first commit

2026-05-16 11:10:19 +02:00
commit 509c9b3737
172 changed files with 14496 additions and 0 deletions
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta http-equiv="X-UA-Compatible" content="IE=edge">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Fan controlled cursor</title>
+  <link rel="stylesheet" href="./style.css">
+  <script defer src="./main.js"></script>
+</head>
+<body>
+  <div class="keyboard-wrapper">
+    <div id="text"></div>
+    <div id="keyboard">
+      <div class="key" data-key="A">A</div>
+      <div class="key" data-key="B">B</div>
+      <div class="key" data-key="C">C</div>
+      <div class="key" data-key="D">D</div>
+      <div class="key" data-key="E">E</div>
+      <div class="key" data-key="F">F</div>
+      <div class="key" data-key="G">G</div>
+      <div class="key" data-key="H">H</div>
+      <div class="key" data-key="I">I</div>
+      <div class="key" data-key="J">J</div>
+      <div class="key" data-key="K">K</div>
+      <div class="key" data-key="L">L</div>
+      <div class="key" data-key="M">M</div>
+      <div class="key" data-key="N">N</div>
+      <div class="key" data-key="O">O</div>
+      <div class="key" data-key="P">P</div>
+      <div class="key" data-key="Q">Q</div>
+      <div class="key" data-key="R">R</div>
+      <div class="key" data-key="S">S</div>
+      <div class="key" data-key="T">T</div>
+      <div class="key" data-key="U">U</div>
+      <div class="key" data-key="V">V</div>
+      <div class="key" data-key="W">W</div>
+      <div class="key" data-key="X">X</div>
+      <div class="key" data-key="Y">Y</div>
+      <div class="key" data-key="Z">Z</div>
+      <div class="key" data-key="0">0</div>
+      <div class="key" data-key="1">1</div>
+      <div class="key" data-key="2">2</div>
+      <div class="key" data-key="3">3</div>
+      <div class="key" data-key="4">4</div>
+      <div class="key" data-key="5">5</div>
+      <div class="key" data-key="6">6</div>
+      <div class="key" data-key="7">7</div>
+      <div class="key" data-key="8">8</div>
+      <div class="key" data-key="9">9</div>
+      <div class="key wide" data-key="&nbsp">Space</div>
+      <div class="key wide" id="clear-btn">Clear</div>
+    </div>
+  </div>
+  <img id="cursor" src="./assets/cursor.png" draggable="false">
+  <img id="fan" src="./assets/fan.png" draggable="false">
+</body>
+</html>
@@ -0,0 +1,139 @@
+const FAN_SPEED = 2;
+
+const textElem = document.getElementById("text");
+const keyElems = document.getElementsByClassName("key");
+const fanElem = document.getElementById("fan");
+const cursorElem = document.getElementById("cursor");
+const fanPos = { x: 50, y: 50 };
+const cursorPos = { x: 200, y: 112 };
+const cursorVel = { x: 0, y: 0 };
+let isFanClicked = false;
+
+fanElem.addEventListener('dragstart', (e) => e.preventDefault());
+fanElem.addEventListener("mousedown", () => isFanClicked = true);
+fanElem.addEventListener("mouseup", () => isFanClicked = false);
+document.addEventListener("mouseleave", () => isFanClicked = false);
+
+document.addEventListener("mousemove", (e) => {
+  if (!isFanClicked) return;
+  fanPos.x = e.pageX - fanElem.clientWidth/2;
+  fanPos.y = e.pageY - fanElem.clientHeight/2;
+  if (fanPos.x < -fanElem.clientWidth/2) {
+    fanPos.x = -fanElem.clientWidth/2;
+  } else if (fanPos.x > document.body.clientWidth - fanElem.clientWidth/2) {
+    fanPos.x = document.body.clientWidth - fanElem.clientWidth/2;
+  }
+  if (fanPos.y < -fanElem.clientHeight/2) {
+    fanPos.y = -fanElem.clientHeight/2;
+  } else if (fanPos.y > document.body.clientHeight - fanElem.clientHeight/2) {
+    fanPos.y = document.body.clientHeight - fanElem.clientHeight/2;
+  }
+});
+
+function blowCursor(deltaTime) {
+  // direction from the fan to the fan cursor
+  const direction = {
+    x: (cursorPos.x + cursorElem.clientWidth/2) - (fanPos.x + fanElem.clientWidth/2),
+    y: (cursorPos.y + cursorElem.clientHeight/2) - (fanPos.y + fanElem.clientHeight/2)
+  };
+  // distance between the fan and the fan cursor
+  const distance = Math.sqrt(Math.pow(direction.x, 2) + Math.pow(direction.y, 2));
+  // make the direction a unit vector
+  direction.x /= distance;
+  direction.y /= distance;
+  // calculate the force and apply it
+  const force = Math.pow(FAN_SPEED / 10, 2) / distance;
+  cursorVel.x += force * direction.x * deltaTime;
+  cursorVel.y += force * direction.y * deltaTime;
+}
+
+function decelerateCursor(deltaTime) {
+  // apply the viscous friction formula
+  const accX = 0.1 * Math.pow(cursorVel.x, 2) / 2;
+  const accY = 0.1 * Math.pow(cursorVel.y, 2) / 2;
+  if (Math.round(cursorVel.x * 1000) == 0) {
+    cursorVel.x = 0;
+  } else {
+    cursorVel.x += accX * (cursorVel.x > 0 ? -1 : 1);
+  }
+  if (Math.round(cursorVel.y * 1000) == 0) {
+    cursorVel.y = 0;
+  } else {
+    cursorVel.y += accY * (cursorVel.y > 0 ? -1 : 1);
+  }
+}
+
+function updateFan() {
+  // update fan position
+  fanElem.style.left = `${fanPos.x}px`;
+  fanElem.style.top = `${fanPos.y}px`;
+  // update fan rotation
+  const diffX = (cursorPos.x + cursorElem.clientWidth/2) - (fanPos.x + fanElem.clientWidth/2);
+  const diffY = (cursorPos.y + cursorElem.clientHeight/2) - (fanPos.y + fanElem.clientHeight/2);
+  let rotation = Math.atan(diffY / diffX) * 180 / Math.PI;
+  if(diffX < 0) rotation += 180;
+  if(diffY < 0) rotation += 360;
+  fanElem.style.transform = `rotate(${rotation}deg)`;
+}
+
+function updateCursor(deltaTime) {
+  cursorPos.x += cursorVel.x * deltaTime;
+  cursorPos.y += cursorVel.y * deltaTime;
+  if (cursorPos.x < 0) {
+    cursorPos.x = 0;
+  } else if (cursorPos.x > document.body.clientWidth - cursorElem.clientWidth) {
+    cursorPos.x = document.body.clientWidth - cursorElem.clientWidth;
+  }
+  if (cursorPos.y < 0) {
+    cursorPos.y = 0;
+  } else if (cursorPos.y > document.body.clientHeight - cursorElem.clientHeight) {
+    cursorPos.y = document.body.clientHeight - cursorElem.clientHeight;
+  }
+  cursorElem.style.left = `${cursorPos.x}px`;
+  cursorElem.style.top = `${cursorPos.y}px`;
+}
+
+function isCollision(rect1, rect2) {
+  return (rect1.top < rect2.bottom && rect1.bottom > rect2.top &&
+    rect1.left < rect2.right && rect1.right > rect2.left);
+}
+
+let lastKey = null;
+function handleCursorHover() {
+  for (const key of keyElems) {
+    if (isCollision(cursorElem.getBoundingClientRect(), key.getBoundingClientRect())) {
+      if (key === lastKey) {
+        return;
+      }
+      lastKey = key;
+      if (key.id === "clear-btn") {
+        textElem.innerText = "";
+      } else {
+        textElem.innerText += key.dataset.key;
+      }
+      key.classList.add("hover");
+      return;
+    }
+  }
+  lastKey?.classList.remove("hover");
+  lastKey = null;
+}
+
+let lastTime = null;
+function update(time) {
+  requestAnimationFrame(update);
+  if (!lastTime) {
+    lastTime = time;
+    return;
+  }
+  const deltaTime = time - lastTime;
+  lastTime = time;
+
+  blowCursor(deltaTime);
+  decelerateCursor(deltaTime);
+  updateFan();
+  updateCursor(deltaTime);
+  handleCursorHover();
+}
+
+requestAnimationFrame(update);
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+*, *::before, *::after {
+  box-sizing: border-box;
+}
+
+body {
+  margin: 0;
+  overflow: hidden;
+  width: 100vw;
+  height: 100vh;
+  font-family: "Segoe UI", Arial, sans-serif;
+}
+
+#fan {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 6rem;
+  cursor: grab;
+}
+
+#fan:active {
+  cursor: grabbing;
+}
+
+#cursor {
+  position: absolute;
+  top: 0;
+  left: 0;
+  width: 1.5rem;
+}
+
+.keyboard-wrapper {
+  display: flex;
+  justify-content: center;
+  flex-wrap: wrap;
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  width: 71rem;
+}
+
+#text {
+  display: flex;
+  align-items: center;
+  width: 56rem;
+  height: 3rem;
+  font-size: 2rem;
+  background-color: gray;
+  color: white;
+  padding: 0 0.6rem;
+  margin: 2.2rem 0;
+  overflow: hidden;
+}
+
+#cursor, #fan, #keyboard {
+  user-select: none;
+}
+
+.key {
+  display: inline-flex;
+  justify-content: center;
+  align-items: center;
+  width: 2.4rem;
+  height: 2.4rem;
+  margin: 2.2rem;
+  background-color: lightgray;
+  font-size: 1.2rem;
+}
+
+.key.hover {
+  background-color: gray;
+}
+
+.key.wide {
+  width: 9.5rem;
+}