postDraw sample

This commit is contained in:
Emily 2019-08-22 12:17:16 +02:00
parent b7d2f1ab0e
commit b6237697c8
2 changed files with 16 additions and 5 deletions

View File

@ -47,14 +47,14 @@ class Graph {
}
draw() {
this.preDraw();
this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
this.preDraw(this);
this._draw();
this.postDraw();
this.postDraw(this);
}
_draw() {
this.ctx.clearRect(0, 0, this.canvas.width, this.canvas.height);
this.ctx.beginPath();
this.ctx.moveTo(0, 0);
@ -86,7 +86,7 @@ class Graph {
this.ctx.fill();
}
_dummyFunc() {}
_dummyFunc(_) {}
}
class MovingGraph extends Graph {

View File

@ -154,6 +154,8 @@
graph.smooth = true; // Can change on fly
graph.postDraw = postDraw;
let amount = Math.random() * graph.getLength() * 1.4;
for (let v = 0; v < amount; v++) {
graph.add( Math.random() * 100 );
@ -178,6 +180,15 @@
}
}
function postDraw(graph) {
graph.ctx.beginPath();
graph.ctx.moveTo(0, 100);
graph.ctx.lineTo(10000, 100);
graph.ctx.stroke();
}
function callbackData(data) {
console.log(data);
}