计算机图形学程序.doc

计算机图形学程序实验一#include #include const int n = 60;const GLfloat R = 0.2f;const GLfloat Pi = 3.1415926536f;void myDisplay(void)int i;glClear(GL_COLOR_BUFFER_BIT);/ glShadeModel(GL_FLAT);/ glShadeModel(GL_SMOOTH); /点glPointSize(2.0);glBegin(GL_POINTS);glVertex2f(0.0f, 0.0f);glEnd(); /由闭合折线组成的圆glBegin(GL_LINE_LOOP);glColor3f(1.0,1.0,0.0);for(i=0; in; +i)glVertex2f(R*cos(2*Pi/n*i), R*sin(2*Pi/n*i);glEnd(); /由不闭合折线组成的两个三角形构成的六星阵图glBegin(GL_LINE_STRIP);glColor3f(1.0,0.0,0.0);glVertex2f(0.0,0.2);glVertex2f(0.1732,-0.1);glVertex2f(-0.1732,-0.1);glVertex2f(0.0,0.2);glEnd(); glBegin(GL_LINE_STRIP);glVertex2f(0.0,-0.2);glVertex2f(0.1732,0.1);glVertex2f(-0.1732,0.1);glVertex2f(0.0,-0.2);glEnd(); /连续三角形组成的扇形glBegin(GL_TRIANGLE_FAN);glVertex2f(0.5,0.5);glVertex2f(0.5,1.0); glColor3f(0.8,0.2,0.5);glVertex2f(0.8,0.9); glColor3f(0.2,0.5,0.8);glVertex2f(0.9,0.8);glColor3f(0.8,0.5,0.2);glVertex2f(1.0,0.5);glEnd(); /虚线glLineWidth(3.0);glEnable(GL_LINE_STIPPLE);glLineStipple(2, 0x0F0F);glBegin(GL_LINES);glColor3f(0.0,0.0,1.0);glVertex2f(-0.5f, 1.0f);glColor3f(1.0,1.0,1.0);glVertex2f(-0.5f,-1.0f);glEnd(); /线glLineWidth(0.5);glDisable(GL_LINE_STIPPLE);glBegin(GL_LINES);glColor3f(1.0,0.0,0.0);glVertex2f(0.5f, 1.0f);glColor3f(1.0,1.0,1.0);glVertex2f(1.0f, 0.5f);glEnd(); glFlush(); int main(int argc, char *argv)glutInit(&argc, argv);glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);glutInitWindowPosition(0, 0);glutInitWindowSize(600, 600);glutCreateWindow(第一个OpenGL程序);glutDisplayFunc(&myDisplay);glutMainLoop();return 0; /*GL_POINTS 单个顶点集 GL_LINES 多组双顶点线段GL_POLYGON 单个简单填充凸多边形 GL_TRAINGLES 多组独立填充三角形 GL_QUADS 多组独立填充四边形 GL_LINE_STRIP 不闭合折线 GL_LINE_LOOP 闭合折线 GL_TRAINGLE_STRIP 线型连续填充三角形串 GL_TRAINGLE_FAN 扇形连续填充三角形串 GL_QUAD_STRIP 连续填充四边形串*/ 我的程序：#include #include const int n = 60;const GLfloat R = 0.2f;const GLfloat Pi = 3.1415926536f;void myDisplay(void)int i;glClear(GL_COLOR_BUFFER_BIT);/清除显示窗口函数/ glShadeModel(GL_FLAT);/ glShadeModel(GL_SMOOTH); /点glPointSize(6.0);/点大小glBegin(GL_POINTS);glVertex2f(0.0f, 0.0f);glEnd(); /由闭合折线组成的圆glBegin(GL_LINE_LOOP);glColor3f(10.0,0.0,0.0);/颜色for(i=0; in; +i)glVertex2f(R*cos(2*Pi/n*i), R*sin(2*Pi/n*i);glEnd(); /由不闭合折线组成的两个三角形构成的六星阵图glBegin(GL_LINE_STRIP);glColor3f(5.0,5.0,0.0);/颜色glVertex2f(0.0,0.2);/起始点位置glVertex2f(0.1732,-0.1);glVertex2f(-0.1732,-0.1);glVertex2f(0.0,0.2);/结束点位置glEnd(); glBegin(GL_LINE_STRIP);glVertex2f(0.0,-0.2);/起始点位置glVertex2f(0.1732,0.1);glVertex2f(-0.1732,0.1);glVertex2f(0.0,-0.2);/结束点位置glEnd(); /连续三角形组成的扇形glBegin(GL_TRIANGLE_FAN);glVertex2f(0.08,0.08);glVertex2f(0.5,1.0); glColor3f(0.0,5.5,0.0);/颜色glVertex2f(0.8,0.9); glColor3f(0.0,0.0,3.0);glVertex2f(0.9,0.8);glColor3f(0.5,2.0,2.0);glVertex2f(1.0,0.5);glEnd(); /虚线glLineWidth(3.0);/线宽glEnable(GL_LINE_STIPPLE);glLineStipple(2, 0x0F0F);glBegin(GL_LINES);glColor3f(0.0,10.0,0.0);/颜色glVertex2f(-0.5f, 1.0f);glColor3f(0.0,0.0,1.0);/下部颜色glVertex2f(-0.5f,-1.0f);glEnd(); /线glLineWidth(0.1);/线宽glDisable(GL_LINE_STIPPLE);glBegin(GL_LINES);glColor3f(1.0,0.0,0.0);/线的颜色glVertex2f(0.5f, 1.0f);glColor3f(1.0,19.0,1.0);glVertex2f(1.0f, 0.5f);glEnd(); glFlush();/调用该函数可以强制清空所有缓存来处理OpenGL函数 int main(int argc, char *argv)glutInit(&argc, argv);/完成GLUT初始化glutInitDisplayMode(GLUT_RGB | GLUT_SINGLE);/初始化窗口的缓存为单缓存，颜色模型为RGBglutInitWindowPosition(0, 0);/初始位置 窗口最左上角glutInitWindowSize(600, 600);/窗口宽600像素高600像素glutCreateWindow(第一个OpenGL程序);/显示窗口标题glutDisplayFunc(&myDisplay);/显示函数glutMainLoop();/完成激活窗口处理函数return 0; /*GL_POINTS 单个顶点集 GL_LINES 多组双顶点线段G