Created
June 4, 2015 10:23
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I used CGAL4.6 on a ubuntu 12.04 (64 bit) machine and g++ 4.6.3 compiler. | |
The code i used is the same CGAL-4.6/examples/Mesh_3/ mesh_3D_image.cpp, but with pipe.inr (see after) as input file and : | |
facet_angle = 30 | |
facet_size = 0.8 | |
facet_distance = 2 | |
cell_rad_edge_ratio = 2.0 | |
cell_size = 0.8 | |
For creating the .img file i used the following matlab script: | |
spacings=[0.2 0.2 0.3]; | |
X=uint8(zeros(305, 380, 470)); | |
[nx,ny,nz]=size(X); | |
center=0.5*spacings.*size(X); | |
bbox=spacings.*size(X); | |
radius1=0.85*min(0.5*bbox(1:2)); | |
radius0=0.65*min(0.5*bbox(1:2)); | |
clear('bbox'); | |
length=0.85*(spacings(3)*nz); | |
dh=0.5*(1.0-0.85)*(spacings(3)*nz); | |
dh2=0.05*0.85*(spacings(3)*nz); | |
z0=dh; | |
z1=dh+length; | |
iz0=floor(z0/spacings(3)+0.5); | |
iz1=round(z1/spacings(3)+0.5); | |
iz0pdh2=round((z0+dh2)/spacings(3)+0.5); | |
iz1mdh2=floor((z1-dh2)/spacings(3)+0.5); | |
ic0=floor((center(3)-0.5*dh2)/spacings(3)+0.5); | |
ic1=round((center(3)+0.5*dh2)/spacings(3)+0.5); | |
clear('dh'); | |
for ix=1:nx | |
x=(ix-0.5)*spacings(1); | |
dx=x-center(1); | |
for iy=1:ny | |
y=(iy-0.5)*spacings(2); | |
dy=y-center(2); | |
r=sqrt(dx*dx+dy*dy); | |
if((r>=radius0) && (r<=radius1)) | |
%1 default if is inside the pipe | |
X(ix,iy,(iz0:iz1))=uint8(1); | |
X(ix,iy,(iz0:iz0pdh2))=uint8(2); | |
X(ix,iy,(iz1mdh2:iz1))=uint8(2); | |
for iz=ic0:1:ic1 | |
z=(iz-0.5)*spacings(3); | |
dz=2*abs(z-center(3)); | |
%if on one extrema 2 | |
if( (dz<=dh2) ) | |
X(ix,iy,iz)=uint8(1); | |
end | |
%if is within the center then labeling | |
clear('z','dz'); | |
end | |
end | |
clear('r','y','dy'); | |
end | |
clear('x','dx') | |
end | |
clear('z0','z1','iz0pdh2','iz1mdh2','ic0','ic1'); | |
X=uint8(X); | |
clear('ix','iy','iz'); | |
disp('write coarse pipe example for potential'); | |
dirPipe=[dirExample,'/pipeCoarse4Potential']; | |
system(['mkdir -p ',dirPipe]); | |
fid=fopen([dirPipe,'/pipe.inr'],'wb'); | |
if(fid==-1) | |
error('You do not have permission to save mesh files.'); | |
end | |
btype='unsigned fixed'; | |
dtype='uint8'; | |
bitlen=8; | |
header=sprintf(['#INRIMAGE-4#{\nXDIM=%d\nYDIM=%d\nZDIM=%d\nVDIM=1\nTYPE=%s\n' ... | |
'PIXSIZE=%d bits\nCPU=decm\nVX=%6.4f\nVY=%6.4f\nVZ=%6.4f\n'],size(X),btype,bitlen,spacings); | |
header=[header char(10*ones(1,256-4-length(header))) '##}' char(10)]; | |
fwrite(fid,header,'char'); | |
fwrite(fid,X,dtype); | |
fclose(fid); | |
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I used CGAL4.6 on a ubuntu 12.04 (64 bit) machine and g++ 4.6.3 compiler.
The code i used is the same CGAL-4.6/examples/Mesh_3/ mesh_3D_image.cpp, but with pipe.inr (see after) as input file and :
facet_angle = 30
facet_size = 0.8
facet_distance = 2
cell_rad_edge_ratio = 2.0
cell_size = 0.8
attached the matlab script I used for creating the .inr file