template <class T> view<T> &view<T>::LookAt(T eX,T eY,T eZ,
T cX,T cY,T cZ,
T uX,T uY,T uZ){
Unit();
V3D F,UP,s,u;
UP.set(uX,uY,uZ);
F.set(eX-cX,eY-cY,eZ-cZ);
F.normal();
s.CrossProduct(UP,F);
u.CrossProduct(F,s);
s.normal();
u.normal();
this->arrMat[0]=s.x;
this->arrMat[1]=s.y;
this->arrMat[2]=s.z;
this->arrMat[4]=u.x;
this->arrMat[5]=u.y;
this->arrMat[6]=u.z;
this->arrMat[8]=F.x;
this->arrMat[9]=F.y;
this->arrMat[10]=F.z;
this->MultMatrix();
this->Translate(-eX,-eY,-eZ);
this->MultMatrix();
return *this;
}
template <class T> view<T> &view<T>::Frustum(T Left,T Right,T Down,T Up,T Near,T Far){
this->arrMat[0]=2*Near/(Right-Left);
this->arrMat[1]=0;
this->arrMat[2]=(Right+Left)/(Right-Left);
this->arrMat[3]=0;
this->arrMat[4]=0;
this->arrMat[5]=2*Near/(Up-Down);
this->arrMat[6]=(Up+Down)/(Up-Down);
this->arrMat[7]=0;
this->arrMat[8]=this->arrMat[9]=0;
this->arrMat[10]=(Far+Near)/(Far-Near);
this->arrMat[11]=2*Near*Far/(Far-Near);;
this->arrMat[12]=0;
this->arrMat[13]=0;
this->arrMat[14]=-1;
this->arrMat[15]=0;
glMultMatrixf(this->arrMat);
return *this;
} |
