google maps api V3 build perpendicular from the makrer to the polyline - connect

I have a polyline and a marker on the google maps. I need to build perpendicular from marker to the polyline. it is implemented in the API V3?

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Map works with Nodejs - geocoding, map display with layers

I need to use maps in nodejs project.
First task is to convert bunch of addresses to coordinates.
Next, I need to display map with heatmap layer
Which provider to choose, OSM, Google, Bing?
What about nodejs, are there any good libs that go straighforward with this?
I expect it to be free and most of the addresses to be found. For some reason, Bing and Google geocoding api demos are finding less than actual maps applications

Azure maps indoor module : How to draw a path between two points in indoor navigation using azure maps?

I am working on POC for Azure maps indoor navigation using WEB SDK. For this, I have followed all the documentation (Using creator upload sample_drawing_package.zip, you can check this link for doc: Use Creator to create indoor maps.
Requirement: I want to to draw a path in between two points (these points configured as datasets/tiles/units in indoor map).
**For more Info, please check this GitHub query conversation : Get Navigable Lat and Long between two Units
I request someone help me on this.
Indoor routing is not yet supported, but is planned.

Fabric js - How to draw cloud shape using mouse event?

I have been searching to draw cloud shape while mouse drag using Fabric Js. My idea is not to be like free drawing. Can anyone suggest how to draw cloud shape over canvas using fabric js mouse move up and down events?

Can I use Google Earth Server as the base map for openLayers?

I am trying to embed a map in my web application and am looking at options to start from scratch. I have access to a google earth server for thick client google earth. I do not have the option to use google earth plugin. (clients are using Linux and there is no google earth plugin available on Linux). Can I use the google Earth server to somehow create a base map or WMS service for use in OpenLayers?
From my point of view there is no problem using it as a WMS base layer. Like this example.

can't find google directions api in google developers

I'm building an iphone app based on maps using MapView and now I want to show driving directions in it between two points without the use of Google Maps Api. I'm trying to find directions api but cant.how should i solve this problem or use any other idea.
Here is the Google Directions API
https://developers.google.com/maps/documentation/directions/

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