anOpenGLMap.rar_c++ 三维地图_openGL三维地图_opengl 地图

#include "stdafx.h" #include "baiscobj.h" #include "include/bitmap.h" GLfloat r; float gao=1.8f; ////////////////////////////////////////////////////////////////////// baiscobj::baiscobj() { g_eye[0]= MAP; //视点的x分量初值 g_eye[2]=-MAP; //点的y分量初值 g_Angle=0; //方位角初值 g_elev=-0; //俯仰角初值 //////////////////////////////////////////////////////////////////////// // char appdir[256]; // GetCurrentDirectory(256,appdir); // CString dir=appdir; // if(dir.Right(8)!="运行程序") // SetCurrentDirectory("../运行程序"); //////////////////////////////////////////////////////////////////////// g_imageData = LoadBit("data/images/Terrain1.bmp",&g_bit); LoadT8("data/images/sand0.bmp", g_cactus[0]); LoadT8("data/images/0RBack.bmp", g_cactus[2]); LoadT8("data/images/0Front.bmp", g_cactus[3]); LoadT8("data/images/0Top.bmp", g_cactus[4]); LoadT8("data/images/0Left.bmp", g_cactus[5]); LoadT8("data/images/0Right.bmp", g_cactus[6]); InitTerrain(5); glEnable(GL_TEXTURE_2D); } baiscobj::~baiscobj() { for(int i=0;i<16;i++) glDeleteTextures(1, &g_cactus[i]); //消毁纹理 glDisableClientState(GL_VERTEX_ARRAY); //禁用顶点数组 glDisableClientState(GL_TEXTURE_COORD_ARRAY); //禁用多层贴图 } //////////////////////////////////////////////////////////////////////// //启用光照和材料 void baiscobj::light0() { GLfloat light_position[] = {1.0,5.0,1.0,1.0}; glLightfv(GL_LIGHT0, GL_POSITION, light_position); glEnable(GL_LIGHTING); glEnable(GL_LIGHT0); glEnable(GL_DEPTH_TEST); glEnable(GL_COLOR_MATERIAL); } //////////////////////////////////////////////////////////////////////// //场景绘制，主要响不同按键后的视点参数 BOOL baiscobj::DisplayScene() { float speed=0.5f; float x=g_eye[0],y=g_eye[2],z=g_eye[2]; if (KEY_DOWN(VK_SHIFT)) speed =speed*2; //按SHIFT时的加速 if (KEY_DOWN(VK_LEFT)) g_Angle-=speed*2; //左转,方位角- if (KEY_DOWN(VK_RIGHT)) g_Angle+=speed*2; //右转,方位角+ rad_xz = float (3.13149* g_Angle/180.0f); //计算左右旋转角度的弧度值 if (KEY_DOWN(33)) g_elev +=speed; //仰俯角 if (KEY_DOWN(34)) g_elev -=speed; //仰俯角 if (g_elev<-360) g_elev =-360; if (g_elev> 360) g_elev = 360; if (KEY_DOWN(VK_UP)) { g_eye[2]+=(float)sin(rad_xz)*speed; //视点的x分量 g_eye[0]+=(float)cos(rad_xz)*speed; //视点的z分量 } if (KEY_DOWN(VK_DOWN)) { g_eye[2]-=(float)sin(rad_xz)*speed; //视点的x分量 g_eye[0]-=(float)cos(rad_xz)*speed; //视点的z分量 } if(g_eye[0]< MAP_SCALE) g_eye[0]= MAP_SCALE; if(g_eye[0]> (MAP_W-2)*MAP_SCALE) g_eye[0]= (MAP_W-2)*MAP_SCALE; if(g_eye[2]<-(MAP_W-2)*MAP_SCALE) g_eye[2]=-(MAP_W-2)*MAP_SCALE; if(g_eye[2]> -MAP_SCALE) g_eye[2]= -MAP_SCALE; g_eye[1] =GetHeight((float)g_eye[0],(float)g_eye[2])+gao; g_look[0] = (float)(g_eye[0] +100*cos(rad_xz)); g_look[2] = (float)(g_eye[2] +100*sin(rad_xz)); g_look[1] = g_eye[1] +g_elev; gluLookAt(g_eye[0],g_eye[1],g_eye[2], g_look[0],g_look[1],g_look[2], 0.0,1.0,0.0 ); return TRUE; } //========================================================================== void baiscobj::InitTerrain(float h) { int index = 0; int Vertex; for (int z = 0; z < MAP_W; z++) for (int x = 0; x < MAP_W; x++) { Vertex = z * MAP_W + x; g_terrain [Vertex][0] = float(x)*MAP_SCALE; //第Vertex个顶点的x坐标 g_terrain [Vertex][1] = (float)(g_imageData[(z*MAP_W+x)*3]/3); //随机生成第Vertex个顶点的y坐标 g_terrain [Vertex][2] = -float(z)*MAP_SCALE; //第Vertex个顶点的z坐标 //第Vertex个顶点对应的2D纹理坐标 g_texcoord[Vertex][0] = (float) x; g_texcoord[Vertex][1] = (float) z; //顶点数组中要画的第Index个顶点是顶点信息数组中的第Vertex个 g_index [index++] = Vertex; //因为采用的曲面图元是三角形，所以顶点数组中要画的第Index+1个顶点是顶点信息数组中的第Vertex+MAP_W个顶点 g_index [index++] = Vertex+ MAP_W; } glEnableClientState(GL_VERTEX_ARRAY); glVertexPointer (3,GL_FLOAT,0,g_terrain); glEnableClientState(GL_TEXTURE_COORD_ARRAY); glTexCoordPointer (2,GL_FLOAT,0,g_texcoord); } void baiscobj::DrawSand() { glBindTexture(GL_TEXTURE_2D, g_cactus[0]); glTexEnvf (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); for (int z = 0; z < MAP_W-1; z++) glDrawElements(GL_TRIANGLE_STRIP,MAP_W*2,GL_UNSIGNED_INT,&g_index[z*MAP_W*2]); } float baiscobj::GetHeight(float x, float z) { float CameraX = x/MAP_SCALE; float CameraZ =-z/MAP_SCALE; int Col0 = int(CameraX); int Row0 = int(CameraZ); int Col1 = Col0 + 1; int Row1 = Row0 + 1; if (Col1 > MAP_W) Col1 = 0; if (Row1 > MAP_W) Row1 = 0; float h00=g_terrain[Col0 + Row0*MAP_W][1]; float h01=g_terrain[Col1 + Row0*MAP_W][1]; float h11=g_terrain[Col1 + Row1*MAP_W][1]; float h10=g_terrain[Col0 + Row1*MAP_W][1]; float tx =CameraX - int(CameraX); float ty =CameraZ - int(CameraZ); float txty = tx * ty; return h00*(1.0f-ty-tx+txty) + h01*(tx-txty) + h11*txty + h10*(ty-txty); } void baiscobj::CreateSkyBox(int a,int wi,int he,int le) { float width =MAP*wi; float height=MAP*he; float length=MAP*le; float x = MAP -width /2; float y = MAP/a-height/2; float z = -MAP -length/2; /////////////////////////////////////////////////////////////////////////////// texture(g_cactus[2]); glBegin(GL_QUADS); glTexCoord2f(1.0f,0.0f); glVertex3f(x+width,y, z); glTexCoord2f(1.0f,1.0f); glVertex3f(x+width,y+height,z); glTexCoord2f(0.0f,1.0f); glVertex3f(x, y+height,z); glTexCoord2f(0.0f,0.0f); glVertex3f(x, y, z); glEnd(); texture(g_cactus[3]); glBegin(GL_QUADS); glTexCoord2f(1.0f,0.0f); glVertex3f(x, y, z+length); glTexCoord2f(1.0f,1.0f); glVertex3f(x, y+height,z+length); glTexCoord2f(0.0f,1.0f); glVertex3f(x+width,y+height,z+length); glTexCoord2f(0.0f,0.0f); glVertex3f(x+width,y, z+length); glEnd(); texture(g_cactus[4]); glBegin(GL_QUADS); glTexCoord2f(0.0f,1.0f); glVertex3f(x+width,y+height,z); glTexCoord2f(0.0f,0.0f); glVertex3f(x+width,y+height,z+length); glTexCoord2f(1.0f,0.0f); glVertex3f(x, y+height,z+length); glTexCoord2f(1.0f,1.0f); glVertex3f(x, y+height,z); glEnd(); texture(g_cactus[5]); glBegin(GL_QUADS); glTexCoord2f(1.0f,1.0f); glVertex3f(x, y+height,z); glTexCoord2f(0.0f,1.0f); glVertex3f(x, y+height,z+length); glTexCoord2f(0.0f,0.0f); glVertex3f(x, y, z+length); glTexCoord2f(1.0f,0.0f); glVertex3f(x, y, z); glEnd(); texture(g_cactus[6]); glBegin(GL_QUADS); glTexCoord2f(0.0f,0.0f); glVertex3f(x+width,y, z); glTexCoord2f(1.0f,0.0f); glVertex3f(x+width,y, z+length); glTexCoord2f(1.0f,1.0f); glVertex3f(x+width,y+height,z+length); glTexCoord2f(0.0f,1.0f); glVertex3f(x+width,y+height,z); glEnd(); } void baiscobj::texture(UINT textur) { glBindTexture (GL_TEXTURE_2D, textur); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST); } //========================================================================== void baiscobj::picter(float x,float y,float z) {y=GetHeight(x,z); glDisable(GL_TEXTURE_2D); glPushAttrib(GL_CURRENT_BIT); glPushMatrix(); glTranslatef(x,y+0.5f,z); glColor3f(0.0f,1.0f,0.2f); auxSolidCube(1); glTranslatef(0.0f,0.8f,0.0f); glColor3f(0.0f,0.0f,1.0f); auxSolidBox(.2f,1.3f,.2f); glPopMatrix(); glPushMatrix(); glTranslatef(x,y+2.5f,z); glRotatef(r-90,0.0,1.0,0.0); //======================================= glColor3f(1.0f,1.0f,1.0f); glRotatef(45, 1.0, 0.0, 0.0); auxWireCone(1.5,0.6f);