计算机图形学黄欣2013212318

1、计算机图形学姓名：黄欣 学号：2013212318 日期：2015.12.271创建新项目1）点击文件-新建-项目2）选择Visual C+中的Win32控制台应用程序，修改文件名，最后点击确定即可 3）点击下一步4）勾选空项目，点击完成5）右键点击新建好的test1下的资源文件-添加-新建项6）选择C+文件，修改文件名即可2在创建的新项目中，写程序代码。第二次作业 地图绘制#include#include#include#includeusing namespace std ;class MapPoint public :double longitude ;/经度double latitud

2、e ;/纬度;class Polygon public :vector Points;/多边形的顶点序列;vector polys ;/多边形集合vector ReadMapData (char *filename )/文件名int PointCount ;/计算点的个数vector Polygons;ifstream fs (filename );/寻找filename文件是否为空while (fs .eof ()!=true ) Polygon* poly =new Polygon;/定点个数fsPointCount;/定点个数赋值给fscout PointCountendl ;for (

3、int i=0;i p .longitudep .latitude;poly -Points .push_back (p);Polygons.push_back (poly );return Polygons;void display (void )glClear (GL_COLOR_BUFFER_BIT);/用蓝色绘制各省边界glColor3f (0.0,0.0,1.0);/设置正面为填充模式glPolygonMode (GL_BACK,GL_LINE );for (int i=0;i polys .size ();i +)vector Points=polys i-Points ;glBe

4、gin (GL_LINE_LOOP );/使用闭合曲线方式绘制各省边界for (int j =0;j Points.size ();j +)glVertex3f (Pointsj.longitude ,Pointsj.latitude ,0.0);glEnd ();glFlush ();void init (void)/设置背景颜色glClearColor (1.0,1.0,1.0,0.0);/初始化观察值glMatrixMode (GL_PROJECTION );/将矩阵模式设为投影glLoadIdentity (); /对矩阵进行单位化glOrtho (108.0,120.0,30.0,3

5、8.0,-2.0,2.0);/构造平行投影矩阵，注意坐标的位置int main(int argc,char*argv)/主函数char *filename=D:/HenanCounty.txt;/文件名与文件目录对应polys=ReadMapData(filename);/读定义的文件给ploysglutInit(&argc,argv);/初始化glutInitDisplayMode(GLUT_RGB|GLUT_SINGLE);/单存缓和RGBglutInitWindowPosition(100,100);/窗口位置glutInitWindowSize(450,450); /窗口大小 glut

6、CreateWindow(henancountry); /窗口标题init();glutDisplayFunc(display);/设置一个函数，当需要画图时，调用该函数glutMainLoop();/进行消息循环return 0;第五章、二维观察红蓝三角形#includetypedef GLfloat point2d2;/点数据类型void triangle (point2d a,point2d b,point2d c)/显示一个三角形glBegin (GL_TRIANGLES);glVertex2fv(a);glVertex2fv(b);glVertex2fv(c);glEnd();voi

7、d display(void)point2d v3 = -1,-0.58,1,-0.58,0,1.15;/设置初始三角形顶点glClear(GL_COLOR_BUFFER_BIT);/清空显示窗口glColor3f(0,0,1);/设置填充颜色为蓝色glViewport(0,0,300,400);/设置左视区triangle (v0,v1,v2);/三个顶点glColor3f(1,0,0);/设置填充颜色为红色glViewport(300,0,300,400);设置右视区glRotatef(90,0,0,1);关于z轴旋转triangle (v0,v1,v2);显示蓝色三角形glFlush()

8、;void init()glMatrixMode(GL_PROJECTION);glLoadIdentity();gluOrtho2D(-2,2,-2,2);glMatrixMode(GL_MODELVIEW);glClearColor(1,1,1,1);/蓝色void main (int argc,char *argv)/显示窗体glutInit(&argc,argv);glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);glutInitWindowSize(600,400);glutCreateWindow(Triangle);glutDisplayFunc

9、(display);init();glutMainLoop();这次编程让我学会了画三角形，填充三角形颜色，还有旋转三角形。四棱锥和立方体实体模型#includetypedef GLfloat point2d2;/点数据类型void triangle (point2d a,point2d b,point2d c)/显示一个三角形glBegin (GL_TRIANGLES);glVertex2fv(a);glVertex2fv(b);glVertex2fv(c);glEnd();void display(void)point2d v3 = -1,-0.58,1,-0.58,0,1.15;/设置初

10、始三角形顶点glClear(GL_COLOR_BUFFER_BIT);/清空显示窗口glColor3f(0,0,1);/设置填充颜色为蓝色glViewport(0,0,300,400);/设置左视区triangle (v0,v1,v2);/三个顶点glColor3f(1,0,0);/设置填充颜色为红色glViewport(300,0,300,400);/设置右视区glRotatef(90,0,0,1);/关于z轴旋转triangle (v0,v1,v2);/显示蓝色三角形glFlush();void init()glMatrixMode(GL_PROJECTION);glLoadIdentit

11、y();gluOrtho2D(-2,2,-2,2);glMatrixMode(GL_MODELVIEW);glClearColor(1,1,1,1);/蓝色void main (int argc,char *argv)/显示窗体glutInit(&argc,argv);glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);glutInitWindowSize(600,400);glutCreateWindow(Triangle);glutDisplayFunc(display);init();glutMainLoop();第六章三维观察立方体透视投影#includ

12、eGLint winWidth = 600,winHeight = 600;/设置初始化窗口大小/*观察坐标系参数设置*/GLfloat x0 = 0,y0 = 0,z0=5;/ 设置观察坐标系原点 GLfloat xref = 0.0, yref =0.0, zref = 0.0; /设置观察坐标系参考点（视点） GLfloat Vx = 0.0, Vy = 1.0, Vz = 0.0; / 设置观察坐标系向上向量（y轴） /*观察体（视见体）参数设置 */ GLfloat xwMin = -1.0, ywMin = -1.0, xwMax = 1.0, ywMax = 1.0;/设置裁剪窗

13、口坐标范围 GLfloat dnear = 1.5,dfar = 20;/设置远、近裁剪面深度范围void init(void)glClearColor(1,1,1,0);/glShadeModel (GL_FLAT);/xz /*观察变换*/ /*视点变换*/ gluLookAt(x0,y0,z0,xref,yref,zref,Vx,Vy,Vz);/指定三维观察参数 /*模型变换*/glMatrixMode(GL_MODELVIEW);glScalef(2,2,2);/比例放缩变换扩大两倍glRotatef(45,0,1,1);/旋转变换/*投影变换*/ glMatrixMode (GL_P

14、ROJECTION); glLoadIdentity();glFrustum(xwMin,xwMax,ywMin,ywMax,dnear,dfar);/透视投影，设置透视视景体void displayFcn(void)glClear(GL_COLOR_BUFFER_BIT);glColor3f(0,1,0); /设置前景色为绿色glutSolidCube(1);/绘制单位立方体实体glColor3f(0,0,0);/ 设置前景色为黑色glLineWidth(2);/设置线宽glutWireCube(1);/绘制单位立方体线框 glFlush();void reshapeFcn (GLint n

15、ewWidth, GLint newHeight) /*视口变换 */ glViewport (0, 0, newWidth, newHeight);/定义视口大小 winWidth = newWidth; winHeight = newHeight; void main (int argc, char* argv) glutInit (&argc, argv); glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB); glutInitWindowPosition(100,100);glutInitWindowSize(winWidth,winHeight)

16、;glutCreateWindow(单位立方体的透视投影);init();glutDisplayFunc(displayFcn);glutReshapeFunc(reshapeFcn);glutMainLoop();第七章、BeZier曲线绘制#includeGLfloat ctrlpoints 43 = -4,-4,0,-2,3,0,2,4.5,0,3,-3,0;void init(void)glClearColor(1,1,1,0);glShadeModel(GL_FLAT);/下行用于定义曲线函数glMap1f(GL_MAP1_VERTEX_3,0,1,3,4,&ctrlpoints00

17、);glEnable(GL_MAP1_VERTEX_3);/将当前曲线激活void display(void)int i;glClear(GL_COLOR_BUFFER_BIT);/下面用求值器按20等分计算BeZier曲线上的点glColor3f(0,0,0);glLineWidth(2);glBegin(GL_LINE_STRIP);for (i = 0;i20;i+)glEvalCoord1f(GLfloat) i/20);glEnd();glLineWidth(1);glColor3f(0,0,1);glBegin(GL_LINE_STRIP);for (i = 0;i4;i+)glV

18、ertex3fv(&ctrlpointsi0);glEnd();glFlush();void reshape(int w,int h)glViewport(0,0,(GLsizei)w,(GLsizei)h);glMatrixMode(GL_PROJECTION);glLoadIdentity();if (w = h)glOrtho(-5,5,-5*(GLfloat)h/(GLfloat)w,5*(GLfloat)h/(GLfloat)w,-5,5);else glOrtho(-5*(GLfloat)w/(GLfloat)h,5*(GLfloat)w/(GLfloat)h,-5,5,-5,5)

19、;glMatrixMode(GL_MODELVIEW);glLoadIdentity();int main (int argc,char* argv) glutInit (&argc, argv); glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB); glutInitWindowPosition(100,100);glutInitWindowSize(500,500);glutCreateWindow(argv0);init();glutDisplayFunc(display);glutReshapeFunc(reshape);glutMainLoop(

20、);return 0;2BeZier曲线绘制#includeGLfloat ctrlpoints 443 = -3,-0,4,-2,0,2,-1,0,0,0,0,2,-3,1,1,-2,1,3,-1,1,6,0,1,-1,-3,2,4,-2,2,0,-1,2,3,0,2,4,-3,3,0,-2,3,0,-1,3,0,0,3,0;void display(void)int i,j;glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);glColor3f(0,0,0);glPushMatrix ();glRotatef(85,1,1,1);for (j

21、= 0;j=20;j+)glBegin(GL_LINE_STRIP);for (i = 0;i=20;i+)glEvalCoord2f(GLfloat) i/20,(GLfloat) j/20);glEnd();glBegin(GL_LINE_STRIP);for (i = 0;i=20;i+)glEvalCoord2f(GLfloat) j/20,(GLfloat) i/20);glEnd();glPopMatrix();glFlush();void init(void)glClearColor(1,1,1,1);glMap2f(GL_MAP2_VERTEX_3,0,1,3,4,0,1,12

22、,4,&ctrlpoints000);glEnable(GL_MAP2_VERTEX_3);glOrtho(-5,5,-5,5,-5,5);int main (int argc,char* argv) glutInit (&argc, argv); glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB|GLUT_DEPTH); glutInitWindowPosition(100,100);glutInitWindowSize(500,500);glutCreateWindow(argv0);init();glutDisplayFunc(display);gl

23、utMainLoop();return 0;最后一次作业：茶壶绘制#include #include void init(void)/* 设置材质的镜面反射光的反射系数*/GLfloat mat_specular=1.0,1.0,1.0,1.0; /* 设置材质的镜面反射系数*/GLfloat mat_shininess=50.0;/* 设置光源位置的值*/GLfloat light_position=1.0,1.0,1.0,0.0;/* 设置漫反射光和折射光分量强度的值*/GLfloat white_light=1.0,1.0,1.0,1.0;/* 设置点光源的颜色*/GLfloat Lig

24、ht_Model_Ambient=0.2,0.2,0.2,1.0;/* 清除窗口的颜色,显示为黑色*/glClearColor(0.0,0.0,0.0,0.0);/* 设置阴影模型*/glShadeModel(GL_SMOOTH);/* 设置表面特性函数，指定物体正面被赋予制定材质，设置镜面反射光的反射系数和镜面反射系数*/glMaterialfv(GL_FRONT,GL_SPECULAR,mat_specular); glMaterialfv(GL_FRONT,GL_SHININESS,mat_shininess);/建立光源/* 设置一个OpenGL光源，设置光源位置，light_posi

25、tion为它的属性值，这是先前设置的量*/glLightfv(GL_LIGHT0,GL_POSITION,light_position); /* 设置光源的设置漫反射光分量强度，white_light为它的属性值，这是先前设置的量*/glLightfv(GL_LIGHT0,GL_DIFFUSE,white_light); /* 设置光源的设置直射光分量强度，white_light为它的属性值，这是先前设置的量*/glLightfv(GL_LIGHT0,GL_SPECULAR,white_light); /* 设置点光源的颜色*/ glLightModelfv(GL_LIGHT_MODEL_AM

26、BIENT,Light_Model_Ambient);/* 启用光照模型，glEnable()是用于启用各种功能，与glDisabale()相对应*/glEnable(GL_LIGHTING); /*启用GL_LIGHT0这个光源*/glEnable(GL_LIGHT0); /*启用更新深度缓存区功能*/glEnable(GL_DEPTH_TEST);void display(void ) /*清除颜色缓存和深度缓存*/glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);/glutSolidSpehere（1.0，20，16）； /*显示茶壶*/glutSolidTeapot(0.5); /*强制刷新缓冲，保证绘图的命令将被执行，而不是存储在缓冲区等待其他命令*/glFlush();void reshape(int w,int h ) /*视口函数，0，0是指定了窗口的左下角，以（0,0）为原点位置，指定已定义的w,h为视口矩形的宽度和高度*/glViewport(0,0,(GLsizei)w,(GL