a.download = 'creator-model.obj';
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
URL.revokeObjectURL(url);
codeStatus('exported OBJ โ share it');
}catch(e){ codeStatus('export failed'); }
}
/* ORGANIC SCULPT MODE โ Playa 2.0 spec, blessed */
/* Smooth / Sharpen / Bend brushes, vertex displacement along normals */
var _sculptOpen = false;
var _sculptBrush = 'smooth';
var _sculptIntensity = 0.3;
function toggleSculptMode(){
_sculptOpen = !_sculptOpen;
var sm = document.getElementById('sculptPanel');
if(_sculptOpen){
var target = window._highlighted || window._selectedBlock;
if(!target){ codeStatus('tap a block first, then sculpt'); _sculptOpen = false; return; }
if(!sm){
sm = document.createElement('div');
sm.id = 'sculptPanel';
sm.style.cssText = 'position:fixed;bottom:80px;left:50%;transform:translateX(-50%);z-index:15000;background:rgba(10,8,4,0.92);border:2px solid #ffd700;border-radius:16px;padding:12px;display:flex;flex-direction:column;gap:10px;max-width:94vw;';
sm.innerHTML = 'SCULPT โ digital clay
'
+ ''
+ ''
+ ''
+ ''
+ '
'
+ ''
+ 'POWER'
+ ''
+ '
'
+ ''
+ ''
+ ''
+ '
';
var st = document.createElement('style');
st.textContent = '[data-brush]{background:#1a1a1a;color:#ffd700;border:1px solid #ffd700;border-radius:8px;padding:12px 16px;font-size:14px;cursor:pointer;} [data-brush].active{background:#ffd700;color:#111;}';
document.head.appendChild(st);
document.body.appendChild(sm);
sm.querySelectorAll('[data-brush]').forEach(function(b){
b.onclick = function(){
sm.querySelectorAll('[data-brush]').forEach(function(x){ x.classList.remove('active'); });
b.classList.add('active');
_sculptBrush = b.getAttribute('data-brush');
};
});
sm.querySelector('[data-brush="smooth"]').classList.add('active');
document.getElementById('sculptPower').oninput = function(){ _sculptIntensity = parseFloat(this.value); };
document.getElementById('sculptApply').onclick = function(){ applySculpt(); };
document.getElementById('sculptClose').onclick = function(){ toggleSculptMode(); };
}else{
sm.style.display = 'flex';
}
codeStatus('sculpt mode โ ' + _sculptBrush);
}else if(sm){
sm.style.display = 'none';
codeStatus('sculpt closed');
}
}
function applySculpt(){
try{
var target = window._highlighted || window._selectedBlock;
if(!target){ codeStatus('no block selected'); return; }
var brush = _sculptBrush;
var power = _sculptIntensity;
// snapshot for undo
var snapshots = [];
target.traverse(function(m){
if(m.isMesh && m.geometry && m.geometry.attributes && m.geometry.attributes.position){
var pos = m.geometry.attributes.position;
var orig = new Float32Array(pos.array);
snapshots.push({mesh:m, orig:orig});
var norm = m.geometry.attributes.normal;
for(var i=0; i