If rr is a 1x5 or 5x1 vector, it specifies If rr is a 1x3 or 3x1 vector, it specifies the ellipsoid radii If rr is a scalar, this is a sphere with radius rr Node: node coordinates, 3 columns for x, y and z respectivelyįace: integer array with dimensions of NB x 3, each row representsĮlem: integer array with dimensions of NE x 4, each row representsįunction =meshanellip(c0,rr,tsize,maxvol)Ĭreate the surface and tetrahedral mesh of an ellipsoidĬ0: center coordinates (x0,y0,z0) of the ellipsoid Maxvol: maximu volume of the tetrahedral elements Tsize: maximum surface triangle size on the sphere =meshasphere(c0,r,tsize,maxvol)Ĭreate the surface and tetrahedral mesh of a sphereĬ0: center coordinates (x0,y0,z0) of the sphere Opt(1,2.).radbound: same as above, for each levelsetįunction =meshasphere(c0,r,tsize,maxvol) Opt.distbound: maximum deviation from the specified isosurfaces Opt.radbound: same as above, max radius of the Delaunay sphere Opt=a float number>1: max radius of the Delaunay sphere(element size) Return user defined surfaces via opt.surf if it exists Img: a volumetric binary image if img is empty, vol2surf will =vol2surf(img,ix,iy,iz,opt,dofix,method,isovalues)Ĭonverting a 3D volumetric image to surfaces Saves the interior points for each closed surface componentįunction =vol2surf(img,ix,iy,iz,opt,dofix,method,isovalues) Node: output, node coordinates of the tetrahedral meshĮlem: output, element list of the tetrahedral mesh, the lastįace: output, mesh surface element list of the tetrahedral mesh Isovalues: a list of isovalues where the levelset is defined Is not recommended unless other options has failed. If ones goal is to process a gray-scale volume, Uint8 volume, and 2) can not extract meshes from gray-scale
Volumes, however, its limitations include 1) only accept If you want to product meshes from binary or multi-region Generally speaking, 'cgalmesh' is the most robust path 'cgalmesh': use CGAL 3.5 3D mesher for direct mesh generation 'simplify': use binsurface and then simplify Method: 'cgalsurf' or omit: use CGAL surface mesher When method='cgalmesh', maxvol can specify the targetįor each label (subregion index) by the following syntaxĭofix: 1: perform mesh validation&repair, 0: skip repairing Maxvol: target maximum tetrahedral elem volume Ix,iy,iz: subvolume selection indices in x,y,z directions =vol2mesh(img,ix,iy,iz,opt,maxvol,dofix,method,isovalues)Ĭonvert a binary (or multi-valued) volume to tetrahedral mesh Input/output: please see details in the help for img2meshįunction =vol2mesh(img,ix,iy,iz,opt,maxvol,dofix,method,isovalues) Shortcut for img2mesh, a GUI for iso2mesh
Newnode: output, the smoothed node coordinates Method: same as in smoothsurf, default is 'laplacianhc' Simplified version of surface mesh smoothingįace: face element list of the surface meshĪlpha: scaler, smoothing parameter, v(k+1)=alpha*v(k)+(1-alpha)*mean(neighbors) Newnode=sms(node,face,iter,useralpha,method) Input/output: please see details in the help for mesh2volįunction newnode=sms(node,face,iter,alpha,method) Shortcut for mesh2vol, rasterizing a teterahedral mesh to a volume using graphics Newno=newno(1:3,:)' % newno and el now go back to the world coordinates Into the original input mesh space (work coordinate system). V2smap to convert a mesh generated from the rasterized volume The voxel coordinates back to the mesh space. V2smap (optional): a 4x4 matrix denoting the Affine transformation to map Img: a volumetric binary image at position of ndgrid(xi,yi,zi) Node: node list of the triangular surface, 3 columns for x/y/zįace: triangle node indices, each row is a triangleĭiv: division number along the shortest edge of the mesh (resolution) Shortcut for surf2vol, coverting a surface to a volumetric image Regions,holes: if ignored, iso2mesh assumes both are emptyįunction varargout=s2v(node,face,div,varargin) Method: if ignored, iso2mesh uses surf2mesh ('tetgen') to do the Structure (as the 'opt' input in cgals2m) If method='cgalpoly', s2m will call cgals2m and keepratio should be a Inputs and outputs are similar to those defined in surf2mesh Volumetric mesh generation from a closed surface, shortcut for surf2mesh =s2m(v,f,keepratio,maxvol,'tetgen',regions,holes) Method can be set to 'cgalmesh' in addition to those allowed by vol2surf.įunction =s2m(v,f,keepratio,maxvol,method,regions,holes) Inputs and outputs are similar to those defined in vol2surf In v2s, Surface mesh generation from binary or gray-scale volumetric images Inputs and outputs are similar to those defined in vol2meshįunction =v2s(img,isovalues,opt,method) Volumetric mesh generation from binary or gray-scale volumetric images Streamlined mesh generation - shortcutsįunction =v2m(img,isovalues,opt,maxvol,method)
iso2mesh primitive meshing functions 1.5. Streamlined mesh generation - shortcuts 1.2.
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