?? tin3dview.cpp
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// CTin3DView.cpp : implementation of the CTin3DView class
//
#include "stdafx.h"
#include "Tin3D.h"
#include "Tin3DDoc.h"
#include "Tin3DView.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CTin3DView
IMPLEMENT_DYNCREATE(CTin3DView, CView)
BEGIN_MESSAGE_MAP(CTin3DView, CView)
//{{AFX_MSG_MAP(CTin3DView)
ON_WM_CREATE()
ON_WM_DESTROY()
ON_WM_SIZE()
ON_WM_PAINT()
ON_WM_LBUTTONDOWN()
ON_COMMAND(ID_TX, OnTx)
ON_COMMAND(ID_POINT, OnPoint)
//}}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()
/////////////////////////////////////////////////////////////////////////////
// CTin3DView construction/destruction
CTin3DView::CTin3DView()
{
m_Rotateangle=0;
MAX=624;
IsOpen=0;
n=0;
}
CTin3DView::~CTin3DView()
{
}
BOOL CTin3DView::PreCreateWindow(CREATESTRUCT& cs)
{
cs.style |= (WS_CLIPCHILDREN | WS_CLIPSIBLINGS);
return CView::PreCreateWindow(cs);
}
/////////////////////////////////////////////////////////////////////////////
// CTin3DView drawing
void CTin3DView::OnDraw(CDC* pDC)
{
CTin3DDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
CClientDC dc(this);
// TODO: add draw code for native data here
}
/////////////////////////////////////////////////////////////////////////////
// CTin3DView printing
BOOL CTin3DView::OnPreparePrinting(CPrintInfo* pInfo)
{
// default preparation
return DoPreparePrinting(pInfo);
}
void CTin3DView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
{
// TODO: add cleanup after printing
}
/////////////////////////////////////////////////////////////////////////////
// CTin3DView diagnostics
#ifdef _DEBUG
void CTin3DView::AssertValid() const
{
CView::AssertValid();
}
void CTin3DView::Dump(CDumpContext& dc) const
{
CView::Dump(dc);
}
CTin3DDoc* CTin3DView::GetDocument() // non-debug version is inline
{
ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CTin3DDoc)));
return (CTin3DDoc*)m_pDocument;
}
#endif //_DEBUG
/////////////////////////////////////////////////////////////////////////////
// CTin3DView message handlers
void CTin3DView::TriDelaunay(Vertex p1,Vertex p2)
{
CClientDC dc(this);
Vertex ThirdPoint;
ThirdPoint.x=(GetThirdPoint(p1,p2)).x;
ThirdPoint.y=(GetThirdPoint(p1,p2)).y;
ThirdPoint.z=(GetThirdPoint(p1,p2)).z;
if (ThirdPoint.x!=0 && ThirdPoint.y!=0)
{
glBegin(GL_LINE_LOOP);
glVertex3f(p1.x,p1.y,p1.z);
glVertex3f(p2.x,p2.y,p2.z);
glVertex3f(ThirdPoint.x,ThirdPoint.y,ThirdPoint.z);
glEnd();
Edge l1;
l1.p1.x=p1.x;
l1.p1.y=p1.y;
l1.p1.z=p1.z;
l1.p2.x=p2.x;
l1.p2.y=p2.y;
l1.p2.z=p2.z;
m_edges.push_back(l1);
Triangle triangle;
triangle.ptr[0].x=p1.x;
triangle.ptr[0].y=p1.y;
triangle.ptr[0].z=p1.z;
triangle.ptr[1].x=p2.x;
triangle.ptr[1].y=p2.y;
triangle.ptr[1].z=p2.z;
triangle.ptr[2].x=ThirdPoint.x;
triangle.ptr[2].y=ThirdPoint.y;
triangle.ptr[2].z=ThirdPoint.z;
m_triangles.push_back(triangle);
}
else
return;//儲存已構成的直線
TriDelaunay(p1,ThirdPoint) ;
TriDelaunay(ThirdPoint,p2) ; //標記已構三角形的邊，對尚未構三角形的邊用算法進行遞歸調用
}
void CTin3DView::initial()
{
int i;
for (i=0;i<m_edges.size();i++)
{
m_edges[i].no=i+1;
m_edges[i].length=1.0;
m_edges[i].usetimes=0;
m_edges[i].p1.x=0;
m_edges[i].p1.y=0;
m_edges[i].p1.z=0;
m_edges[i].p2.x=0;
m_edges[i].p2.y=0;
m_edges[i].p2.z=0;
}
/////////////////////////////////////////////////////////////
for (i=0;i<m_triangles.size();i++)
{
m_triangles[i].no=i+1;
m_triangles[i].edgeno[0]=-1;
m_triangles[i].edgeno[1]=-1;
m_triangles[i].edgeno[2]=-1;
m_triangles[i].Normal[0]=-1;
m_triangles[i].Normal[1]=-1;
m_triangles[i].Normal[2]=-1;
}
}
Vertex CTin3DView::GetThirdPoint(Vertex p1, Vertex p2)
{
/*-------------判定邊是否被標記-------------------*/
bool sign=true;
Edge edge;
edge.p1.x=p1.x;
edge.p1.y=p1.y;
edge.p1.z=p1.z;
edge.p2.x=p2.x;
edge.p2.y=p2.y;
edge.p2.z=p2.z;
for(int i=0;i<m_edges.size();i++)
{
if(edge.p1.x==m_edges[i].p1.x &&
edge.p1.y==m_edges[i].p1.y&&
edge.p1.z==m_edges[i].p1.z&&
edge.p2.x==m_edges[i].p2.x&&
edge.p2.y==m_edges[i].p2.y&&
edge.p2.z==m_edges[i].p2.z)
sign=false;
}
double temp=1; //采用最大張角，即最小余弦的判別準則
int j=0;
for( i=0;i<MAX;i++)
{
double equation;
equation = ((p1.y - p2.y) * (m_vertex[i].x - p2.x))
- ((m_vertex[i].y - p2.y) * (p1.x - p2.x));//確定基線的方向
if(equation<=0) continue; //沿基線>0固定方向
double a=sqrt(pow(p1.x-m_vertex[i].x,2)+pow(p1.y-m_vertex[i].y,2));
double b=sqrt(pow(p2.x-m_vertex[i].x,2)+pow(p2.y-m_vertex[i].y,2));
double c=sqrt(pow(p1.x-p2.x,2)+pow(p1.y-p2.y,2));
double d=(a*a+b*b-c*c)/(2*a*b);
if(d<temp && equation>0 && sign)
{
temp=d;
j=i;
}
}
if(j!=0)
return m_vertex[j];
else
{
Vertex temp_vertex;
temp_vertex.x=0;
temp_vertex.y=0;
temp_vertex.z=0;
return temp_vertex;
}
}
int CTin3DView::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CView::OnCreate(lpCreateStruct) == -1) return -1;
HWND hWnd = GetSafeHwnd();
HDC hDC = ::GetDC(hWnd);
if (SetWindowPixelFormat(hDC)==FALSE) return 0;
if (CreateViewGLContext(hDC)==FALSE) return 0;
return 0;
}
BOOL CTin3DView::SetWindowPixelFormat(HDC hDC)
{
PIXELFORMATDESCRIPTOR pixelDesc;
pixelDesc.nSize = sizeof(PIXELFORMATDESCRIPTOR); pixelDesc.nVersion = 1;
pixelDesc.dwFlags = PFD_DRAW_TO_WINDOW | PFD_DRAW_TO_BITMAP | PFD_SUPPORT_OPENGL | PFD_SUPPORT_GDI | PFD_STEREO_DONTCARE; pixelDesc.iPixelType = PFD_TYPE_RGBA; pixelDesc.cColorBits = 32;
pixelDesc.cRedBits = 8;
pixelDesc.cRedShift = 16;
pixelDesc.cGreenBits = 8;
pixelDesc.cGreenShift = 8;
pixelDesc.cBlueBits = 8;
pixelDesc.cBlueShift = 0;
pixelDesc.cAlphaBits = 0;
pixelDesc.cAlphaShift = 0;
pixelDesc.cAccumBits = 64;
pixelDesc.cAccumRedBits = 16;
pixelDesc.cAccumGreenBits = 16;
pixelDesc.cAccumBlueBits = 16;
pixelDesc.cAccumAlphaBits = 0;
pixelDesc.cDepthBits = 32;
pixelDesc.cStencilBits = 8;
pixelDesc.cAuxBuffers = 0;
pixelDesc.iLayerType = PFD_MAIN_PLANE;
pixelDesc.bReserved = 0;
pixelDesc.dwLayerMask = 0;
pixelDesc.dwVisibleMask = 0;
pixelDesc.dwDamageMask = 0;
m_GLPixelIndex = ChoosePixelFormat( hDC, &pixelDesc);
if (m_GLPixelIndex==0) // Let's choose a default index.
{ m_GLPixelIndex = 1;
if (DescribePixelFormat(hDC, m_GLPixelIndex, sizeof(PIXELFORMATDESCRIPTOR),&pixelDesc)==0)
return FALSE;
}
if (SetPixelFormat( hDC, m_GLPixelIndex,&pixelDesc)==FALSE) return FALSE;
return TRUE;
}
BOOL CTin3DView::CreateViewGLContext(HDC hDC)
{
m_hGLContext = wglCreateContext(hDC);
if (m_hGLContext == NULL)
return FALSE;
if (wglMakeCurrent(hDC, m_hGLContext)==FALSE) return FALSE;
return TRUE;
}
void CTin3DView::OnDestroy()
{
if(wglGetCurrentContext()!=NULL)
wglMakeCurrent(NULL, NULL) ;
if (m_hGLContext!=NULL)
{
wglDeleteContext(m_hGLContext);
m_hGLContext = NULL;
}
CView::OnDestroy();
}
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