How can the zero point for coordinates be calculated and adjusted in PHP when working with images?

When working with images in PHP, the zero point for coordinates is typically at the top-left corner of the image. If you need to adjust this zero point, you can calculate the new coordinates by subtracting the desired offset from the original coordinates. This can be useful when you need to work with a different reference point on the image.

// Adjusting the zero point for coordinates in PHP when working with images
$offsetX = 100; // Desired X offset
$offsetY = 50; // Desired Y offset

// Original coordinates
$originalX = 200;
$originalY = 150;

// Calculate adjusted coordinates
$adjustedX = $originalX - $offsetX;
$adjustedY = $originalY - $offsetY;

// Output adjusted coordinates
echo "Adjusted X: $adjustedX, Adjusted Y: $adjustedY";