Αυτός ο κώδικας δεν πρέπει να εγκατασταθεί άμεσα. Είναι μια βιβλιοθήκη για άλλους κώδικες που περιλαμβάνεται μέσω της οδηγίας meta // @require https://update.greasyfork.org/scripts/412024/851816/ZText%20by%20Bennett%20Feely.js
/*!
* ztext.js v0.0.1
* https://bennettfeely.com/ztext
* Licensed MIT | (c) 2020 Bennett Feely
*/
if (
CSS.supports("-moz-transform-style", "preserve-3d") ||
CSS.supports("-ms-transform-style", "preserve-3d") ||
CSS.supports("-webkit-transform-style", "preserve-3d") ||
CSS.supports("transform-style", "preserve-3d")
) {
// Default values
z_default = {
depth: "1rem",
direction: "both",
event: "none",
eventRotation: "30deg",
eventDirection: "default",
fade: false,
layers: 10,
perspective: "500px",
z: true,
};
// Get all elements with the [data-z] attribute
var zs = document.querySelectorAll("[data-z]");
zs.forEach((z) => {
// Make uniform option keys
options = {
depth: z.dataset.zDepth || z_default.depth,
direction: z.dataset.zDirection || z_default.direction,
event: z.dataset.zEvent || z_default.event,
eventRotation: z.dataset.zEventrotation || z_default.eventRotation,
eventDirection: z.dataset.zEventdirection || z_default.eventDirection,
fade: z.dataset.zFade || z_default.fade,
layers: parseFloat(z.dataset.zLayers) || z_default.layers,
perspective: z.dataset.zPerspective || z_default.perspective,
zEngaged: z.dataset.z || z_default.z,
};
zDraw(z, options);
});
// JS constructor
function Ztextify(selector, options) {
var zs = document.querySelectorAll(selector);
zs.forEach((z) => {
zDraw(z, options);
});
}
function zDraw(z, options) {
var z_engaged = options.zEngaged || z_default.zEngaged;
if (z_engaged !== "false") {
var depth = options.depth || z_default.depth;
var depth_unit = depth.match(/[a-z]+/)[0];
var depth_numeral = parseFloat(depth.replace(depth_unit, ""));
var direction = options.direction || z_default.direction;
var event = options.event || z_default.event;
var event_rotation = options.eventRotation || z_default.eventRotation;
var event_rotation_unit = event_rotation.match(/[a-z]+/)[0];
var event_rotation_numeral = parseFloat(
event_rotation.replace(event_rotation_unit, "")
);
var event_direction = options.eventDirection || z_default.eventDirection;
var fade = options.fade || z_default.fade;
var layers = options.layers || z_default.layers;
var perspective = options.perspective || z_default.perspective;
var transform = options.transform || z_default.transform;
// Grab the text and replace it with a new structure
var text = z.innerHTML;
z.innerHTML = "";
z.style.display = "inline-block";
z.style.position = "relative";
z.style.webkitPerspective = perspective;
z.style.perspective = perspective;
// Create a wrapper span that will hold all the layers
var zText = document.createElement("span");
zText.setAttribute("class", "z-text");
zText.style.display = "inline-block";
zText.style.webkitTransformStyle = "preserve-3d";
zText.style.transformStyle = "preserve-3d";
// Create a layer for transforms from JS to be applied
// CSS is stupid that transforms cannot be applied individually
var zLayers = document.createElement("span");
zLayers.setAttribute("class", "z-layers");
zLayers.style.display = "inline-block";
zLayers.style.webkitTransformStyle = "preserve-3d";
zLayers.style.transformStyle = "preserve-3d";
zText.append(zLayers);
for (i = 0; i < layers; i++) {
let pct = i / layers;
// Create a layer
var zLayer = document.createElement("span");
zLayer.setAttribute("class", "z-layer");
zLayer.innerHTML = text;
zLayer.style.display = "inline-block";
// Shift the layer on the z axis
if (direction === "backwards") {
var zTranslation = -pct * depth_numeral;
}
if (direction === "both") {
var zTranslation = -(pct * depth_numeral) + depth_numeral / 2;
}
if (direction === "forwards") {
var zTranslation = -(pct * depth_numeral) + depth_numeral;
}
var transform = "translateZ(" + zTranslation + depth_unit + ")";
zLayer.style.webkitTransform = transform;
zLayer.style.transform = transform;
// Manipulate duplicate layers
if (i >= 1) {
// Overlay duplicate layers on top of each other
zLayer.style.position = "absolute";
zLayer.style.top = 0;
zLayer.style.left = 0;
// Hide duplicate layres from screen readers and user interation
zLayer.setAttribute("aria-hidden", "true");
zLayer.style.pointerEvents = "none";
zLayer.style.mozUserSelect = "none";
zLayer.style.msUserSelect = "none";
zLayer.style.webkitUserSelect = "none";
zLayer.style.userSelect = "none";
// Incrementally fade layers if option is enabled
if (fade === true || fade === "true") {
zLayer.style.opacity = (1 - pct) / 2;
}
}
// Add layer to wrapper span
zLayers.append(zLayer);
}
// Finish adding everything to the original element
z.append(zText);
function tilt(x_pct, y_pct) {
// Switch neg/pos values if eventDirection is reversed
if (event_direction == "reverse") {
var event_direction_adj = -1;
} else {
var event_direction_adj = 1;
}
// Multiply pct rotation by eventRotation and eventDirection
var x_tilt = x_pct * event_rotation_numeral * event_direction_adj;
var y_tilt = -y_pct * event_rotation_numeral * event_direction_adj;
// Keep values in bounds [-1, 1]
var x_clamped = Math.min(Math.max(x_tilt, -1), 1);
var y_clamped = Math.min(Math.max(y_tilt, -1), 1);
// Add unit to transform value
var unit = event_rotation_unit;
// Rotate .z-layers as a function of x and y coordinates
var transform =
"rotateX(" + y_tilt + unit + ") rotateY(" + x_tilt + unit + ")";
zLayers.style.webkitTransform = transform;
zLayers.style.transform = transform;
}
// Capture mousemove and touchmove events and rotate .z-layers
if (event === "pointer") {
window.addEventListener(
"mousemove",
(e) => {
var x_pct = (e.clientX / window.innerWidth - 0.5) * 2;
var y_pct = (e.clientY / window.innerHeight - 0.5) * 2;
tilt(x_pct, y_pct);
},
false
);
window.addEventListener(
"touchmove",
(e) => {
var x_pct = (e.touches[0].clientX / window.innerWidth - 0.5) * 2;
var y_pct = (e.touches[0].clientY / window.innerHeight - 0.5) * 2;
tilt(x_pct, y_pct);
},
false
);
}
// Capture scroll event and rotate .z-layers
if (event == "scroll") {
function zScroll() {
var bounds = z.getBoundingClientRect();
var center_x = bounds.left + bounds.width / 2 - window.innerWidth / 2;
var center_y =
bounds.top + bounds.height / 2 - window.innerHeight / 2;
var x_pct = (center_x / window.innerWidth) * -2;
var y_pct = (center_y / window.innerHeight) * -2;
tilt(x_pct, y_pct);
}
scroll();
window.addEventListener("scroll", zScroll, false);
}
if (event == "scrollY") {
function zScrollY() {
var bounds = z.getBoundingClientRect();
var center_y =
bounds.top + bounds.height / 2 - window.innerHeight / 2;
var y_pct = (center_y / window.innerHeight) * -2;
tilt(0, y_pct);
}
scrollY();
window.addEventListener("scroll", zScrollY, false);
}
if (event == "scrollX") {
function zScrollX() {
var bounds = z.getBoundingClientRect();
var center_x = bounds.left + bounds.width / 2 - window.innerWidth / 2;
var x_pct = (center_x / window.innerWidth) * -2;
tilt(x_pct, 0);
}
scrollX();
window.addEventListener("scroll", zScrollX, false);
}
}
}
} else {
console.error(
"ztext is disabled because CSS transform-style: preserve3d; is unsupported."
);
}
