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/************************************************************************
Common code for ball-based rotation controllers.
$Id: baseball.cxx 427 2004-09-27 04:45:31Z garland $
************************************************************************/
#include <gfx/gfx.h>
#include <gfx/gl.h>
#include <gfx/baseball.h>
#include <sstream>
namespace gfx
{
Baseball::Baseball()
{
curquat = Quat::ident();
trans=0.0;
ctr=0.0;
radius=1;
}
void Baseball::apply_transform()
{
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glTranslated(trans[0], trans[1], trans[2]);
glTranslated(ctr[0], ctr[1], ctr[2]);
const Mat4 M=unit_quat_to_matrix(curquat);
glMultMatrixd(M);
glTranslated(-ctr[0], -ctr[1], -ctr[2]);
}
void Baseball::unapply_transform()
{
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}
void Baseball::write(std::ostream& out)
{
out << "baseball ";
out << curquat << " " << trans << " " << ctr << " " << radius << std::endl;
}
void Baseball::read(std::istream& in)
{
std::string name;
in >> name;
in >> curquat >> trans >> ctr >> radius;
}
} // namespace gfx
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