X-opengl立方體的簡單三維交互式幾何變換實(shí)驗(yàn)報告+代碼

1、立方體的簡單三維交互式幾何變換立方體的簡單三維交互式幾何變換。功能：鍵盤的方向鍵實(shí)現(xiàn)立方體的上下左右平移；A鍵，S鍵分別實(shí)現(xiàn)向前，向后旋轉(zhuǎn)；J鍵，K鍵分別實(shí)現(xiàn)放大，縮小；C鍵退出。程序模塊：1.重繪回調(diào)函數(shù)，在窗口首次創(chuàng)建或用戶改變窗口尺寸時被調(diào)用。void reshape(int w, int h) glViewport(0, 0, w, h);/ 指定視口的位置和大小glMatrixMode(GL_PROJECTION);glLoadIdentity();/glFrustum(-1.0, 1.0, -1.0, 1.0, 3.1, 10.0);/gluPerspective(45,1,0.1

2、,10.0);glOrtho(-2.0, 2.0, -2.0, 2.0, 2.0, 10.0);2.繪制一個立方體。void DrawBox() glBegin(GL_QUADS); /前面 glColor3f(1,0,0); glVertex3f(-1.0f, -1.0f, 1.0f); / 四邊形的左下 glVertex3f( 1.0f, -1.0f, 1.0f); / 四邊形的右下 glVertex3f( 1.0f, 1.0f, 1.0f); / 四邊形的右上 glVertex3f(-1.0f, 1.0f, 1.0f); / 四邊形的左上 / 后面 glColor3f(0,1,0); g

3、lVertex3f(-1.0f, -1.0f, -1.0f); / 四邊形的右下 glVertex3f(-1.0f, 1.0f, -1.0f); / 四邊形的右上 glVertex3f( 1.0f, 1.0f, -1.0f); / 四邊形的左上 glVertex3f( 1.0f, -1.0f, -1.0f); / 四邊形的左下 / 頂面 glColor3f(0,0,1); glVertex3f(-1.0f, 1.0f, -1.0f); / 四邊形的左上 glVertex3f(-1.0f, 1.0f, 1.0f); / 四邊形的左下 glVertex3f( 1.0f, 1.0f, 1.0f);

4、/ 四邊形的右下 glVertex3f( 1.0f, 1.0f, -1.0f); / 四邊形的右上 / 底面 glColor3f(1,1,0); glVertex3f(-1.0f, -1.0f, -1.0f); / 四邊形的右上 glVertex3f( 1.0f, -1.0f, -1.0f); / 四邊形的左上 glVertex3f( 1.0f, -1.0f, 1.0f); / 四邊形的左下 glVertex3f(-1.0f, -1.0f, 1.0f); / 四邊形的右下 / 右面 glColor3f(0,1,1); glVertex3f( 1.0f, -1.0f, -1.0f); / 四邊形

5、的右下 glVertex3f( 1.0f, 1.0f, -1.0f); / 四邊形的右上 glVertex3f( 1.0f, 1.0f, 1.0f); / 四邊形的左上 glVertex3f( 1.0f, -1.0f, 1.0f); / 四邊形的左下 / 左面 glColor3f(1,0,1); glVertex3f(-1.0f, -1.0f, -1.0f); / 四邊形的左下 glVertex3f(-1.0f, -1.0f, 1.0f); / 四邊形的右下 glVertex3f(-1.0f, 1.0f, 1.0f); / 四邊形的右上 glVertex3f(-1.0f, 1.0f, -1.0

6、f); / 四邊形的左上 glEnd();3該模塊設(shè)置屏幕顏色和深度緩存，設(shè)置立方體的平移，縮放，旋轉(zhuǎn)變換。void display()glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); /清空顏色和深度緩存glMatrixMode(GL_MODELVIEW);glLoadIdentity();/gluLookAt(2.0, 2.0, 2.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);glTranslatef(0.0f+tx,0.0f+ty,-4.0f);/平移變換glScalef(1+sf,1+sf,1+sf); /縮放變換

7、glRotatef(ratX, 1.0f, 0.0f, 0.0f);/繞X軸的旋轉(zhuǎn)變換 glRotatef(ratY, 0.0f, 1.0f, 0.0f);/繞Y軸的旋轉(zhuǎn)變換 glRotatef(ratZ, 0.0f, 0.0f, 1.0f);/繞Z軸的旋轉(zhuǎn)變換DrawBox(); glFlush();glutSwapBuffers();4.該模塊為設(shè)置深度緩存和啟動深度測試模式。void init()glClearColor (1.0, 1.0, 1.0, 1.0); glEnable(GL_DEPTH_TEST); /啟動深度測試模式5.該模塊為設(shè)置鍵盤的交互式操作。void myKeyb

8、oard(unsigned char key, int x, int y)if(key = 'a' | key = 'A') ratX += 2; ratY += 2; ratZ += 2;if(key = 's' | key = 'S') ratX -= 2; ratY -= 2; ratZ -= 2;if(key = 'j' | key = 'J') sf+=0.1;if(key = 'k' | key = 'K') sf-=0.1; if(key = '

9、c' | key = 'C')exit(0);glutPostRedisplay(); /重新調(diào)用繪制函數(shù)6.該模塊為設(shè)置鍵盤方向鍵的交互式操作。void myspecialKeyboard(int key,int x,int y)if(key = GLUT_KEY_UP ) ty+=0.1; if(key = GLUT_KEY_DOWN) ty-=0.1;if(key =GLUT_KEY_LEFT) tx-=0.1;if(key=GLUT_KEY_RIGHT) tx+=0.1;glutPostRedisplay();7.主函數(shù)模塊，實(shí)現(xiàn)設(shè)置顯示模式（窗口大小,位置）,

10、調(diào)用函數(shù)操作。int main(int argc, char* argv)glutInit(&argc,argv); / 初始 GLUT.glutInitDisplayMode (GLUT_DEPTH |GLUT_DOUBLE | GLUT_RGB); /設(shè)定顯示模式 glutInitWindowSize(400,400); / 設(shè)定窗口大小glutInitWindowPosition(50,100); / 設(shè)定窗口位置glutCreateWindow("立方體的簡單三維交互式幾何變換"); / 用前面指定參數(shù)創(chuàng)建glutReshapeFunc(reshape);

11、/指定重繪回調(diào)函數(shù)glutDisplayFunc(display); / 進(jìn)行一些初始化工作glutKeyboardFunc( myKeyboard); /指定鍵盤回調(diào)函數(shù) glutSpecialFunc(myspecialKeyboard); /指定鍵盤回調(diào)函數(shù)init();glutMainLoop();/ 進(jìn)入無窮循環(huán)，等待事件處理功能截圖:立方體的平移：上平移下平移：左平移：右平移：放大：縮?。盒D(zhuǎn)：源程序：#include <stdlib.h>#include <GL/glut.h> #include <windows.h>float ratX =

12、60;float ratY = 60;float ratZ = 60;float tx=0;float ty=0;float sf=0;void DrawBox() glBegin(GL_QUADS); /前面 glColor3f(1,0,0); glVertex3f(-1.0f, -1.0f, 1.0f); / 四邊形的左下 glVertex3f( 1.0f, -1.0f, 1.0f); / 四邊形的右下 glVertex3f( 1.0f, 1.0f, 1.0f); / 四邊形的右上 glVertex3f(-1.0f, 1.0f, 1.0f); / 四邊形的左上 / 后面 glColor3f

13、(0,1,0); glVertex3f(-1.0f, -1.0f, -1.0f); / 四邊形的右下 glVertex3f(-1.0f, 1.0f, -1.0f); / 四邊形的右上 glVertex3f( 1.0f, 1.0f, -1.0f); / 四邊形的左上 glVertex3f( 1.0f, -1.0f, -1.0f); / 四邊形的左下 / 頂面 glColor3f(0,0,1); glVertex3f(-1.0f, 1.0f, -1.0f); / 四邊形的左上 glVertex3f(-1.0f, 1.0f, 1.0f); / 四邊形的左下 glVertex3f( 1.0f, 1.0

14、f, 1.0f); / 四邊形的右下 glVertex3f( 1.0f, 1.0f, -1.0f); / 四邊形的右上 / 底面 glColor3f(1,1,0); glVertex3f(-1.0f, -1.0f, -1.0f); / 四邊形的右上 glVertex3f( 1.0f, -1.0f, -1.0f); / 四邊形的左上 glVertex3f( 1.0f, -1.0f, 1.0f); / 四邊形的左下 glVertex3f(-1.0f, -1.0f, 1.0f); / 四邊形的右下 / 右面 glColor3f(0,1,1); glVertex3f( 1.0f, -1.0f, -1.

15、0f); / 四邊形的右下 glVertex3f( 1.0f, 1.0f, -1.0f); / 四邊形的右上 glVertex3f( 1.0f, 1.0f, 1.0f); / 四邊形的左上 glVertex3f( 1.0f, -1.0f, 1.0f); / 四邊形的左下 / 左面 glColor3f(1,0,1); glVertex3f(-1.0f, -1.0f, -1.0f); / 四邊形的左下 glVertex3f(-1.0f, -1.0f, 1.0f); / 四邊形的右下 glVertex3f(-1.0f, 1.0f, 1.0f); / 四邊形的右上 glVertex3f(-1.0f,

16、1.0f, -1.0f); / 四邊形的左上 glEnd();void display()glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); /清空顏色和深度緩存glMatrixMode(GL_MODELVIEW);glLoadIdentity();/gluLookAt(2.0, 2.0, 2.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);glTranslatef(0.0f+tx,0.0f+ty,-4.0f);/平移變換glScalef(1+sf,1+sf,1+sf); /縮放變換glRotatef(ratX, 1.0f, 0

17、.0f, 0.0f);/繞X軸的旋轉(zhuǎn)變換 glRotatef(ratY, 0.0f, 1.0f, 0.0f);/繞Y軸的旋轉(zhuǎn)變換 glRotatef(ratZ, 0.0f, 0.0f, 1.0f);/繞Z軸的旋轉(zhuǎn)變換DrawBox(); glFlush();glutSwapBuffers();void reshape(int w, int h) /重繪回調(diào)函數(shù)，在窗口首次創(chuàng)建或用戶改變窗口尺寸時被調(diào)用glViewport(0, 0, w, h);/ 指定視口的位置和大小glMatrixMode(GL_PROJECTION);glLoadIdentity();/glFrustum(-1.0, 1

18、.0, -1.0, 1.0, 3.1, 10.0);/gluPerspective(45,1,0.1,10.0);glOrtho(-2.0, 2.0, -2.0, 2.0, 2.0, 10.0);void init()glClearColor (1.0, 1.0, 1.0, 1.0); glEnable(GL_DEPTH_TEST); /啟動深度測試模式void myKeyboard(unsigned char key, int x, int y)if(key = 'a' | key = 'A') ratX += 2; ratY += 2; ratZ += 2;if(key = 's' | key = 'S') ratX -= 2; ratY -= 2; ratZ -= 2;if(key = 'j' | key = 'J') sf+=0.1;if(key = 'k' | key = 'K') sf-=0.1; if(key = 'c' | key = 'C')exit(0);glutPostRedisplay(); /重新調(diào)用繪制函數(shù)void myspecialKeyboar