📄 colorcubeview.cpp
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// ColorCubeView.cpp : implementation of the CColorCubeView class
//
#include "stdafx.h"
#include "ColorCube.h"
#include "ColorCubeDoc.h"
#include "ColorCubeView.h"
//add down
#include "gl\gl.h"
#include "gl\glu.h"
#include "gl\glaux.h"
//add up
//add down 函数声明
void DrawColorBox(void);
//add up函数声明
//add down定义立方体顶点
static GLfloat p1[]={0.5,-0.5,-0.5},
p2[]={0.5,0.5,-0.5},
p3[]={0.5,0.5,0.5},
p4[]={0.5,-0.5,0.5},
p5[]={-0.5,-0.5,0.5},
p6[]={-0.5,0.5,0.5},
p7[]={-0.5,0.5,-0.5},
p8[]={-0.5,-0.5,-0.5};
//add up定义立方体顶点
//add down定义法矢量顶点
static GLfloat m1[]={1.0,0.0,0.0},
m2[]={-1.0,0.0,0.0},
m3[]={0.0,1.0,0.0},
m4[]={0.0,-1.0,0.0},
m5[]={0.0,0.0,1.0},
m6[]={0.0,0.0,-1.0};
//add up定义法矢量顶点
//add down定义颜色值
static GLfloat c1[]={0.0,0.0,1.0},
c2[]={0.0,1.0,1.0},
c3[]={1.0,1.0,1.0},
c4[]={1.0,0.0,1.0},
c5[]={1.0,0.0,0.0},
c6[]={1.0,1.0,0.0},
c7[]={0.0,1.0,0.0},
c8[]={1.0,1.0,1.0};
//add down定义颜色值
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CColorCubeView
IMPLEMENT_DYNCREATE(CColorCubeView, CView)
BEGIN_MESSAGE_MAP(CColorCubeView, CView)
//{{AFX_MSG_MAP(CColorCubeView)
ON_WM_CREATE()
ON_WM_DESTROY()
ON_WM_ERASEBKGND()
ON_WM_SIZE()
//}}AFX_MSG_MAP
// Standard printing commands
ON_COMMAND(ID_FILE_PRINT, CView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_DIRECT, CView::OnFilePrint)
ON_COMMAND(ID_FILE_PRINT_PREVIEW, CView::OnFilePrintPreview)
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CColorCubeView construction/destruction
CColorCubeView::CColorCubeView()
{
//add down
m_pDC = NULL;
//add up
}
CColorCubeView::~CColorCubeView()
{
}
BOOL CColorCubeView::PreCreateWindow(CREATESTRUCT& cs)
{
// TODO: Modify the Window class or styles here by modifying
// the CREATESTRUCT cs
//add down
cs.style |= WS_CLIPSIBLINGS | WS_CLIPCHILDREN;
//add up
return CView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CColorCubeView drawing
void CColorCubeView::OnDraw(CDC* pDC)
{
CColorCubeDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native data here
//add down
DrawScene();
//add up
}
/////////////////////////////////////////////////////////////////////////////
// CColorCubeView printing
BOOL CColorCubeView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CColorCubeView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add extra initialization before printing
}
void CColorCubeView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CColorCubeView diagnostics
#ifdef _DEBUG
void CColorCubeView::AssertValid() const
{
CView::AssertValid();
}
void CColorCubeView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
CColorCubeDoc* CColorCubeView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CColorCubeDoc)));
return (CColorCubeDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CColorCubeView message handlers
int CColorCubeView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1)
return -1;
//add down
Init(); //初始化OpenGL
//add up
return 0;
}
void CColorCubeView::OnDestroy()
{
//add down
HGLRC hrc;
hrc = ::wglGetCurrentContext();
::wglMakeCurrent(NULL, NULL);
if (hrc)
::wglDeleteContext(hrc);
if (m_pDC)
delete m_pDC;
//add up
CView::OnDestroy();
}
BOOL CColorCubeView::OnEraseBkgnd(CDC* pDC)
{
return TRUE;
}
void CColorCubeView::OnSize(UINT nType, int cx, int cy)
{
CView::OnSize(nType, cx, cy);
//add down
int w=cx;
int h=cy;
//避免除数为0
if(h==0) h=1;
//设置视口与窗口匹配
glViewport(0, 0, (GLsizei) w, (GLsizei) h);
//重新设置坐标系统
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
//建立正交变换下的剪切体
if (w <= h)
glOrtho(-1.5, 1.5, -1.5*(GLfloat)h/(GLfloat)w,
1.5*(GLfloat)h/(GLfloat)w, -10.0, 10.0);
else
glOrtho(-1.5*(GLfloat)w/(GLfloat)h,
1.5*(GLfloat)w/(GLfloat)h,
-1.5, 1.5, -10.0, 10.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
//add up
}
//add down
void CColorCubeView::Init()
{
PIXELFORMATDESCRIPTOR pfd;
int n;
HGLRC hrc;
m_pDC = new CClientDC(this);
ASSERT(m_pDC != NULL);
if (!bSetupPixelFormat())
return;
n = ::GetPixelFormat(m_pDC->GetSafeHdc());
::DescribePixelFormat(m_pDC->GetSafeHdc(), n, sizeof(pfd), &pfd);
hrc = wglCreateContext(m_pDC->GetSafeHdc());
wglMakeCurrent(m_pDC->GetSafeHdc(), hrc);
glClearColor(1.0, 1.0, 1.0, 0.0);
//定义光照
GLfloat light_ambient[]={0.3,0.2,0.5};
GLfloat light_diffuse[]={1.0,1.0,1.0};
GLfloat light_position[]={2.0,2.0,2.0,1.0};
GLfloat light1_ambient[]={0.3,0.3,0.2};
GLfloat light1_diffuse[]={1.0,1.0,1.0};
GLfloat light1_position[]={-2.0,-2.0,-2.0,1.0};
glLightfv(GL_LIGHT0,GL_AMBIENT,light_ambient);
glLightfv(GL_LIGHT0,GL_DIFFUSE,light_diffuse);
glLightfv(GL_LIGHT0,GL_POSITION,light_position);
glLightfv(GL_LIGHT1,GL_AMBIENT,light1_ambient);
glLightfv(GL_LIGHT1,GL_DIFFUSE,light1_diffuse);
glLightfv(GL_LIGHT1,GL_POSITION,light1_position);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHT1);
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
glColorMaterial(GL_FRONT_AND_BACK,GL_DIFFUSE);
glEnable(GL_COLOR_MATERIAL);
}
BOOL CColorCubeView::bSetupPixelFormat()
{
static PIXELFORMATDESCRIPTOR pfd =
{
sizeof(PIXELFORMATDESCRIPTOR), // size of this pfd
1, // version number
PFD_DRAW_TO_WINDOW | // support window
PFD_SUPPORT_OPENGL | // support OpenGL
PFD_DOUBLEBUFFER, // double buffered
PFD_TYPE_RGBA, // RGBA type
24, // 24-bit color depth
0, 0, 0, 0, 0, 0, // color bits ignored
0, // no alpha buffer
0, // shift bit ignored
0, // no accumulation buffer
0, 0, 0, 0, // accum bits ignored
32, // 32-bit z-buffer
0, // no stencil buffer
0, // no auxiliary buffer
PFD_MAIN_PLANE, // main layer
0, // reserved
0, 0, 0 // layer masks ignored
};
int pixelformat;
if ( (pixelformat = ChoosePixelFormat(m_pDC->GetSafeHdc(), &pfd)) == 0 )
{
MessageBox("ChoosePixelFormat failed");
return FALSE;
}
if (SetPixelFormat(m_pDC->GetSafeHdc(), pixelformat, &pfd) == FALSE)
{
MessageBox("SetPixelFormat failed");
return FALSE;
}
return TRUE;
}
void CColorCubeView::DrawScene(void)
{
//清除颜色缓冲区和深度缓冲区
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix ();
glRotatef(45.0, 0.0, 1.0, 0.0);
glRotatef(315.0, 0.0, 0.0, 1.0);
DrawColorBox();
glPopMatrix ();
glFinish();
SwapBuffers(wglGetCurrentDC());
}
void DrawColorBox(void)
{
glBegin(GL_QUADS);
glColor3fv(c1);
glNormal3fv(m1);
glVertex3fv(p1);
glColor3fv(c2);
glVertex3fv(p2);
glColor3fv(c3);
glVertex3fv(p3);
glColor3fv(c4);
glVertex3fv(p4);
glColor3fv(c5);
glNormal3fv(m5);
glVertex3fv(p5);
glColor3fv(c6);
glVertex3fv(p6);
glColor3fv(c7);
glVertex3fv(p7);
glColor3fv(c8);
glVertex3fv(p8);
glColor3fv(c5);
glNormal3fv(m3);
glVertex3fv(p5);
glColor3fv(c6);
glVertex3fv(p6);
glColor3fv(c3);
glVertex3fv(p3);
glColor3fv(c4);
glVertex3fv(p4);
glColor3fv(c1);
glNormal3fv(m4);
glVertex3fv(p1);
glColor3fv(c2);
glVertex3fv(p2);
glColor3fv(c7);
glVertex3fv(p7);
glColor3fv(c8);
glVertex3fv(p8);
glColor3fv(c2);
glNormal3fv(m5);
glVertex3fv(p2);
glColor3fv(c3);
glVertex3fv(p3);
glColor3fv(c6);
glVertex3fv(p6);
glColor3fv(c7);
glVertex3fv(p7);
glColor3fv(c1);
glNormal3fv(m6);
glVertex3fv(p1);
glColor3fv(c4);
glVertex3fv(p4);
glColor3fv(c5);
glVertex3fv(p5);
glColor3fv(c8);
glEnd();
}
//add up
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