MYLODVIEW.CPP
上传用户:hjbgzhh
上传日期:2013-03-07
资源大小:295k
文件大小:19k
- // MyLODView.cpp : implementation of the CMyLODView class
- //
- #include "stdafx.h"
- #include "MyLOD.h"
- #include "MyLODDoc.h"
- #include "MyLODView.h"
- #include <math.h>
- #ifdef _DEBUG
- #define new DEBUG_NEW
- #undef THIS_FILE
- static char THIS_FILE[] = __FILE__;
- #endif
- CLandTex lt;
- int quadtree[QUAD_MAP * QUAD_MAP];
- int location[3];
- int lod_level=8;
- int *y; // 保存地形的高程数组
- COLOUR *colour_map; // 保存地形的颜色数值
- /////////////////////////////////////////////////////////////////////////////
- // CMyLODView
- IMPLEMENT_DYNCREATE(CMyLODView, CView)
- BEGIN_MESSAGE_MAP(CMyLODView, CView)
- //{{AFX_MSG_MAP(CMyLODView)
- ON_WM_CREATE()
- ON_WM_DESTROY()
- ON_WM_SIZE()
- ON_WM_TIMER()
- ON_WM_KEYDOWN()
- //}}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()
- /////////////////////////////////////////////////////////////////////////////
- // CMyLODView construction/destruction
- CMyLODView::CMyLODView()
- {
- // TODO: add construction code here
- bilinear_filtering = 1;
- wireframe_mode = -1;
- flying_mode = 1;
- detail_texture_mode = -1;
- mapX = 128, mapZ = 128;
- speed = 0.0; // 移动速度初始化
- timer = 0.0, wTimer = 0.0;
- }
- CMyLODView::~CMyLODView()
- {
- }
- BOOL CMyLODView::PreCreateWindow(CREATESTRUCT& cs)
- {
- // TODO: Modify the Window class or styles here by modifying
- // the CREATESTRUCT cs
- ////////////////////////////////////////////////////////////////
- //设置窗口类型
- cs.style |=WS_CLIPCHILDREN | WS_CLIPSIBLINGS;
- ////////////////////////////////////////////////////////////////
- return CView::PreCreateWindow(cs);
- }
- /////////////////////////////////////////////////////////////////////////////
- // CMyLODView drawing
- void CMyLODView::OnDraw(CDC* pDC)
- {
- CMyLODDoc* pDoc = GetDocument();
- ASSERT_VALID(pDoc);
- // TODO: add draw code for native data here
- //////////////////////////////////////////////////////////////////
- RenderScene(); //渲染场景
- //////////////////////////////////////////////////////////////////
- }
- /////////////////////////////////////////////////////////////////////////////
- // CMyLODView printing
- BOOL CMyLODView::OnPreparePrinting(CPrintInfo* pInfo)
- {
- // default preparation
- return DoPreparePrinting(pInfo);
- }
- void CMyLODView::OnBeginPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
- {
- // TODO: add extra initialization before printing
- }
- void CMyLODView::OnEndPrinting(CDC* /*pDC*/, CPrintInfo* /*pInfo*/)
- {
- // TODO: add cleanup after printing
- }
- /////////////////////////////////////////////////////////////////////////////
- // CMyLODView diagnostics
- #ifdef _DEBUG
- void CMyLODView::AssertValid() const
- {
- CView::AssertValid();
- }
- void CMyLODView::Dump(CDumpContext& dc) const
- {
- CView::Dump(dc);
- }
- CMyLODDoc* CMyLODView::GetDocument() // non-debug version is inline
- {
- ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMyLODDoc)));
- return (CMyLODDoc*)m_pDocument;
- }
- #endif //_DEBUG
- /////////////////////////////////////////////////////////////////////////////
- // CMyLODView message handlers
- int CMyLODView::OnCreate(LPCREATESTRUCT lpCreateStruct)
- {
- if (CView::OnCreate(lpCreateStruct) == -1)
- return -1;
-
- // TODO: Add your specialized creation code here
- //////////////////////////////////////////////////////////////////
- //初始化OpenGL和设置定时器
- m_pDC = new CClientDC(this);
- SetTimer(1, 20, NULL);
- InitializeOpenGL(m_pDC);
- //////////////////////////////////////////////////////////////////
- Init();
- return 0;
- }
- void CMyLODView::OnDestroy()
- {
- CView::OnDestroy();
-
- // TODO: Add your message handler code here
- /////////////////////////////////////////////////////////////////
- //删除调色板和渲染上下文、定时器
- ::wglMakeCurrent(0,0);
- ::wglDeleteContext( m_hRC);
- if (m_hPalette)
- DeleteObject(m_hPalette);
- if ( m_pDC )
- {
- delete m_pDC;
- }
- KillTimer(1);
- /////////////////////////////////////////////////////////////////
- delete[] y;
- delete[] colour_map;
- m_Bmpload.destroy_bmp(detail_texture);
- }
- void CMyLODView::OnSize(UINT nType, int cx, int cy)
- {
- CView::OnSize(nType, cx, cy);
-
- // TODO: Add your message handler code here
- /////////////////////////////////////////////////////////////////
- //添加窗口缩放时的图形变换函数
- glViewport(0,0,cx,cy);
- /////////////////////////////////////////////////////////////////
- winWidth=cx;
- winHeight=cy;
-
- }
- void CMyLODView::OnTimer(UINT nIDEvent)
- {
- // TODO: Add your message handler code here and/or call default
- /////////////////////////////////////////////////////////////////
- //添加定时器响应函数和场景更新函数
- Invalidate(FALSE);
- /////////////////////////////////////////////////////////////////
- update_world();
- CView::OnTimer(nIDEvent);
- }
- /////////////////////////////////////////////////////////////////////
- // 设置逻辑调色板
- //////////////////////////////////////////////////////////////////////
- void CMyLODView::SetLogicalPalette(void)
- {
- struct
- {
- WORD Version;
- WORD NumberOfEntries;
- PALETTEENTRY aEntries[256];
- } logicalPalette = { 0x300, 256 };
- BYTE reds[] = {0, 36, 72, 109, 145, 182, 218, 255};
- BYTE greens[] = {0, 36, 72, 109, 145, 182, 218, 255};
- BYTE blues[] = {0, 85, 170, 255};
- for (int colorNum=0; colorNum<256; ++colorNum)
- {
- logicalPalette.aEntries[colorNum].peRed =
- reds[colorNum & 0x07];
- logicalPalette.aEntries[colorNum].peGreen =
- greens[(colorNum >> 0x03) & 0x07];
- logicalPalette.aEntries[colorNum].peBlue =
- blues[(colorNum >> 0x06) & 0x03];
- logicalPalette.aEntries[colorNum].peFlags = 0;
- }
- m_hPalette = CreatePalette ((LOGPALETTE*)&logicalPalette);
- }
- //////////////////////////////////////////////////////////
- // 初始化openGL场景
- //////////////////////////////////////////////////////////
- BOOL CMyLODView::InitializeOpenGL(CDC* pDC)
- {
- m_pDC = pDC;
- SetupPixelFormat();
- //生成绘制描述表
- m_hRC = ::wglCreateContext(m_pDC->GetSafeHdc());
- //置当前绘制描述表
- ::wglMakeCurrent(m_pDC->GetSafeHdc(), m_hRC);
- return TRUE;
- }
- //////////////////////////////////////////////////////////
- // 设置像素格式
- //////////////////////////////////////////////////////////
- BOOL CMyLODView::SetupPixelFormat()
- {
- 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;
- pixelformat = ::ChoosePixelFormat(m_pDC->GetSafeHdc(), &pfd);//选择像素格式
- ::SetPixelFormat(m_pDC->GetSafeHdc(), pixelformat, &pfd); //设置像素格式
- if(pfd.dwFlags & PFD_NEED_PALETTE)
- SetLogicalPalette(); //设置逻辑调色板
- return TRUE;
- }
- //////////////////////////////////////////////////////////
- // 场景绘制与渲染
- //////////////////////////////////////////////////////////
- BOOL CMyLODView::RenderScene()
- {
- int i;
- int x, z;
- int aX, aZ;
- int r;
- float v1[3];
- float location_f[3];
-
- glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
- glViewport(0, 0, (GLsizei) winWidth, (GLsizei) winHeight);
- glMatrixMode(GL_PROJECTION);
- glLoadIdentity();
-
- gluPerspective(60.0, (GLfloat) winWidth/(GLfloat) winHeight, 1.0, ((M_SIZE + 4) * 2) << SHIFT);
-
- // 设置摄像机位置和观看的矢量
-
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
- gluLookAt (xpos, ypos, zpos, xpos+lookx, ypos+looky, zpos+lookz, 0.0, 1.0, 0.0);
-
- m_Lod.reset_quad_tree();
- m_Lod.setup_quadtree(128, 128, 128);
-
- if(wireframe_mode < 0) {
- glEnable(GL_TEXTURE_2D);
- }
- else {
- glColor3f(0.0, 0.0, 0.0);
- }
-
- m_Lod.draw(128, 128, 128, 0); // 地形的绘制
-
- if((wireframe_mode < 0) && (flying_mode < 0) && (detail_texture_mode > 0))
- {
- glBindTexture(GL_TEXTURE_2D, texName[20]);
- glColor4f(1.0, 1.0, 1.0, 1.0);
- glEnable(GL_BLEND);
- glDisable(GL_DEPTH_TEST);
- glBegin(GL_QUADS);
- location_f[0] = xpos / COMP;
- location_f[2] = zpos / COMP;
- aX = mapX - mapX%2;
- aZ = mapZ - mapZ%2;
- for(x=aX-16; x<aX+16; x+=2) {
- for(z=aZ-16; z<aZ+16; z+=2) {
- v1[0] = x;
- v1[2] = z;
-
- glColor4f(1.0, 1.0, 1.0, 0.5 - DISTANCE(v1, location_f)/20.0f);
- glTexCoord2f(0.0, 0.0);
- m_Lod.setVertex(x, z);
-
- v1[0] = x;
- v1[2] = z+2;
-
- glColor4f(1.0, 1.0, 1.0, 0.5 - DISTANCE(v1, location_f)/20.0f);
- glTexCoord2f(0.0, 1.0);
- m_Lod.setVertex(x, z+2);
-
- v1[0] = x+2;
- v1[2] = z+2;
-
- glColor4f(1.0, 1.0, 1.0, 0.5 - DISTANCE(v1, location_f)/20.0f);
- glTexCoord2f(1.0, 1.0);
- m_Lod.setVertex(x+2, z+2);
-
- v1[0] = x+2;
- v1[2] = z;
-
- glColor4f(1.0, 1.0, 1.0, 0.5 - DISTANCE(v1, location_f)/20.0f);
- glTexCoord2f(1.0, 0.0);
- m_Lod.setVertex(x+2, z);
- }
- }
-
- glEnd();
-
- glEnable(GL_DEPTH_TEST);
-
- glDisable(GL_BLEND);
- }
- r = M_SIZE << SHIFT;
-
- glDisable(GL_TEXTURE_2D);
-
- glBegin(GL_QUADS);
- for(i=0; i<256; i+=16) {
- glColor3f(0.12, 0.27, 0.7);
- glVertex3f(xpos + sin_t[(i + 16)&255] * r, (64 << SHIFT), zpos + cos_t[(i + 16)&255] * r);
-
- glColor3f(0.42, 0.57, 1.0);
- glVertex3f(xpos + sin_t[(i + 16)&255] * r, 0, zpos + cos_t[(i + 16)&255] * r);
-
- glColor3f(0.42, 0.57, 1.0);
- glVertex3f(xpos + sin_t[i] * r, 0, zpos + cos_t[i] * r);
-
- glColor3f(0.12, 0.27, 0.7);
- glVertex3f(xpos + sin_t[i] * r, (64 << SHIFT), zpos + cos_t[i] * r);
- }
-
- for(i=0; i<256; i+=16) {
- glColor3f(0.42, 0.57, 1.0);
- glVertex3f(xpos + sin_t[(i + 16)&255] * r, 0, zpos + cos_t[(i + 16)&255] * r);
-
- glColor3f(0.12, 0.27, 0.7);
- glVertex3f(xpos + sin_t[(i + 16)&255] * r, -(16 << SHIFT), zpos + cos_t[(i + 16)&255] * r);
-
- glColor3f(0.12, 0.27, 0.7);
- glVertex3f(xpos + sin_t[i] * r, -(16 << SHIFT), zpos + cos_t[i] * r);
-
- glColor3f(0.42, 0.57, 1.0);
- glVertex3f(xpos + sin_t[i] * r, 0, zpos + cos_t[i] * r);
- }
-
- glEnd();
- glFlush();
- ::SwapBuffers(m_pDC->GetSafeHdc()); //交互缓冲区
- return TRUE;
- }
- void CMyLODView::Init(void)
- {
- GLfloat fogColor[] = {0.12, 0.27, 0.7, 1.0};
- GLfloat lightDiffuse[] = {1.0, 0.75, 0.5, 1.0};
-
- glClearColor(0.12, 0.27, 0.7, 1.0);
-
- for(int i=0; i<256; i++) {
- sin_t[i] = sin((i/128.0) * PI);
- cos_t[i] = cos((i/128.0) * PI);
- }
-
- initTerrain(); // 初始化地形数据
-
- xpos = (118) * COMP;
- ypos = 10.0;
- zpos = (125) * COMP;
-
- lookx = (120.0) * COMP;
- looky = (0.0) * COMP;
- lookz = (120.0) * COMP;
-
- speed = 0;
-
- update_world();
-
- glFogi(GL_FOG_MODE, GL_LINEAR);
- glFogfv(GL_FOG_COLOR, fogColor);
- glFogf(GL_FOG_DENSITY, 1);
- glFogf(GL_FOG_START, (M_SIZE/2)*0.1*COMP);
- glFogf(GL_FOG_END, (M_SIZE/2)*0.5*COMP);
-
- glGenTextures(100, texName);
-
- srand(1111111);
- randomTerrain();
-
- srand((unsigned)time(NULL));
- detail_texture = m_Bmpload.load_bitmap("DETAIL.BMP");
- glBindTexture(GL_TEXTURE_2D, texName[20]);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB5, detail_texture->w, detail_texture->h, 0, GL_RGB, GL_UNSIGNED_BYTE, detail_texture->data);
-
- glLightfv(GL_LIGHT0, GL_DIFFUSE, lightDiffuse);
- glLightfv(GL_LIGHT0, GL_AMBIENT, lightDiffuse);
- glEnable(GL_NORMALIZE);
- glEnable(GL_LIGHT0);
-
- glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-
- glShadeModel(GL_SMOOTH);
- glDisable(GL_ALPHA_TEST);
- glDisable(GL_BLEND);
- glDisable(GL_CULL_FACE);
- glEnable(GL_DEPTH_TEST);
-
- glFrontFace(GL_CCW);
- glCullFace(GL_BACK);
- glEnable(GL_CULL_FACE);
-
- glEnable(GL_TEXTURE_2D);
-
- glEnable(GL_DITHER);
- m_Lod.m_bFlag=true;
- move(ROTATE, 2.6, 0);
- move(LOOKUP, -0.2, 0);
-
- }
- void CMyLODView::initTerrain(void)
- {
- y = new int[M_SIZE*M_SIZE];
- if(!y)
- {
- MessageBox("Unable to allocate memory for height map.","Error",MB_OK);
- }
- else
- {
- MessageBox("Succesfully allocated memory for height map.","OK",MB_OK);
- }
- colour_map = new COLOUR[M_SIZE*M_SIZE];
- if(!colour_map)
- {
- MessageBox("Unable to allocate memory for shadow map.","Error",MB_OK);
- }
- else
- {
- MessageBox("Succesfully allocated memory for shadow map.","OK",MB_OK);
- }
- }
- void CMyLODView::randomTerrain(void)
- {
- int x, z;
- int i, j;
- int bsize, csize;
- int rnd;
-
- for(i=0; i<(M_SIZE*M_SIZE); i++) {
- y[i] = 0;
- }
-
- bsize = M_SIZE;
- csize = M_SIZE/2;
-
- rnd = 256;
-
- while(csize > 0) {
- for(x=0; x<M_SIZE; x+=bsize) {
- for(z=0; z<M_SIZE; z+=bsize) {
- y[IX(x+csize, z+csize)] = f4(y[IX(x, z)], y[IX(x+bsize, z)], y[IX(x+bsize, z+bsize)], y[IX(x, z+bsize)]) + rand()%(rnd+1) - (rnd/2);
- }
- }
-
- for(x=0; x<M_SIZE; x+=bsize) {
- for(z=0; z<M_SIZE; z+=bsize) {
- y[IX(x+csize, z)] = f4(y[IX(x, z)],
- y[IX(x+bsize, z)],
- y[IX(x+csize, z+csize)],
- y[IX(x+csize, z-csize)]) + (rand()%(rnd+1) - (rnd/2));
- }
- }
-
- for(x=0; x<M_SIZE; x+=bsize) {
- for(z=0; z<M_SIZE; z+=bsize) {
- y[IX(x, z+csize)] = f4(y[IX(x, z)],
- y[IX(x, z+bsize)],
- y[IX(x-csize, z+csize)],
- y[IX(x+csize, z+csize)]) + (rand()%(rnd+1) - (rnd/2));
- }
- }
-
- bsize /= 2;
- csize /= 2;
- if(csize < 16)
- rnd /= 2;
- }
-
-
- for(i=0; i<M_SIZE*M_SIZE; i++) {
- if(y[i] < 0) {
- y[i] = 0;
- }
- }
-
- for(j=0; j<4; j++) {
- x = rand()%M_SIZE;
- z = rand()%M_SIZE;
-
- for(i=0; i<100; i++) {
- x += rand()%17 - 8;
- z += rand()%17 - 8;
-
- y[IX(x, z)] = 1000;
- }
-
- }
-
- // 高程数据的平滑处理
-
- for(j=0; j<8; j++) {
- for(x=0; x<M_SIZE; x++) {
- for(z=0; z<M_SIZE; z++) {
- i = y[IX(x-1, z-1)] +
- y[IX(x, z-1)] +
- y[IX(x+1, z-1)] +
- y[IX(x-1, z)] +
- y[IX(x, z)] +
- y[IX(x+1, z)] +
- y[IX(x-1, z+1)] +
- y[IX(x, z+1)] +
- y[IX(x+1, z+1)];
-
- y[IX(x, z)] = i / 9;
- }
- }
- }
-
- colorTerrain();
- }
- void CMyLODView::update_world(void)
- {
- timer += 0.05;
- wTimer += 0.0005;
-
- if(wTimer>1.0) {
- wTimer = 0.0;
- }
-
- move(FORWARD, speed, 1);
- }
- void CMyLODView::move(int type, GLfloat amount, int update)
- {
- GLfloat lightPosition[] = {-1.0, 0.0, 0.2, 0.0};
- GLfloat a;
- switch(type)
- {
- case FORWARD:
- xpos += lookx * amount;
- zpos += lookz * amount;
- break;
- case ROTATE:
- lookx = lookx*cos(amount) + lookz*sin(amount);
- lookz = lookz*cos(amount) - lookx*sin(amount);
- a = 1/sqrt(lookx*lookx + lookz*lookz);
- lookx *= a;
- lookz *= a;
- break;
- case LOOKUP:
- looky += amount;
- break;
- }
-
- if (update)
- {
- check_height();
- glMatrixMode(GL_MODELVIEW);
- glLoadIdentity();
-
- glLightfv(GL_LIGHT0, GL_POSITION, lightPosition);
- }
- }
- void CMyLODView::check_height(void)
- {
-
- float x0, x1, lx, lz, x, z, midpoint;
- int fx, fz;
-
- x = xpos/(COMP*1.0);
- z = zpos/(COMP*1.0);
- fx = (int)(x);
- fz = (int)(z);
- lx = x - fx;
- lz = z - fz;
-
- x0 = y[IX(fx,fz)] + (y[IX(fx,fz+1)] - y[IX(fx,fz)])*lz;
- x1 = y[IX(fx+1,fz)] + (y[IX(fx+1,fz+1)] - y[IX(fx+1,fz)])*lz;
- midpoint = x0 + (x1 - x0)*lx;
- if(flying_mode > 0) {
- ypos = (midpoint * 8) + 1024.0f;
- }
- else {
- ypos = (midpoint * 8) + 16.0f;
- }
- if(x<0)
- xpos = 0;
- else if(x>(M_SIZE))
- xpos = ((M_SIZE) << SHIFT);
- if(z<0)
- zpos = 0;
- else if(z>(M_SIZE))
- zpos = ((M_SIZE) << SHIFT);
-
- }
- void CMyLODView::colorTerrain(void)
- {
- int x, z;
- int h;
-
- for(x=0; x<M_SIZE; x++) {
- for(z=0; z<M_SIZE; z++) {
- h = 200 + (y[IX(x, z)] - y[IX(x+1, z)]) * 8;
-
- if(h>255)
- h = 255;
- else if(h<0)
- h = 0;
-
- colour_map[IX(x, z)].r = h;
- colour_map[IX(x, z)].g = h;
- colour_map[IX(x, z)].b = h;
- }
- }
-
- lt.NEW_BITMAP(texName, y);
- }
- void CMyLODView::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags)
- {
- // TODO: Add your message handler code here and/or call default
- if(nChar==0x57) //VK_W
- {
- if(flying_mode > 0)
- {
- if(speed < 128)
- {
- speed += 8;
- }
- }
- else
- {
- if(speed < 8)
- {
- speed += 2;
- }
- }
- }
- else
- {
- if(flying_mode > 0)
- {
- if(speed > 0)
- {
- speed -= 4;
- }
- }
- else
- {
- if(speed > 0)
- {
- speed -= 1;
- }
- }
- }
-
- if(nChar==0x53) //VK_S
- {
- speed = 0;
- }
-
- if(nChar==0x31) //VK_1
- {
- lod_level = 8;
- }
- if(nChar==0x32) //VK_2
- {
- lod_level = 16;
- }
- if(nChar==0x33) //VK_3
- {
- lod_level = 32;
- }
- if(nChar==0x34) //VK_4
- {
- lod_level = 64;
- }
-
- if(nChar==0x54) //VK_T
- {
- detail_texture_mode = -detail_texture_mode;
- Sleep(100);
- }
- if(nChar==0x46) //VK_F
- {
- flying_mode = -flying_mode; //视点运动模式开关
- speed = 0;
- Sleep(100);
- }
-
- if(nChar==0x42) //VK_B
- {
- for(int i=0; i<100; i++)
- {
- glBindTexture(GL_TEXTURE_2D, texName[i]);
- if(bilinear_filtering > 0)
- {
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- }
- else
- {
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
- }
- }
-
- bilinear_filtering = -bilinear_filtering;
-
- Sleep(100);
- }
- if(nChar==0x4D) //VK_M
- {
- if(wireframe_mode > 0)
- {
- m_Lod.m_bFlag = true; //线框模式
- }
- else
- {
- m_Lod.m_bFlag = false; //纹理模式
- }
-
- wireframe_mode = -wireframe_mode;
-
- Sleep(100);
- }
-
- if(nChar==VK_SPACE)
- {
- randomTerrain(); // 生成随机地形
- }
- CView::OnKeyDown(nChar, nRepCnt, nFlags);
- }