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replaced Matrix44f to Matrix44<S>, added LookAt

This commit is contained in:
ganovelli 2004-11-03 09:25:52 +00:00
parent b6d9d125da
commit 92f008a33d
1 changed files with 26 additions and 13 deletions
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39
vcg/math/shot.h
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@ -23,6 +23,9 @@
/****************************************************************************
History
$Log: not supported by cvs2svn $
Revision 1.5 2004/10/22 14:29:40 ponchio
#include <...Point --> #include <...point
Revision 1.4 2004/10/07 14:41:31 fasano
Little fix on ViewPoint() method
@ -47,11 +50,8 @@ creation
#ifndef __VCGLIB_SHOT
#define __VCGLIB_SHOT
// #include <vector>
// #include <vcg/Matrix44.h>
// #include <vcg/Box3.h>
#include <vcg/space/point2.h>
#include <vcg/space/point3.h>
#include <vcg/space/Point2.h>
#include <vcg/space/Point3.h>
#include <vcg/math/similarity.h>
#include <vcg/math/camera.h>
@ -71,9 +71,9 @@ public:
void SetValid(bool v){ if(!v) flags|=NOTVALID_BIT; else flags&=~NOTVALID_BIT;}
Camera<S> & camera; // the camera that shot
vcg::Similarity<S,vcg::Matrix44f> similarity; // the position from where it did it
vcg::Similarity<S,vcg::Matrix44<S> > similarity; // the position from where it did it
Shot( Camera<S> & c):camera(c){}
Shot( Camera<S> & c):camera(c){similarity.SetIdentity();}
Camera<S> & Camera(){return camera;};
@ -81,7 +81,7 @@ public:
vcg::Point3<S> Axis(const int & i)const;
/// take the viewpoint
const vcg::Point3<S> ViewPoint();
const vcg::Point3<S> ViewPoint()const;
/// set the viewpoint
void SetViewPoint(const vcg::Point3<S> & viewpoint);
@ -89,7 +89,11 @@ public:
/// look at
void LookAt(const vcg::Point3<S> & z_dir,const vcg::Point3<S> & up);
/// look at
/// look at (same as opengl)
void LookAt(const S & eye_x,const S & eye_y,const S & eye_z,const S & at_x,const S & at_y,const S & at_z,
const S & up_x,const S & up_y,const S & up_z);
/// look towards
void LookTowards(const vcg::Point3<S> & z_dir,const vcg::Point3<S> & up);
/// convert a 3d point in camera coordinates
@ -101,10 +105,11 @@ public:
/// take the distance from the point p and the plane parallel to the camera plane and passing through the view
/// point. The would be z depth
S Depth(const vcg::Point3<S> & p)const;
}; // end class definition
template <class S>
const vcg::Point3<S> Shot<S>::ViewPoint(){
const vcg::Point3<S> Shot<S>::ViewPoint() const {
//Matrix44<S> m = similarity.Matrix();
//return Point3<S>(m[0][3],m[1][3],m[2][3]);
return -similarity.tra;
@ -128,6 +133,14 @@ void Shot<S>::LookAt(const vcg::Point3<S> & z_dir,const vcg::Point3<S> & up){
LookTowards(z_dir-ViewPoint(),up);
}
template <class S>
void Shot<S>::LookAt(const S & eye_x,const S & eye_y,const S & eye_z,const S & at_x,const S & at_y,const S & at_z,
const S & up_x,const S & up_y,const S & up_z){
SetViewPoint(Point3<S>(eye_x,eye_y,eye_z));
LookAt(Point3<S>(at_x,at_y,at_z),Point3<S>(up_x,up_y,up_z));
}
template <class S>
void Shot<S>::LookTowards(const vcg::Point3<S> & z_dir,const vcg::Point3<S> & up){
vcg::Point3<S> x_dir = up ^-z_dir ;
@ -135,9 +148,9 @@ void Shot<S>::LookTowards(const vcg::Point3<S> & z_dir,const vcg::Point3<S> & up
Matrix44<S> m;
m.SetIdentity();
*(vcg::Point3<S> *)&m[0][0] = x_dir/x_dir.SquaredNorm();
*(vcg::Point3<S> *)&m[1][0] = y_dir/y_dir.SquaredNorm();
*(vcg::Point3<S> *)&m[2][0] = -z_dir/z_dir.SquaredNorm();
*(vcg::Point3<S> *)&m[0][0] = x_dir/x_dir.Norm();
*(vcg::Point3<S> *)&m[1][0] = y_dir/y_dir.Norm();
*(vcg::Point3<S> *)&m[2][0] = -z_dir/z_dir.Norm();
similarity.rot.FromMatrix(m);
}