www.gusucode.com > matlab 案例源码 matlab代码程序 > matlab/AlphaTriangulationForA3DPointCloudExample.m
%% Compute Triangulation for 3-D Point Cloud % Create a set of 3-D points. % Copyright 2015 The MathWorks, Inc. [x1, y1, z1] = sphere(24); x1 = x1(:); y1 = y1(:); z1 = z1(:); x2 = x1+5; P = [x1 y1 z1; x2 y1 z1]; P = unique(P,'rows'); %% % Create and plot an alpha shape for the point cloud using an alpha radius of 1. shp = alphaShape(P,1); plot(shp) %% % Use |alphaTriangulation| to recover the triangulation that defines the domain of the alpha shape. tri = alphaTriangulation(shp); %% % Find the total number of tetrahedra that make up the alpha shape. numtetrahedra = size(tri,1)