postDraw sample

2019-08-22 12:17:16 +02:00
parent b7d2f1ab0e
commit b6237697c8
2 changed files with 16 additions and 5 deletions
--- a/www/js/graph.js
+++ b/www/js/graph.js
@@ -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 {