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I have a problem that I can't solve. I want to use JointJS fromJSON function to reconstruct the flowchart from a JSON (previously exported using JoinJS's toJSON function.
The problem is that the call to the fromJSON function always returns the following error:
Whether I call it inside the hook mounted () or call it from the click of a button.
For completeness I also want to say that I am using Vue.js.
The code I'm using instead is the following:
<template>
<div class="wrapper">
<button v-on:click="getGraphJSON">Get graph JSON</button>
<button v-on:click="resetGraphJSON">Restore graph from JSON</button>
<div id="myholder"></div>
</div>
</template>
<script>
const _ = require('lodash')
const joint = require('jointjs')
const g = require('../../node_modules/jointjs/dist/geometry.js')
const backbone = require('../../node_modules/backbone/backbone.js')
const $ = require('../../node_modules/jquery/dist/jquery.js')
import '../../node_modules/jointjs/dist/joint.css';
var CustomRectangle = joint.shapes.standard.Rectangle.define('CustomRectangle', {
type: 'CustomRectangle',
attrs: {
body: {
rx: 10, // add a corner radius
ry: 10,
strokeWidth: 1,
fill: 'cornflowerblue'
},
label: {
textAnchor: 'left', // align text to left
refX: 10, // offset text from right edge of model bbox
fill: 'white',
fontSize: 18
}
}
}, {
markup: [{
tagName: 'rect',
selector: 'body',
}, {
tagName: 'text',
selector: 'label'
}]
}, {
createRandom: function() {
var rectangle = new this();
var fill = '#' + ('000000' + Math.floor(Math.random() * 16777215).toString(16)).slice(-6);
var stroke = '#' + ('000000' + Math.floor(Math.random() * 16777215).toString(16)).slice(-6);
var strokeWidth = Math.floor(Math.random() * 6);
var strokeDasharray = Math.floor(Math.random() * 6) + ' ' + Math.floor(Math.random() * 6);
var radius = Math.floor(Math.random() * 21);
rectangle.attr({
body: {
fill: fill,
stroke: stroke,
strokeWidth: strokeWidth,
strokeDasharray: strokeDasharray,
rx: radius,
ry: radius
},
label: { // ensure visibility on dark backgrounds
fill: 'black',
stroke: 'white',
strokeWidth: 1,
fontWeight: 'bold'
}
});
return rectangle;
}
});
export default {
name: 'JointChartRestorable',
data() {
return {
graph: null,
paper: null,
// graphJSON: JSON.parse('{"cells":[{"type":"standard.Rectangle","position":{"x":100,"y":30},"size":{"width":100,"height":40},"angle":0,"id":"049776c9-7b6d-4aaa-8b02-1edc3bea9852","z":1,"attrs":{"body":{"fill":"blue"},"label":{"fill":"white","text":"Rect #1"}}},{"type":"standard.Rectangle","position":{"x":400,"y":30},"size":{"width":100,"height":40},"angle":0,"id":"b6e77973-1195-4749-99e1-728549329b11","z":2,"attrs":{"body":{"fill":"#2C3E50","rx":5,"ry":5},"label":{"fontSize":18,"fill":"#3498DB","text":"Rect #2","fontWeight":"bold","fontVariant":"small-caps"}}},{"type":"standard.Link","source":{"id":"049776c9-7b6d-4aaa-8b02-1edc3bea9852"},"target":{"id":"b6e77973-1195-4749-99e1-728549329b11"},"id":"4ed8e3b3-55de-4ad2-b79e-d4848adc4a58","labels":[{"attrs":{"text":{"text":"Hello, World!"}}}],"z":3,"attrs":{"line":{"stroke":"blue","strokeWidth":1,"targetMarker":{"d":"M 10 -5 0 0 10 5 Z","stroke":"black","fill":"yellow"},"sourceMarker":{"type":"path","stroke":"black","fill":"red","d":"M 10 -5 0 0 10 5 Z"}}}}],"graphCustomProperty":true,"graphExportTime":1563951791966}')
// graphJSON: JSON.parse('{"cells":[{"type":"examples.CustomRectangle","position":{"x":90,"y":30},"size":{"width":100,"height":40},"angle":0,"id":"faa7f957-4691-4bb2-b907-b2054f7e07de","z":1,"attrs":{"body":{"fill":"blue"},"label":{"text":"Rect #1"}}}]}')
graphJSON: JSON.parse('{"cells":[{"type":"CustomRectangle","position":{"x":100,"y":30},"size":{"width":100,"height":40},"angle":0,"id":"f02da591-c03c-479f-88cf-55c291064ca8","z":1,"attrs":{"body":{"fill":"blue"},"label":{"text":"Rect #1"}}}]}')
};
},
methods: {
getGraphJSON: function() {
this.graphJSON = this.graph.toJSON();
console.log(JSON.stringify(this.graphJSON));
this.graph.get('graphCustomProperty'); // true
this.graph.get('graphExportTime');
},
resetGraphJSON: function() {
if(this.graphJSON !== undefined && this.graphJSON !== null && this.graphJSON !== '') {
this.graph.fromJSON(this.graphJSON);
// this.paper.model.set(this.graphJSON);
} else {
alert('Devi prima cliccare sul tasto "Get graph JSON" almeno una volta');
}
}
},
mounted() {
this.graph = new joint.dia.Graph();
this.graph.fromJSON(this.graphJSON);
// this.graph.set('graphCustomProperty', true);
// this.graph.set('graphExportTime', Date.now());
this.paper = new joint.dia.Paper({
el: document.getElementById('myholder'),
model: this.graph,
width: '100%',
height: 600,
gridSize: 10,
drawGrid: true,
background: {
color: 'rgba(0, 255, 0, 0.3)'
},
// interactive: false, // disable default interaction (e.g. dragging)
/*elementView: joint.dia.ElementView.extend({
pointerdblclick: function(evt, x, y) {
joint.dia.CellView.prototype.pointerdblclick.apply(this, arguments);
this.notify('element:pointerdblclick', evt, x, y);
this.model.remove();
}
}),
linkView: joint.dia.LinkView.extend({
pointerdblclick: function(evt, x, y) {
joint.dia.CellView.prototype.pointerdblclick.apply(this, arguments);
this.notify('link:pointerdblclick', evt, x, y);
this.model.remove();
}
})*/
});
/*this.paper.on('cell:pointerdblclick', function(cellView) {
var isElement = cellView.model.isElement();
var message = (isElement ? 'Element' : 'Link') + ' removed';
eventOutputLink.attr('label/text', message);
eventOutputLink.attr('body/visibility', 'visible');
eventOutputLink.attr('label/visibility', 'visible');
});*/
/***************************************************/
/************** GRAPH ELEMENT SAMPLE ***************/
/***************************************************/
// var rect = new joint.shapes.standard.Rectangle();
// var rect = new CustomRectangle();
// rect.position(100, 30);
// rect.resize(100, 40);
// rect.attr({
// body: {
// fill: 'blue'
// },
// label: {
// text: 'Rect #1',
// fill: 'white'
// }
// });
// rect.addTo(this.graph);
/***************************************************/
/************** GRAPH ELEMENT SAMPLE ***************/
/***************************************************/
}
}
</script>
Right now I'm using a custom element, previously defined, but I've also done tests using the standard Rectangle element of JointJS.
Can anyone tell me if I'm doing something wrong?
Many thanks in advance.
Markup object could not be found in element that's reason why this error is getting. After it's imported jointjs to the vueJS project through jointjs or rabbit dependency;
import * as joint from 'jointjs' or import * as joint from 'rabbit'
window.joint = joint;
joint should be adjusted as global in environment by using window.
I have a html canvas that I draw a rect on, when I clear the canvas the screen clears but when you move the mouse the rect reappears. I stretch the rect vertically. Here is a code pen example of what is happening, you have to double click on the canvas for the rect to appear. https://codepen.io/tjquinn/pen/BYZQqo
HTML
<div id="app">
<div class="cv">
<canvas v-on:mousedown="mouseDown" v-on:mousemove="mouseMove" v-on:mouseup="mouseUp" #dblclick="dclick" id="rect" class="rect" width="150" height="700"></canvas>
<button v-on:click="clear">
Clear
</button>
</div>
</div>
JS
methods: {
checkCloseEnough: function (p1, p2) {
return Math.abs(p1 - p2) < this.closeEnough;
},
getVal: function (x) {
this.canvas2 = document.getElementById('rect');
this.ctx2 = this.canvas2.getContext('2d');
this.st = this.canvas2.height;
this.ic = (this.st / x);
},
draw: function () {
this.ctx2.fillStyle = "#222222";
this.ctx2.fillRect(this.ctx2.rect.startX, this.ctx2.rect.startY, this.ctx2.rect.w, this.ctx2.rect.h);
this.drawHandles();
},
drawHandles: function () {
this.drawCircle(this.ctx2.rect.startX + this.ctx2.rect.w/2, this.ctx2.rect.startY, this.closeEnough); //top left corner
//drawCircle(rect.startX + rect.w, rect.startY, closeEnough);
//drawCircle(rect.startX + rect.w, rect.startY + rect.h, closeEnough);
this.drawCircle(this.ctx2.rect.startX + this.ctx2.rect.w/2, this.ctx2.rect.startY + this.ctx2.rect.h, this.closeEnough);
},
drawCircle: function (x, y, radius) {
this.ctx2.fillStyle = "#FF0000";
this.ctx2.beginPath();
this.ctx2.arc(x, y, radius, 0, 2 * Math.PI);
this.ctx2.closePath();
this.ctx2.fill();
},
checkCloseEnough: function (p1, p2) {
return Math.abs(p1 - p2) < this.closeEnough;
},
mouseDown: function (event) {
this.mouseX = event.pageX - this.canvas2.offsetLeft;
this.mouseY = event.pageY - this.canvas2.offsetTop;
// if there isn't a rect yet
if (this.ctx2.rect.w === undefined) {
this.ctx2.rect.startX = this.mouseY;
this.ctx2.rect.startY = this.mouseX;
this.dragBR = true;
}
if (this.checkCloseEnough(this.mouseX, this.ctx2.rect.startX + this.ctx2.rect.w/2) && this.checkCloseEnough(this.mouseY, this.ctx2.rect.startY)) {
this.dragTL = true;
}
else if (this.checkCloseEnough(this.mouseX, this.ctx2.rect.startX + this.ctx2.rect.w/2) && this.checkCloseEnough(this.mouseY, this.ctx2.rect.startY + this.ctx2.rect.h)) {
this.dragBR = true;
}
else {
// handle not resizing
}
this.ctx2.clearRect(0, 0, this.canvas2.width, this.canvas2.height);
this.draw();
},
mouseMove: function (event) {
this.mouseX = event.pageX - this.canvas2.offsetLeft;
this.mouseY = event.pageY - this.canvas2.offsetTop;
if (this.dragTL) {
//rect.w += rect.startX - mouseX;
this.ctx2.rect.h += this.ctx2.rect.startY - this.mouseY;
//rect.startX = mouseX;
this.ctx2.rect.startY = this.mouseY;
}
else if (this.dragBR) {
//rect.w = Math.abs(rect.startX - mouseX);
this.ctx2.rect.h = Math.abs(this.ctx2.rect.startY - this.mouseY);
}
this.ctx2.clearRect(0, 0, this.canvas2.width, this.canvas2.height);
this.draw();
},
mouseUp: function () {
this.dragTL = false;
this.dragTR = false;
this.dragBL = false;
this.dragBR = false;
},
dclick: function (e) {
console.log("Fires");
e.preventDefault();
this.ctx2.rect = {
startX: 25,
startY: 100,
w: (this.canvas2.width - 50),
h: 300,
}
this.draw();
this. ln = this.lines;
this.getVal(10);
},
clear: function () {
this.cv2 = 'rect';
this.canvas2 = document.getElementById(this.cv2);
this.ctx2 = this.canvas2.getContext('2d');
console.log(this.ctx2.clearRect(0, 0, this.canvas2.width, this.canvas2.height));
console.log("Clear should run");
},
}
})
It turns out the error was in my logic that was pointed out by Kamal Singh, I needed to add clear flags to my methods so that they do not run if the screen has been cleared.
<html>
<head>
<title>Test</title>
<script src="vue.min.js"></script>
</head>
<body>
<div id="app">
<div class="cv">
<canvas style='border:1px solid;' v-on:mousedown="mouseDown" v-on:mousemove="mouseMove" v-on:mouseup="mouseUp" #dblclick="dclick" id="rect" class="rect" width="150" height="700"></canvas>
<button v-on:click="clear">
Clear
</button>
</div>
</div>
<script>
new Vue({
el: '#app',
data: function() {
return {
rect : {},
drag : false,
closeEnough : 10,
st : 0,
ic : 0,
mouseX : 0,
mouseY : 0,
dragTL : false,
dragBL : false,
dragTR : false,
dragBR : false,
cv2: '',
ln: 0,
cleared: true
}
},
mounted: function () {
this.getVal(10);
this.draw();
},
methods: {
checkCloseEnough: function (p1, p2) {
return Math.abs(p1 - p2) < this.closeEnough;
},
getVal: function (x) {
this.canvas2 = document.getElementById('rect');
this.ctx2 = this.canvas2.getContext('2d');
this.st = this.canvas2.height;
this.ic = (this.st / x);
},
draw: function () {
this.ctx2.fillStyle = "#222222";
this.ctx2.fillRect(this.ctx2.rect.startX, this.ctx2.rect.startY, this.ctx2.rect.w, this.ctx2.rect.h);
this.drawHandles();
},
drawHandles: function () {
this.drawCircle(this.ctx2.rect.startX + this.ctx2.rect.w/2, this.ctx2.rect.startY, this.closeEnough); //top left corner
//drawCircle(rect.startX + rect.w, rect.startY, closeEnough);
//drawCircle(rect.startX + rect.w, rect.startY + rect.h, closeEnough);
this.drawCircle(this.ctx2.rect.startX + this.ctx2.rect.w/2, this.ctx2.rect.startY + this.ctx2.rect.h, this.closeEnough);
},
drawCircle: function (x, y, radius) {
this.ctx2.fillStyle = "#FF0000";
this.ctx2.beginPath();
this.ctx2.arc(x, y, radius, 0, 2 * Math.PI);
this.ctx2.closePath();
this.ctx2.fill();
},
checkCloseEnough: function (p1, p2) {
return Math.abs(p1 - p2) < this.closeEnough;
},
mouseDown: function (event) {
if(this.cleared) return;
this.mouseX = event.pageX - this.canvas2.offsetLeft;
this.mouseY = event.pageY - this.canvas2.offsetTop;
// if there isn't a rect yet
if (this.ctx2.rect.w === undefined) {
this.ctx2.rect.startX = this.mouseY;
this.ctx2.rect.startY = this.mouseX;
this.dragBR = true;
}
if (this.checkCloseEnough(this.mouseX, this.ctx2.rect.startX + this.ctx2.rect.w/2) && this.checkCloseEnough(this.mouseY, this.ctx2.rect.startY)) {
this.dragTL = true;
}
else if (this.checkCloseEnough(this.mouseX, this.ctx2.rect.startX + this.ctx2.rect.w/2) && this.checkCloseEnough(this.mouseY, this.ctx2.rect.startY + this.ctx2.rect.h)) {
this.dragBR = true;
}
else {
// handle not resizing
}
I need some help with my code. I want to make the str sprite invisible after 10 seconds.
I'm using this link for help: http://phaser.io/examples/v2/time/basic-timed-event
var game = new Phaser.Game(500, 550, Phaser.AUTO);
//var picture;
var Pacman = function (game) {
this.map = null;
this.layer = null;
this.pacman = null;
this.safetile = 14;
this.gridsize = 16;
this.speed = 100;
this.threshold = 3;
this.turnSpeed = 200;
this.marker = new Phaser.Point();
this.turnPoint = new Phaser.Point();
this.directions = [ null, null, null, null, null ];
this.opposites = [ Phaser.NONE, Phaser.RIGHT, Phaser.LEFT, Phaser.DOWN, Phaser.UP ];
this.current = Phaser.NONE;
this.turning = Phaser.NONE;
this.score=0;
this.scoreText='';
this.bonus=0;
this.bonusText='';
};
Pacman.prototype = {
init: function () {
this.scale.scaleMode = Phaser.ScaleManager.SHOW_ALL;
this.scale.pageAlignHorizontally = true;
this.scale.pageAlignVertically = true;
Phaser.Canvas.setImageRenderingCrisp(this.game.canvas);
this.physics.startSystem(Phaser.Physics.ARCADE);
},
preload: function () {
// We need this because the assets are on github pages
// Remove the next 2 lines if running locally
this.load.baseURL = 'https://nikosdaskalos.github.io/pacman/';
this.load.crossOrigin = 'anonymous';
this.load.image('str', 'assets/str.png');
this.load.image('dot', 'assets/dot.jpg');
this.load.image('coin', 'assets/coin.jpg');
this.load.image('tiles', 'assets/pacman-tiles.png');
this.load.spritesheet('pacman', 'assets/pacman.png');
this.load.tilemap('map', 'assets/pacman-map.json', null, Phaser.Tilemap.TILED_JSON);
// Needless to say, graphics (C)opyright Namco
},
create: function () {
this.map = this.add.tilemap('map');
this.map.addTilesetImage('pacman-tiles', 'tiles');
this.layer = this.map.createLayer('Pacman');
//picture = game.add.sprite(game.world.centerX, game.world.centerY, 'str');
//picture.anchor.setTo(0.5, 0.5);
//game.time.events.add(Phaser.Timer.SECOND * 4, fadePicture, this);
this.dots = this.add.physicsGroup();
this.map.createFromTiles(36, this.safetile, 'str', this.layer, this.dots);
this.map.createFromTiles(7, this.safetile, 'dot', this.layer, this.dots);
this.map.createFromTiles(35, this.safetile, 'coin', this.layer, this.dots);
// The dots will need to be offset by 6px to put them back in the middle of the grid
this.dots.setAll('x', 6, false, false, 1);
this.dots.setAll('y', 6, false, false, 1);
// Pacman should collide with everything except the safe tile
this.map.setCollisionByExclusion([this.safetile], true, this.layer);
// Position Pacman at grid location 14x17 (the +8 accounts for his anchor)
this.pacman = this.add.sprite((14 * 16) + 8, (17 * 16) + 8, 'pacman', 0);
this.pacman.anchor.set(0.5);
//this.pacman.animations.add('munch', [0, 1, 2, 1], 20, true);
this.physics.arcade.enable(this.pacman);
this.pacman.body.setSize(16, 16, 0, 0);
this.cursors = this.input.keyboard.createCursorKeys();
//this.pacman.play('munch');
this.move(Phaser.LEFT);
this.scoreText = game.add.text(0, 500, 'Score: 0', { fontSize: '34px Arial', fill: 'white' });
lives = game.add.group();
game.add.text(game.world.width - 340, 500, 'Lives : ', { fontSize: '34px Arial', fill: 'white' });
this.bonusText = game.add.text(360, 500, 'Bonus: 0', { fontSize: '20px Arial', fill: 'white' });
for (var i = 0; i < 3; i++)
{
var pacman = lives.create(game.world.width - 235 + (30 * i), 517, 'pacman');
pacman.anchor.setTo(0.5, 0.5);
pacman.angle = 90;
pacman.alpha = 0.4;
}
},
//function fadePicture() {
//game.add.tween(picture).to( { alpha: 0 }, 2000, Phaser.Easing.Linear.None, true);
//},
checkKeys: function () {
if (this.cursors.left.isDown && this.current !== Phaser.LEFT)
{
this.checkDirection(Phaser.LEFT);
}
else if (this.cursors.right.isDown && this.current !== Phaser.RIGHT)
{
this.checkDirection(Phaser.RIGHT);
}
else if (this.cursors.up.isDown && this.current !== Phaser.UP)
{
this.checkDirection(Phaser.UP);
}
else if (this.cursors.down.isDown && this.current !== Phaser.DOWN)
{
this.checkDirection(Phaser.DOWN);
}
else
{
// This forces them to hold the key down to turn the corner
this.turning = Phaser.NONE;
}
},
checkDirection: function (turnTo) {
if (this.turning === turnTo || this.directions[turnTo] === null || this.directions[turnTo].index !== this.safetile)
{
// Invalid direction if they're already set to turn that way
// Or there is no tile there, or the tile isn't index 1 (a floor tile)
return;
}
// Check if they want to turn around and can
if (this.current === this.opposites[turnTo])
{
this.move(turnTo);
}
else
{
this.turning = turnTo;
this.turnPoint.x = (this.marker.x * this.gridsize) + (this.gridsize / 2);
this.turnPoint.y = (this.marker.y * this.gridsize) + (this.gridsize / 2);
}
},
turn: function () {
var cx = Math.floor(this.pacman.x);
var cy = Math.floor(this.pacman.y);
// This needs a threshold, because at high speeds you can't turn because the coordinates skip past
if (!this.math.fuzzyEqual(cx, this.turnPoint.x, this.threshold) || !this.math.fuzzyEqual(cy, this.turnPoint.y, this.threshold))
{
return false;
}
// Grid align before turning
this.pacman.x = this.turnPoint.x;
this.pacman.y = this.turnPoint.y;
this.pacman.body.reset(this.turnPoint.x, this.turnPoint.y);
this.move(this.turning);
this.turning = Phaser.NONE;
return true;
},
move: function (direction) {
var speed = this.speed;
if (direction === Phaser.LEFT || direction === Phaser.UP)
{
speed = -speed;
}
if (direction === Phaser.LEFT || direction === Phaser.RIGHT)
{
this.pacman.body.velocity.x = speed;
}
else
{
this.pacman.body.velocity.y = speed;
}
// Reset the scale and angle (Pacman is facing to the right in the sprite sheet)
/* this.pacman.scale.x = 1;
this.pacman.angle = 0;
if (direction === Phaser.LEFT)
{
this.pacman.scale.x = -1;
}
else if (direction === Phaser.UP)
{
this.pacman.angle = 270;
}
else if (direction === Phaser.DOWN)
{
this.pacman.angle = 90;
}
this.current = direction;
},*/
this.add.tween(this.pacman).to( { angle: this.getAngle(direction) }, this.turnSpeed, "Linear", true);
this.current = direction;
},
getAngle: function (to) {
// About-face?
if (this.current === this.opposites[to])
{
return "180";
}
if ((this.current === Phaser.UP && to === Phaser.LEFT) ||
(this.current === Phaser.DOWN && to === Phaser.RIGHT) ||
(this.current === Phaser.LEFT && to === Phaser.DOWN) ||
(this.current === Phaser.RIGHT && to === Phaser.UP))
{
return "-90";
}
return "90";
},
eatDot: function (pacman, dot) {
dot.kill();
var audio = new Audio('assets/pacman_chomp.wav');
audio.play()
this.score+=10;
this.scoreText.text= 'Score: ' + this.score;
//setTimeout(audio.play(),2000);
if (this.dots.total === 0)
{
this.dots.callAll('revive');
}
},
/*function muteAudio() {
var audio = document.getElementById('audioPlayer');
if (audio.mute = false) {
document.getElementById('audioPlayer').muted = true;
}
else {
audio.mute = true
document.getElementById('audioPlayer').muted = false;
}
}*/
eatCoin: function(pacman,coin){//pente
coin.kill();
this.score+=20;
this.scoreText.text= 'Score: ' + this.score;
var audio = new Audio('assets/pacman_eatfruit.wav');
audio.play()
if(this.coins.total===0)
{
this.coins.callAll('revive');
}
},
eatStr: function(pacman,str){//pente
str.kill();
this.bonus+=100;
this.bonusText.text= 'Bonus: ' + this.bonus;
var audio = new Audio('assets/pacman_eatfruit.wav');
audio.play()
if(this.strs.total===0)
{
this.strs.callAll('revive');
}
},
update: function () {
this.physics.arcade.collide(this.pacman, this.layer);
this.physics.arcade.overlap(this.pacman, this.dots, this.eatDot, null, this);
this.physics.arcade.overlap(this.pacman, this.dots, this.eatCoin, null, this);
this.physics.arcade.overlap(this.pacman, this.dots, this.eatStr, null, this);
this.marker.x = this.math.snapToFloor(Math.floor(this.pacman.x), this.gridsize) / this.gridsize;
this.marker.y = this.math.snapToFloor(Math.floor(this.pacman.y), this.gridsize) / this.gridsize;
// Update our grid sensors
this.directions[1] = this.map.getTileLeft(this.layer.index, this.marker.x, this.marker.y);
this.directions[2] = this.map.getTileRight(this.layer.index, this.marker.x, this.marker.y);
this.directions[3] = this.map.getTileAbove(this.layer.index, this.marker.x, this.marker.y);
this.directions[4] = this.map.getTileBelow(this.layer.index, this.marker.x, this.marker.y);
this.checkKeys();
if (this.turning !== Phaser.NONE)
{
this.turn();
}
}
};
game.state.add('Game', Pacman, true);
</script>
</body>
</html>
So, can anyone help me with making the str invisible after 10 seconds?
You were pretty close.
I'm going to use pacman as an example, since I'm not 100% sure how you were going to fade out the coins. When Pacman eats them?
First, you want the following fadePicture function:
fadePicture: function() {
game.add.tween(this.pacman).to( { alpha: 0 }, 2000, Phaser.Easing.Linear.None, true);
},
Note how that was changed from function fadePicture().
Next, in your create function you can refer to it:
this.game.time.events.add(Phaser.Timer.SECOND * 4, this.fadePicture, this);
That replaces the following:
//game.time.events.add(Phaser.Timer.SECOND * 4, fadePicture, this);
I've created a JSFiddle with the relevant changes.
If you do want your coins to fade then I would try updating fadePicture to accept a dot/str parameter and then game.add.tween on that.
I have a requirement to render a set of time series data of contiguous blocks.
I need to describe a series of bars which could span many hours, or just minutes, with their own Y value.
I'm not sure if ChartJS is what I should be using for this, but I have looked at extending the Bar type, but it seems very hard coded for each bar to be the same width. The Scale Class internally is used for labels, chart width etc, not just the bars themselves.
I am trying to achieve something like this that works in Excel: http://peltiertech.com/variable-width-column-charts/
Has anyone else had to come up with something similar?
I found I needed to do this and the answer by #potatopeelings was great, but out of date for version 2 of Chartjs. I did something similar by creating my own controller/chart type via extending bar:
//controller.barw.js
module.exports = function(Chart) {
var helpers = Chart.helpers;
Chart.defaults.barw = {
hover: {
mode: 'label'
},
scales: {
xAxes: [{
type: 'category',
// Specific to Bar Controller
categoryPercentage: 0.8,
barPercentage: 0.9,
// grid line settings
gridLines: {
offsetGridLines: true
}
}],
yAxes: [{
type: 'linear'
}]
}
};
Chart.controllers.barw = Chart.controllers.bar.extend({
/**
* #private
*/
getRuler: function() {
var me = this;
var scale = me.getIndexScale();
var options = scale.options;
var stackCount = me.getStackCount();
var fullSize = scale.isHorizontal()? scale.width : scale.height;
var tickSize = fullSize / scale.ticks.length;
var categorySize = tickSize * options.categoryPercentage;
var fullBarSize = categorySize / stackCount;
var barSize = fullBarSize * options.barPercentage;
barSize = Math.min(
helpers.getValueOrDefault(options.barThickness, barSize),
helpers.getValueOrDefault(options.maxBarThickness, Infinity));
return {
fullSize: fullSize,
stackCount: stackCount,
tickSize: tickSize,
categorySize: categorySize,
categorySpacing: tickSize - categorySize,
fullBarSize: fullBarSize,
barSize: barSize,
barSpacing: fullBarSize - barSize,
scale: scale
};
},
/**
* #private
*/
calculateBarIndexPixels: function(datasetIndex, index, ruler) {
var me = this;
var scale = ruler.scale;
var options = scale.options;
var isCombo = me.chart.isCombo;
var stackIndex = me.getStackIndex(datasetIndex);
var base = scale.getPixelForValue(null, index, datasetIndex, isCombo);
var size = ruler.barSize;
var dataset = me.chart.data.datasets[datasetIndex];
if(dataset.weights) {
var total = dataset.weights.reduce((m, x) => m + x, 0);
var perc = dataset.weights[index] / total;
var offset = 0;
for(var i = 0; i < index; i++) {
offset += dataset.weights[i] / total;
}
var pixelOffset = Math.round(ruler.fullSize * offset);
var base = scale.isHorizontal() ? scale.left : scale.top;
base += pixelOffset;
size = Math.round(ruler.fullSize * perc);
size -= ruler.categorySpacing;
size -= ruler.barSpacing;
}
base -= isCombo? ruler.tickSize / 2 : 0;
base += ruler.fullBarSize * stackIndex;
base += ruler.categorySpacing / 2;
base += ruler.barSpacing / 2;
return {
size: size,
base: base,
head: base + size,
center: base + size / 2
};
},
});
};
Then you need to add it to your chartjs instance like this:
import Chart from 'chart.js'
import barw from 'controller.barw'
barw(Chart); //add plugin to chartjs
and finally, similar to the other answer, the weights of the bar widths need to be added to the data set:
var data = {
labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G'],
datasets: [
{
label: "My First dataset",
fillColor: "rgba(220,220,220,0.5)",
strokeColor: "rgba(220,220,220,0.8)",
highlightFill: "rgba(220,220,220,0.7)",
highlightStroke: "rgba(220,220,220,1)",
data: [65, 59, 80, 30, 56, 65, 40],
weights: [1, 0.9, 1, 2, 1, 4, 0.3]
},
]
};
This will hopefully get someone onto the right track. What I have certainly isn't perfect, but if you make sure you have the right number of weight to data points, you should be right.
Best of luck.
This is based on the #Shane's code, I just posted to help, since is a common question.
calculateBarIndexPixels: function (datasetIndex, index, ruler) {
const options = ruler.scale.options;
const range = options.barThickness === 'flex' ? computeFlexCategoryTraits(index, ruler, options) : computeFitCategoryTraits(index, ruler, options);
const barSize = range.chunk;
const stackIndex = this.getStackIndex(datasetIndex, this.getMeta().stack);
let center = range.start + range.chunk * stackIndex + range.chunk / 2;
let size = range.chunk * range.ratio;
let start = range.start;
const dataset = this.chart.data.datasets[datasetIndex];
if (dataset.weights) {
//the max weight should be one
size = barSize * dataset.weights[index];
const meta = this.chart.controller.getDatasetMeta(0);
const lastModel = index > 0 ? meta.data[index - 1]._model : null;
//last column takes the full bar
if (lastModel) {
//start could be last center plus half of last column width
start = lastModel.x + lastModel.width / 2;
}
center = start + size * stackIndex + size / 2;
}
return {
size: size,
base: center - size / 2,
head: center + size / 2,
center: center
};
}
For Chart.js you can create a new extension based on the bar class to do this. It's a bit involved though - however most of it is a copy paste of the bar type library code
Chart.types.Bar.extend({
name: "BarAlt",
// all blocks that don't have a comment are a direct copy paste of the Chart.js library code
initialize: function (data) {
// the sum of all widths
var widthSum = data.datasets[0].data2.reduce(function (a, b) { return a + b }, 0);
// cumulative sum of all preceding widths
var cumulativeSum = [ 0 ];
data.datasets[0].data2.forEach(function (e, i, arr) {
cumulativeSum.push(cumulativeSum[i] + e);
})
var options = this.options;
// completely rewrite this class to calculate the x position and bar width's based on data2
this.ScaleClass = Chart.Scale.extend({
offsetGridLines: true,
calculateBarX: function (barIndex) {
var xSpan = this.width - this.xScalePaddingLeft;
var x = this.xScalePaddingLeft + (cumulativeSum[barIndex] / widthSum * xSpan) - this.calculateBarWidth(barIndex) / 2;
return x + this.calculateBarWidth(barIndex);
},
calculateBarWidth: function (index) {
var xSpan = this.width - this.xScalePaddingLeft;
return (xSpan * data.datasets[0].data2[index] / widthSum);
}
});
this.datasets = [];
if (this.options.showTooltips) {
Chart.helpers.bindEvents(this, this.options.tooltipEvents, function (evt) {
var activeBars = (evt.type !== 'mouseout') ? this.getBarsAtEvent(evt) : [];
this.eachBars(function (bar) {
bar.restore(['fillColor', 'strokeColor']);
});
Chart.helpers.each(activeBars, function (activeBar) {
activeBar.fillColor = activeBar.highlightFill;
activeBar.strokeColor = activeBar.highlightStroke;
});
this.showTooltip(activeBars);
});
}
this.BarClass = Chart.Rectangle.extend({
strokeWidth: this.options.barStrokeWidth,
showStroke: this.options.barShowStroke,
ctx: this.chart.ctx
});
Chart.helpers.each(data.datasets, function (dataset, datasetIndex) {
var datasetObject = {
label: dataset.label || null,
fillColor: dataset.fillColor,
strokeColor: dataset.strokeColor,
bars: []
};
this.datasets.push(datasetObject);
Chart.helpers.each(dataset.data, function (dataPoint, index) {
datasetObject.bars.push(new this.BarClass({
value: dataPoint,
label: data.labels[index],
datasetLabel: dataset.label,
strokeColor: dataset.strokeColor,
fillColor: dataset.fillColor,
highlightFill: dataset.highlightFill || dataset.fillColor,
highlightStroke: dataset.highlightStroke || dataset.strokeColor
}));
}, this);
}, this);
this.buildScale(data.labels);
// remove the labels - they won't be positioned correctly anyway
this.scale.xLabels.forEach(function (e, i, arr) {
arr[i] = '';
})
this.BarClass.prototype.base = this.scale.endPoint;
this.eachBars(function (bar, index, datasetIndex) {
// change the way the x and width functions are called
Chart.helpers.extend(bar, {
width: this.scale.calculateBarWidth(index),
x: this.scale.calculateBarX(index),
y: this.scale.endPoint
});
bar.save();
}, this);
this.render();
},
draw: function (ease) {
var easingDecimal = ease || 1;
this.clear();
var ctx = this.chart.ctx;
this.scale.draw(1);
Chart.helpers.each(this.datasets, function (dataset, datasetIndex) {
Chart.helpers.each(dataset.bars, function (bar, index) {
if (bar.hasValue()) {
bar.base = this.scale.endPoint;
// change the way the x and width functions are called
bar.transition({
x: this.scale.calculateBarX(index),
y: this.scale.calculateY(bar.value),
width: this.scale.calculateBarWidth(index)
}, easingDecimal).draw();
}
}, this);
}, this);
}
});
You pass in the widths like below
var data = {
labels: ['A', 'B', 'C', 'D', 'E', 'F', 'G'],
datasets: [
{
label: "My First dataset",
fillColor: "rgba(220,220,220,0.5)",
strokeColor: "rgba(220,220,220,0.8)",
highlightFill: "rgba(220,220,220,0.7)",
highlightStroke: "rgba(220,220,220,1)",
data: [65, 59, 80, 30, 56, 65, 40],
data2: [10, 20, 30, 20, 10, 40, 10]
},
]
};
and you call it like so
var ctx = document.getElementById('canvas').getContext('2d');
var myLineChart = new Chart(ctx).BarAlt(data);
Fiddle - http://jsfiddle.net/moye0cp4/
What's wrong with loading this JSON?
Select a new object, set its ID, add and save it. Trying to reload the JSON object results in an empty canvas.
http://jsfiddle.net/Sugv4/14/
function loadCanvas() {
canvas.clear();
window.alert(js);
canvas.loadFromDatalessJSON(js)
canvas.renderAll();
}
Try put this in Javascript code:
var canvas;
$(function () {
canvas = window._canvas = new fabric.Canvas('c');
fabric.Labeledrect = fabric.util.createClass(fabric.Rect, {
type: 'labeledRect',
initialize: function (options) {
options || (options = {});
this.callSuper('initialize', options);
this.set('label', options.label);
this.set('id', options.id);
},
toObject: function () {
return fabric.util.object.extend(this.callSuper('toObject'), {
label: this.get('label'),
id: this.get('id')
});
},
_render: function (ctx) {
this.callSuper('_render', ctx);
ctx.font = '10px Helvetica';
ctx.fillStyle = '#333';
ctx.fillText(this.label, -this.width / 2, -this.height / 2 + 10);
ctx.fillText(this.id, -this.width / 2, -this.height / 2 + 30);
}
});
fabric.Labeledrect.fromObject = function (object, callback) {
return new fabric.Labeledrect(object);
}
fabric.Labeledrect.async = true;
});
function voegObjectToe() {
var myObjects = document.getElementById("myObjects");
var kenmerk = myObjects.options[myObjects.selectedIndex].text;
//nieuw object
var rect = new fabric.Labeledrect({
left: canvas.width / 2,
top: canvas.height / 2
});
if (kenmerk == 'Camper') {
rect.set({
width: 80,
height: 50,
fill: '#faa',
label: 'Camper',
id: document.getElementById("myObject").value
});
} else if (kenmerk == 'Caravan') {
rect.set({
width: 80,
height: 60,
fill: '#3ac',
label: 'Caravan',
id: document.getElementById("myObject").value
});
} else if (kenmerk == 'Auto') {
rect.set({
width: 70,
height: 40,
fill: '#bbb',
label: 'Auto',
id: document.getElementById("myObject").value
});
} else if (kenmerk == "Boot") {
rect.set({
width: 150,
height: 60,
fill: '#8d1',
label: 'Boot',
id: document.getElementById("myObject").value
});
}
canvas.add(rect);
rect.set({
label: kenmerk + ' ' + rect.width * 7 + ' cm',
rx: 8,
ry: 8
});
canvas.renderAll();
}
function saveCanvas() {
js = JSON.stringify(canvas.toDatalessJSON());
}
function loadCanvas() {
//window.alert(js);
canvas.clear();
canvas.loadFromDatalessJSON(js);
canvas.renderAll();
}