mediaright.cpp

绘制LCD的RGB和喷墨打印机的 CMYK到CIELab的三维彩色视图

// MediaRight.cpp : implementation file
//

#include "stdafx.h"
#include "Media.h"
#include "MediaRight.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CMediaRight

IMPLEMENT_DYNCREATE(CMediaRight, CView)

CMediaRight::CMediaRight()
{
    m_x = 0;
    m_y = 0;
    m_z = 0;
    IsRotate = FALSE;
}

CMediaRight::~CMediaRight()
{
}


BEGIN_MESSAGE_MAP(CMediaRight, CView)
	//{{AFX_MSG_MAP(CMediaRight)
	ON_WM_CREATE()
	ON_WM_DESTROY()
	ON_WM_SIZE()
	ON_WM_LBUTTONUP()
	ON_WM_MOUSEMOVE()
	ON_WM_LBUTTONDOWN()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CMediaRight drawing

void CMediaRight::OnDraw(CDC* pDC)
{
	CDocument* pDoc = GetDocument();
	// TODO: add draw code here
   	ASSERT_VALID(pDoc);
	Drawscene();
	pDC->SetTextColor(RGB(0,0,255));
	CString str = "LCD的RGB->Lab三维彩色视图";
	pDC->TextOut(15,15,str);
}

/////////////////////////////////////////////////////////////////////////////
// CMediaRight diagnostics

#ifdef _DEBUG
void CMediaRight::AssertValid() const
{
	CView::AssertValid();
}

void CMediaRight::Dump(CDumpContext& dc) const
{
	CView::Dump(dc);
}
#endif //_DEBUG

/////////////////////////////////////////////////////////////////////////////
// CMediaRight message handlers

int CMediaRight::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
	if (CView::OnCreate(lpCreateStruct) == -1)
		return -1;
	
	// TODO: Add your specialized creation code here
	 m_pDC = new CClientDC(this);
        ASSERT(m_pDC!=NULL);
	
    static PIXELFORMATDESCRIPTOR pfd=
    {
        sizeof(PIXELFORMATDESCRIPTOR),        // pfd结构的大小 
	    1,                                    // 版本号 
	    PFD_DRAW_TO_WINDOW|                   // 支持在窗口中绘图
	    PFD_SUPPORT_OPENGL|					  // 支持 OpenGL 
	    PFD_DOUBLEBUFFER,                     // 双缓存模式 
	    PFD_TYPE_RGBA,                        // RGBA 颜色模式 
	    24,                                   // 24 位颜色深度 
	    0,0,0,0,0,0,                          // 忽略颜色位 
	    0,                                    // 没有非透明度缓存 
	    0,                                    // 忽略移位位 
	    0,                                    // 无累加缓存 
	    0,0,0,0,                              // 忽略累加位 
 	    32,                                   // 32 位深度缓存     
	    0,                                    // 无模板缓存 
	    0,                                    // 无辅助缓存 
	    PFD_MAIN_PLANE,                       // 主层 
	    0,                                    // 保留 
	    0,0,0                                 // 忽略层,可见性和损毁掩模 

    };

    int pixelformat;
	int n;

	if ((pixelformat=ChoosePixelFormat(m_pDC->GetSafeHdc(),&pfd))==0)
    {
      MessageBox("ChoosePixelformat failed");    //选择像素格式失败
      return FALSE;
    }

    //设置像素格式
    if (SetPixelFormat(m_pDC->GetSafeHdc(),pixelformat,&pfd)==FALSE)
    {
      MessageBox("SetPixelFormat failed");   //设置像素格式失败
      return FALSE;
    }

	n=::GetPixelFormat(m_pDC->GetSafeHdc());
	::DescribePixelFormat(m_pDC->GetSafeHdc(),n,sizeof(pfd),&pfd);

	m_hRC = wglCreateContext(m_pDC->GetSafeHdc());
	wglMakeCurrent(m_pDC->GetSafeHdc(), m_hRC);

   // GetmyLAB();
//	SetPointColor();
	GetmyLAB1();
	SetPointColor1();

	return 0;
}

void CMediaRight::OnDestroy() 
{
	CView::OnDestroy();
	
	// TODO: Add your message handler code here
	if(wglGetCurrentContext() != NULL)
	{
		//make the rendering context not current 
		//wglMakeCurrent(NULL, NULL)来消除当前RC。
		wglMakeCurrent(NULL,NULL);
	}
	if(m_hRC != NULL)
	{
		//通过wglDeleteContext来删除RC
		wglDeleteContext(m_hRC);
		m_hRC = NULL;
	}

	if ( m_pDC )				//清空删除当前渲染绘制环境
	{
		delete m_pDC;
	}
}

void CMediaRight::OnSize(UINT nType, int cx, int cy) 
{
	CView::OnSize(nType, cx, cy);
	
	// TODO: Add your message handler code here
	if(m_hRC)
		wglMakeCurrent(m_pDC->GetSafeHdc(), m_hRC);
	else
		return;

	glViewport(0,0,cx,cy);
	//	设置变换模式为投影变换
	glMatrixMode(GL_PROJECTION);
	//	初始化投影变换矩阵
	glLoadIdentity();
	//	根据窗口大小设置调整正射投影矩阵
	if(cx<=cy)
		glOrtho(-4.0,4.0,-4.0*(GLfloat)cy/(GLfloat)cx,
			4.0*(GLfloat)cy/(GLfloat)cx,-2.0,2.0);
	else
		glOrtho(-4.0*(GLfloat)cx/(GLfloat)cy,
			4.0*(GLfloat)cx/(GLfloat)cy,-4.0,4.0,-2.0,2.0);
	//	设置变换模式为模型变换
	glMatrixMode(GL_MODELVIEW);
	//	初始化模型变换矩阵
	glLoadIdentity();
}

void CMediaRight::Drawscene()
{
if(m_hRC)
		wglMakeCurrent(m_pDC->GetSafeHdc(), m_hRC);
	else
		return;
    glRotated(m_x,1,0,0);
    glRotated(m_y,0,1,0);
    glRotated(m_z,0,1,1);

    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);			//设置背景颜色为黑色不透明
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);		//清颜色缓存与深度缓存	

	    glLineWidth(2.0);

	/*	glBegin(GL_LINES);
		
        glColor3f( 0.0, 0.0, 0.0);    // L
		glVertex3f(0.0, 0.0, 0.0);
		glColor3f( 1.0, 1.0, 1.0);
		glVertex3f(4.0, 0.0, 0.0);

        glColor3f( 0.0, 1.0, 0.0);    //a
		glVertex3f(0.0, -4.0, 0.0);
		glColor3f( 1.0, 0.0, 0.0);
		glVertex3f(0.0, 4.0, 0.0);
	
		glColor3f( 0.0, 0.0, 1.0);    // b
		glVertex3f(0.0, 0.0, -4.0);
		glColor3f( 1.0, 1.0, 0.0);
		glVertex3f(0.0, 0.0, 4.0);*/
	 glBegin(GL_LINES);//画坐标系，由三条线段组成     
     glColor3f(1,0,0);     
    glVertex3f(0,0,0);     
    glVertex3f(4,0,0);//R坐标(+a)     
     glColor3f(0,1,0);     
    glVertex3f(0,0,0);     
    glVertex3f(-4,0,0);//G坐标(-a)  
	 glColor3f(1,1,1);     
    glVertex3f(0,-4,0);     
    glVertex3f(0,4,0);//L坐标     
     glColor3f(0,0,1);     
    glVertex3f(0,0,0);     
    glVertex3f(0,0,-4);//B坐标(-b)
	 glColor3f(1,1,0);     
    glVertex3f(0,0,0);     
    glVertex3f(0,0,4);//Y坐标(+b)

     glEnd();

	int i;
//画LCD的LAB图


	glLineWidth(1.0);
	glPointSize(2.5);
	glPushMatrix();

	for (i = 0; i < 729; i ++)
	{
		glBegin(GL_POINTS);

			glColor3f(mColor1[i][0], mColor1[i][1], mColor1[i][2]);

			glVertex3f(mLAB1[i][1],mLAB1[i][0],mLAB1[i][2]);

		glEnd();
	}



	
	::SwapBuffers(m_pDC->GetSafeHdc());						//设置缓存

}

void CMediaRight::GetmyLAB1()
{
	int i, j;

	FILE *fp;

	fp=fopen("rlab.txt", "rb");

	if(!fp)
	{
		AfxMessageBox("读取LAB数据错误 !");
		exit(1);
	}

	for(i = 0; i < 729; i ++)
	{
		for (j = 0; j < 3; j ++)
		{
			fscanf(fp, "%f", &mLAB1[i][j]);
			mLAB1[i][j] = mLAB1[i][j]/40.0f;  //使坐标值能在坐标轴所给范围内（最大范围为4）显示，每个值除以40；
			
		}
	}
    
	fclose(fp);
}

void CMediaRight::SetPointColor1()
{
		int i, j;

	FILE *fp;

	fp=fopen("RGB.txt", "rb");

	if(!fp)
	{
		AfxMessageBox(" 读取RGB数据错误 !");
		exit(1);
	}

	for(i = 0; i < 729; i ++)
	{
		for (j = 0; j < 3; j ++)
		{    
			fscanf(fp, "%f", &mColor1[i][j]);
		    mColor1[i][j] = mColor1[i][j]/255;
		}
	}
    
	fclose(fp);
}

void CMediaRight::OnLButtonUp(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	IsRotate = FALSE;
	CView::OnLButtonUp(nFlags, point);
}



void CMediaRight::OnMouseMove(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
	if(IsRotate == TRUE)
	{
	m_x = point.x;
    m_y = point.y;
    m_z = point.x+point.y;
	Invalidate(FALSE);
	}
	CView::OnMouseMove(nFlags, point);
}

void CMediaRight::OnLButtonDown(UINT nFlags, CPoint point) 
{
	// TODO: Add your message handler code here and/or call default
		IsRotate = TRUE;
	CView::OnLButtonDown(nFlags, point);
}