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document.addEventListener('DOMContentLoaded', function () { |
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var _typoKeys = { |
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family:'font-family', weight:'font-weight', style:'font-style', |
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transform:'text-transform', decoration:'text-decoration', |
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sizeDesktop:'font-size-d', sizeTablet:'font-size-t', sizeMobile:'font-size-m', |
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lineHeightDesktop:'line-height-d', lineHeightTablet:'line-height-t', lineHeightMobile:'line-height-m', |
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letterSpacingDesktop:'letter-spacing-d', letterSpacingTablet:'letter-spacing-t', letterSpacingMobile:'letter-spacing-m', |
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wordSpacingDesktop:'word-spacing-d', wordSpacingTablet:'word-spacing-t', wordSpacingMobile:'word-spacing-m' |
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}; |
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var _typoUnits = { size:'sizeUnit', lineHeight:'lineHeightUnit', letterSpacing:'letterSpacingUnit', wordSpacing:'wordSpacingUnit' }; |
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var _typoUnitDefaults = { size:'px', lineHeight:'', letterSpacing:'px', wordSpacing:'px' }; |
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function typoCssVarsForEl(el, obj, prefix) { |
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if (!obj || typeof obj !== 'object') return; |
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Object.keys(_typoKeys).forEach(function (k) { |
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var v = obj[k]; if (v === undefined || v === '') return; |
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var prop = _typoKeys[k]; |
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var base = k.replace(/Desktop|Tablet|Mobile/, ''); |
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var uKey = _typoUnits[base]; |
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if (uKey && typeof v === 'number') v = v + (obj[uKey] || _typoUnitDefaults[base] || ''); |
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el.style.setProperty('--' + prefix + prop, v); |
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}); |
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} |
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|
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document.querySelectorAll('.bkbg-3dt-app').forEach(function (root) { |
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var opts = JSON.parse(root.dataset.opts || '{}'); |
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init3DText(root, opts); |
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}); |
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}); |
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|
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function make3dShadow(a, depthOverride) { |
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var depth = depthOverride !== undefined ? depthOverride : (a.depth || 8); |
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var angle = (a.angle || 45) * Math.PI / 180; |
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var dx = Math.cos(angle); |
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var dy = Math.sin(angle); |
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var shads = []; |
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var style3d = a.style3d || 'extrude'; |
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|
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if (style3d === 'extrude') { |
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for (var i = 1; i <= depth; i++) { |
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shads.push((dx * i).toFixed(1) + 'px ' + (dy * i).toFixed(1) + 'px 0 ' + (a.depthColor || '#312e81')); |
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} |
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shads.push((dx * depth + 4).toFixed(1) + 'px ' + (dy * depth + 6).toFixed(1) + 'px 8px ' + (a.shadowColor || 'rgba(0,0,0,0.25)')); |
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} else if (style3d === 'longshadow') { |
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var steps = depth * 4; |
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for (var i = 1; i <= steps; i++) { |
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shads.push(i + 'px ' + i + 'px 0 ' + (a.depthColor || '#312e81')); |
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} |
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} else if (style3d === 'retro') { |
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for (var i = 1; i <= depth; i++) { |
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shads.push(i + 'px ' + i + 'px 0 ' + (a.depthColor || '#312e81')); |
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} |
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shads.push('0 0 0 3px ' + (a.depthColor || '#312e81')); |
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shads.push((depth + 4) + 'px ' + (depth + 6) + 'px 10px ' + (a.shadowColor || 'rgba(0,0,0,0.25)')); |
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} else if (style3d === 'isometric') { |
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for (var i = 1; i <= depth; i++) { |
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shads.push(i + 'px ' + Math.round(i * 0.5) + 'px 0 ' + (a.depthColor || '#312e81')); |
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} |
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shads.push((depth + 3) + 'px ' + Math.round(depth * 0.5 + 4) + 'px 8px ' + (a.shadowColor || 'rgba(0,0,0,0.25)')); |
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} else if (style3d === 'emboss') { |
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shads.push('-1px -1px 2px rgba(255,255,255,0.3)'); |
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shads.push('1px 1px 2px rgba(0,0,0,0.5)'); |
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for (var i = 1; i <= depth; i++) { |
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shads.push(i + 'px ' + i + 'px 0 ' + (a.depthColor || '#312e81')); |
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} |
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} |
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return shads.join(', '); |
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} |
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|
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function init3DText(root, a) { |
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var Tag = a.tag || 'h2'; |
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var text = a.text || '3D TEXT'; |
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var depth = a.depth || 8; |
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|
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/* wrap */ |
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var wrap = document.createElement('div'); |
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wrap.className = 'bkbg-3dt-wrap bkbg-3dt-hover-' + (a.hoverEffect || 'tilt'); |
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wrap.style.cssText = [ |
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'background:' + (a.showBg ? (a.backgroundColor || '#0f172a') : 'transparent'), |
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'padding:' + (a.paddingV || 48) + 'px ' + (a.paddingH || 32) + 'px', |
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'border-radius:' + (a.borderRadius || 0) + 'px', |
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'text-align:' + (a.textAlign || 'center'), |
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'overflow:hidden', |
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'position:relative', |
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].join(';'); |
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|
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/* text element */ |
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var textEl = document.createElement(Tag); |
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textEl.className = 'bkbg-3dt-text bkbg-3dt-anim-' + (a.animation || 'none'); |
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textEl.textContent = text; |
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|
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var baseTextShadow = make3dShadow(a); |
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|
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var ts = [ |
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'margin:0', |
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'display:block', |
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'cursor:default', |
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'text-shadow:' + baseTextShadow, |
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]; |
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|
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if (a.gradientText) { |
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ts.push('background:linear-gradient(135deg,' + (a.gradientFrom || '#a78bfa') + ' 0%,' + (a.gradientTo || '#60a5fa') + ' 100%)'); |
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ts.push('-webkit-background-clip:text'); |
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ts.push('-webkit-text-fill-color:transparent'); |
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ts.push('background-clip:text'); |
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ts.push('color:transparent'); |
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} else { |
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ts.push('color:' + (a.textColor || '#6366f1')); |
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} |
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textEl.style.cssText = ts.join(';'); |
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|
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wrap.appendChild(textEl); |
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|
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/* reflection */ |
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if (a.showReflection) { |
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var reflEl = document.createElement(Tag); |
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reflEl.className = 'bkbg-3dt-text bkbg-3dt-reflection'; |
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reflEl.textContent = text; |
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reflEl.style.cssText = textEl.style.cssText; |
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wrap.appendChild(reflEl); |
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} |
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|
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/* Apply typo CSS vars on root (cascades to .bkbg-3dt-text) */ |
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typoCssVarsForEl(root, a.textTypo, 'bk3dt-tx-'); |
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|
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root.appendChild(wrap); |
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|
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/* hover: tilt */ |
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if (a.hoverEffect === 'tilt') { |
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wrap.style.perspective = '600px'; |
| 130 |
wrap.addEventListener('mousemove', function (e) { |
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var rect = wrap.getBoundingClientRect(); |
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var cx = rect.left + rect.width / 2; |
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var cy = rect.top + rect.height / 2; |
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var rx = ((e.clientY - cy) / (rect.height / 2)) * -12; |
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var ry = ((e.clientX - cx) / (rect.width / 2)) * 12; |
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textEl.style.transform = 'rotateX(' + rx + 'deg) rotateY(' + ry + 'deg)'; |
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}); |
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wrap.addEventListener('mouseleave', function () { |
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textEl.style.transform = 'rotateX(0) rotateY(0)'; |
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}); |
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} |
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|
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/* hover: press — animate depth collapse */ |
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if (a.hoverEffect === 'press') { |
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var pressing = false; |
| 146 |
wrap.addEventListener('mouseenter', function () { |
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if (pressing) return; |
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pressing = true; |
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var cur = depth; |
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var iv = setInterval(function () { |
| 151 |
cur = Math.max(0, cur - 1); |
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textEl.style.textShadow = make3dShadow(a, cur); |
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if (cur <= 0) clearInterval(iv); |
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}, 20); |
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}); |
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wrap.addEventListener('mouseleave', function () { |
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pressing = false; |
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var cur = 0; |
| 159 |
var iv = setInterval(function () { |
| 160 |
cur = Math.min(depth, cur + 1); |
| 161 |
textEl.style.textShadow = make3dShadow(a, cur); |
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if (cur >= depth) clearInterval(iv); |
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}, 20); |
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}); |
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} |
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} |
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|
