First checkin for OpenMesh 2.0
git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597
This commit is contained in:
Jan Möbius
142
Tools/VDPM/ViewingParameters.cc
Normal file
142
Tools/VDPM/ViewingParameters.cc
Normal file
@@ -0,0 +1,142 @@
|
||||
/*===========================================================================*\
|
||||
* *
|
||||
* OpenMesh *
|
||||
* Copyright (C) 2001-2003 by Computer Graphics Group, RWTH Aachen *
|
||||
* www.openmesh.org *
|
||||
* *
|
||||
*---------------------------------------------------------------------------*
|
||||
* *
|
||||
* License *
|
||||
* *
|
||||
* This library is free software; you can redistribute it and/or modify it *
|
||||
* under the terms of the GNU Lesser General Public License as published *
|
||||
* by the Free Software Foundation, version 2.1. *
|
||||
* *
|
||||
* This library is distributed in the hope that it will be useful, but *
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of *
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
|
||||
* Lesser General Public License for more details. *
|
||||
* *
|
||||
* You should have received a copy of the GNU Lesser General Public *
|
||||
* License along with this library; if not, write to the Free Software *
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
|
||||
* *
|
||||
\*===========================================================================*/
|
||||
|
||||
//=============================================================================
|
||||
//
|
||||
// CLASS newClass - IMPLEMENTATION
|
||||
//
|
||||
//=============================================================================
|
||||
|
||||
|
||||
//== INCLUDES =================================================================
|
||||
|
||||
#include <OpenMesh/Tools/VDPM/ViewingParameters.hh>
|
||||
|
||||
//== NAMESPACES ===============================================================
|
||||
|
||||
namespace OpenMesh {
|
||||
namespace VDPM {
|
||||
|
||||
|
||||
//== IMPLEMENTATION ==========================================================
|
||||
|
||||
|
||||
ViewingParameters::
|
||||
ViewingParameters()
|
||||
{
|
||||
fovy_ = 45.0f;
|
||||
aspect_ = 1.0f;
|
||||
tolerance_square_ = 0.001f;
|
||||
}
|
||||
|
||||
void
|
||||
ViewingParameters::
|
||||
update_viewing_configurations()
|
||||
{
|
||||
// |a11 a12 a13|-1 | a33a22-a32a23 -(a33a12-a32a13) a23a12-a22a13 |
|
||||
// |a21 a22 a23| = 1/DET*|-(a33a21-a31a23) a33a11-a31a13 -(a23a11-a21a13)|
|
||||
// |a31 a32 a33| | a32a21-a31a22 -(a32a11-a31a12) a22a11-a21a12 |
|
||||
// DET = a11(a33a22-a32a23)-a21(a33a12-a32a13)+a31(a23a12-a22a13)
|
||||
|
||||
float invdet;
|
||||
float a11, a12, a13, a21, a22, a23, a31, a32, a33;
|
||||
Vec3f inv_rot[3], trans;
|
||||
|
||||
a11 = (float) modelview_matrix_[0];
|
||||
a12 = (float) modelview_matrix_[4];
|
||||
a13 = (float) modelview_matrix_[8];
|
||||
trans[0] = (float) modelview_matrix_[12];
|
||||
|
||||
a21 = (float) modelview_matrix_[1];
|
||||
a22 = (float) modelview_matrix_[5];
|
||||
a23 = (float) modelview_matrix_[9];
|
||||
trans[1] = (float) modelview_matrix_[13];
|
||||
|
||||
a31 = (float) modelview_matrix_[2];
|
||||
a32 = (float) modelview_matrix_[6];
|
||||
a33 = (float) modelview_matrix_[10];
|
||||
trans[2] = (float) modelview_matrix_[14];
|
||||
|
||||
invdet=a11*(a33*a22-a32*a23) - a21*(a33*a12-a32*a13) + a31*(a23*a12-a22*a13);
|
||||
invdet= (float) 1.0/invdet;
|
||||
|
||||
(inv_rot[0])[0] = (a33*a22-a32*a23) * invdet;
|
||||
(inv_rot[0])[1] = -(a33*a12-a32*a13) * invdet;
|
||||
(inv_rot[0])[2] = (a23*a12-a22*a13) * invdet;
|
||||
(inv_rot[1])[0] = -(a33*a21-a31*a23) * invdet;
|
||||
(inv_rot[1])[1] = (a33*a11-a31*a13) * invdet;
|
||||
(inv_rot[1])[2] = -(a23*a11-a21*a13) * invdet;
|
||||
(inv_rot[2])[0] = (a32*a21-a31*a22) * invdet;
|
||||
(inv_rot[2])[1] = -(a32*a11-a31*a12) * invdet;
|
||||
(inv_rot[2])[2] = (a22*a11-a21*a12) * invdet;
|
||||
|
||||
eye_pos_ = - Vec3f(dot(inv_rot[0], trans),
|
||||
dot(inv_rot[1], trans),
|
||||
dot(inv_rot[2], trans));
|
||||
right_dir_ = Vec3f(a11, a12, a13);
|
||||
up_dir_ = Vec3f(a21, a22, a23);
|
||||
view_dir_ = - Vec3f(a31, a32, a33);
|
||||
|
||||
Vec3f normal[4];
|
||||
//float aspect = width() / height();
|
||||
float half_theta = fovy() * 0.5f;
|
||||
float half_phi = atanf(aspect() * tanf(half_theta));
|
||||
|
||||
float sin1 = sinf(half_theta);
|
||||
float cos1 = cosf(half_theta);
|
||||
float sin2 = sinf(half_phi);
|
||||
float cos2 = cosf(half_phi);
|
||||
|
||||
normal[0] = cos2 * right_dir_ + sin2 * view_dir_;
|
||||
normal[1] = -cos1 * up_dir_ - sin1 * view_dir_;
|
||||
normal[2] = -cos2 * right_dir_ + sin2 * view_dir_;
|
||||
normal[3] = cos1 * up_dir_ - sin1 * view_dir_;
|
||||
|
||||
for (int i=0; i<4; i++)
|
||||
frustum_plane_[i] = Plane3d(normal[i], eye_pos_);
|
||||
}
|
||||
|
||||
void
|
||||
ViewingParameters::
|
||||
PrintOut()
|
||||
{
|
||||
std::cout << " ModelView matrix: " << std::endl;
|
||||
std::cout << " |" << modelview_matrix_[0] << " " << modelview_matrix_[4] << " " << modelview_matrix_[8] << " " << modelview_matrix_[12] << "|" << std::endl;
|
||||
std::cout << " |" << modelview_matrix_[1] << " " << modelview_matrix_[5] << " " << modelview_matrix_[9] << " " << modelview_matrix_[13] << "|" << std::endl;
|
||||
std::cout << " |" << modelview_matrix_[2] << " " << modelview_matrix_[6] << " " << modelview_matrix_[10] << " " << modelview_matrix_[14] << "|" << std::endl;
|
||||
std::cout << " |" << modelview_matrix_[3] << " " << modelview_matrix_[7] << " " << modelview_matrix_[11] << " " << modelview_matrix_[15] << "|" << std::endl;
|
||||
std::cout << " Fovy: " << fovy_ << std::endl;
|
||||
std::cout << " Aspect: " << aspect_ << std::endl;
|
||||
std::cout << " Tolerance^2: " << tolerance_square_ << std::endl;
|
||||
std::cout << " Eye Pos: " << eye_pos_ << std::endl;
|
||||
std::cout << " Right dir: " << right_dir_ << std::endl;
|
||||
std::cout << " Up dir: " << up_dir_ << std::endl;
|
||||
std::cout << " View dir: " << view_dir_ << std::endl;
|
||||
}
|
||||
|
||||
//=============================================================================
|
||||
} // namespace VDPM
|
||||
} // namespace OpenMesh
|
||||
//=============================================================================
|
||||
Reference in New Issue
Block a user