display::scoped_state::scoped_state(display & parent, const gsgl::flags_t & flags)
: parent(parent)
{
parent.bind();
glPushAttrib(GL_ALL_ATTRIB_BITS); CHECK_GL_ERRORS();
glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS); CHECK_GL_ERRORS();
enable(flags);
} // display::scoped_state::scoped_state()
display::scoped_ortho::scoped_ortho(display & parent)
: parent(parent)
{
parent.bind();
glMatrixMode(GL_PROJECTION);
glPushMatrix(); CHECK_GL_ERRORS();
glLoadIdentity(); CHECK_GL_ERRORS();
glOrtho(0, static_cast<float>(parent.get_width()), 0, static_cast<float>(parent.get_height()), -1, 1);
} // display::scoped_orth::scoped_orth()
display::scoped_perspective::scoped_perspective(display & parent, const gsgl::real_t & field_of_view, const gsgl::real_t & aspect_ratio, const gsgl::real_t & near_distance, const gsgl::real_t & far_distance)
: parent(parent)
{
parent.bind();
glMatrixMode(GL_PROJECTION); CHECK_GL_ERRORS();
glPushMatrix(); CHECK_GL_ERRORS();
glLoadIdentity(); CHECK_GL_ERRORS();
gluPerspective(field_of_view, aspect_ratio, near_distance, far_distance); CHECK_GL_ERRORS();
} // display::scoped_perspective::scoped_perspective()
display::scoped_modelview::scoped_modelview(display & parent, const transform *mv)
: parent(parent), mv(mv)
{
parent.bind();
glMatrixMode(GL_MODELVIEW); CHECK_GL_ERRORS();
glPushMatrix(); CHECK_GL_ERRORS();
if (mv)
{
glLoadMatrixf(mv->ptr()); CHECK_GL_ERRORS();
}
} // display::scoped_modelview::scoped_modelview()
display::scoped_text::scoped_text(display & parent)
: parent(parent)
{
parent.bind();
// record 3d info
glGetIntegerv(GL_VIEWPORT, text_draw_viewport); CHECK_GL_ERRORS();
glGetFloatv(GL_MODELVIEW_MATRIX, text_draw_modelview.ptr()); CHECK_GL_ERRORS();
glGetFloatv(GL_PROJECTION_MATRIX, text_draw_projection.ptr()); CHECK_GL_ERRORS();
text_draw_pm = text_draw_projection * text_draw_modelview; CHECK_GL_ERRORS();
// set up projection and modelview for drawing text
glPushAttrib(GL_ALL_ATTRIB_BITS); CHECK_GL_ERRORS();
glPushClientAttrib(GL_CLIENT_ALL_ATTRIB_BITS); CHECK_GL_ERRORS();
glMatrixMode(GL_PROJECTION); CHECK_GL_ERRORS();
glPushMatrix(); CHECK_GL_ERRORS();
glLoadIdentity(); CHECK_GL_ERRORS();
glOrtho(0.0, parent.surface->w, 0.0, parent.surface->h, -1, 1); CHECK_GL_ERRORS();
glMatrixMode(GL_MODELVIEW); CHECK_GL_ERRORS();
glPushMatrix(); CHECK_GL_ERRORS();
glLoadIdentity(); CHECK_GL_ERRORS();
} // display::scoped_text::scoped_text()
display::scoped_viewport::scoped_viewport(display & parent)
: parent(parent)
{
parent.bind();
glViewport(0, 0, parent.get_width(), parent.get_height());
} // display::scoped_viewport::scoped_viewport()
