Why are there more triangles than vertices? That seems odd to me.
yvbbrjdr
andrewdcampbell: because triangles can share vertices. Two triangles can share at most 2 vertices.
What I don't understand is that in the image, it looks like it is a rectangle mesh rather than a triangle mesh.
tyleryath
@yvbbrjdr I believe it appears to be a rectangle mesh because the image is a rendering of the surface with a grid texture applied. If we were to see a screen shot of the actual object's mesh, we would see it composed of triangles.
bchee
It is pretty interesting how laser scanning/lidar works. It uses the laser light to record the changes in distance and shape of the line to form a point cloud representation of the object then the triangle mesh is created from that representation. https://www.laserdesign.com/what-is-3d-scanning
Why are there more triangles than vertices? That seems odd to me.
andrewdcampbell: because triangles can share vertices. Two triangles can share at most 2 vertices.
What I don't understand is that in the image, it looks like it is a rectangle mesh rather than a triangle mesh.
@yvbbrjdr I believe it appears to be a rectangle mesh because the image is a rendering of the surface with a grid texture applied. If we were to see a screen shot of the actual object's mesh, we would see it composed of triangles.
It is pretty interesting how laser scanning/lidar works. It uses the laser light to record the changes in distance and shape of the line to form a point cloud representation of the object then the triangle mesh is created from that representation. https://www.laserdesign.com/what-is-3d-scanning