Update viewer.js

viewer.js

@@ -478,7 +478,7 @@ export function resetViewerCamera() {
  * Change the main model's diffuse color in real time.
  * r,g,b are floats [0,1]. This is a reusable function for new colors.
  */
-export function changeColor(dr, dg, db, er, eg, eb, boolTrans) {
+export function changeColor(dr, dg, db, er, eg, eb, op, boolTrans) {
   
   //cameraEntity.camera.clearColor = new pc.Color(colorBgR, colorBgG, colorBgB);
   
@@ -487,6 +487,7 @@ export function changeColor(dr, dg, db, er, eg, eb, boolTrans) {
 
     matTransparent.diffuse.set(dr, dg, db);
     matTransparent.emissive.set(er, eg, eb);
+    matTransparent.opacity = op;
     matTransparent.update();
 
     tubeTransparent.diffuse.set(dr, dg, db);