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Backport petrinets.org code #4

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Backport petrinets.org code #4

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deef0a9
Backport code from https://github.com/PetriNets/petrinets.github.io
antonleviathan Aug 10, 2018
0a51af3
Update index rendering nets using new function
antonleviathan Aug 10, 2018
6ba58f0
Create examples folder and move example nets into it
antonleviathan Aug 10, 2018
75feeda
Closes #1 - move updateMarking from app.js to petrinet.js
antonleviathan Aug 10, 2018
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356 changes: 205 additions & 151 deletions app.js
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Original file line number Diff line number Diff line change
@@ -1,170 +1,224 @@
var r = 10
var w = 10
var h = 10

var svg = d3.select('body')
.append('svg')
.attr('width', '500px')
.attr('height', '250px')

// define arrow markers for graph links
svg.append('svg:defs').append('svg:marker')
.attr({
id: 'arrow',
viewBox: '0 -5 10 10',
refX: 3,
markerWidth: 7,
markerHeight: 7,
orient: 'auto'
})
.append('svg:path')
.attr({
d: 'M0,-5 L10,0 L0,5',
fill: 'black'
})
function drawNet_(container, states, transitions, marking, width, height) {
var r = 10;
var w = 10;
var h = 10;

var svg = d3
.select(container)
.append("svg")
.attr("width", width + "px")
.attr("height", height + "px");

// define arrow markers for graph links
svg
.append("svg:defs")
.append("svg:marker")
.attr({
id: "arrow",
viewBox: "0 -5 10 10",
refX: 3,
markerWidth: 7,
markerHeight: 7,
orient: "auto"
})
.append("svg:path")
.attr({
d: "M0,-5 L10,0 L0,5",
fill: "black"
});

var places = svg.append('g')

places.selectAll('circle')
.data(states)
.enter()
.append('circle')
.attr({
r: r,
fill: 'rgba(0,255,255,.2)',
stroke: 'black',
cx: function (d) { return d.x - 0.5 },
cy: function (d) { return d.y - 0.5 }
})
var places = svg.append("g");

// take a multiset dictionary 'label => multiplicity'
// and return a list of [{x, y, weight}]
function mapLocations (mset) {
return _.map(mset,
function (multiplicity, label) {
var s = _.find(states, 'label', label)
return {
x: s.x,
y: s.y,
weight: multiplicity
places
.selectAll("circle")
.data(states)
.enter()
.append("circle")
.attr({
r: r,
fill: "rgba(0,255,255,.2)",
stroke: "black",
cx: function(d) {
return d.x - 0.5;
},
cy: function(d) {
return d.y - 0.5;
}
}
)
}

// construct SVG line from arc
var arcPathToCenter = function (arc) {
return 'M ' + arc.x1 + ',' + arc.y1 + 'L ' + arc.x2 + ',' + arc.y2
});

// construct SVG line from arc
var arcPathToCenter = function(arc) {
return "M " + arc.x1 + "," + arc.y1 + "L " + arc.x2 + "," + arc.y2;
};

// construct SVG line from arc, trying to be smart about the shapes and length of arc
var arcPath = function(d) {
var deltaX = d.x2 - d.x1;
var deltaY = d.y2 - d.y1;
var dist = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
var normX = deltaX / dist;
var normY = deltaY / dist;

var sourcePadding = d.incoming ? 10 : 14;
var targetPadding = d.incoming ? 17 : 15;

var sourceX = -0.5 + d.x1 + sourcePadding * normX;
var sourceY = -0.5 + d.y1 + sourcePadding * normY;
var targetX = -0.5 + d.x2 - targetPadding * normX;
var targetY = -0.5 + d.y2 - targetPadding * normY;
return "M" + sourceX + "," + sourceY + "L" + targetX + "," + targetY;
};

var Arcs = svg.append("g");

Arcs.selectAll("path")
.data(arcs(transitions, states))
.enter()
.append("path")
.style("marker-end", "url(#arrow)")
.attr({
d: arcPath,
stroke: "black",
strokeWidth: 1
});

var transitionG = svg.append("g");

var tokensG = svg.append("g");

function redrawTransitions() {
var transitionSvg = transitionG.selectAll("rect").data(transitions);

// create or update
transitionSvg
.enter()
.append("rect")
.attr({
stroke: "black",
width: w * 2,
height: h * 2
})
.on("click", function(t) {
// transition the marking
// m_1 = m_0 - (pre t) + (post t)
updateMarking(t.pre, t.post, marking);
redraw();
});

// update new
transitionSvg.attr({
fill: function(d) {
return isEnabled(d.pre, marking) ? "rgba(0,0,255,.3)" : "rgba(0,0,0,.3)";
},
cursor: function(d) {
return isEnabled(d.pre, marking) ? "pointer" : "default";
},
x: function(d) {
return d.x - w - 0.5;
},
y: function(d) {
return d.y - h - 0.5;
}
});

// remove on exit
transitionSvg.exit().remove();
}

function redrawTokens() {
var tokenSvg = tokensG.selectAll("text").data(tokens(marking));

tokenSvg.enter().append("text");

tokenSvg
.attr({
visibility: function(d) {
return d.tokens === 0 ? "hidden" : "visible";
},
x: function(d) {
return _.find(states, "label", d.state).x - 0.5;
},
y: function(d) {
return _.find(states, "label", d.state).y - 0.5;
},
dx: -r / 2 + 0.5,
dy: r / 2 - 0.5
})
.text(function(d) {
return d.tokens;
});

tokenSvg.exit().remove();
}

function redraw() {
redrawTokens();
redrawTransitions();
}

redraw();
}

// construct SVG line from arc, trying to be smart about the shapes and length of arc
var arcPath = function (d) {
var deltaX = d.x2 - d.x1
var deltaY = d.y2 - d.y1
var dist = Math.sqrt(deltaX * deltaX + deltaY * deltaY)
var normX = deltaX / dist
var normY = deltaY / dist
var sourcePadding = (d.incoming ? 10 : 14)
var targetPadding = (d.incoming ? 17 : 15)
var sourceX = -0.5 + d.x1 + (sourcePadding * normX)
var sourceY = -0.5 + d.y1 + (sourcePadding * normY)
var targetX = -0.5 + d.x2 - (targetPadding * normX)
var targetY = -0.5 + d.y2 - (targetPadding * normY)
return 'M' + sourceX + ',' + sourceY + 'L' + targetX + ',' + targetY
}

var Arcs = svg.append('g')

Arcs.selectAll('path')
.data(arcs(transitions))
.enter()
.append('path')
.style('marker-end', 'url(#arrow)')
.attr({
d: arcPath,
stroke: 'black',
strokeWidth: 1
})
// compute the boundary and then translate states and transitions
function drawNet(container, states, transitions, marking){
const MAX = Number.MAX_VALUE
const MIN = Number.MIN_VALUE

var transitionG = svg.append('g')
// bounds[min_x, max_x, min_y, max_y)
var boundary = [MAX, MIN, MAX, MIN]
function updateBoundary(x, y) {
boundary[0] = Math.min(boundary[0], x)
boundary[1] = Math.max(boundary[1], x)
boundary[2] = Math.min(boundary[2], y)
boundary[3] = Math.max(boundary[3], y)
}

function tokens () {
return _.map(marking, function (val, key) {
return {
state: key,
tokens: val
}
_.forEach(states, function(el){
updateBoundary(el.x, el.y)
})
_.forEach(transitions, function(el){
updateBoundary(el.x, el.y)
})
}

var tokensG = svg.append('g')

function redrawTransitions () {
var transitionSvg = transitionG.selectAll('rect')
.data(transitions)
var width = Math.abs(boundary[1] - boundary[0])
var height = Math.abs(boundary[3] - boundary[2])

// create or update
transitionSvg.enter()
.append('rect')
.attr({
stroke: 'black',
width: w * 2,
height: h * 2
})
.on('click', function (t) {
// transition the marking
// m_1 = m_0 - (pre t) + (post t)
updateMarking(t.pre, t.post)
})
// find top left corner vector and subtract it from all points
var v = { x: boundary[0], y: boundary[2] }

// update new
transitionSvg.attr({
fill: function (d) {
return isEnabled(d.pre) ? 'rgba(0,0,255,.3)' : 'rgba(0,0,0,.3)'
},
cursor: function (d) {
return isEnabled(d.pre) ? 'pointer' : 'default'
},
x: function (d) { return d.x - w - 0.5 },
y: function (d) { return d.y - h - 0.5 }
})
radiusShift = 20
function translateData(data, radiusShift){
_.forEach(data, function(el){
el.x = el.x - v.x + radiusShift
el.y = el.y - v.y + radiusShift
});
return data
};

// remove on exit
transitionSvg.exit().remove()
}
var translatedStates = translateData(states, radiusShift)
var translatedTransitions = translateData(transitions, radiusShift)
var translatedMarking = translateData(marking, radiusShift)

function redrawTokens () {
var tokenSvg = tokensG
.selectAll('text')
.data(tokens())

tokenSvg.enter()
.append('text')

tokenSvg.attr({
visibility: function (d) {
return (d.tokens === 0) ? 'hidden' : 'visible'
},
x: function (d) {
return _.find(states, 'label', d.state).x - 0.5
},
y: function (d) {
return _.find(states, 'label', d.state).y - 0.5
},
dx: -r / 2 + 0.5,
dy: r / 2 - 0.5
})
.text(function (d) {
return d.tokens
})
var padding = 40
var computedHeight = height + padding
var computedWidth = width + padding

tokenSvg.exit()
.remove()
drawNet_(container, translatedStates, translatedTransitions, translatedMarking, computedWidth, computedHeight)
}

function redraw () {
redrawTokens()
redrawTransitions()
// make div with unique id to draw the net inside of
function insertNet(states, transitions, marking, scale) {
const id = 'ptnet-' + Math.floor(Math.random() * 100000000).toString()
document.write("<div id=\"" + id + "\"></div>")
scaleModel(transitions, states, scale, scale)
drawNet("#" + id, states, transitions, marking)
}

redraw()
// scale the petrinet
function scaleModel(transitions, states, sx, sy) {
states.concat(transitions).forEach(function(s) {
s.x *= sx;
s.y *= sy;
});
}
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