{"name":"Squares","title":"Squares","description":"Animated squares with scaling + direction customization.","type":"registry:component","add":"when-added","files":[{"type":"registry:component","role":"file","content":"<template>\n  <canvas ref=\"canvasRef\" class=\"w-full h-full border-none block\" />\n</template>\n\n<script setup lang=\"ts\">\nimport { ref, onMounted, onUnmounted, watch, useTemplateRef } from 'vue';\n\ntype CanvasStrokeStyle = string | CanvasGradient | CanvasPattern;\n\ninterface GridOffset {\n  x: number;\n  y: number;\n}\n\ninterface Props {\n  direction?: 'diagonal' | 'up' | 'right' | 'down' | 'left';\n  speed?: number;\n  borderColor?: CanvasStrokeStyle;\n  squareSize?: number;\n  hoverFillColor?: CanvasStrokeStyle;\n}\n\nconst props = withDefaults(defineProps<Props>(), {\n  direction: 'right',\n  speed: 1,\n  borderColor: '#999',\n  squareSize: 40,\n  hoverFillColor: '#222'\n});\n\nconst canvasRef = useTemplateRef<HTMLCanvasElement>('canvasRef');\nconst requestRef = ref<number | null>(null);\nconst numSquaresX = ref<number>(0);\nconst numSquaresY = ref<number>(0);\nconst gridOffset = ref<GridOffset>({ x: 0, y: 0 });\nconst hoveredSquareRef = ref<GridOffset | null>(null);\n\nlet ctx: CanvasRenderingContext2D | null = null;\n\nconst resizeCanvas = () => {\n  const canvas = canvasRef.value;\n  if (!canvas) return;\n\n  canvas.width = canvas.offsetWidth;\n  canvas.height = canvas.offsetHeight;\n  numSquaresX.value = Math.ceil(canvas.width / props.squareSize) + 1;\n  numSquaresY.value = Math.ceil(canvas.height / props.squareSize) + 1;\n};\n\nconst drawGrid = () => {\n  const canvas = canvasRef.value;\n  if (!ctx || !canvas) return;\n\n  ctx.clearRect(0, 0, canvas.width, canvas.height);\n\n  const startX = Math.floor(gridOffset.value.x / props.squareSize) * props.squareSize;\n  const startY = Math.floor(gridOffset.value.y / props.squareSize) * props.squareSize;\n\n  for (let x = startX; x < canvas.width + props.squareSize; x += props.squareSize) {\n    for (let y = startY; y < canvas.height + props.squareSize; y += props.squareSize) {\n      const squareX = x - (gridOffset.value.x % props.squareSize);\n      const squareY = y - (gridOffset.value.y % props.squareSize);\n\n      if (\n        hoveredSquareRef.value &&\n        Math.floor((x - startX) / props.squareSize) === hoveredSquareRef.value.x &&\n        Math.floor((y - startY) / props.squareSize) === hoveredSquareRef.value.y\n      ) {\n        ctx.fillStyle = props.hoverFillColor;\n        ctx.fillRect(squareX, squareY, props.squareSize, props.squareSize);\n      }\n\n      ctx.strokeStyle = props.borderColor;\n      ctx.strokeRect(squareX, squareY, props.squareSize, props.squareSize);\n    }\n  }\n\n  const gradient = ctx.createRadialGradient(\n    canvas.width / 2,\n    canvas.height / 2,\n    0,\n    canvas.width / 2,\n    canvas.height / 2,\n    Math.sqrt(canvas.width ** 2 + canvas.height ** 2) / 2\n  );\n  gradient.addColorStop(0, 'rgba(0, 0, 0, 0)');\n  gradient.addColorStop(1, '#0b0b0b');\n\n  ctx.fillStyle = gradient;\n  ctx.fillRect(0, 0, canvas.width, canvas.height);\n};\n\nconst updateAnimation = () => {\n  const effectiveSpeed = Math.max(props.speed, 0.1);\n\n  switch (props.direction) {\n    case 'right':\n      gridOffset.value.x = (gridOffset.value.x - effectiveSpeed + props.squareSize) % props.squareSize;\n      break;\n    case 'left':\n      gridOffset.value.x = (gridOffset.value.x + effectiveSpeed + props.squareSize) % props.squareSize;\n      break;\n    case 'up':\n      gridOffset.value.y = (gridOffset.value.y + effectiveSpeed + props.squareSize) % props.squareSize;\n      break;\n    case 'down':\n      gridOffset.value.y = (gridOffset.value.y - effectiveSpeed + props.squareSize) % props.squareSize;\n      break;\n    case 'diagonal':\n      gridOffset.value.x = (gridOffset.value.x - effectiveSpeed + props.squareSize) % props.squareSize;\n      gridOffset.value.y = (gridOffset.value.y - effectiveSpeed + props.squareSize) % props.squareSize;\n      break;\n    default:\n      break;\n  }\n\n  drawGrid();\n  requestRef.value = requestAnimationFrame(updateAnimation);\n};\n\nconst handleMouseMove = (event: MouseEvent) => {\n  const canvas = canvasRef.value;\n  if (!canvas) return;\n\n  const rect = canvas.getBoundingClientRect();\n  const mouseX = event.clientX - rect.left;\n  const mouseY = event.clientY - rect.top;\n\n  const startX = Math.floor(gridOffset.value.x / props.squareSize) * props.squareSize;\n  const startY = Math.floor(gridOffset.value.y / props.squareSize) * props.squareSize;\n\n  const hoveredSquareX = Math.floor((mouseX + gridOffset.value.x - startX) / props.squareSize);\n  const hoveredSquareY = Math.floor((mouseY + gridOffset.value.y - startY) / props.squareSize);\n\n  if (\n    !hoveredSquareRef.value ||\n    hoveredSquareRef.value.x !== hoveredSquareX ||\n    hoveredSquareRef.value.y !== hoveredSquareY\n  ) {\n    hoveredSquareRef.value = { x: hoveredSquareX, y: hoveredSquareY };\n  }\n};\n\nconst handleMouseLeave = () => {\n  hoveredSquareRef.value = null;\n};\n\nconst initializeCanvas = () => {\n  const canvas = canvasRef.value;\n  if (!canvas) return;\n\n  ctx = canvas.getContext('2d');\n  resizeCanvas();\n\n  canvas.addEventListener('mousemove', handleMouseMove);\n  canvas.addEventListener('mouseleave', handleMouseLeave);\n  window.addEventListener('resize', resizeCanvas);\n\n  requestRef.value = requestAnimationFrame(updateAnimation);\n};\n\nconst cleanup = () => {\n  const canvas = canvasRef.value;\n\n  if (requestRef.value) {\n    cancelAnimationFrame(requestRef.value);\n    requestRef.value = null;\n  }\n\n  if (canvas) {\n    canvas.removeEventListener('mousemove', handleMouseMove);\n    canvas.removeEventListener('mouseleave', handleMouseLeave);\n  }\n\n  window.removeEventListener('resize', resizeCanvas);\n};\n\nonMounted(() => {\n  initializeCanvas();\n});\n\nonUnmounted(() => {\n  cleanup();\n});\n\nwatch(\n  [\n    () => props.direction,\n    () => props.speed,\n    () => props.borderColor,\n    () => props.hoverFillColor,\n    () => props.squareSize\n  ],\n  () => {\n    cleanup();\n    initializeCanvas();\n  }\n);\n</script>\n","path":"Squares/Squares.vue","_imports_":[],"registryDependencies":[],"dependencies":[],"devDependencies":[]}],"registryDependencies":[],"dependencies":[],"devDependencies":[],"categories":["Backgrounds"]}