//------------------------------------------------------------------------------
Example::Example(void)
: glfw_error_handler(glfwSetErrorCallback(HandleGLFWError))
, glfw_init_ok(glfwInit())
, glfw_window(InitWindow())
, gl()
, palette(MakePalette())
, program(MakeProgram())
, view_matrix(program, "ViewMatrix")
, screen(
oglplus::List("Position").Get(),
oglplus::shapes::Screen(),
program
), screen_width(800)
, screen_height(600)
, view_aspect(4.0/3.0)
, view_divs(4)
, view_tile(0)
, view_tile_index(view_divs*view_divs)
, mouse_left_down(false)
, mouse_middle_down(false)
, frame_no(0)
{
oglplus::UniformSampler(program, "Palette").Set(0);
for(unsigned i=0; i!=view_tile_index.size(); ++i)
view_tile_index[i] = i;
CenterView();
UpdateView();
screen.Use();
self_ptr(this);
gl.Enable(oglplus::Capability::ScissorTest);
}
bool Render::on_expose_event(GdkEventExpose* event)
{
GdkGLContext *glcontext = gtk_widget_get_gl_context (get_widget());
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (get_widget());
if (!gldrawable || !gdk_gl_drawable_gl_begin (gldrawable, glcontext))
return false;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glLoadIdentity();
glTranslatef (0.0, 0.0, -2.0 * m_zoom);
glMultMatrixf (m_transform.M);
CenterView();
glPushMatrix();
glColor3f(0.75f,0.75f,1.0f);
glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
Gtk::TreeModel::iterator iter = m_selection->get_selected();
m_view->Draw (iter);
glPopMatrix();
if (gdk_gl_drawable_is_double_buffered(gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush();
gdk_gl_drawable_gl_end (gldrawable);
return true;
}
EditView::EditView( Editor& editor, int w, int h ) :
m_Editor(editor),
m_PrevPos(-1,-1),
m_Canvas( new Img(FMT_RGBX8,w,h ) ),
m_ViewBox(0,0,w,h),
m_Frame(0),
m_Zoom(4),
m_Offset(0,0),
m_Panning(false),
m_PanAnchor(0,0)
{
m_XZoom = m_Zoom*editor.Proj().Settings().PixW;
m_YZoom = m_Zoom*editor.Proj().Settings().PixH;
CenterView();
DrawView(m_ViewBox);
Proj().AddListener( this );
editor.AddView( this );
}
guint Render::find_object_at(gdouble x, gdouble y)
{
// Render everything in selection mode
GdkGLContext *glcontext = gtk_widget_get_gl_context (get_widget());
GdkGLDrawable *gldrawable = gtk_widget_get_gl_drawable (get_widget());
const GLsizei BUFSIZE = 256;
GLuint select_buffer[BUFSIZE];
if (!gldrawable || !gdk_gl_drawable_gl_begin (gldrawable, glcontext))
return 0;
glSelectBuffer(BUFSIZE, select_buffer);
(void)glRenderMode(GL_SELECT);
GLint viewport[4];
glMatrixMode (GL_PROJECTION);
glPushMatrix();
glLoadIdentity ();
glGetIntegerv(GL_VIEWPORT,viewport);
gluPickMatrix(x,viewport[3]-y,2,2,viewport); // 2x2 pixels around the cursor
gluPerspective (45.0f, (float)get_width()/(float)get_height(),1.0f, 1000000.0f);
glMatrixMode (GL_MODELVIEW);
glInitNames();
glPushName(0);
glLoadIdentity ();
glTranslatef (0.0, 0.0, -2.0 * m_zoom);
glMultMatrixf (m_transform.M);
CenterView();
glPushMatrix();
glColor3f(0.75f,0.75f,1.0f);
glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
Gtk::TreeModel::iterator no_object;
m_view->Draw (no_object);
// restor projection and model matrices
glMatrixMode(GL_PROJECTION);
glPopMatrix();
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
// restore rendering mode
GLint hits = glRenderMode(GL_RENDER);
if (gdk_gl_drawable_is_double_buffered(gldrawable))
gdk_gl_drawable_swap_buffers (gldrawable);
else
glFlush();
gdk_gl_drawable_gl_end (gldrawable);
// Process the selection hits
GLuint *ptr = select_buffer;
GLuint name = 0;
GLuint minZ = G_MAXUINT;
for (GLint i = 0; i < hits; i++) { /* for each hit */
GLuint n = *ptr++; // number of hits in this record
GLuint z1 = *ptr++; // Minimum Z in the hit record
ptr++; // Skip Maximum Z coord
if (n > 0 && z1 < minZ) {
// Found an object further forward.
name = *ptr;
minZ = z1;
}
ptr += n; // Skip n name records;
}
return name;
}
void ModelViewController::draw()
{
if (!valid())
{
gui->RFP_Browser->callback( &tree_callback, gui );
gui->RFP_Browser->redraw();
glLoadIdentity();
glViewport (0, 0, w(),h()); // Reset The Current Viewport
glMatrixMode (GL_PROJECTION); // Select The Projection Matrix
glLoadIdentity (); // Reset The Projection Matrix
gluPerspective (45.0f, (float)w()/(float)h(),1.0f, 1000000.0f); // Calculate The Aspect Ratio Of The Window
glMatrixMode (GL_MODELVIEW); // Select The Modelview Matrix
glLoadIdentity (); // Reset The Modelview Matrix
ArcBall->setBounds((GLfloat)w(), (GLfloat)h()); //*NEW* Update mouse bounds for arcball
glEnable(GL_LIGHTING);
for(int i=0;i<4;i++)
{
lights[i].Init((GLenum)(GL_LIGHT0+i));
lights[i].SetAmbient(0.2f, 0.2f, 0.2f, 1.0f);
lights[i].SetDiffuse(1.0f, 1.0f, 1.0f, 1.0f);
lights[i].SetSpecular(1.0f, 1.0f, 1.0f, 1.0f);
lights[i].Off();
}
lights[0].SetLocation(-100, 100, 200, 0);
lights[1].SetLocation(100, 100, 200, 0);
lights[2].SetLocation(100, -100, 200, 0);
lights[3].SetLocation(100, -100, 200, 0);
lights[0].On();
lights[3].On();
// enable lighting
glDisable ( GL_LIGHTING);
glDepthFunc (GL_LEQUAL); // The Type Of Depth Testing (Less Or Equal)
glEnable (GL_DEPTH_TEST); // Enable Depth Testing
glHint (GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); // Set Perspective Calculations To Most Accurate
quadratic=gluNewQuadric(); // Create A Pointer To The Quadric Object
gluQuadricNormals(quadratic, GLU_SMOOTH); // Create Smooth Normals
gluQuadricTexture(quadratic, GL_TRUE); // Create Texture Coords
}
// glEnable(GL_BLEND);
// glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // Clear Screen And Depth Buffer
glLoadIdentity(); // Reset The Current Modelview Matrix
glTranslatef(0.0f,0.0f,-zoom*2); // Move Left 1.5 Units And Into The Screen 6.0
glMultMatrixf(Transform.M); // NEW: Apply Dynamic Transform
CenterView();
glPushMatrix(); // NEW: Prepare Dynamic Transform
glColor3f(0.75f,0.75f,1.0f);
/*--------------- Draw Grid and Axis ---------------*/
DrawGridAndAxis();
/*--------------- Draw models ------------------*/
glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, 1);
Flu_Tree_Browser::Node *node = gui->RFP_Browser->get_selected( 1 );
ProcessControl.Draw(node);
/*--------------- Exit -----------------*/
glPopMatrix(); // NEW: Unapply Dynamic Transform
glFlush(); // Flush The GL Rendering Pipeline
// swap_buffers();
}
