實驗三觀察三維物體

1、實驗三觀察三維物體姓名 葉傳軍 學號E11414103得分閱讀arraycube.c，掌握彩色立方體的建模方法，為程序加注釋。修改arraycube.c，實現(xiàn)交互式地移動照相機來觀察已經(jīng)建模好的彩色立方體。即用鼠標 或鍵盤來改變 gluLookAt(eyex, eyey, eyez, atx, aty, atz, upx, upy, upziS數(shù)的 9 個參數(shù)， 以此來觀察立方體。要求：交互時采用的鼠標和鍵盤按鍵自定。分別在正投影和透視投影下實現(xiàn)題目中的功能?？稍黾硬藛喂δ埽瑢⒄队昂屯敢曂队跋碌挠^察功能融合到一個程序中。可參考交互 式教程Projection.c的功能。在arraycube.

2、c的基礎(chǔ)上編寫一個交互式程序，實現(xiàn)立方體的旋轉(zhuǎn)。具體要求如下：(1)立方體的旋轉(zhuǎn)方式由鼠標和鍵盤按鍵來控制：按下鼠標左鍵，立方體繞x軸連續(xù)旋轉(zhuǎn)； 按下鼠標左鍵+ctrl鍵，立方體繞y軸連續(xù)旋轉(zhuǎn)；按下鼠標右鍵，立方體繞z軸連續(xù)旋轉(zhuǎn)。(注意：旋轉(zhuǎn)的不動點在原點，正好是立方體的中心。)(2 )如果旋轉(zhuǎn)的不動點不在原點，而改為點P (1,1,1)，如何實現(xiàn)立方體繞3個坐標軸軸 的旋轉(zhuǎn)？(3 )如果要求每按下一次鼠標按鍵或鍵盤按鍵，立方體旋轉(zhuǎn)的角度增加5度，應(yīng)如何修改 程序？自學教材4.2.7節(jié)。編寫一個交互式程序，使其可以通過鼠標(或鍵盤)和菜單實現(xiàn)一些glu和glut對象的旋轉(zhuǎn)，平移和比例縮放。(加

3、自己的創(chuàng)意)二設(shè)計思想本次試驗主要是用戶交互與三維物體觀察的結(jié)合，主要用到的函數(shù)有g(shù)luPerspective(fovy, aspect, near, far);glOrtho(left, right, bottom, top, near, far);gluLookAt(eyex, eyey, eyez, atx, aty, atz, upx, upy, upz);通過這些函數(shù)的調(diào)用可以分別在正投影和透視投影下從不同的角度來觀察三維物體。三程序清單1. #includestdafx.h#include #include GLdouble vertices83= -1.0, -1.0, 1.0,

4、?-1.0,1.0,1.0,1.0,1.0,1.0,?1.0,-1.0,1.0,-1.0,-1.0,-1.0,-1.0,1.0,-1.0, 1.0,1.0,-1.0, 1.0,-1.0,-1.0;GLdouble colors83=0.0,0.0,0.0, 1.0,0.0,0.0,1.0,1.0,0.0,0.0,1.0,0.0, 0.0,0.0,1.0,1.0,0.0,1.0, 1.0,1.0,1.0,0.0,1.0,1.0;/定義頂點和顏色的全局數(shù)組void polygon(int a, int b, int c , int d)/根據(jù)索引列表繪制多邊形/* draw a polygon v

5、ia list of vertices */glBegin(GL_QUADS);glColor3dv(colorsa);glVertex3dv(verticesa);glColor3dv(colorsb);glVertex3dv(verticesb);glColor3dv(colorsc);glVertex3dv(verticesc);glColor3dv(colorsd);glVertex3dv(verticesd);glEnd();void colorcube()/* map vertices to faces */利用表面繪制立方體polygon(0,3,2,1);polygon(2,3

6、,7,6);polygon(0,4,7,3);polygon(1,2,6,5);polygon(4,5,6,7);polygon(0,1,5,4);void display()/* display callback, clear frame buffer and z buffer,/and draw, swap buffers */顯示回調(diào)函數(shù)glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);glMatrixMode(GL_MODELVIEW);glLoadIdentity();gluLookAt(1.0, 1.0, 1.0, 0.0, 0.

7、0, 0.0, 0.0, 1.0, 0.0);colorcube();glutSwapBuffers(); void myReshape(int w, int h)設(shè)置投影方式glViewport(0, 0, w, h);glMatrixMode(GL_PROJECTION);glLoadIdentity();if (w = h)glOrtho(-2.0, 2.0, -2.0 * (GLfloat) h / (GLfloat) w,2.0 * (GLfloat) h / (GLfloat) w, -10.0, 10.0);elseglOrtho(-2.0 * (GLfloat) w / (GL

8、float) h,2.0 * (GLfloat) w / (GLfloat) h, -2.0, 2.0, -10.0, 10.0);glMatrixMode(GL_MODELVIEW);void main(int argc, char *argv)glutInit(&argc, argv);glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);/設(shè)置窗口的顯示模式glutInitWindowSize(500, 500);/指定窗口大小glutCreateWindow(E11414103 葉傳軍);/創(chuàng)建一個名為E11414103 葉傳

9、軍的 窗口glClearColor(0.0,0.0,0.0,0.0);/指 定窗口的背景色為黑色/glShadeModel(GL_SMOOTH);glShadeModel(GL_FLAT);glutReshapeFunc(myReshape);glutDisplayFunc(display);/設(shè)置當前窗口的顯示回調(diào)函數(shù)/glEnable(GL_DEPTH_TEST); /* Enable hidden-surface-removal */glutMainLoop();/啟動主GLUT事件處理循環(huán)2.(1)#includestdafx.h#include #include GLdouble v

10、ertices83 =(-1.0, -1.0, 1.0,-1.0,1.0,1.0,(1.0,1.0,1.0,1.0,-1.0,1.0,-1.0,-1.0,-1.0,-1.0,1.0,-1.0, 1.0,1.0,-1.0, 1.0,-1.0,-1.0；GLdouble colors83=0.0,0.0,0.0, 1.0,0.0,0.0,1.0,1.0,0.0,0.0,1.0,0.0, 0.0,0.0,1.0,1.0,0.0,1.0, 1.0,1.0,1.0,0.0,1.0,1.0;/定義頂點和顏色的全局數(shù)組int x1=1,y1=1,z1=1,x2=0,y2=0,z2=0,x3=0,y3 = 1

11、,z3=0;void polygon(int a, int b, int c , int d)/根據(jù)索引列表繪制多邊形/* draw a polygon via list of vertices */glBegin(GL_QUADS);glColor3dv(colorsa);glVertex3dv(verticesa);glColor3dv(colorsb);glVertex3dv(verticesb);glColor3dv(colorsc);glVertex3dv(verticesc);glColor3dv(colorsd);glVertex3dv(verticesd);glEnd();vo

12、id colorcube()/利用表面繪制立方體/* map vertices to faces */polygon(0,3,2,1);polygon(2,3,7,6);polygon(0,4,7,3);polygon(1,2,6,5);polygon(4,5,6,7);polygon(0,1,5,4);void display()/顯示回調(diào)函數(shù)/* display callback, clear frame buffer and z buffer,/and draw, swap buffers */glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_B

13、IT);glMatrixMode(GL_MODELVIEW);glLoadIdentity();gluLookAt(x1, y1, z1, x2, y2, z2, x3, y3, z3);colorcube();glutSwapBuffers();void myReshape(int w, int h)設(shè)置投影方式正投影glViewport(0, 0, w, h);glMatrixMode(GL_PROJECTION);glLoadIdentity();if (w = h)glOrtho(-2.0, 2.0, -2.0 * (GLfloat) h / (GLfloat) w,2.0 * (GL

14、float) h / (GLfloat) w, -10.0, 10.0);elseglOrtho(-2.0 * (GLfloat) w / (GLfloat) h,2.0 * (GLfloat) w / (GLfloat) h, -2.0, 2.0, -10.0, 10.0);glMatrixMode(GL_MODELVIEW); void keyboard(unsigned char key,int x,int y) if(key= = q)x1+;glutPostRedisplay();else if(key= = Q)x1-;glutPostRedisplay();else if(key

15、= = w)y1+;glutPostRedisplay();else if(key= = W)y1-;glutPostRedisplay();else if(key= = e)z1+;glutPostRedisplay();else if(key= = E)z1-;glutPostRedisplay();else if(key= = a)x2+;glutPostRedisplay();else if(key= = A)x2-;glutPostRedisplay();else if(key= = s)y2+;glutPostRedisplay();else if(key= = S)y2-;glu

16、tPostRedisplay();else if(key= = d)z2+;glutPostRedisplay();else if(key= = D)z2-;glutPostRedisplay();else if(key= = z)x3 + +;glutPostRedisplay();else if(key= = Z)z3-；glutPostRedisplay();else if(key= = x)y3+;glutPostRedisplay();else if(key= = X)y3-;glutPostRedisplay();else if(key= = c)z3 + +;glutPostRe

17、display();else if(key= = C)z3-； glutPostRedisplay();void main(int argc, char *argv)glutInit(&argc, argv);glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB|GLUT_DEPTH);/設(shè)置窗口的 顯示模式glutInitWindowSize(500, 500);/指定窗口大小glutCreateWindow(E11414103 葉傳軍);/創(chuàng)建一個名為E11414103 葉傳 軍的窗口glClearColor(0.0,0.0,0.0,0.0);/指 定窗口的背景

18、色為黑色/glShadeModel(GL_SMOOTH);glShadeModel(GL_FLAT);glutReshapeFunc(myReshape);glutDisplayFunc(display);/設(shè)置當前窗口的顯示回調(diào)函數(shù)glutKeyboardFunc(keyboard);/glEnable(GL_DEPTH_TEST); /* Enable hidden-surface-removal */g_uiMa5LOOP()7、mH+GLUTJHHiE11414103葉傳軍 g 回(2)#includestdafx.h#include #include GLdouble vertice

19、s83 =-1.0, -1.0, 1.0,-1.0,1.0,1.0,1.0,1.0,1.0,1.0,-1.0,1.0,-1.0,-1.0,-1.0,-1.0,1.0,-1.0, 1.0,1.0,-1.0, 1.0,-1.0,-1.0；GLdouble colors83=0.0,0.0,0.0, 1.0,0.0,0.0,1.0,1.0,0.0,0.0,1.0,0.0, 0.0,0.0,1.0,1.0,0.0,1.0, 1.0,1.0,1.0,0.0,1.0,1.0;/定義頂點和顏色的全局數(shù)組int x1=1,y1=1,z1=1,x2=0,y2=0,z2=0,x3=0,y3 = 1,z3=0;vo

20、id polygon(int a, int b, int c , int d)/根據(jù)索引列表繪制多邊形/* draw a polygon via list of vertices */glBegin(GL_QUADS);glColor3dv(colorsa);glVertex3dv(verticesa);glColor3dv(colorsb);glVertex3dv(verticesb);glColor3dv(colorsc);glVertex3dv(verticesc);glColor3dv(colorsd);glVertex3dv(verticesd);glEnd();void color

21、cube()/利用表面繪制立方體/* map vertices to faces */polygon(0,3,2,1);polygon(2,3,7,6);polygon(0,4,7,3);polygon(1,2,6,5);polygon(4,5,6,7);polygon(0,1,5,4);void display()/顯示回調(diào)函數(shù)/* display callback, clear frame buffer and z buffer,/and draw, swap buffers */glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);glMa

22、trixMode(GL_MODELVIEW);glLoadIdentity();gluLookAt(x1, y1, z1, x2, y2, z2, x3, y3, z3);colorcube();glutSwapBuffers();void myReshape(int w, int h)設(shè)置投影方式透視投影glViewport(0, 0, w, h);glMatrixMode(GL_PROJECTION);glLoadIdentity();if (w = h)glFrustum(-2.0, 2.0, -2.0 * (GLfloat) h / (GLfloat) w,2.0 * (GLfloat

23、) h / (GLfloat) w, -10.0, 10.0);elseglFrustum(-2.0 * (GLfloat) w / (GLfloat) h,2.0 * (GLfloat) w / (GLfloat) h, -2.0, 2.0, -10.0, 10.0);glMatrixMode(GL_MODELVIEW); void keyboard(unsigned char key,int x,int y)if(key= = q)x1+;glutPostRedisplay();else if(key= = Q)x1-;glutPostRedisplay();else if(key= =

24、w)y1+;glutPostRedisplay();else if(key= = W)y1-;glutPostRedisplay();else if(key= = e)z1+;glutPostRedisplay();else if(key= = E)z1-;glutPostRedisplay();else if(key= = a)x2+;glutPostRedisplay();else if(key= = A)x2-;glutPostRedisplay();else if(key= = s)y2+;glutPostRedisplay();else if(key= = S)y2-;glutPostRedisplay();else if(key= = d)z2+;glutPostRedisplay();else if(key= =