/**
* Sets the rotational component (upper 3x3) of this matrix to the matrix
* values in the T precision Matrix3d argument; the other elements of
* this matrix are unchanged; a singular value decomposition is performed
* on this object's upper 3x3 matrix to factor out the scale, then this
* object's upper 3x3 matrix components are replaced by the passed rotation
* components, and then the scale is reapplied to the rotational
* components.
* @param m1 T precision 3x3 matrix
*/
inline static void Matrix4fSetRotationFromMatrix3f(Matrix4fT* NewObj, const Matrix3fT* m1) {
GLfloat scale;
scale = Matrix4fSVD(NewObj, NULL, NULL);
Matrix4fSetRotationScaleFromMatrix3f(NewObj, m1);
Matrix4fMulRotationScale(NewObj, scale);
}
Render::Render (View *view, Glib::RefPtr<Gtk::TreeSelection> selection) :
m_arcBall(new ArcBall()), m_view (view), m_selection(selection)
{
set_events (Gdk::POINTER_MOTION_MASK |
Gdk::BUTTON_MOTION_MASK |
Gdk::BUTTON_PRESS_MASK |
Gdk::BUTTON_RELEASE_MASK |
Gdk::BUTTON1_MOTION_MASK |
Gdk::BUTTON2_MOTION_MASK |
Gdk::BUTTON3_MOTION_MASK);
GdkGLConfig *glconfig;
// glconfig is leaked at program exit
glconfig = gdk_gl_config_new_by_mode
((GdkGLConfigMode) (GDK_GL_MODE_RGBA |
GDK_GL_MODE_ALPHA |
GDK_GL_MODE_STENCIL |
GDK_GL_MODE_DEPTH |
GDK_GL_MODE_DOUBLE));
if (!glconfig) // try single buffered
glconfig = gdk_gl_config_new_by_mode
((GdkGLConfigMode) (GDK_GL_MODE_RGBA |
GDK_GL_MODE_ALPHA |
GDK_GL_MODE_STENCIL |
GDK_GL_MODE_DEPTH));
if (!gtk_widget_set_gl_capability (get_widget(), glconfig,
NULL, TRUE, GDK_GL_RGBA_TYPE))
g_error (_("failed to init gl area\n"));
memset (&m_transform.M, 0, sizeof (m_transform.M));
Matrix3fT identity;
Matrix3fSetIdentity(&identity);
// set initial rotation 30 degrees around Y axis
identity.s.M11 = identity.s.M22 = 0.5253; // cos -45
identity.s.M12 = 0.851; // -sin -45
identity.s.M21 = -0.851; // sin -45
Matrix4fSetRotationScaleFromMatrix3f(&m_transform, &identity);
m_transform.s.SW = 1.0;
m_zoom = 120.0;
for (uint i = 0; i < N_LIGHTS; i++)
m_lights[i] = NULL;
m_selection->signal_changed().connect (sigc::mem_fun(*this, &Render::selection_changed));
}