void DemoCamera::SetViewMatrix(int width, int height)
{
// set the view port for this render section
glViewport(0, 0, (GLint) width, (GLint) height);
// set the projection matrix
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
//m_backPlane = 10000.0f;
gluPerspective(m_fov * 180.0f / 3.1416f, GLfloat (width) /GLfloat(height), m_frontPlane, m_backPlane);
// set the model view matrix
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
dVector pointOfInterest (m_matrix.m_posit + m_matrix.m_front);
gluLookAt(m_matrix.m_posit.m_x, m_matrix.m_posit.m_y, m_matrix.m_posit.m_z,
pointOfInterest.m_x, pointOfInterest.m_y, pointOfInterest.m_z,
m_matrix.m_up.m_x, m_matrix.m_up.m_y, m_matrix.m_up.m_z);
glGetIntegerv(GL_VIEWPORT, (GLint*)&m_viewport);
glGetDoublev(GL_MODELVIEW_MATRIX, m_modelViewMatrix);
glGetDoublev(GL_PROJECTION_MATRIX, m_projectionViewMatrix);
}
//------------------------------------------------------------------------------
//!
bool
CameraManipulator::onPointerPress( const Event& ev )
{
_mode = 0;
if( !camera() || !viewport()->world() ) return false;
// Picking.
if( ev.value() == 1 && Core::isKeyPressed( Key::SHIFT ) )
{
Rayf ray(
camera()->position(),
viewport()->direction( ev.position() )
);
Intersector::Hit hit;
if( Intersector::trace( viewport()->world(), ray, hit ) )
{
pointOfInterest( hit._pos );
return true;
}
}
_mode = ev.value();
_grabPos = ev.position();
_ref = camera()->referential();
_grabPoi = _poi;
_secondaryAxis = _ref.orientation().getAxisX();
if( Core::isKeyPressed( Key::ALT ) )
{
const int altModes[] = { 1, 2, 3, 2 };
_mode = altModes[_mode % 4];
}
Vec3f y = _ref.orientation().getAxisY();
if( _primaryAxis.dot( y ) < 0 )
{
_direction = -1.0f;
}
else
{
_direction = 1.0f;
}
const Mat4f& mat = viewport()->cameraMatrix();
Vec3f tc = mat | _poi;
Vec3f tc2 = mat | ( _poi + y );
_scale = 1.0f / ( tc2 - tc ).length();
return true;
}
