function
[Sph]=Concrete Bone(range,Num,rmin,rmax)
Num=100;
xmin=1;
xmax=5;
ymin=2;
ymax=6;
zmin=3;
zmax=7;
rmin=0.05;
rmax=0.5;
cum=0;
for i=1:1000000
if cum==Num
break;
end
x=rand(1)*Range([xmin,xmax]);%x的取值范围
y=rand(1)*Range([ymin,ymax]);%同上
z=rand(1)*Range([zmin,zmax]);%同上
r=rand(1)*Range([rmin,rmax]);%同上
if ((x- r>xmin & x+r<xmax) & (y- r>ymin & y+r<ymax)& (z- r>zmin & z+r<zmax))
if cum==0
cum=cum+1;
Sph(cum,:)=[x y z r];
else
sum=0;
for j=1:cum
D=sqrt((Sph(j,1)- x)^2+(Sph(j,2)- y)^2+(Sph(j,3)- z)^2);
if D<Sph(j,4)+r
break;
else
sum=sum+1;
end
end
if sum==cum
cum=cum+1;
Sph(cum,:)=[x y z r];
end
end
end
end
[xx,yy,zz]=sphere(20);
for i=1:Num
surf (xx*Sph (i,4)+Sph (i,1),yy*Sph (i,4)+Sph (i,2),zz*Sph (i,4)+Sph(i,3));
hold on;
end
axis image；
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