C# Revit API Geometry Extraction and Analysis from Revit

Create a public class file named classes to define an extract element object and properties such as element, lowest point, highest point, line, family symbol, and level for placing objects.

Create and extract elements in Revit by using a command class to select multiple structural elements, then build a list with family symbol and level data.

Create an extract functions file to separate selection and extraction logic for geometry, rename and refactor methods, and organize element retrieval with public static helpers that operate on a document.

Explore geometry fundamentals in the Revit API by creating and manipulating points and vectors with x, y, z coordinates, converting between point and vector, and normalizing directions.

Learn how to create planes with plane.create in a sketch plane frame of reference, using origin and normal or three points for precise geometry placement, and exposing plane.origin and plane.normal.

Compute the intersection point of a line and a plane in C# using Revit geometry. Define plane origin, plane normal, and line direction with a tolerance constant.

Extract location data from a Revit element by reading its location point, handle structural columns, and save points in a Revit geometry object to extract faces and create the line.

Extract and convert element locations in the Revit API by handling location curves and location points, transforming curves to lines, and filtering by structural foundations and framing to analyze geometry.

Extract bulk solid geometry from Revit by using geometry options, geometry element, and per-object type checks to distinguish geometry instances from solids.

Extract faces and solids from geometry instances by casting to geometry instance, then to solid, collect phases via a phase array, and read faces into a list for analysis.

Create a review family on each face by converting the face to a plane, retrieving its center point, and creating a simple family at that position.

In testing placement, the lecture demonstrates locating a center-based genetic model, creating and positioning Revit family instances via symbols, handling phases, and addressing duplicates through translation and rotation.

Demonstrate projecting the centroid of a Revit geometry onto a plane to correct center-based optics, using extraction, transforms, and centroid computation.

Debug and refine a Revit API geometry extraction workflow by diagnosing translation errors, replacing bad solids with new solids, and correcting rotation and projection to align beams, columns, and foundations.

Learn to rotate Revit elements using the API by creating rotation transforms, rotating at a point with an axis and angle, and applying facing orientation for family instances.

Learn how to compute and apply a rotation offset in a Revit project by separating the angle, using a midpoint line as pivot, and aligning family elements with correct orientation.

Use the object transform and Revit geometry utilities to align and rotate structural framings, fixing facing orientation and translation, and prepare lines for intersections through horizontal angles and transformed solids.