OpenGL: 折线图和直方图

来源：互联网发布：移动数据流量可以用吗编辑：程序博客网时间：2024/06/05 04:46

#include <Windows.h>#include <GL/glut.h>#pragma comment(lib,"glut32.lib")//初始化窗口大小GLsizei winWidth =600,winHeight=600; GLint xRaster=25,yRaster=150;GLubyte label[36]={'J','a','n',    'F','e','b',   'M','a','r', 'A','p','r',     'M','a','y',   'J','u','n','J','u','l',      'A','u','g',    'S','e','p','O','c','t',      'N','o','v',     'D','e','c'};GLint dataValue[12]={420,342,324,310,262,185,190,196,217,240,312,438};void init(void){glClearColor(1.0,1.0,1.0,1.0);glMatrixMode(GL_PROJECTION);gluOrtho2D(0.0,600.0,0.0,500.0);}void lineGraph(void){GLint month,k;GLint x=30;glClear(GL_COLOR_BUFFER_BIT);glColor3f(1.0,0.0,0.0);for (k=0;k<12;k++){glRecti(20+k*50,165,40+k*50,dataValue[k]);}glColor3f(0.0,0.0,1.0);glBegin(GL_LINE_STRIP);for (k=0;k<12;k++){glVertex2i(x+k*50,dataValue[k]);}glEnd();glColor3f(1.0,0.0,0.0);for (k=0;k<12;k++){glRasterPos2i(xRaster+k*50,dataValue[k]-4);glutBitmapCharacter(GLUT_BITMAP_9_BY_15,'*');}glColor3f(0.0,0.0,0.0);xRaster=20;for (month=0;month<12;month++){glRasterPos2i(xRaster,yRaster);for (k=3*month;k<3*month+3;k++){glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12,label[k]);}xRaster+=50;}glFlush();}void winReshapeFcn(int newWidth,int newHeight){glMatrixMode(GL_PROJECTION);glLoadIdentity();gluOrtho2D(0.0,(GLdouble)newWidth,0.0,(GLdouble)newHeight);glClear(GL_COLOR_BUFFER_BIT);}void main( int  argc,char** argv){glutInit(&argc,argv);glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);glutInitWindowPosition(100,100);glutInitWindowSize(winWidth,winHeight);glutCreateWindow("Line Chart Data Plot");init();glutDisplayFunc(lineGraph);glutReshapeFunc(winReshapeFcn);glutMainLoop();}

http://www.cnblogs.com/lizhi0320/archive/2009/07/25/1531050.html

0 0