Feat: make zoomManager.setScale() method to set the scale in direct accordance with the parameter passed to it.

[AlexDEVpro]

Expected Behavior

The setScale (1) method call must set the scale value to 1 so that the getScale () method call then returns 1.

Actual Behavior

Calling the setScale(1) method sets the scale value relative to the current value, and the initial value doesn't even equal 1 due to the inline change to scale in the render() method.

To set the scale to 1 now, you have to do this:

const actualTargetScale = 1;

const initialScale = this.zoomManager.getScale();
const scaleWithAllObjects = this.zoomManager.getScaleWithAllObjects();

const coefficient = initialScale / scaleWithAllObjects;

this.zoomManager.setScale(coefficient / actualTargetScale);

Steps to Reproduce the Problem

1. Display the layout of the large hall so that the initial scale after calling render() is not equal to 1.
2. Call zoomManager.setScale(1).
3. Call zoomManager.getScale(). If the received value is not equal to 1, the problem is relevant.

Specifications

• Version: latest commit at present: e2d5ae2 on 16 Dec 2019