akkartik/mastodon-unfurl.love - Change 25UHVUGNT3ANOGCQLL6GG6NNV4SLWLAMPME45JHWLLC2KK4GJO2QC

render edges

There's one major issue: the initial load has incorrect box heights. I have to connect with the driver before things look right.

Created by Kartik K. Agaram on February 18, 2023

25UHVUGNT3ANOGCQLL6GG6NNV4SLWLAMPME45JHWLLC2KK4GJO2QC

Dependencies

In channels

main

Change contents

File deletion: notes
BF:BFD[3.2] → [4.57:86]
BF:BFD[4.86] → [4.7:7]
B:BD[4.7] → [4.8:56]
```
remember cursor position within each definition
```
Replacement in head at line 1 [5.10815]
B:BD[5.10815] → [2.77350:77353]
```
545
```
[5.10815]
```
578
```

File addition: 0578-on.code_change (----------)

[3.2]

on.code_change = function()
	print('code changed')
	A(Input_filename)  -- just in case we edited something
end

File addition: 0578-fwmanifest (----------)

[3.2]

{"font":353,"add_thick_line":400,"compute_ntracks":519,"Cursor_node":172,"Input_filename":436,"on.text_input":388,"ntracks":505,"box_height":345,"Surface":434,"compute_layout":385,"line_height":365,"on.code_change":578,"dehtml":456,"Viewport":303,"schema1_of_y":366,"add_node":576,"initialize_editor":338,"on.initialize":446,"to_text":180,"A":474,"load_from_iterator":463,"B":379,"fw_parent":577,"on.draw":418,"fw_app":"mastodon-luaML","on.mouse_press":179,"render_node_and_descendants":577,"scale":7,"vx":5,"y_of_schema1":364,"split_lines":469,"vy":8,"copy_shape":396,"add_edge":575,"render_thread_to_surface":571,"on":1,"on.mouse_release":367,"update_editor_box":430,"on.update":368,"on.keychord_press":391}

File addition: 0577-render_node_and_descendants (----------)

[3.2]

render_node_and_descendants = function(nodes, id, y, xlo, xhi, grandparent_surface_node)
	-- draw a parent 'id' and its children
	-- also draw an edge from grandparent to parent if provided
	-- position the root between xlo and xhi to be closer to children with fewer tracks
	local parent = nodes[id]
	if parent.children == nil then
		add_node(xlo, y, parent.content, grandparent_surface_node)
		return
	end
	local parent_xlo
	if #parent.children <= 1 then
		parent_xlo = xlo
	else
		local total_boundaries = 0
		local curr_boundary = xlo
		for child_idx = 1,#parent.children-1 do
			local child_id = parent.children[child_idx]
			local child = nodes[child_id]
			curr_boundary = curr_boundary + 620 * child.ntracks
			total_boundaries = total_boundaries + curr_boundary
		end
		local parent_x = total_boundaries / (#parent.children-1)
		parent_xlo = parent_x - 620/2
	end
	local parent_surface_node = add_node(parent_xlo, y, parent.content, grandparent_surface_node)
	local parent_height = box_height(parent_surface_node)
	local curr_boundary = xlo
	for _,child_id in ipairs(parent.children) do
		local child = nodes[child_id]
		render_node_and_descendants(nodes, child_id, y + parent_height + 50, curr_boundary, curr_boundary + 620*child.ntracks, parent_surface_node)
		curr_boundary = curr_boundary + 620*child.ntracks
	end
end

File addition: 0577-fwmanifest (----------)

[3.2]

{"font":353,"add_thick_line":400,"compute_ntracks":519,"Cursor_node":172,"Input_filename":436,"on.text_input":388,"ntracks":505,"box_height":345,"Surface":434,"compute_layout":385,"line_height":365,"on.code_change":473,"dehtml":456,"Viewport":303,"schema1_of_y":366,"add_node":576,"initialize_editor":338,"on.initialize":446,"to_text":180,"A":474,"load_from_iterator":463,"B":379,"fw_parent":576,"on.draw":418,"fw_app":"mastodon-luaML","on.mouse_press":179,"render_node_and_descendants":577,"scale":7,"vx":5,"y_of_schema1":364,"split_lines":469,"vy":8,"copy_shape":396,"add_edge":575,"render_thread_to_surface":571,"on":1,"on.mouse_release":367,"update_editor_box":430,"on.update":368,"on.keychord_press":391}

File addition: 0576-fwmanifest (----------)

[3.2]

{"font":353,"add_thick_line":400,"compute_ntracks":519,"Cursor_node":172,"Input_filename":436,"on.text_input":388,"ntracks":505,"box_height":345,"Surface":434,"compute_layout":385,"line_height":365,"on.code_change":473,"dehtml":456,"Viewport":303,"schema1_of_y":366,"add_node":576,"initialize_editor":338,"on.initialize":446,"to_text":180,"A":474,"load_from_iterator":463,"B":379,"fw_parent":575,"on.draw":418,"fw_app":"mastodon-luaML","on.mouse_press":179,"render_node_and_descendants":565,"scale":7,"vx":5,"y_of_schema1":364,"split_lines":469,"vy":8,"copy_shape":396,"add_edge":575,"render_thread_to_surface":571,"on":1,"on.mouse_release":367,"update_editor_box":430,"on.update":368,"on.keychord_press":391}

File addition: 0576-add_node (----------)

[3.2]

add_node = function(x, y, text, parent_surface_node)
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	if parent_surface_node then
		add_edge(surface_node, parent_surface_node)
	end
	return surface_node
end

File addition: 0575-fwmanifest (----------)

[3.2]

{"font":353,"add_thick_line":400,"compute_ntracks":519,"Cursor_node":172,"Input_filename":436,"on.text_input":388,"ntracks":505,"box_height":345,"Surface":434,"compute_layout":385,"line_height":365,"on.code_change":473,"dehtml":456,"Viewport":303,"schema1_of_y":366,"add_node":574,"initialize_editor":338,"on.initialize":446,"to_text":180,"A":474,"load_from_iterator":463,"B":379,"fw_parent":574,"on.draw":418,"fw_app":"mastodon-luaML","on.mouse_press":179,"render_node_and_descendants":565,"scale":7,"vx":5,"y_of_schema1":364,"split_lines":469,"vy":8,"copy_shape":396,"add_edge":575,"render_thread_to_surface":571,"on":1,"on.mouse_release":367,"update_editor_box":430,"on.update":368,"on.keychord_press":391}

File addition: 0575-add_edge (----------)

[3.2]

add_edge = function(node, parent)
	local line = {
		type='line',
		data={
			parent.x + 600/2, parent.y + box_height(parent),
			node.x + 600/2, node.y,
		},
	}
	table.insert(Surface, line)
end

File addition: 0574-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":571,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":573,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":574,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":565,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":573,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0574-add_node (----------)

[3.2]

add_node = function(x, y, text, parent_surface_node)
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	if parent_surface_node then  -- and N_edges > 0 then
		add_edge(surface_node, parent_surface_node)
		N_edges = N_edges - 1
	end
	return surface_node
end

File addition: 0573-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":571,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":572,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":568,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":565,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":573,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0573-add_edge (----------)

[3.2]

add_edge = function(node, parent)
	print('add edge', node.x, node.y, parent.x, parent.y)
	local line = {
		type='line',
		data={
			parent.x + 600/2, parent.y + box_height(parent),
			node.x + 600/2, node.y,
		},
	}
	print('add edge 2', line.data[2], line.data[4])
	table.insert(Surface, line)
end

File addition: 0572-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":571,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":571,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":568,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":565,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":572,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0572-add_edge (----------)

[3.2]

add_edge = function(node, parent)
	print('add edge', node.x, node.y, parent.x, parent.y)
	local line = {
		type='line',
		data={
			parent.x + 600/2, parent.y + box_height(node),
			node.x + 600/2, node.y,
		},
	}
	print('add edge 2', line.data[2], line.data[4])
	table.insert(Surface, line)
end

File addition: 0571-render_thread_to_surface (----------)

[3.2]

render_thread_to_surface = function(thread_data)
	-- design constraints:
	--   trees only, no graphs or DAGs
	--   parents above children
	--   a child shares its parent's column exactly only if it's an only child
	--   parents can overlap columns with children and more distant descendants
	--   siblings never share a column
	--   siblings never overlap columns
	--   siblings always occupy the same row
	--   cousins/aunts/nephews never overlap columns
	Surface = {}
	-- compute mapping from ids to nodes
	local nodes = {}  -- id to object
	nodes[thread_data.id] = thread_data
	for _,x in ipairs(thread_data.descendants) do
		nodes[x.id] = x
	end
	local root = thread_data
	-- compute children
	for _,x in pairs(nodes) do
		parent_id = x.in_reply_to_id
		if x.id ~= root.id then
			assert(parent_id)
			local parent = nodes[parent_id]
			if parent.children == nil then
				parent.children = {}
			end
			table.insert(parent.children, x.id)
		end
	end
	-- sort children by time
	for _,x in pairs(nodes) do
		if x.children then
			table.sort(x.children)
		end
	end
	-- compute number of tracks needed
	for _,x in pairs(nodes) do
		if x.ntracks == nil then
			x.ntracks = compute_ntracks(nodes, x)
		end
	end
	-- prepare the tracks
	-- each track is 600px + 20px of gutter between nodes
	N_edges = 2
	render_node_and_descendants(nodes, root.id, --[[y]] 0, --[[xlo]] 0, --[[xhi]] 620 * root.ntracks)
end

File addition: 0571-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":571,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":570,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":568,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":565,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0570-render_thread_to_surface (----------)

[3.2]

render_thread_to_surface = function(thread_data)
	-- design constraints:
	--   trees only, no graphs or DAGs
	--   parents above children
	--   a child shares its parent's column exactly only if it's an only child
	--   parents can overlap columns with children and more distant descendants
	--   siblings never share a column
	--   siblings never overlap columns
	--   siblings always occupy the same row
	--   cousins/aunts/nephews never overlap columns
	Surface = {}
	-- compute mapping from ids to nodes
	local nodes = {}  -- id to object
	nodes[thread_data.id] = thread_data
	for _,x in ipairs(thread_data.descendants) do
		nodes[x.id] = x
	end
	local root = thread_data
	-- compute children
	for _,x in pairs(nodes) do
		parent_id = x.in_reply_to_id
		if x.id ~= root.id then
			assert(parent_id)
			local parent = nodes[parent_id]
			if parent.children == nil then
				parent.children = {}
			end
			table.insert(parent.children, x.id)
		end
	end
	-- sort children by time
	for _,x in pairs(nodes) do
		if x.children then
			table.sort(x.children)
		end
	end
	-- compute number of tracks needed
	for _,x in pairs(nodes) do
		if x.ntracks == nil then
			x.ntracks = compute_ntracks(nodes, x)
		end
	end
	-- prepare the tracks
	-- each track is 600px + 20px of gutter between nodes
	N_edges = 1
	render_node_and_descendants(nodes, root.id, --[[y]] 0, --[[xlo]] 0, --[[xhi]] 620 * root.ntracks)
end

File addition: 0570-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":570,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":569,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":568,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":565,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0569-render_thread_to_surface (----------)

[3.2]

render_thread_to_surface = function(thread_data)
	-- design constraints:
	--   trees only, no graphs or DAGs
	--   parents above children
	--   a child shares its parent's column exactly only if it's an only child
	--   parents can overlap columns with children and more distant descendants
	--   siblings never share a column
	--   siblings never overlap columns
	--   siblings always occupy the same row
	--   cousins/aunts/nephews never overlap columns
	Surface = {}
	-- compute mapping from ids to nodes
	local nodes = {}  -- id to object
	nodes[thread_data.id] = thread_data
	for _,x in ipairs(thread_data.descendants) do
		nodes[x.id] = x
	end
	local root = thread_data
	-- compute children
	for _,x in pairs(nodes) do
		parent_id = x.in_reply_to_id
		if x.id ~= root.id then
			assert(parent_id)
			local parent = nodes[parent_id]
			if parent.children == nil then
				parent.children = {}
			end
			table.insert(parent.children, x.id)
		end
	end
	-- sort children by time
	for _,x in pairs(nodes) do
		if x.children then
			table.sort(x.children)
		end
	end
	-- compute number of tracks needed
	for _,x in pairs(nodes) do
		if x.ntracks == nil then
			x.ntracks = compute_ntracks(nodes, x)
		end
	end
	-- prepare the tracks
	-- each track is 600px + 20px of gutter between nodes
	N_edges = 2
	render_node_and_descendants(nodes, root.id, --[[y]] 0, --[[xlo]] 0, --[[xhi]] 620 * root.ntracks)
end

File addition: 0569-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":569,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":568,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":568,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":565,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0568-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":567,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":567,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":568,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":565,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0568-add_node (----------)

[3.2]

add_node = function(x, y, text, parent_surface_node)
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	if parent_surface_node and N_edges > 0 then
		add_edge(surface_node, parent_surface_node)
		N_edges = N_edges - 1
	end
	return surface_node
end

File addition: 0567-render_thread_to_surface (----------)

[3.2]

render_thread_to_surface = function(thread_data)
	-- design constraints:
	--   trees only, no graphs or DAGs
	--   parents above children
	--   a child shares its parent's column exactly only if it's an only child
	--   parents can overlap columns with children and more distant descendants
	--   siblings never share a column
	--   siblings never overlap columns
	--   siblings always occupy the same row
	--   cousins/aunts/nephews never overlap columns
	Surface = {}
	-- compute mapping from ids to nodes
	local nodes = {}  -- id to object
	nodes[thread_data.id] = thread_data
	for _,x in ipairs(thread_data.descendants) do
		nodes[x.id] = x
	end
	local root = thread_data
	-- compute children
	for _,x in pairs(nodes) do
		parent_id = x.in_reply_to_id
		if x.id ~= root.id then
			assert(parent_id)
			local parent = nodes[parent_id]
			if parent.children == nil then
				parent.children = {}
			end
			table.insert(parent.children, x.id)
		end
	end
	-- sort children by time
	for _,x in pairs(nodes) do
		if x.children then
			table.sort(x.children)
		end
	end
	-- compute number of tracks needed
	for _,x in pairs(nodes) do
		if x.ntracks == nil then
			x.ntracks = compute_ntracks(nodes, x)
		end
	end
	-- prepare the tracks
	-- each track is 600px + 20px of gutter between nodes
	N_edges = 1
	render_node_and_descendants(nodes, root.id, --[[y]] 0, --[[xlo]] 0, --[[xhi]] 620 * root.ntracks)
end

File addition: 0567-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":567,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":566,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":563,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":565,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0566-render_thread_to_surface (----------)

[3.2]

render_thread_to_surface = function(thread_data)
	-- design constraints:
	--   trees only, no graphs or DAGs
	--   parents above children
	--   a child shares its parent's column exactly only if it's an only child
	--   parents can overlap columns with children and more distant descendants
	--   siblings never share a column
	--   siblings never overlap columns
	--   siblings always occupy the same row
	--   cousins/aunts/nephews never overlap columns
	Surface = {}
	-- compute mapping from ids to nodes
	local nodes = {}  -- id to object
	nodes[thread_data.id] = thread_data
	for _,x in ipairs(thread_data.descendants) do
		nodes[x.id] = x
	end
	local root = thread_data
	-- compute children
	for _,x in pairs(nodes) do
		parent_id = x.in_reply_to_id
		if x.id ~= root.id then
			assert(parent_id)
			local parent = nodes[parent_id]
			if parent.children == nil then
				parent.children = {}
			end
			table.insert(parent.children, x.id)
		end
	end
	-- sort children by time
	for _,x in pairs(nodes) do
		if x.children then
			table.sort(x.children)
		end
	end
	-- compute number of tracks needed
	for _,x in pairs(nodes) do
		if x.ntracks == nil then
			x.ntracks = compute_ntracks(nodes, x)
		end
	end
	-- prepare the tracks
	-- each track is 600px + 20px of gutter between nodes
	render_node_and_descendants(nodes, root.id, --[[y]] 0, --[[xlo]] 0, --[[xhi]] 620 * root.ntracks)
end

File addition: 0566-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":566,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":565,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":563,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":565,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0565-render_node_and_descendants (----------)

[3.2]

render_node_and_descendants = function(nodes, id, y, xlo, xhi, grandparent_surface_node)
	-- draw a parent 'id' and its children
	-- also draw an edge from grandparent to parent if provided
	-- position the root between xlo and xhi to be closer to children with fewer tracks
	local parent = nodes[id]
	if parent.children == nil then
		add_node(xlo, y, parent.content, grandparent_surface_node)
		return
	end
	local parent_xlo
	if #parent.children <= 1 then
		parent_xlo = xlo
	else
		local total_boundaries = 0
		local curr_boundary = xlo
		for child_idx = 1,#parent.children-1 do
			local child_id = parent.children[child_idx]
			local child = nodes[child_id]
			curr_boundary = curr_boundary + 620 * child.ntracks
			total_boundaries = total_boundaries + curr_boundary
		end
		local parent_x = total_boundaries / (#parent.children-1)
		parent_xlo = parent_x - 620/2
	end
	local parent_surface_node = add_node(parent_xlo, y, parent.content, grandparent_surface_node)
	local parent_height = box_height(parent_surface_node)
	print(id, parent_height)
	local curr_boundary = xlo
	for _,child_id in ipairs(parent.children) do
		local child = nodes[child_id]
		render_node_and_descendants(nodes, child_id, y + parent_height + 50, curr_boundary, curr_boundary + 620*child.ntracks, parent_surface_node)
		curr_boundary = curr_boundary + 620*child.ntracks
	end
end

File addition: 0565-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":564,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":563,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":565,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0564-render_node_and_descendants (----------)

[3.2]

render_node_and_descendants = function(nodes, id, y, xlo, xhi, grandparent_surface_node)
	-- draw a parent 'id' and its children
	-- also draw an edge from grandparent to parent if provided
	print(id)
	-- position the root between xlo and xhi to be closer to children with fewer tracks
	local parent = nodes[id]
	if parent.children == nil then
		add_node(xlo, y, parent.content, grandparent_surface_node)
		return
	end
	local parent_xlo
	if #parent.children <= 1 then
		parent_xlo = xlo
	else
		local total_boundaries = 0
		local curr_boundary = xlo
		for child_idx = 1,#parent.children-1 do
			local child_id = parent.children[child_idx]
			local child = nodes[child_id]
			curr_boundary = curr_boundary + 620 * child.ntracks
			total_boundaries = total_boundaries + curr_boundary
		end
		local parent_x = total_boundaries / (#parent.children-1)
		parent_xlo = parent_x - 620/2
	end
	local parent_surface_node = add_node(parent_xlo, y, parent.content, grandparent_surface_node)
	local parent_height = box_height(parent_surface_node)
	print(id, parent_height)
	local curr_boundary = xlo
	for _,child_id in ipairs(parent.children) do
		local child = nodes[child_id]
		render_node_and_descendants(nodes, child_id, y + parent_height + 50, curr_boundary, curr_boundary + 620*child.ntracks, parent_surface_node)
		curr_boundary = curr_boundary + 620*child.ntracks
	end
end

File addition: 0564-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":563,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":563,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":564,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0563-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":562,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":563,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":562,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0563-add_node (----------)

[3.2]

add_node = function(x, y, text, parent_surface_node)
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	if parent_surface_node then
		add_edge(surface_node, parent_surface_node)
	end
	return surface_node
end

File addition: 0562-render_node_and_descendants (----------)

[3.2]

render_node_and_descendants = function(nodes, id, y, xlo, xhi, grandparent_surface_node)
	-- draw a parent 'id' and its children
	-- also draw an edge from grandparent to parent if provided
	print(id)
	-- position the root between xlo and xhi to be closer to children with fewer tracks
	local parent = nodes[id]
	if parent.children == nil then
		add_node(xlo, y, parent.content, grandparent_surface_node)
		return
	end
	local parent_xlo
	if #parent.children <= 1 then
		parent_xlo = xlo
	else
		local total_boundaries = 0
		local curr_boundary = xlo
		for child_idx = 1,#parent.children-1 do
			local child_id = parent.children[child_idx]
			local child = nodes[child_id]
			curr_boundary = curr_boundary + 620 * child.ntracks
			total_boundaries = total_boundaries + curr_boundary
		end
		local parent_x = total_boundaries / (#parent.children-1)
		parent_xlo = parent_x - 620/2
	end
	local parent_surface_node = add_node(parent_xlo, y, parent.content, grandparent_surface_node)
	local curr_boundary = xlo
	for _,child_id in ipairs(parent.children) do
		local child = nodes[child_id]
		render_node_and_descendants(nodes, child_id, y + box_height(parent_surface_node) + 50, curr_boundary, curr_boundary + 620*child.ntracks, parent_surface_node)
		curr_boundary = curr_boundary + 620*child.ntracks
	end
end

File addition: 0562-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":561,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":560,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":562,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0561-render_node_and_descendants (----------)

[3.2]

render_node_and_descendants = function(nodes, id, y, xlo, xhi, grandparent_surface_node)
	-- draw a parent 'id' and its children
	-- also draw an edge from grandparent to parent if provided
	print(id)
	-- position the root between xlo and xhi to be closer to children with fewer tracks
	local parent = nodes[id]
	if parent.children == nil or #parent.children <= 1 then
		add_node(xlo, y, parent.content, grandparent_surface_node)
		return
	end
	local total_boundaries = 0
	local curr_boundary = xlo
	for child_idx = 1,#parent.children-1 do
		local child_id = parent.children[child_idx]
		local child = nodes[child_id]
		curr_boundary = curr_boundary + 620 * child.ntracks
		total_boundaries = total_boundaries + curr_boundary
	end
	local parent_x = total_boundaries / (#parent.children-1)
	local parent_xlo = parent_x - 620/2
	local parent_surface_node = add_node(parent_xlo, y, parent.content, grandparent_surface_node)
	local curr_boundary = xlo
	for _,child_id in ipairs(parent.children) do
		local child = nodes[child_id]
		render_node_and_descendants(nodes, child_id, y + box_height(parent_surface_node) + 50, curr_boundary, curr_boundary + 620*child.ntracks, parent_surface_node)
		curr_boundary = curr_boundary + 620*child.ntracks
	end
end

File addition: 0561-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":560,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":560,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":561,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0560-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":559,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":560,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":554,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0560-add_node (----------)

[3.2]

add_node = function(x, y, text, parent_surface_node)
	print('add node', x)
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	print('aa 1', surface_node.x)
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	print('aa 2', surface_node.x)
	if parent_surface_node then
		print('aa', surface_node.x, parent_surface_node.x)
		add_edge(surface_node, parent_surface_node)
	end
	return surface_node
end

File addition: 0559-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":558,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":559,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":554,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0559-add_node (----------)

[3.2]

add_node = function(x, y, text, parent_surface_node)
	print('add node', x)
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	if parent_surface_node then
		print('aa', surface_node.x, parent_surface_node.x)
		add_edge(surface_node, parent_surface_node)
	end
	return surface_node
end

File addition: 0558-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":557,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":557,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":554,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":558,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0558-add_edge (----------)

[3.2]

add_edge = function(node, parent)
	print('add edge', node.x, node.y, parent.x, parent.y)
	local line = {
		type='line',
		data={
			parent.x + 600/2, parent.y + box_height(node),
			node.x + 600/2, node.y,
		},
	}
	table.insert(Surface, line)
end

File addition: 0557-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":556,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":557,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":554,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":556,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0557-add_node (----------)

[3.2]

add_node = function(x, y, text, parent_surface_node)
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	if parent_surface_node then
		add_edge(surface_node, parent_surface_node)
	end
	return surface_node
end

File addition: 0556-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":555,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":555,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":554,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":556,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0556-add_edge (----------)

[3.2]

add_edge = function(node, parent)
	print('add edge', node.id, parent.id)
	local line = {
		type='line',
		data={
			parent.x + 600/2, parent.y + box_height(node),
			node.x + 600/2, node.y,
		},
	}
	table.insert(Surface, line)
end

File addition: 0555-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":554,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":555,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":554,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":551,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0555-add_node (----------)

[3.2]

add_node = function(x, y, text, parent_surface_node)
	print('add node')
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	if parent_surface_node then
		add_edge(surface_node, parent_surface_node)
	end
	return surface_node
end

File addition: 0554-render_node_and_descendants (----------)

[3.2]

render_node_and_descendants = function(nodes, id, y, xlo, xhi, grandparent_surface_node)
	-- draw a parent 'id' and its children
	-- also draw an edge from grandparent to parent if provided
	print(id)
	-- position the root between xlo and xhi to be closer to children with fewer tracks
	local parent = nodes[id]
	if parent.children == nil then
		add_node(xlo, y, parent.content, grandparent_surface_node)
		return
	end
	local total_boundaries = 0
	local curr_boundary = xlo
	for child_idx = 1,#parent.children-1 do
		local child_id = parent.children[child_idx]
		local child = nodes[child_id]
		curr_boundary = curr_boundary + 620 * child.ntracks
		total_boundaries = total_boundaries + curr_boundary
	end
	local parent_x = total_boundaries / (#parent.children-1)
	local parent_xlo = parent_x - 620/2
	local parent_surface_node = add_node(parent_xlo, y, parent.content, grandparent_surface_node)
	local curr_boundary = xlo
	for _,child_id in ipairs(parent.children) do
		local child = nodes[child_id]
		render_node_and_descendants(nodes, child_id, y + box_height(parent_surface_node) + 50, curr_boundary, curr_boundary + 620*child.ntracks, parent_surface_node)
		curr_boundary = curr_boundary + 620*child.ntracks
	end
end

File addition: 0554-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":553,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":552,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":554,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":551,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0553-render_node_and_descendants (----------)

[3.2]

render_node_and_descendants = function(nodes, id, y, xlo, xhi, grandparent_surface_node)
	-- draw a parent 'id' and its children
	-- also draw an edge from grandparent to parent if provided
	print(id)
	-- position the root between xlo and xhi to be closer to children with fewer tracks
	local parent = nodes[id]
	if parent.children == nil then
		add_node(xlo, y, parent.content, grandparent_surface_node)
		return
	end
	local total_boundaries = 0
	local curr_boundary = xlo
	for child_idx = 1,#parent.children-1 do
		local child_id = parent.children[child_idx]
		local child = nodes[child_id]
		curr_boundary = curr_boundary + 620 * child.ntracks
		total_boundaries = total_boundaries + curr_boundary
	end
	local parent_x = total_boundaries / (#parent.children-1)
	local parent_xlo = parent_x - 620/2
	local parent_surface_node = add_node(parent_xlo, y, parent.content, grandparent)
	local curr_boundary = xlo
	for _,child_id in ipairs(parent.children) do
		local child = nodes[child_id]
		render_node_and_descendants(nodes, child_id, y + box_height(parent_surface_node) + 50, curr_boundary, curr_boundary + 620*child.ntracks, parent_surface_node)
		curr_boundary = curr_boundary + 620*child.ntracks
	end
end

File addition: 0553-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":552,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":552,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":553,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":551,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0552-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":551,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":552,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":547,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":551,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0552-add_node (----------)

[3.2]

add_node = function(x, y, text, parent)
	print('add node')
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	if parent then
		add_edge(node, parent)
	end
	return surface_node
end

File addition: 0551-fwmanifest (----------)

[3.2]

{"on.mouse_release":367,"on.update":368,"Cursor_node":172,"on.keychord_press":391,"on":1,"on.text_input":388,"render_thread_to_surface":525,"dehtml":456,"add_thick_line":400,"to_text":180,"copy_shape":396,"fw_parent":550,"fw_app":"mastodon-luaML","initialize_editor":338,"line_height":365,"update_editor_box":430,"compute_layout":385,"on.code_change":473,"box_height":345,"load_from_iterator":463,"schema1_of_y":366,"split_lines":469,"A":474,"add_node":550,"font":353,"on.initialize":446,"ntracks":505,"render_node_and_descendants":547,"compute_ntracks":519,"Input_filename":436,"Viewport":303,"B":379,"Surface":434,"vy":8,"scale":7,"add_edge":551,"y_of_schema1":364,"on.draw":418,"on.mouse_press":179,"vx":5}

File addition: 0551-add_edge (----------)

[3.2]

add_edge = function(node, parent)
	print('add edge')
	local line = {
		type='line',
		data={
			parent.x + 600/2, parent.y + box_height(node),
			node.x + 600/2, node.y,
		},
	}
	table.insert(Surface, line)
end

File addition: 0550-fwmanifest (----------)

[3.2]

{"schema1_of_y":366,"on.keychord_press":391,"split_lines":469,"fw_parent":549,"y_of_schema1":364,"fw_app":"mastodon-luaML","add_node":550,"render_node_and_descendants":547,"Input_filename":436,"Cursor_node":172,"compute_layout":385,"add_edge":548,"to_text":180,"scale":7,"initialize_editor":338,"on.text_input":388,"ntracks":505,"copy_shape":396,"compute_ntracks":519,"render_thread_to_surface":525,"line_height":365,"Surface":434,"add_thick_line":400,"dehtml":456,"on.draw":418,"on":1,"vx":5,"B":379,"Viewport":303,"update_editor_box":430,"on.mouse_press":179,"vy":8,"font":353,"A":474,"on.initialize":446,"load_from_iterator":463,"box_height":345,"on.mouse_release":367,"on.code_change":473,"on.update":368}

File addition: 0550-add_node (----------)

[3.2]

add_node = function(x, y, text, parent)
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	if parent then
		add_edge(node, parent)
	end
	return surface_node
end

File addition: 0549-fwmanifest (----------)

[3.2]

{"schema1_of_y":366,"on.keychord_press":391,"split_lines":469,"fw_parent":548,"y_of_schema1":364,"fw_app":"mastodon-luaML","add_node":549,"render_node_and_descendants":547,"Input_filename":436,"Cursor_node":172,"compute_layout":385,"add_edge":548,"to_text":180,"scale":7,"initialize_editor":338,"on.text_input":388,"ntracks":505,"copy_shape":396,"compute_ntracks":519,"render_thread_to_surface":525,"line_height":365,"Surface":434,"add_thick_line":400,"dehtml":456,"on.draw":418,"on":1,"vx":5,"B":379,"Viewport":303,"update_editor_box":430,"on.mouse_press":179,"vy":8,"font":353,"A":474,"on.initialize":446,"load_from_iterator":463,"box_height":345,"on.mouse_release":367,"on.code_change":473,"on.update":368}

File addition: 0549-add_node (----------)

[3.2]

add_node = function(x, y, text, parent)
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	add_edge(node, parent)
	return surface_node
end

File addition: 0548-fwmanifest (----------)

[3.2]

{"schema1_of_y":366,"on.keychord_press":391,"split_lines":469,"fw_parent":547,"y_of_schema1":364,"fw_app":"mastodon-luaML","add_node":546,"render_node_and_descendants":547,"Input_filename":436,"Cursor_node":172,"compute_layout":385,"add_edge":548,"to_text":180,"scale":7,"initialize_editor":338,"on.text_input":388,"ntracks":505,"copy_shape":396,"compute_ntracks":519,"render_thread_to_surface":525,"line_height":365,"Surface":434,"add_thick_line":400,"dehtml":456,"on.draw":418,"on":1,"vx":5,"B":379,"Viewport":303,"update_editor_box":430,"on.mouse_press":179,"vy":8,"font":353,"A":474,"on.initialize":446,"load_from_iterator":463,"box_height":345,"on.mouse_release":367,"on.code_change":473,"on.update":368}

File addition: 0548-add_edge (----------)

[3.2]

add_edge = function(node, parent)
	local line = {
		type='line',
		data={
			parent.x + 600/2, parent.y + box_height(node),
			node.x + 600/2, node.y,
		},
	}
	table.insert(Surface, line)
end

File addition: 0547-render_node_and_descendants (----------)

[3.2]

render_node_and_descendants = function(nodes, id, y, xlo, xhi, grandparent)
	-- draw a parent 'id' and its children
	-- also draw an edge from grandparent to parent if provided
	print(id)
	-- position the root between xlo and xhi to be closer to children with fewer tracks
	local parent = nodes[id]
	if parent.children == nil then
		add_node(xlo, y, parent.content, grandparent)
		return
	end
	local total_boundaries = 0
	local curr_boundary = xlo
	for child_idx = 1,#parent.children-1 do
		local child_id = parent.children[child_idx]
		local child = nodes[child_id]
		curr_boundary = curr_boundary + 620 * child.ntracks
		total_boundaries = total_boundaries + curr_boundary
	end
	local parent_x = total_boundaries / (#parent.children-1)
	local parent_xlo = parent_x - 620/2
	local parent_surface_node = add_node(parent_xlo, y, parent.content, grandparent)
	local curr_boundary = xlo
	for _,child_id in ipairs(parent.children) do
		local child = nodes[child_id]
		render_node_and_descendants(nodes, child_id, y + box_height(parent_surface_node) + 50, curr_boundary, curr_boundary + 620*child.ntracks)
		curr_boundary = curr_boundary + 620*child.ntracks
	end
end

File addition: 0547-fwmanifest (----------)

[3.2]

{"schema1_of_y":366,"on.keychord_press":391,"split_lines":469,"fw_parent":546,"y_of_schema1":364,"fw_app":"mastodon-luaML","add_node":546,"render_node_and_descendants":547,"Input_filename":436,"Cursor_node":172,"compute_layout":385,"to_text":180,"scale":7,"initialize_editor":338,"on.text_input":388,"ntracks":505,"copy_shape":396,"compute_ntracks":519,"render_thread_to_surface":525,"line_height":365,"Surface":434,"add_thick_line":400,"dehtml":456,"on.draw":418,"on":1,"vx":5,"B":379,"Viewport":303,"update_editor_box":430,"on.mouse_press":179,"vy":8,"font":353,"A":474,"on.initialize":446,"load_from_iterator":463,"box_height":345,"on.mouse_release":367,"on.code_change":473,"on.update":368}

File addition: 0546-fwmanifest (----------)

[3.2]

{"schema1_of_y":366,"on.keychord_press":391,"split_lines":469,"fw_parent":545,"y_of_schema1":364,"fw_app":"mastodon-luaML","add_node":546,"render_node_and_descendants":545,"Input_filename":436,"Cursor_node":172,"compute_layout":385,"to_text":180,"scale":7,"initialize_editor":338,"on.text_input":388,"ntracks":505,"copy_shape":396,"compute_ntracks":519,"render_thread_to_surface":525,"line_height":365,"Surface":434,"add_thick_line":400,"dehtml":456,"on.draw":418,"on":1,"vx":5,"B":379,"Viewport":303,"update_editor_box":430,"on.mouse_press":179,"vy":8,"font":353,"A":474,"on.initialize":446,"load_from_iterator":463,"box_height":345,"on.mouse_release":367,"on.code_change":473,"on.update":368}

File addition: 0546-add_node (----------)

[3.2]

add_node = function(x, y, text, grandparent)
	local surface_node = {
		x=x, y=y,
		width=600,
		type='text',
		data=split_lines(dehtml(text)),
		bg={r=0.7,g=0.7, b=1.0},
	}
	compute_layout(surface_node, surface_node.x, surface_node.y, Surface)
	return surface_node
end

render edges

Dependencies

In channels

Change contents

File deletion: notes

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