北方工业大学计算机图形学课程实验报告题目：实验五曲线曲面学院：计算机学院专业：数字媒体技术指导教师：蔡兴泉学生班级：学生学号：学生姓名：教师评定：实验报告5 曲线曲面一．实验目的1．熟悉OpenGL图形库；2．掌握曲线曲面实现算法。
二．实验环境1．软件环境：操作系统：WinXp应用软件：VC6.0，OpenGL2．硬件环境（查看自己的机子）CPU: Intel PIV 2.80GHz内存RAM: 1GB显卡：NVIDIA GeForce7650，256M显存三．实验内容1. 写程序实现Bezier曲线2. 写程序实现绘制3个半径不同、颜色不同的小球3. 写程序实现一个场景，绘制1个立方体、1个圆锥、1个圆柱、1个茶壶四．程序及结果1. Bezier曲线实现关键程序及注释void RenderScene(void){int i;glClear(GL_COLOR_BUFFER_BIT) //设置贝塞尔曲线glMap1f(GL_MAP1_VERTEX_3, //生成的数据类型0.0f, //u值的下界100.0f, / //u值的上界3, //顶点在数据中的间隔，x,y,z所以间隔是 3nNumPoints, //u方向上的阶，即控制点的个数&ctrlPoints[0][0]); //指向控制点数据的指针glEnable(GL_MAP1_VERTEX_3);// //必须在绘制顶点之前开启glBegin(GL_LINE_STRIP); //使用画线的方式来连接点for(i = 0; i <= 100; i++){glEvalCoord1f((GLfloat) i); //求的点坐标}glEnd();DrawPoints();//画点glutSwapBuffers()；/ /交换两个缓冲区指针}2. 小球绘制实现关键程序及注释void RenderScene(void){GLUquadricObj *pObj; // 定义Quadric ObjectglClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清屏glPushMatrix();//矩阵状态glTranslatef(0.0f, -1.0f, -5.0f);glRotatef(xRot, 1.0f, 0.0f, 0.0f);//glRotatef(yRot, 0.0f, 1.0f, 0.0f);pObj = gluNewQuadric();//创建一个新的二次曲面状态对象gluQuadricNormals(pObj, GLU_SMOOTH);//glPushMatrix();glColor3f(1.0f, 1.0f, 1.0f); //定义颜色为白glTranslatef(0.0f, 1.0f, 0.0f);//圆心坐标gluSphere(pObj, .3f, 26, 13); // 绘制小球半径为0.3 glPopMatrix();glPushMatrix();glColor3f(1.0f, 0.0f, 0.0f);//定义颜色为红glTranslatef(0.0f, 0.0f, 0.0f); // 圆心坐标gluSphere(pObj, .5f, 26, 13);//绘制小球半径为0.5glPopMatrix();//glPushMatrix();//glColor3f(0.0f, 0.0f, 0.0f);// 定义颜色为黑glTranslatef(0.0f, 2.0f, 0.0f); // 圆心坐标gluSphere(pObj, 0.2f, 26, 13);// 绘制小球半径为0.2glPopMatrix();glPopMatrix();//恢复矩阵状态glutSwapBuffers();//交换缓冲}3. 场景绘制实现关键程序及注释void RenderScene(void){GLUquadricObj *pObj; // 定义Quadric ObjectglClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);//清屏glPushMatrix();//保存矩阵glTranslatef(0.0f, -1.0f, -5.0f);glRotatef(xRot, 1.0f, 0.0f, 0.0f);glRotatef(yRot, 0.0f, 1.0f, 0.0f);pObj = gluNewQuadric();//创建一个新的二次曲面状态对象gluQuadricNormals(pObj, GLU_SMOOTH);//绘制正方体glBegin(GL_QUADS); //顶面glNormal3f(0.0f,1.0f,0.0f);glVertex3f(0.5f,0.5f,0.5f);glVertex3f(0.5f,0.5f,-0.5f);glVertex3f(-0.5f,0.5f,-0.5f);glVertex3f(-0.5f,0.5f,0.5f);glEnd();glBegin(GL_QUADS); //底面glNormal3f(0.0f,-1.0f,0.0f);glVertex3f(0.5f,-0.5f,0.5f);glVertex3f(-0.5f,-0.5f,0.5f);glVertex3f(-0.5f,-0.5f,-0.5f);glVertex3f(0.5f,-0.5f,-0.5f);glEnd();glBegin(GL_QUADS); //前面计算机图形学实验报告05glNormal3f(0.0f,0.0f,1.0f);glVertex3f(0.5f,0.5f,0.5f);glVertex3f(-0.5f,0.5f,0.5f);glVertex3f(-0.5f,-0.5f,0.5f);glVertex3f(0.5f,-0.5f,0.5f);glEnd();glBegin(GL_QUADS); //背面glNormal3f(0.0f,0.0f,-1.0f);glVertex3f(0.5f,0.5f,-0.5f);glVertex3f(0.5f,-0.5f,-0.5f);glVertex3f(-0.5f,-0.5f,-0.5f);glVertex3f(-0.5f,0.5f,-0.5f);glEnd();glBegin(GL_QUADS); //左面glNormal3f(-1.0f,0.0f,0.0f);glVertex3f(-0.5f,0.5f,0.5f);glVertex3f(-0.5f,0.5f,-0.5f);glVertex3f(-0.5f,-0.5f,-0.5f);glVertex3f(-0.5f,-0.5f,0.5f);glEnd();glBegin(GL_QUADS); //右面glNormal3f(1.0f,0.0f,0.0f);glVertex3f(0.5f,0.5f,0.5f);glVertex3f(0.5f,-0.5f,0.5f);glVertex3f(0.5f,-0.5f,-0.5f);glVertex3f(0.5f,0.5f,-0.5f);glEnd();//绘制圆锥glPushMatrix();glColor3f(1.0f, 0.6f, 0.3f);glTranslatef(0.0f, 0.5f, 0.0f);glRotatef(-90.0f, 1.0f, 0.0f, 0.0f);gluCylinder(pObj, 0.18f, 0.0f, 0.3f, 26, 13);glPopMatrix();// 绘制圆柱glPushMatrix();glColor3f(0.0f, 0.0f, 0.0f);glTranslatef(0.0f, 1.3f, 0.0f);glRotatef(-90.0f, 1.0f, 0.0f, 0.0f);gluCylinder(pObj, 0.17f, 0.17f, 0.4f, 26, 13);glDisable(GL_CULL_FACE);计算机图形学实验报告05gluDisk(pObj, 0.28f, 0.28f, 26, 13);glTranslatef(0.0f, 0.0f, 0.40f);gluDisk(pObj, 0.0f, 0.17f, 26, 13);glPopMatrix();/绘制/茶壶glPushMatrix();glColor3f(0.0f, 1.0f, 1.0f);glTranslatef(0.0f, 1.0f, 0.0f);glutSolidTeapot(0.25f);glPopMatrix();glPopMatrix();//glutSwapBuffers();//交换缓冲}五．实验收获通过这次实验，我熟悉了OpenGL图形库，掌握了曲线曲面的算法，.掌握了了Bezier 曲线的实现，和基本基本几何体如球体、圆锥、圆柱、茶壶、立方体的画法。
