op.zip_三维图像旋转

#include <windows.h> #include <gl/glut.h> #include <stdlib.h> #define MAX_CHAR 128 GLuint OlympicRings1,OlympicRings2; static GLfloat xRot=0.0f; //x方向旋转参数 static GLfloat yRot=0.0f; //y方向旋转参数 static GLfloat zRot=0.0f; //z方向旋转参数 int iPointNum=0; //已确定点的数目 int x1=0,x2=0,y1=0,y2=0; //确定的点的坐标 int winWidth=400,winHeight=400;//窗口的宽度和高度 static GLsizei iMode=0; void initial(void) { OlympicRings1=glGenLists(1); glNewList(OlympicRings1,GL_COMPILE); glBegin(GL_LINES); glColor4f(1.0f,0.0f,0.0f,1.0f);//x设置笔的颜色为红 glVertex3f(-3.0f,0.0f,0.0f); glVertex3f(3.0f,0.0f,0.0f); glColor4f(0.0f,1.0f,0.0f,1.0f);//y设置笔的颜色为绿色 glVertex3f(0.0f,-3.0f,0.0f); glVertex3f(0.0f,3.0f,0.0f); glColor4f(0.0f,0.0f,1.0f,1.0f);//z设置笔的颜色为蓝色 glVertex3f(0.0f,0.0f,-3.0f); glVertex3f(0.0f,0.0f,3.0f); glEnd(); glEndList(); OlympicRings2=glGenLists(1); glNewList(OlympicRings2,GL_COMPILE); glBegin(GL_TRIANGLES); /*三角形ABD*/ glColor4f(0.0f,0.6f,1.0f,0.5f); glVertex3f(2.0f,0.0f,0.0); //绘制A顶点 glVertex3f(2.0f,1.0f,0.0); //绘制B顶点 glVertex3f(1.0f,1.0f,1.0); //绘制D顶点 /*三角形ABC*/ glColor4f(0.6f,0.0f,1.0f,0.5f); glVertex3f(2.0f,0.0f,0.0); //绘制A顶点 glVertex3f(2.0f,1.0f,0.0); //绘制B顶点 glVertex3f(0.0f,1.0f,0.0); //绘制C顶点 /*三角形ACD*/ glColor4f(1.0f,0.6f,0.0f,0.5f); glVertex3f(2.0f,0.0f,0.0); //绘制A顶点 glVertex3f(0.0f,1.0f,0.0); //绘制C顶点 glVertex3f(1.0f,1.0f,1.0); //绘制D顶点 /*三角形BCD*/ glColor4f(0.6f,1.0f,0.6f,0.5f); glVertex3f(2.0f,1.0f,0.0); //绘制B顶点 glVertex3f(0.0f,1.0f,0.0); //绘制C顶点 glVertex3f(1.0f,1.0f,1.0); //绘制D顶点 glEnd(); glEndList(); } void drawString(const char* str,GLfloat x,GLfloat y) { static GLuint lists; lists=glGenLists(MAX_CHAR); wglUseFontBitmaps(wglGetCurrentDC(),0,MAX_CHAR,lists); glListBase(lists); //起始位置 //glRasterPos3f(x,y,z); glRasterPos2f(x,y); glCallLists(strlen(str),GL_UNSIGNED_BYTE,str); } void initialOrtho2D() { GLint vp[4]; glGetIntegerv(GL_VIEWPORT,vp); winWidth=vp[2]; winHeight=vp[3]; float x; if(winWidth>winHeight) x=(float)(winHeight)/(float)(winHeight); else x=(float)(winWidth)/(float)(winWidth); glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);//多边形的模式为 glMatrixMode(GL_PROJECTION); glLoadIdentity(); glOrtho(-4.0*x,4.0*x,-4.0*x,4.0*x,-20.0,20); glColor3f(1.0,0.0,0.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glPushMatrix(); } void initialPerspective() { GLint vp[4]; glGetIntegerv(GL_VIEWPORT,vp); winWidth=vp[2]; winHeight=vp[3]; float x; if(winWidth>winHeight) x=(float)(winHeight)/(float)(winHeight); else x=(float)(winWidth)/(float)(winWidth); glPolygonMode(GL_FRONT_AND_BACK,GL_FILL); //多边形 glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(30.0f,x,-4.0f,4.0f); //透视 glColor3f(1.0,0.0,0.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glPushMatrix(); } void SpecialKeys(int key,int x,int y) { switch(iMode){ case 0: //绕x轴旋转 if(key==GLUT_KEY_PAGE_UP) xRot+=30.0f; if(key==GLUT_KEY_PAGE_DOWN) xRot-=30.0f; if(xRot>360.0f) xRot=0.0f; if(xRot<-0.0f) xRot=360.0f; break; case 1: //绕y轴旋转 if(key==GLUT_KEY_PAGE_UP) yRot+=30.0f; if(key==GLUT_KEY_PAGE_DOWN) yRot-=30.0f; if(yRot>360.0f) yRot=0.0f; if(yRot<-0.0f) yRot=360.0f; break; case 2: //绕z轴旋转 if(key==GLUT_KEY_PAGE_UP) zRot+=30.0f; if(key==GLUT_KEY_PAGE_DOWN) zRot-=30.0f; if(zRot>360.0f) zRot=0.0f; if(zRot<-0.0f) zRot=360.0f; break; } glutPostRedisplay(); } void ProcessMenu(int value) { iMode=value; glutPostRedisplay(); } void triangle(GLsizei mode) { switch(mode) { case 1: //正视图XOZ(V) initialOrtho2D(); drawString("xoz(V)",0.0f,0.0f); drawString("x",3.5f,0.0f); drawString("z",0.0f,3.5f); gluLookAt(0,-10,0,0,0,0,0,0,1); glCallList(OlympicRings1); //调用显示列表 break; case 2: //侧视图YOZ(W) initialOrtho2D(); drawString("yoz(W)",0.0f,0.0f); drawString("y",3.5f,0.0f); drawString("z",0.0f,3.5f); gluLookAt(10,0,0,0,0,0,0,0,1); glCallList(OlympicRings1); //调用显示列表 break; case 3: //俯视图XOY(H) initialOrtho2D(); drawString("xoy(H)",0.0f,0.0f); drawString("x",3.5f,0.0f); drawString("y",0.0f,3.5f); gluLookAt(0,0,10,0,0,0,0,1,0); glCallList(OlympicRings1); //调用显示列表 break; case 4: //透视图 initialPerspective(); drawString("Perspective",0.0f,0.0f); /*drawString("Perspective",0.0f,0.0f); drawString("x",3.5f,0.0f,0.0f); drawString("y",0.0f,3.5f,0.0f); drawString("z",0.0f,0.0f,3.5f);*/ gluLookAt(10,10,10,0,0,0,0,0,1); glCallList(OlympicRings1); switch(iMode) { case 0: //绕x轴旋转 glRotatef(xRot,1.0f,0.0f,0.0f); break; case 1: //绕y轴旋转 glRotatef(yRot,0.0f,1.0f,0.0f); break; case 2: //绕z轴旋转 glRotatef(zRot,0.0f,0.0f,1.0f); break; } break; } glCallList(OlympicRings2); //调用显示列表 glPopMatrix(); } void Display(void) { glClear(GL_COLOR_BUFFER_BIT); glViewport(0,200,200,200); triangle(1); glViewport(200,200,200,200); triangle(2); glViewport(0,0,200,200); triangle(3); glViewport(200,0,200,200); triangle(4); glFlush(); } void MousePlot(GLint button,GLint action,GLint xMouse,GLint yMouse) { if(button==GLUT_LEFT_BUTTON && action==GLUT_DOWN){ if(iPointNum==0||iPointNum==2){ iPointNum=1; x1=xMouse; y1=winHeight; } else{ iPointNum=2; x2=xMouse; y2=winHeight; glutPostRedisplay(); } } if(button==GLUT_RIGHT_BUTTON && action==GLUT_DOWN){ iPointNum=0; glutPostRedisplay(); } } void PassiveMouseMove(GLint xMouse,GLint yMouse) { if(iPointNum==1){ x2=xMouse; y2=winHeight; glutPostRedisplay(); }else{ switch(iMode){ case 0: //绕x轴旋转 if(x1>x2) xRot+=5.0f; if(x1<x2) xRot-=5.0f; if(xRot>360.0f) xRot=0.0f; if(xRot<-0.0f) xRot=360.0f; break; case 1: //绕y轴旋转 if(x1>x2) yRot+=5.0f; if(x1<x2) yRot-=5.0f; if(yRot>360.0f) yRot=0.0f; if(yRot<-0.0f) yRot=360.0f; break; case 2: //绕z轴旋转 if(x1>x2) zRot+=5.0f; if(x1<x2) zRot-=5.0f; if(zRot>360.0f) zRot=0.0f; if(zRot<-0.0f) zRot=360.0f; break; } glutPostRedisplay(); } } void main(void) { glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB); glutInitWindowPosition(100,100); glutInitWindowSize(400,400); glutCreateWindow("四视区"); initial(); //创建菜单并定义菜单回掉函数。 int nGlutPolyMenu=glutCreateMenu(ProcessMenu); glutAddMenuEntry("绕x轴旋转",0); //创建菜单 glutAddMenuEntry("绕y轴旋转",1); glutAddMenuEntry("绕z轴旋转",2); glutAttachMenu(GLUT_RIGHT_BUTTON); glutDisplayFunc(Display); glutSpecialFunc(SpecialKeys); glutMouseFunc(MousePlot); //指定鼠标响应函数 glutPassiveMotionFunc(PassiveMouseMove); //指定鼠标移动响应函数 glutMainLoop(); }