Is there any examples to draw custom mesh or element onto other elements?

[yjeugene888]

I would like to know is there any way to draw formwork onto different elements like wall, pillar, stairs. I also have different questions about api.

1) Is there any way to know the wall is concrete only or not? like some wall has multiple layer and some concrete wall has "metal" class. I also want to know whether which side is concrete or not.

2) Is there any way to calculate area or volume of concrete material in element?

Sorry I have not much knowledge on the api.

[jeremy_tammik · Accepted solution]

Welcome to the Revit API.

I would suggest you gather some minimal experience working with Revit manually through the end user interface before diving into programming. The API is very hard to understand otherwise. Next, I would suggest working through the getting started material:

https://thebuildingcoder.typepad.com/blog/about-the-author.html#2

That will answer a huge number of questions that we have already discussed numerous times and would like to avoid reiterating once again.

To answer your questions:

> Draw on another element:

• Dynamo Book and Texture Bitmap UV Coordinates
• Symbol, Instance, Material, Data, Journal, Break

> Wall layers:

Look at the wall compound structure:

• Wall Compound Layers
• Store Structured Data
• Many Issues Resolved
• Migrating the Building Coder Samples to Revit 2012
• Iteration and Springtime – Change is the Only Constant
• Identifying Wall Compound Layers and Parts
• Updating the Wall Compound Layer Structure
• DevCamp Day One
• Validate Roof Type and View OBJ on Android
• What's New in the Revit 2012 API
• Export Wall Parts Individually to DXF
• Setting the Compound Structure Core and Shell Layers
• Wall Compound Layer, Other Geometry and Licenses
• Traditional, 3D Printed & Vertical Compound Structures
• What's New in the Revit 2016 API
• What's New in the Revit 2022 API

> Calculate area and volume:

Revit does that automatically for you. You can access the result in a parameter value stored on the BIM element.

So, please do some more research on the fundamental API basics first, and then we can discuss detailed questions further on.

Good luck and lots of fun learning and exploring the Revit API!