CPP_TeaPot.zip_CPP_TeaPot_glutSolidTeapot_glutsolid_glutsolidtea

#define GLUT_DISABLE_ATEXIT_HACK #include <stdlib.h> #include <GL/glut.h> GLfloat planes[]= {-1.0, 0.0, 1.0, 0.0}; GLfloat planet[]= {0.0, -1.0, 0.0, 1.0}; GLfloat vertices[][3] = {{-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}}; GLfloat colors[][4] = {{0.0,0.0,0.0,0.5},{1.0,0.0,0.0,0.5}, {1.0,1.0,0.0,0.5}, {0.0,1.0,0.0,0.5}, {0.0,0.0,1.0,0.5}, {1.0,0.0,1.0,0.5}, {1.0,1.0,1.0,0.5}, {0.0,1.0,1.0,0.5}}; typedef struct lightStruct { GLfloat position[4]; GLfloat ambient[4]; GLfloat diffuse[4]; GLfloat specular[4]; } lightStruct;//定义光源数据结构 lightStruct light= { {10.0,1.0,0.0,1.0}, //灯光位置 {0.0,0.0,0.0,1.0}, //环境光 {3.0,2.0,0.0,1.0}, //漫反射光 {0.0,0.0,0.0,1.0}, //镜面光 }; void setLight() { glLightfv(GL_LIGHT0, GL_POSITION, light.position); glLightfv(GL_LIGHT0, GL_AMBIENT, light.ambient); glLightfv(GL_LIGHT0, GL_DIFFUSE, light.diffuse); glLightfv(GL_LIGHT0, GL_SPECULAR, light.specular); glEnable(GL_LIGHT0); glEnable(GL_LIGHTING); glEnable(GL_DEPTH_TEST); } void polygon(int a, int b, int c , int d) { glBegin(GL_POLYGON); /* glColor4fv(colors[a]);*/ /* glTexCoord2f(0.0,0.0); */ glVertex3fv(vertices[a]); /* glColor4fv(colors[b]); */ /* glTexCoord2f(0.0,1.0); */ glVertex3fv(vertices[b]); /* glColor4fv(colors[c]); */ /* glTexCoord2f(1.0,1.0); */ glVertex3fv(vertices[c]); /* glColor4fv(colors[d]); */ /* glTexCoord2f(1.0,0.0); */ glVertex3fv(vertices[d]); glEnd(); } void colorcube(void) { /* 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); } static GLfloat theta[] = {0.0,0.0,0.0}; static GLint axis = 2; void display(void) { //清除显存 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); setLight(); //以下代码用来控制旋转的方向 glRotatef(theta[0], 1.0, 0.0, 0.0); glRotatef(theta[1], 0.0, 1.0, 0.0); glRotatef(theta[2], 0.0, 0.0, 1.0); /* colorcube();*/ //以下代码用来控制茶壶大小 glutSolidTeapot(1.0); //交换缓冲区 glutSwapBuffers(); } void spinCube() { //控制旋转的角度和速度 theta[axis] += 0.1; if( theta[axis] > 360.0 ) theta[axis] -= 360.0; /* display(); */ glutPostRedisplay(); } //用来捕获鼠标点击的情况并给相应的角度控制变量赋值 void mouse(int btn, int state, int x, int y) { if(btn==GLUT_LEFT_BUTTON && state == GLUT_DOWN) axis = 0; if(btn==GLUT_MIDDLE_BUTTON && state == GLUT_DOWN) axis = 1; if(btn==GLUT_RIGHT_BUTTON && state == GLUT_DOWN) axis = 2; } void myReshape(int w, int h) { //控制显示图像在窗口中的大小 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); else glOrtho(-2.0 * (GLfloat) w / (GLfloat) h, 2.0 * (GLfloat) w / (GLfloat) h, -2.0, 2.0, -10.0, 10.0); glMatrixMode(GL_MODELVIEW); } //响应键盘点击事件，改变茶壶旋转方向 void key(char k, int x, int y) { if(k == '1') axis = 0; if(k == '2') axis = 1; if(k == '3') axis = 2; } void main(int argc, char **argv) { GLubyte image[64][64][3]; int i, j, r, c; for(i=0;i<64;i++) { for(j=0;j<64;j++) { c = ((((i&0x8)==0)^((j&0x8))==0))*255; image[i][j][0]= (GLubyte) c; image[i][j][1]= (GLubyte) c; image[i][j][2]= (GLubyte) c; } } glutInit(&argc, argv); glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH); glutInitWindowSize(500, 500); glutCreateWindow("计算机技术 李志兰 学号09130137"); glutReshapeFunc(myReshape); glutDisplayFunc(display); glutIdleFunc(spinCube); glutMouseFunc(mouse); glEnable(GL_DEPTH_TEST); glEnable(GL_TEXTURE_2D); /*glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR); glTexGenfv(GL_S, GL_OBJECT_PLANE, planes); glEnable(GL_TEXTURE_GEN_S); glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR); glTexGenfv(GL_T, GL_OBJECT_PLANE, planet); glEnable(GL_TEXTURE_GEN_T);*/ /* glPixelStorei(GL_UNPACK_ALIGNMENT,1); */ /* GlTexImage2D(Glenum target,Glint level,Glint internalformat,Glsizei width,Glsizei height,Glint border,Glenum format,Glenum type,const Glvoid *pixels) targe 必须是GL_TEXTURE_2D。 level: 系统自动生成纹理 (MipMap:1,2)，当设置为0时，单分辨率纹理图像，设置为1时候，分辨率为原大小的1/2,必须大于等于0 internalformat:有效取值范围为 GL_ALPHA,GL_RGB,GL_RGBA,GL_LUMINANCE,GL_LUMINANCE_ALPHA. 这个值和format参数必须是一样的。 GL_ALPHA (0, 0, 0, A) GL_LUMINANCE (1, 1, 1, 1) GL_LUMINANCE_ALPHA (1, 1, 1, A) GL_RGB (R, G, B, 1) GL_RGBA (R, G, B, A) Width和Height必须是2的整数幂，如果有边界，则必须是2的整数幂+2。 Border为0代表无边框,1代表纹理有边框 format和internalformat一样。 Type: 此参数决定了pixel中的一个像素的比特组成，GL_UNSIGNED_BYTE为1位。此位通常为元像素(r+g+b)/3得出: */ //此处显示的是马赛克的贴图 glTexImage2D(GL_TEXTURE_2D,0,3,64,64,0,GL_RGB,GL_UNSIGNED_BYTE, image); glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_REPEAT); glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_REPEAT); glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST); glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST); /* glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER,GL_NEAREST_MIPMAP_NEAREST);*/ /* gluBuild2DMipmaps(GL_TEXTURE_2D,3,64,64,GL_RGB,GL_UNSIGNED_BYTE, image);*/ /* glEnable(GL_BLEND); glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);*/ glutKeyboardFunc(key); glClearColor(1.0,0.5,1.0,1.0); glutMainLoop(); }