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| unit Unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
OpenGL, ExtCtrls, Spin, StdCtrls;
type
TForm1 = class(TForm)
procedure FormCreate(Sender: TObject);
procedure FormResize(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure FormKeyPress(Sender: TObject; var Key: Char);
private
DC : HDC;
hrc : HGLRC;
Angle, AngleX, AngleY, AngleZ: GLfloat;
procedure DrawScene;
procedure InitializeRC;
procedure SetDCPixelFormat;
protected
procedure WMPaint(var Msg: TWMPaint); message WM_PAINT;
end;
var
Form1: TForm;
ch, c, i: integer;
s: string;
ShowHelp: boolean=true;
implementation
{$R *.DFM}
const
MaterialColor: Array [0..3] of GLfloat = (0.5, 0.0, 1.0, 1.0);
{=======================================================================
Ïåðåðèñîâêà îêíà}
procedure TForm1.InitializeRC;
begin
glEnable(GL_DEPTH_TEST); // ðàçðåøàåì òåñò ãëóáèíû
glEnable(GL_LIGHTING); // ðàçðåøàåì ðàáîòó ñ îñâåùåííîñòüþ
glEnable(GL_LIGHT0); // âêëþ÷àåì èñòî÷íèê ñâåòà 0
end;
procedure TForm1.DrawScene;
begin
// î÷èñòêà áóôåðà öâåòà è áóôåðà ãëóáèíû
glClear(GL_COLOR_BUFFER_BIT or GL_DEPTH_BUFFER_BIT);
// òðåõìåðíîñòü
glMatrixMode(GL_MODELVIEW);
glLoadIdentity;
glTranslatef(0.0, 0.0, -8.0); // âëåâî/âïðàâî, ââåðõ/âíèç, íàçàä/âïåðåä
glRotatef(AngleX, 1.0, 0.0, 0.0); // ïîâîðîò íà óãîë X
glRotatef(AngleY, 0.0, 1.0, 0.0); // ïîâîðîò íà óãîë Y
glRotatef(AngleZ, 0.0, 0.0, 1.0); // ïîâîðîò íà óãîë Z
// Øåñòü ñòîðîí êóáà
glBegin(GL_POLYGON);
glNormal3f(0.0, 0.0, 1.0);
glVertex3f(1.0, 1.0, 1.0);
glVertex3f(-1.0, 1.0, 1.0);
glVertex3f(-1.0, -1.0, 1.0);
glVertex3f(1.0, -1.0, 1.0);
glEnd;
glBegin(GL_POLYGON);
glNormal3f(0.0, 0.0, -1.0);
glVertex3f(1.0, 1.0, -1.0);
glVertex3f(1.0, -1.0, -1.0);
glVertex3f(-1.0, -1.0, -1.0);
glVertex3f(-1.0, 1.0, -1.0);
glEnd;
glBegin(GL_POLYGON);
glNormal3f(-1.0, 0.0, 0.0);
glVertex3f(-1.0, 1.0, 1.0);
glVertex3f(-1.0, 1.0, -1.0);
glVertex3f(-1.0, -1.0, -1.0);
glVertex3f(-1.0, -1.0, 1.0);
glEnd;
glBegin(GL_POLYGON);
glNormal3f(1.0, 0.0, 0.0);
glVertex3f(1.0, 1.0, 1.0);
glVertex3f(1.0, -1.0, 1.0);
glVertex3f(1.0, -1.0, -1.0);
glVertex3f(1.0, 1.0, -1.0);
glEnd;
glBegin(GL_POLYGON);
glNormal3f(0.0, 1.0, 0.0);
glVertex3f(-1.0, 1.0, -1.0);
glVertex3f(-1.0, 1.0, 1.0);
glVertex3f(1.0, 1.0, 1.0);
glVertex3f(1.0, 1.0, -1.0);
glEnd;
glBegin(GL_POLYGON);
glNormal3f(0.0, -1.0, 0.0);
glVertex3f(-1.0, -1.0, -1.0);
glVertex3f(1.0, -1.0, -1.0);
glVertex3f(1.0, -1.0, 1.0);
glVertex3f(-1.0, -1.0, 1.0);
glEnd;
SwapBuffers(DC); // êîíåö ðàáîòû
end;
{=======================================================================
Ñîçäàíèå ôîðìû}
procedure TForm1.FormCreate(Sender: TObject);
begin
Angle:=0;
AngleX:=30;
AngleY:=-30;
AngleZ:=0;
c:=1;
DC:=GetDC(Handle);
SetDCPixelFormat;
hrc:=wglCreateContext(DC);
wglMakeCurrent(DC, hrc);
InitializeRC;
// ñâîéñòâà ìàòåðèàëà - ëèöåâûå ñòîðîíû - ðàññåÿííûé
// öâåò ìàòåðèàëà è äèôôóçíîå îòðàæåíèå ìàòåðèàëà - çíà÷åíèÿ èç ìàññèâà
glMaterialfv(GL_FRONT,GL_AMBIENT_AND_DIFFUSE,@MaterialColor);
end;
// Óñòàíîâêà ôîðìàòà ïèêñåëåé
procedure TForm1.SetDCPixelFormat;
var
nPixelFormat: integer;
pfd: TPixelFormatDescriptor;
begin
FillChar(pfd, SizeOf(pfd), 0);
with pfd do
begin
nSize :=sizeof(pfd);
nVersion:=1;
dwFlags :=PFD_DRAW_TO_WINDOW or PFD_SUPPORT_OPENGL or
PFD_DOUBLEBUFFER;
iPixelType:=PFD_TYPE_RGBA;
cColorBits:=24; // 24
cDepthBits:=32; // 32
iLayerType:= PFD_MAIN_PLANE;
end;
nPixelFormat := ChoosePixelFormat(DC, @pfd);
SetPixelFormat(DC, nPixelFormat, @pfd);
end;
// Èçìåíåíèå ðàçìåðîâ îêíà
procedure TForm1.FormResize(Sender: TObject);
begin
glMatrixMode(GL_PROJECTION);
glLoadIdentity;
gluPerspective(30.0, Width/Height, 1.0, 10.0);
glViewport(0, 0, Width, Height);
glMatrixMode(GL_MODELVIEW);
InvalidateRect(Handle, nil, False);
end;
// Îáðàáîòêà ñîîáùåíèÿ WM_PAINT, ðèñîâàíèå îêíà
procedure TForm1.WMPaint(var Msg: TWMPaint);
var
ps: TPaintStruct;
begin
BeginPaint(Handle, ps);
DrawScene;
EndPaint(Handle, ps);
end;
// Êîíåö ðàáîòû ïðîãðàììû
procedure TForm1.FormDestroy(Sender: TObject);
begin
wglMakeCurrent(0, 0);
wglDeleteContext(hrc);
ReleaseDC(Handle, DC);
end;
procedure TForm1.FormKeyPress(Sender: TObject; var Key: Char);
begin
if ord(key)=27 then Application.Terminate; // Esc
FormResize(nil);
end;
end. |
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