【Houdini】矩阵变换

matrix m = indent();

float scale = fit（）；float scale = chf（“scale”）；

translate(m,move)

 scale(m,scale) //scale（m，set（scale，1,1））；

p *=m;

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逆矩阵

matrix mat = 4@mat；

matrix imat = invert（mat）；

@P *=imat；

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matrix m = lookat（from,to,roll）

matrix m = instance（P,N,S）

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rotate(m,angle,radians,axis)

rotate(m,angle,axis)

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int trs = chi("trs");

intxyz = chi("xyz");

matrix m = maketransform（trs,xyz,move,rotate,scale）

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eulerquatanion()

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解构矩阵

4@mat = m；

int trs = chi("trs");

 intxyz = chi("xyz");

vector t,r,s;

cracktransform（trs,xyz,set(0,0,0),4@m,t,r,s）;

v@t= t;

v@r = r;

v@s= s;

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vector v1 =

vector v2 =

matrix m =  dihedral(v1,v2);

@P *=m;