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First checkin for OpenMesh 2.0

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git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597
This commit is contained in:
Jan Möbius
2009-02-06 13:37:46 +00:00
parent c3321ebdd9
commit 97f515985d
417 changed files with 76182 additions and 0 deletions
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46
Tools/Decimater/roundness.m Normal file
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# angle in degrees [0,60]
# [replace :angle: with a value between 0 and 60]
alpha_d = :angle:;
# compute roundness of first case
alpha = pi * alpha_d/180;
A = [ 0 0 0 ]';
B = [ 2*cos(alpha) 0 0 ]';
C = [ cos(alpha) sin(alpha) 0 ]';
#
vecAC=C-A;
vecAB=B-A;
aa = norm(B-C)^2;
bb = norm(vecAC)^2;
cc = norm(vecAB)^2;
AA = norm(cross(vecAC,vecAB))^2;
nom = AA * min( aa, min(bb,cc) );
denom = aa * bb * cc;
nR1 = sqrt(4.0/3.0) * sqrt(nom/denom)
# compute roundness of 2nd case
alpha = pi * ((180-alpha_d)/2)/180;
A = [ 0 0 0 ]';
B = [ 2*cos(alpha) 0 0 ]';
C = [ cos(alpha) sin(alpha) 0 ]';
#
vecAC=C-A;
vecAB=B-A;
aa = norm(B-C)^2;
bb = norm(vecAC)^2;
cc = norm(vecAB)^2;
AA = norm(cross(vecAC,vecAB))^2;
nom = AA * min( aa, min(bb,cc) );
denom = aa * bb * cc;
nR2 = sqrt(4.0/3.0) * sqrt(nom/denom)