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ada-git-code

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half_fov_max_rads := 0.5 * Self.Camera.FOVy * deg2rad;
Tan_of_half_fov_max_rads := Tan (half_fov_max_rads);
Self.Camera.near_plane_Height := Self.Camera.near_plane_Distance * Tan_of_half_fov_max_rads;
Self.Camera.near_plane_Width := Self.Camera.near_plane_Height * Self.Camera.Aspect;
Self.Camera.far_plane_Height := Self.Camera.far_plane_Distance * Tan_of_half_fov_max_rads;
Self.Camera.far_plane_Width := Self.Camera.far_plane_Height * Self.Camera.Aspect;
if Self.Camera.Aspect > 1.0 then -- x side angle broader than y side angle
half_fov_max_rads := Arctan (Self.Camera.Aspect * Tan_of_half_fov_max_rads);
end if;
Self.Camera.Clipper.max_dot_product := Sin (half_fov_max_rads);
end set_Size;
-- Procedures passed to GLUT:
-- Window_Resize, Keyboard, Motion, Menu, Mouse, Display
procedure Window_Resize (width, height : Integer) is
the_Window : constant GLUT.Windows.Window_view := current_Window;
begin
the_Window.all.forget_mouse := 5;
set_Size (the_Window.all, width, height);
Reset_for_3D (the_Window.all);
end Window_Resize;
procedure Menu (value : Integer) is
begin
case value is
when 1 => -- GLUT.GameModeString (Full_Screen_Mode);
GLUT.FullScreen;
-- res := GLUT.EnterGameMode;
GLUT.SetCursor (GLUT.CURSOR_NONE);
current_Window.all.forget_mouse := 10;
current_Window.all.full_screen := True;
when 2 => null; -- GLUT_exit;
when others => null;
end case;
end Menu;
pragma Unreferenced (Menu);
procedure Display_status (Self : in out Window;
sec : GLOBE_3D.Real) is
use G3D, G3D.REF;
light_info : String (1 .. 8);
begin
PushMatrix;
Disable (LIGHTING);
Disable (TEXTURE_2D);
Color (red => 0.7,
green => 0.7,
blue => 0.6);
GLUT_2D.Text_output ((1.0, 0.0, 0.0), " (x)", GLUT_2D.Times_Roman_24);
GLUT_2D.Text_output ((0.0, 1.0, 0.0), " (y)", GLUT_2D.Times_Roman_24);
GLUT_2D.Text_output ((0.0, 0.0, 1.0), " (z)", GLUT_2D.Times_Roman_24);
GLUT_2D.Text_output (0, 50, Self.main_size_x, Self.main_size_y,
"Eye : " & Coords (Self.Camera.Clipper.Eye_Position),
GLUT_2D.Helvetica_10);
GLUT_2D.Text_output (0, 60, Self.main_size_x, Self.main_size_y,
"View direction : " & Coords (Self.Camera.Clipper.view_direction),
GLUT_2D.Helvetica_10);
for i in light_info'Range loop
if Is_light_switched (i) then
light_info (i) := Character'Val (Character'Pos ('0') + i);
else
light_info (i) := 'x';
end if;
end loop;
GLUT_2D.Text_output (0, 70, Self.main_size_x, Self.main_size_y, "Lights : (" & light_info & ')', GLUT_2D.Helvetica_10);
if sec > 0.0 then
GLUT_2D.Text_output (0, 130, Self.main_size_x, Self.main_size_y, "FPS : " & Integer'Image (Integer (1.0 / sec)), GLUT_2D.Helvetica_10);
end if;
if Self.is_capturing_Video then
GLUT_2D.Text_output (0, 150, Self.main_size_x, Self.main_size_y, "*recording*", GLUT_2D.Helvetica_10);
end if;
PopMatrix;
end Display_status;
function Frames_per_second (Self : Window) return Float is (Float (1.0 / (Self.Average * 0.001)));