一：开发环境
作者：嘟粥yyds
时间：12月13日
开发工具：Visual Studio
开发环境：OpenGL环境（#include <GL/glut.h>）
二：实现功能
2.1 实现了简易版地月系统
#include <windows.h>#include <GL/glut.h>#define Imagewidth 24GLdouble speed = 0.1, day, month, year, solarcycle;//月亮、地球、太阳的半径GLfloat mr = 0.15, er = 0.3, sr = 0.4;//月亮、地球的公转半径GLfloat mrr = 0.6, err = 2;//条纹纹理GLubyte Image[3 * Imagewidth];//创建条纹纹理void makeStripeImage(void){for (int j = 0; j < Imagewidth; j++) {Image[3 * j] = 94;Image[3 * j + 1] = (GLubyte)((j <= 3) ? 455 : 0);Image[3 * j + 2] = 452;}}/* 参数设置，用于自动生成纹理坐标 */GLfloat sgenparams[] = { 1.0, 1.0, 0.0, 0.0 };void init(){glClearColor(0, 0, 0.1, 1);glTexParameterf(GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_REPEAT);glTexParameterf(GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);glTexParameterf(GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);glTexImage1D(GL_TEXTURE_1D, 0, 4, Imagewidth, 0, GL_RGB, GL_UNSIGNED_BYTE, Image);glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);glTexGenfv(GL_S, GL_OBJECT_PLANE, sgenparams);glEnable(GL_POINT_SMOOTH | GL_LINE_SMOOTH | GL_POLYGON_SMOOTH);}void keyboard(GLubyte key, GLint x, GLint y){if (key == 27) exit(0);}void timer(GLint millis){day += speed * 360 / 0.997;month += speed * 360 / 29.5;year += speed * 360 / 365.2475;solarcycle += speed * 360 / 27.5;glutPostRedisplay();glutTimerFunc(millis, timer, millis);}void reshape(GLint w, GLint h){glViewport(0, 0, w, h);glMatrixMode(GL_PROJECTION);glLoadIdentity();gluPerspective(30, (GLfloat)w / h, 1, 1000);glTranslatef(0, 0, -8);glRotatef(30, 1, 0, 0);glMatrixMode(GL_MODELVIEW);glLoadIdentity();}void light(GLfloat r){GLfloat pos[][4] ={{r,0,0,1},{-r,0,0,1},{0,r,0,1},{0,-r,0,1},{0,0,r,1},{0,0,-r,1}};GLfloat params[] = { 0.9,0.9,0.9,1 };for (int i = 0; i < 6; i++){glLightfv(GL_LIGHT0 + i, GL_POSITION, pos[i]);glLightfv(GL_LIGHT0 + i, GL_DIFFUSE, params);glEnable(GL_LIGHT0 + i);}}void material(GLfloat r, GLfloat g, GLfloat b){GLfloat params[] = { r,g,b,1 };glEnable(GL_LIGHTING);glMaterialfv(GL_FRONT, GL_DIFFUSE, params);}void color(GLfloat r, GLfloat g, GLfloat b){glDisable(GL_LIGHTING);glColor3f(r, g, b);}// 经纬线void wire(GLfloat r){color(0.5, 0.5, 0.5);glutWireSphere(1.005*r, 24, 12);}// 自转轴void axle(GLfloat r){color(0, 0, 0);glBegin(GL_LINE);glVertex3f(0, 0, -r * 1.2);glVertex3f(0, 0, r*1.2);glEnd();}//地球材质void material_earth(void){glPushAttrib(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_CURRENT_BIT);glEnable(GL_COLOR_MATERIAL);GLfloat mat_specular[] = { 1.0, 0.0, 0.0, 1.0 };//材质镜面反射颜色参数GLfloat mat_shininess[] = { 50.0 }; // 镜面反射指数参数GLfloat mat_diffuse[] = { 0.0,0.0,1.0,1.0 }; //材质散射颜色 GLfloat white_light[] = { 1.0, 0.0,0.0, 1.0 };glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); //材质镜面反射颜色glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess); //镜面反射指数glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse); //材质的散射颜色glMaterialfv(GL_FRONT, GL_AMBIENT, white_light);//材质的环境颜色 glPopAttrib();}//月球材质void material_moon(void){glPushAttrib(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_CURRENT_BIT);glEnable(GL_COLOR_MATERIAL);GLfloat mat_specular[] = { 1.0, 0.0, 0.0, 1.0 };//材质镜面反射颜色参数GLfloat mat_shininess[] = { 50.0 }; // 镜面反射指数参数GLfloat mat_diffuse[] = { 0.0,0.0,1.0,1.0 }; //材质散射颜色 GLfloat white_light[] = { 1.0, 0.0,0.0, 1.0 };glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); //材质镜面反射颜色glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess); //镜面反射指数glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse); //材质的散射颜色glMaterialfv(GL_FRONT, GL_AMBIENT, white_light);//材质的环境颜色 glPopAttrib();}void sun(GLfloat r){glPushMatrix();glRotatef(90, -1, 0, 0);color(0.9, 0.1, 0.1);GLfloat sun_emission[] = { 0.1f, 0.0f, 0.0f, 1.0f };//太阳颜色glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, sun_emission);glutSolidSphere(r, 60, 60);wire(r);glPopMatrix();}void earth(GLfloat r){glPushMatrix();material_earth();glRotatef(90, -1, 0, 0);material(0.1, 0.1, 0.9);GLfloat earth_emission[] = { 0.2f, 0.4f, 0.9f, 1.0f };//地球颜色glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, earth_emission);glutSolidSphere(r, 50, 50);wire(r);glPopMatrix();}void moon(GLfloat r){glPushMatrix();material_moon();glRotatef(90, -1, 0, 0);material(0.75, 0.75, 0.1);GLfloat moon_emission[] = { 0.502f, 0.5411f, 0.529f, 1.0f };//月亮颜色glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, moon_emission);glutSolidSphere(r, 50, 50);wire(r);glPopMatrix();}void display(){glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);glLoadIdentity();// 太阳光照、太阳自转light(sr);glPushMatrix();glRotatef(solarcycle, 0, 1, 0);sun(sr);glPopMatrix();// 地球公转glRotatef(year, 0, 1, 0);glTranslatef(err, 0, 0);glRotatef(-year, 0, 1, 0);glRotatef(-23.5, 0, 0, 1);// 地球自转glPushMatrix();glRotatef(day, 0, 1, 0);earth(er);glPopMatrix();// 月球公转glRotatef(month, 0, 1, 0);glTranslatef(mrr, 0, 0);moon(mr);glutSwapBuffers();}int main(){glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);glutCreateWindow("嘟粥yyds");glutFullScreen();glutKeyboardFunc(keyboard);init();glutTimerFunc(25, timer, 25);glutReshapeFunc(reshape);glutDisplayFunc(display);glEnable(GL_DEPTH_TEST);glutMainLoop();return 0;}
2.2 运行结果
地月系统
