
imageElement.style.width = `${width}px`;
imageElement.style.height = `${height}px`;
}
else {
// Clear results and reset image on invalid input
document.getElementById(
"result1"
).textContent = "Diagonal: ";
document.getElementById(
"result2"
).textContent =
"Aspect Ratio (x:1 format): ";
document.getElementById(
"result3"
).textContent =
"Aspect Ratio (w:h format): ";
const imageElement =
document.getElementById(
"previewImage"
);
imageElement.style.width =
"auto";
imageElement.style.height =
"auto";
}
}
const setCommonRati = () => {
const commonRatios = {
"16:9": [1920, 1080],
"5:4": [1280, 1024],
"4:3": [1024, 768],
"3:2": [1440, 960],
"8K": [7680, 4320],
"5K": [5120, 2880],
"4K": [3840, 2160],
Retina: [2048, 1536],
iPhone6plus: [1920, 1080],
iPhone6: [1334, 750],
iPhone5: [1136, 640],
iPad: [1024, 768],
Twitter: [1024, 512],
WebBanner: [728, 90],
VGA: [640, 480],
HVGA: [320, 480],
};
const selectedRatio =
document.getElementById(
"commonRatios"
).value;
const [width, height] =
commonRatios[selectedRatio];
document.getElementById(
"width"
).value = width;
document.getElementById(
"height"
).value = height;
// Update the results and preview
// for the selected common ratio
calculateAspectRatio();
}
// Initialize the image aspect ratio
// based on the placeholder image
calculateAspectRatio();