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treenode.js
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treenode.js
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const TreeNodeColors = {
"default" : [180, 180, 180],
"green" : [38, 114, 17],
"blue" : [35, 62, 148],
"red" : [237, 30, 40],
"dark" : [0.08,0.08,0.08],
"highlighter" : [224,215,94],
}
class TreeNode
{
constructor(x,y, text)
{
this.xStart = x
this.yStart = y
this.xOff = 0
this.yOff = 0
this.x = x
this.y = y
this.lastX = x
this.lastY = y
this.text = text || ""
this.id = CurrentNodeID
this.children = []
this.childAnchorPoints = []
this.arrows = []
this.spaces = 0
this.width = 0
this.childWidth = 0
this.parent = null
this.dead = false
this.color = "default"
CurrentNodeID += 1
}
isHovered()
{
return Mouse.x >= this.x-this.textWidth()/2 && Mouse.y >= this.y-this.textHeight()/2 && Mouse.x <= this.x+this.textWidth()/2 && Mouse.y <= this.y+this.textHeight()/2
}
isSelected()
{
return SelectionList[this.id] === this
}
addParent()
{
let parent = new TreeNode(this.x,this.y)
if (this === Trees[0])
{
Trees[0] = parent
AddToSpatialHash(parent.x,parent.y, parent)
}
else if(this.parent && !this.parent.dead)
{
for (let i=0; i<this.parent.children.length; i++)
{
if (this.parent.children[i] === this)
{
this.parent.children[i] = parent
parent.parent = this.parent
break
}
}
}
parent.children.push(this)
parent.color = this.color
this.parent = parent
this.recalculate()
}
addChild(times)
{
for (let i=0; i<(times || 1); i++)
{
let child = new TreeNode(this.x,this.y)
this.children.push(child)
child.parent = this
child.color = this.color
child.recalculate()
}
AddChange()
}
delete()
{
if (!this.parent) { return }
this.dead = true
// remove myself from my parent's list of children
if (!this.parent.dead)
{
for (let i=0; i<this.parent.children.length; i++)
{
if (this.parent.children[i] === this)
{
this.parent.children.splice(i,1)
this.parent.recalculate()
}
}
}
RemoveFromSpatialHash(this.x,this.y, this)
SelectionList[this.id] = null
ScreenRefresh()
for (const key in this.children)
{
this.children[key].delete()
}
}
recalculate()
{
let total = 0
for (let i=0; i<this.children.length; i++)
{
let child = this.children[i]
let width = child.width
this.childAnchorPoints[i] = total + width/2
total = total + width
}
for (let i=0; i<this.children.length; i++)
{
this.childAnchorPoints[i] = this.childAnchorPoints[i] - total/2
}
this.width = Math.max(total, this.textWidth()+4)
// update child positions
for (let i=0; i<this.children.length; i++)
{
let child = this.children[i]
child.lastX = child.x
child.lastY = child.y
child.xOff = this.childAnchorPoints[i]
child.yOff = this.lineHeight()
child.xStart = this.x
child.yStart = this.y
child.x = child.xOff + child.xStart
child.y = child.yOff + child.yStart
RemoveFromSpatialHash(child.lastX,child.lastY, child)
AddToSpatialHash(child.x,child.y, child)
}
// climb up the tree, recalculating
// then go down the tree updating relative positions
if (this.parent)
{
this.parent.recalculate()
}
else
{
for (let i=0; i<this.children.length; i++)
{
this.children[i].updateRelativePosition()
}
}
ScreenRefresh()
}
updateRelativePosition()
{
if (!this.parent) { return }
let lastX = this.x
let lastY = this.y
this.xStart = this.parent.x
this.yStart = this.parent.y
this.x = this.xOff + this.xStart
this.y = this.yOff + this.yStart
if (lastX !== this.x || lastY !== this.y)
{
RemoveFromSpatialHash(lastX,lastY, this)
AddToSpatialHash(this.x,this.y, this)
}
for (let i=0; i<this.children.length; i++)
{
this.children[i].updateRelativePosition()
}
}
textWidth()
{
let [mainText, subText] = this.getMainTextAndSubText()
textSize(FontSize)
let w1 = textWidth(mainText)
textSize(SubFontSize)
let w2 = textWidth(subText)
textSize(FontSize)
return Math.max(w1 + w2 + 10, 45)
}
textHeight()
{
return FontSize+6
}
lineHeight()
{
return 45
}
totalHeight()
{
let biggestHeight = 0
for (let i=0; i<this.children.length; i++)
{
biggestHeight = Math.max(biggestHeight, this.children[i].totalHeight() + this.lineHeight())
}
for (let i=0; i<this.arrows.length; i++)
{
let arrow = this.arrows[i]
biggestHeight = Math.max(biggestHeight, arrow.height+8)
}
return biggestHeight
}
keyTyped(text)
{
this.text = this.text + text
this.recalculate()
TreeHasChanged = true
if (text == " ") {
this.spaces += 1
}
}
keyPressed(keyCode)
{
// backspace
if (keyCode === 8)
{
// ctrl-backspace deletes all text in node
if (ModifierKey())
{
this.text = ""
AddChange()
}
else
{
this.text = this.text.slice(0,-1)
TreeHasChanged = true
}
this.countSpaces()
this.recalculate()
}
// ctrl-a adds a child
if (keyCode === 65 && ModifierKey())
{
this.addChild()
this.recalculate()
}
// delete key
if (keyCode === 46)
{
let index = null
if (this.parent)
{
// try to find sibling to my left
for (let i=0; i<this.parent.children.length; i++)
{
if (this.parent.children[i] === this)
{
index = i
}
}
}
this.delete()
NextSelectionList[this.id] = null
AddChange()
if (this.parent)
{
index = Math.max(index-1, 0)
let node = this.parent.children[index]
if (node && !node.dead)
NextSelectionList[node.id] = node
else if (!this.parent.dead)
NextSelectionList[this.parent.id] = this.parent
}
}
if (keyIsDown(16))
{
// move around this node with arrows keys holding shift
if (keyCode == 37)
{
this.moveLeft()
}
if (keyCode == 38)
{
this.moveUp()
}
if (keyCode == 39)
{
this.moveRight()
}
}
else
{
// just move selection around when pressing the arrows keys without shift
if (keyCode == 37)
this.selectSiblingInDirection(-1)
if (keyCode == 39)
this.selectSiblingInDirection(1)
if (keyCode == 38 && this.parent)
{
NextSelectionList[this.parent.id] = this.parent
NextSelectionList[this.id] = null
AttemptAddChange()
ScreenRefresh()
}
if (keyCode == 40 && this.children.length > 0)
{
let closest = undefined
let closeness = Infinity
for (const child of this.children) {
let dist = Math.sqrt(Math.pow(this.x - child.x, 2) + Math.pow(this.y - child.y, 2))
if (dist < closeness) {
closeness = dist
closest = child
}
}
NextSelectionList[this.id] = null
NextSelectionList[closest.id] = closest
AttemptAddChange()
ScreenRefresh()
}
}
// copy
if (keyCode == 67 && ModifierKey())
{
let textArea = document.createElement("textarea")
textArea.value = this.text
textArea.style.position = "fixed"
document.body.appendChild(textArea)
textArea.focus()
textArea.select()
document.body.removeChild(textArea)
}
// cycle through things with tab
// cycle backwards when holding shift
if (keyCode == 9)
{
if (keyIsDown(16))
{
if (!this.selectSiblingInDirection(-1))
{
if (this.children.length > 0)
{
// if i have children, go down
NextSelectionList[this.id] = null
NextSelectionList[this.children[this.children.length-1].id] = this.children[this.children.length-1]
ScreenRefresh()
}
else if (this.parent)
{
// otherwise, go up
NextSelectionList[this.id] = null
NextSelectionList[this.parent.id] = this.parent
ScreenRefresh()
}
}
}
else
{
if (!this.selectSiblingInDirection(1))
{
if (this.children.length > 0)
{
// if i have children, go down
NextSelectionList[this.id] = null
NextSelectionList[this.children[0].id] = this.children[0]
ScreenRefresh()
}
else if (this.parent)
{
// otherwise, go up
NextSelectionList[this.id] = null
NextSelectionList[this.parent.id] = this.parent
ScreenRefresh()
}
}
}
}
}
selectSiblingInDirection(direction)
{
if (!SelectionList[this.id] || !this.parent) { return }
AttemptAddChange()
let bestv = Infinity
let bestn = undefined
const recursedown = (node, value) => {
if (value > 0) {
for (const child of node.children) {
let get = recursedown(child, value-1)
if (typeof get == "undefined") continue
let diff = Math.abs(get.x - this.x)
if (direction == 1) {
if (get.x > this.x && diff < bestv) {
bestv = diff
bestn = get
}
} else {
if (get.x < this.x && diff < bestv) {
bestv = diff
bestn = get
}
}
}
} else {
return node
}
return bestn
}
let parent = this.parent
let count = 1
while (parent) {
recursedown(parent, count)
parent = parent.parent
count += 1
}
if (!bestn) return false
NextSelectionList[this.id] = null
NextSelectionList[bestn.id] = bestn
ScreenRefresh()
return true
}
paste(text)
{
this.text = text
this.countSpaces()
this.recalculate()
AddChange()
}
countSpaces()
{
this.spaces = 0
for (let i=0; i<this.text.length; i++)
{
if (this.text[i] == " ")
{
this.spaces += 1
}
}
}
moveUp()
{
if (this.parent && this.parent.parent)
{
for (let i=0; i<this.parent.children.length; i++)
{
if (this.parent.children[i] === this)
{
this.parent.children.splice(i,1)
break
}
}
this.parent.recalculate()
this.parent.parent.children.push(this)
this.parent = this.parent.parent
this.recalculate()
TreeHasChanged = true
}
}
moveLeft()
{
if (!this.parent) { return }
for (let i=1; i<this.parent.children.length; i++)
{
if (this.parent.children[i] === this)
{
let sibling = this.parent.children[i-1]
this.parent.children[i-1] = this
this.parent.children[i] = sibling
this.recalculate()
TreeHasChanged = true
break
}
}
}
moveRight()
{
if (!this.parent) { return }
for (let i=0; i<this.parent.children.length-1; i++)
{
if (this.parent.children[i] === this)
{
let sibling = this.parent.children[i+1]
this.parent.children[i+1] = this
this.parent.children[i] = sibling
this.recalculate()
TreeHasChanged = true
break
}
}
}
mousePressed() { }
draw(drawSelected, xoff,yoff)
{
// don't draw selected nodes in the normal draw pass
// so that their halos can overlap other nodes
if (this.isSelected() && !drawSelected) { return }
// override the rendering functions
// when a render target is specified
let _fill = fill
let _noFill = noFill
let _noStroke = noStroke
let _stroke = stroke
let _strokeWeight = strokeWeight
let _line = line
let _rect = rect
let _text = text
let _textAlign = textAlign
let _textSize = textSize
let _textWidth = textWidth
let renderTarget = GetCurrentRenderTarget()
if (renderTarget)
{
_fill = renderTarget.fill
_noFill = renderTarget.noFill
_noStroke = renderTarget.noStroke
_stroke = renderTarget.stroke
_strokeWeight = renderTarget.strokeWeight
_line = renderTarget.line
_rect = renderTarget.rect
_text = renderTarget.text
_textAlign = renderTarget.textAlign
_textSize = renderTarget.textSize
_textWidth = renderTarget.textWidth
}
// can be shifted around when rendering to an image
xoff = xoff || 0
yoff = yoff || 0
let dx = this.x + xoff
let dy = this.y + yoff
//this.updateRelativePosition()
// draw all of this node's children
for (const key in this.children)
{
let child = this.children[key]
child.draw(false, xoff,yoff)
_stroke(0)
_strokeWeight(2)
if (child.spaces > 0)
{
_line(child.x + xoff - child.textWidth()/2,child.y + yoff - child.textHeight()/2, dx,dy + this.textHeight()/2)
_line(child.x + xoff + child.textWidth()/2,child.y + yoff - child.textHeight()/2, dx,dy + this.textHeight()/2)
_line(child.x + xoff + child.textWidth()/2,child.y + yoff - child.textHeight()/2, child.x + xoff - child.textWidth()/2, child.y + yoff - child.textHeight()/2)
}
else
{
_line(dx,dy + this.textHeight()/2, child.x + xoff,child.y + yoff - child.textHeight()/2)
}
}
// draw the actual node
_noStroke()
_fill(TreeNodeColors[this.color][0], TreeNodeColors[this.color][1], TreeNodeColors[this.color][2])
if (this.text.length > 0 && this.color == "default")
_fill(0,0,0,0)
_rect(dx - this.textWidth()/2,dy - this.textHeight()/2, this.textWidth(),this.textHeight())
// draw the selection halos only if not being rendered to an image
if (!renderTarget)
{
if (this.isSelected())
{
_stroke(0,0,0)
_strokeWeight(4)
_noFill()
let rad = 6
_rect(dx - this.textWidth()/2 - rad,dy - this.textHeight()/2 - rad, this.textWidth() + rad*2, this.textHeight() + rad*2)
}
else
{
if (this.isHovered())
{
_stroke(0,0,0)
_strokeWeight(4)
_noFill()
_rect(dx - this.textWidth()/2,dy - this.textHeight()/2, this.textWidth(),this.textHeight())
}
}
}
_noStroke()
_fill(255)
if (this.color == "default" || this.color == "highlighter")
_fill(0)
_strokeWeight(1)
_textAlign(LEFT)
let [mainText, subText] = this.getMainTextAndSubText()
_textSize(FontSize)
let w1 = _textWidth(mainText)
_textSize(SubFontSize)
let w2 = _textWidth(subText)
_textSize(FontSize)
_text(mainText, dx-w1/2-w2/2, dy + 6)
_textSize(SubFontSize)
_text(subText, dx+w1/2-w2/2, dy + 10)
let i = 0
while (i < this.arrows.length)
{
if (this.arrows[i].from === this)// && this.arrows[i].to && !this.arrows[i].to.dead)
this.arrows[i].draw(xoff,yoff)
else
this.arrows.splice(i,1)
i += 1
}
}
getMainTextAndSubText() {
let subText = ""
let mainText = ""
let sub = false
let lastChar = ""
for (let i=0; i<this.text.length; i++) {
let char = this.text[i]
if (sub) {
subText += char
} else {
mainText += char
}
if (char == "_" && lastChar == "_" && i < this.text.length-1) {
sub = true
mainText = mainText.substring(0, mainText.length-2)
}
lastChar = char
}
return [mainText, subText]
}
takePicture()
{
let pic = createGraphics(this.width, this.totalHeight() + this.textHeight())
SetCurrentRenderTarget(pic)
this.draw(true, this.width/2, this.textHeight()/2)
SetCurrentRenderTarget(null)
save(pic, "treeImage.png")
}
}