Extracting point cloud from patch model

Hi everyone, So I have a model I created using patch function and I need a point cloud of said model to play around with the depth information, so I was wondering if it is possible or not to extract a point cloud from a model and if yes how would I go about on doing so?

[KSSV]

More details needed.....show us your model and what you expecting.

[Alla]

Thank you for your reply, here is the model in question,what I am exprecting is simply to have a point cloud of the model

[Walter Roberson]

If you are expecting that each of the cuboids would become a whole bunch of points inside the volume of the cuboid, then you would need to do interpolation of some sort, or volume rendering.

[KSSV]

Is this model created in matlab?

[Alla]

Thank you both for your replies, I created the model on Matlab using Patch function and I only need a point cloud of the surfaces not the volume.

[Walter Roberson]

The patch object does not store the surface points, only the vertices.

[KSSV]

If you have the vertices in hand..you can create the surface using meshgrid.

Answer 1

[Walter Roberson]

There are two ways of constructing patch objects.

• For one of them, you can fetch the XData, YData, and ZData properties. Each column represents a face, so there are as many rows as the longest face; shorter faces have NaN to pad them out
• For the other, more efficient one, you can fetch the Vertices property to get a matrix in which each row defines a unique point. The Faces property gives information about how the vertices are connected.