reduce dot scaling upon zoom (#963)

* remove obsolete code

* change point scaling with zoom distance

client/src/components/graph/drawPointsRegl.js

@@ -31,7 +31,7 @@ export default function(regl) {
       getFlags(flag, isNaN, isSelected, isHighlight);
 
       float size = pointSize(nPoints, minViewportDimension, isSelected, isHighlight);
-      gl_PointSize = size * pow(distance, 1.2);
+      gl_PointSize = size * pow(distance, 0.5);
 
       float z = isNaN ? zBottom : (isHighlight ? zTop : zMiddle);
       vec3 xy = projView * vec3(position, 1.);

client/src/components/graph/graph.js

@@ -194,11 +194,7 @@ class Graph extends React.Component {
 
   componentDidMount() {
     // setup canvas, webgl draw function and camera
-    const camera = _camera(this.reglCanvas, {
-      pan: true,
-      scale: true,
-      rotate: false
-    });
+    const camera = _camera(this.reglCanvas);
     const regl = _regl(this.reglCanvas);
     const drawPoints = _drawPoints(regl);