Vehicle Editor - Part Tree

-- Open part tree
extensions.editor_vehicleEditor_staticEditor_vePartTree.open()

-- Toggle "Raw Data" checkbox to see unprocessed JBeam data vs schema-processed

-- Tree rendering uses recursive _renderNode():
-- Each table entry gets: tree node, selection, visibility, edit, highlight buttons
-- Clicking selects and highlights corresponding AST nodes in text view

-- Node picking uses sphere intersection:
-- local dist, _ = intersectsRay_Sphere(rayStartPos, rayDir, nodePos, nodeCollisionRadius)
-- if dist and dist < 100 then
--   table.insert(hitNodes, {node, pos, keyInPickedNodes})
-- end

-- Beam picking uses closest line points:
-- local xnorm1, xnorm2 = closestLinePoints(rayStartPos, rayEndPos, p1, p2)
-- if xnorm2 >= 0 and xnorm2 <= 1 then
--   -- check perpendicular distance against beamCollisionRadius
-- end

-- Virtual nodes (referenced from other parts) are auto-loaded:
-- local node = getNodefromAllParts(nodeId)
-- node.__virtual = true  -- rendered with translucent color

-- Multi-selection with Shift key:
-- if editor.keyModifiers.shift then
--   table.insert(vEditor.selectedNodes, chosenNodeData.node)
--   _selectAndHighlightNode(chosenNodeData.node)
-- end

-- Spawning with selected part as main:
-- vehicleConfig.mainPartName = vEditor.selectedPart
-- veh.partConfig = serialize(vehicleConfig)
-- veh:spawnObjectWithPosRot(pos.x, pos.y, pos.z, 0,0,0,1, true)

-- AST is cached and cleared on file change:
-- M.onFileChanged = function(filename, type)
--   if filename == astFilename then ast = nil end
-- end