I have a problem when I go to paint the PIXI.Text in the cursor position.
This is the simple demo to reproduce the problem, when you go over the node with the cursor I paint the text, in this case, "@author vincenzopalazzo" but I want the position on the node, so I think for resolving the problem I have got the solution I must set the position of the mouse.
But I don't have an idea got get this position, so this is an example to reproduce the problem with PIXI
//setup Pixi renderer
var renderer = PIXI.autoDetectRenderer(600, 400, {
backgroundColor: 0x000000
});
document.body.appendChild(renderer.view);
// create new stage
var stage = new PIXI.Container();
// create helpful message
var style = {
font: '18px Courier, monospace',
fill: '#ffffff'
};
// create graphic object called circle then draw a circle on it
var circle = new PIXI.Graphics();
circle.lineStyle(5, 0xFFFFFF, 1);
circle.beginFill(0x0000FF, 1);
circle.drawCircle(150, 150, 100);
circle.endFill();
circle.alpha = 0.5;
stage.addChild(circle);
// designate circle as being interactive so it handles events
circle.interactive = true;
// create hit area, needed for interactivity
circle.hitArea = new PIXI.Circle(150, 150, 100);
// make circle non-transparent when mouse is over it
circle.mouseover = function(events) {
var message = new PIXI.Text('Hover your mouse over the circle to see the effect.', style);
message.x = events.clientX;
message.y = events.clientY;
circle.message = message;
circle.addChild(message);
}
// make circle half-transparent when mouse leaves
circle.mouseout = function(mouseData) {
this.alpha = 0.5;
circle.removeChild(circle.message);
delete circle.message;
}
// start animating
animate();
function animate() {
requestAnimationFrame(animate);
// render the root container
renderer.render(stage);
};<script src="https://cdnjs.cloudflare.com/ajax/libs/pixi.js/5.1.4/pixi.js"></script>This is my real code
module.exports = function (animatedNode, ctx) {
ctx.on('hover', function(animatedNode, ctx){
let x = animatedNode.pos.x;
let y = - animatedNode.pos.y / 2;
if(animatedNode.label === undefined){
animatedNode.label = new PIXI.Text('@author vincenzopalazzo', { fontFamily: "Arial", fontSize: "20px" , fill: 0x000000} );
animatedNode.label.x = x;
animatedNode.label.y = y + animatedNode.width/2;
ctx.addChild(animatedNode.label);
}else{
animatedNode.label.x = x;
animatedNode.label.y = y + animatedNode.width/2;
}
});
ctx.on('unhover', function(animatedNode, ctx){
ctx.removeChild(animatedNode.label);
delete animatedNode.label;
});
ctx.mouseover = function() {
console.debug('I\'call the hover events');
this.fire('hover', animatedNode, ctx);
}
ctx.mouseout = function() {
console.debug('I\'call the unhover events');
this.fire('unhover', animatedNode, ctx);
}
}
I'm using the ngraph.events on the ctx (it is the PIXI graphics) object, the method on and fire is the module nghraph.events
In your example code (first snippet) the "moseover" handler should be changed from:
// make circle non-transparent when mouse is over it
circle.mouseover = function(events) {
var message = new PIXI.Text('Hover your mouse over the circle to see the effect.', style);
message.x = events.clientX;
message.y = events.clientY;
circle.message = message;
circle.addChild(message);
}
to:
// make circle non-transparent when mouse is over it
circle.on('mouseover', function(event) {
// console.log('mouse is over the circle');
// console.log(event); // see in (for example in Chrome Devtools console) what is inside this variable
var message = new PIXI.Text('Hover your mouse over the circle to see the effect.', style);
// By looking at what "console.log(event)" shows we can see that instead of:
// message.x = events.clientX;
// message.y = events.clientY;
// should be:
message.x = event.data.global.x;
message.y = event.data.global.y;
circle.message = message;
circle.addChild(message);
});
To understand it more you can uncomment the "console.log" lines to observe it in your browser devtools console.
Then we also need to handle 'mouseover' event like this:
circle.on('mousemove',function (event) {
if (!circle.message) {
return;
}
var newPosition = event.data.getLocalPosition(this.parent);
circle.message.x = newPosition.x;
circle.message.y = newPosition.y;
});
so whole runnable example will be like this:
//setup Pixi renderer
var renderer = PIXI.autoDetectRenderer(600, 400, {
backgroundColor: 0x000000
});
document.body.appendChild(renderer.view);
// create new stage
var stage = new PIXI.Container();
// create helpful message
var style = {
font: '18px Courier, monospace',
fill: '#ffffff'
};
// create graphic object called circle then draw a circle on it
var circle = new PIXI.Graphics();
circle.lineStyle(5, 0xFFFFFF, 1);
circle.beginFill(0x0000FF, 1);
circle.drawCircle(150, 150, 100);
circle.endFill();
circle.alpha = 0.5;
stage.addChild(circle);
// designate circle as being interactive so it handles events
circle.interactive = true;
// create hit area, needed for interactivity
circle.hitArea = new PIXI.Circle(150, 150, 100);
// make circle non-transparent when mouse is over it
circle.on('mouseover', function(event) {
// console.log('mouse is over the circle');
// console.log(event); // see in (for example in Chrome Devtools console) what is inside this variable
var message = new PIXI.Text('Hover your mouse over the circle to see the effect.', style);
// By looking at what "console.log(event)" shows we can see that instead of:
// message.x = events.clientX;
// message.y = events.clientY;
// should be:
message.x = event.data.global.x;
message.y = event.data.global.y;
circle.message = message;
circle.addChild(message);
});
circle.on('mousemove',function (event) {
if (!circle.message) {
return;
}
var newPosition = event.data.getLocalPosition(this.parent);
circle.message.x = newPosition.x;
circle.message.y = newPosition.y;
});
// make circle half-transparent when mouse leaves
circle.mouseout = function(mouseData) {
this.alpha = 0.5;
circle.removeChild(circle.message);
delete circle.message;
}
// start animating
animate();
function animate() {
requestAnimationFrame(animate);
// render the root container
renderer.render(stage);
};<script src="https://cdnjs.cloudflare.com/ajax/libs/pixi.js/5.1.4/pixi.js"></script>Please also see: