kicad/3d-viewer/3d_rendering/ctrack_ball.cpp

118 lines
3.4 KiB
C++

/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2015 Mario Luzeiro <mrluzeiro@ua.pt>
* Copyright (C) 1992-2015 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
/**
* @file ctrack_ball.cpp
* @brief
*/
#include "common_ogl/openGL_includes.h"
#include "ctrack_ball.h"
#include "trackball.h"
#include <wx/log.h>
CTRACK_BALL::CTRACK_BALL( float aRangeScale ) : CCAMERA( aRangeScale )
{
wxLogTrace( m_logTrace, wxT( "CTRACK_BALL::CTRACK_BALL" ) );
memset( m_quat, 0, sizeof( m_quat ) );
trackball( m_quat, 0.0, 0.0, 0.0, 0.0 );
}
void CTRACK_BALL::Drag( const wxPoint &aNewMousePosition )
{
m_parametersChanged = true;
double spin_quat[4];
// "Pass the x and y coordinates of the last and current positions of
// the mouse, scaled so they are from (-1.0 ... 1.0)."
float zoom = std::min( m_zoom, 1.0f );
trackball( spin_quat,
zoom * (2.0 * m_lastPosition.x - m_windowSize.x) / m_windowSize.x,
zoom * (m_windowSize.y - 2.0 * m_lastPosition.y) / m_windowSize.y,
zoom * (2.0 * aNewMousePosition.x - m_windowSize.x) / m_windowSize.x,
zoom * ( m_windowSize.y - 2.0 * aNewMousePosition.y ) / m_windowSize.y);
add_quats( spin_quat, m_quat, m_quat );
GLfloat rotationMatrix[4][4];
build_rotmatrix( rotationMatrix, m_quat );
m_rotationMatrix = glm::make_mat4( &rotationMatrix[0][0] );
updateViewMatrix();
updateFrustum();
}
void CTRACK_BALL::SetBoardLookAtPos( const SFVEC3F &aBoardPos )
{
if( m_boardLookAt_pos != aBoardPos )
{
m_boardLookAt_pos = -aBoardPos;
updateViewMatrix();
updateFrustum();
m_parametersChanged = true;
}
}
void CTRACK_BALL::Pan( const wxPoint &aNewMousePosition )
{
m_parametersChanged = true;
// Current zoom and an additional factor are taken into account
// for the amount of panning.
float zoom = std::min( m_zoom, 1.0f );
float panFactor = m_range_scale * zoom * (zoom * 4.0f);
m_camera_pos.x -= panFactor * ( m_lastPosition.x - aNewMousePosition.x ) / m_windowSize.x;
m_camera_pos.y -= panFactor * (aNewMousePosition.y - m_lastPosition.y ) / m_windowSize.y;
updateViewMatrix();
updateFrustum();
}
void CTRACK_BALL::Pan( const SFVEC3F &aDeltaOffsetInc )
{
m_parametersChanged = true;
m_camera_pos += aDeltaOffsetInc;
updateViewMatrix();
updateFrustum();
}
void CTRACK_BALL::Reset()
{
m_parametersChanged = true;
}