OpenGL_日地月模型动画

#include <gl/glaux.h> #include "gl/glut.h" #include <stdio.h> #include <math.h> #define GL_LIGHT_MODEL_COLOR_CONTROL 0x81F8 #define GL_SEPARATE_SPECULAR_COLOR 0x81FA const int width = 800, height = 600; const double half_width=1.0; GLfloat xRotation = 0.0f, yRotation = 0.0f; const GLfloat rotSpeed = 0.01f; bool bLButtonDown = false; bool bMButtonDown = false; bool bRButtonDown = false; bool bRKeyDown = false; bool bLKeyDown = false; GLint lastPx, lastPy; GLuint textures=0; GLuint textures2=0; GLuint textures3=0; GLfloat SclFac=2.0f, lastSclFac=1.0f; GLfloat xTransl = 0.7f, yTransl =0.7f; GLfloat ambientProperties[] = {0.5f, 0.5f, 0.5f, 0.5f}; GLfloat diffuseProperties[] = {1.0f, 1.0f, 1.0f, 1.0f}; GLfloat specularProperties[] = {1.0f, 1.0f, 1.0f, 1.0f}; GLfloat lightPos[] = {0.0f, 0.0f, 0.0f, 0.0f}; float roll = 0.0f ; float roll2 = 0.0f ; float roll3=0.0f; GLUquadricObj *q; GLfloat xrot=0.1; void init(){ glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); q = gluNewQuadric(); gluQuadricNormals(q, GL_SMOOTH); gluQuadricTexture(q, GL_TRUE); glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP); glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP); glPolygonMode(GL_FRONT_AND_BACK,GL_FILL); //sun AUX_RGBImageRec *image3 = NULL; image3 = auxDIBImageLoad("sun.bmp"); if(image3 != NULL) { printf("sun_success "); glGenTextures(1,&textures3); glBindTexture(GL_TEXTURE_2D,textures3); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, image3->sizeX,image3->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, image3->data); glEnable(GL_TEXTURE_2D); if(image3->data !=NULL) { delete[] image3->data; } delete image3; } //earth AUX_RGBImageRec *image = NULL; image = auxDIBImageLoad("earth.bmp"); if(image != NULL) { printf("earth_success "); glGenTextures(1,&textures); glBindTexture(GL_TEXTURE_2D,textures); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, image->sizeX,image->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, image->data); glEnable(GL_TEXTURE_2D); if(image->data !=NULL) { delete[] image->data; } delete image; } //moon AUX_RGBImageRec *image2 = NULL; image2 = auxDIBImageLoad("moon.bmp"); if(image2 != NULL) { printf("moon_success "); glGenTextures(1,&textures2); glBindTexture(GL_TEXTURE_2D,textures2); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, image2->sizeX,image2->sizeY, 0, GL_RGB, GL_UNSIGNED_BYTE, image2->data); glEnable(GL_TEXTURE_2D); if(image2->data !=NULL) { delete[] image2->data; } } delete image2; glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR); } void keyboard(int key, int x, int y) { switch(key){ case GLUT_KEY_RIGHT: yRotation -= (GLfloat) (lastPx - x) * rotSpeed; break; case GLUT_KEY_LEFT: yRotation -= -(GLfloat) (lastPx - x) * rotSpeed; break; case GLUT_KEY_UP: xRotation -= -(GLfloat) (lastPy - y) * rotSpeed; break; case GLUT_KEY_DOWN: xRotation -= (GLfloat) (lastPy - y) * rotSpeed; break; } } void mouse(int button, int state, int x, int y) { switch (button) { case GLUT_LEFT_BUTTON: if (bLButtonDown = state == GLUT_DOWN) { lastPx = x; lastPy = y; } break; case GLUT_MIDDLE_BUTTON: if (bMButtonDown = state == GLUT_DOWN) { lastPx = x; lastPy = y; } break; case GLUT_RIGHT_BUTTON: if (bRButtonDown = state == GLUT_DOWN) { lastPy = y; lastSclFac = SclFac; } break; default: break; } } void motion(int x, int y) { if (bLButtonDown) { yRotation -= (GLfloat) (lastPx - x) * rotSpeed; xRotation -= (GLfloat) (lastPy - y) * rotSpeed; } else if (bRButtonDown) { GLfloat dy = y - lastPy; if (dy > 0.0f) { dy = sqrt(dy); SclFac = lastSclFac * dy; } else if (dy < 0.0f) { dy = sqrt(-dy); SclFac = lastSclFac / dy; } } else if (bMButtonDown) { GLint viewport[4]; glGetIntegerv(GL_VIEWPORT, viewport); GLfloat halfHeight = viewport[3] >> 1; GLfloat reci = 1.0 / SclFac; xTransl += (GLfloat) (x - lastPx) * reci / halfHeight; yTransl -= (GLfloat) (y - lastPy) * reci / halfHeight; lastPx = x; lastPy = y; } glutPostRedisplay(); } void reshape(int x, int y) { gluLookAt(0.0,0.0,10.0,0.0,0.0,0.0,0.0,1.0,0.0); glMatrixMode(GL_PROJECTION); glLoadIdentity(); GLdouble aspect =(GLdouble)x/(GLdouble)y; gluPerspective(45.0*0.5,aspect,0.1,100.0); glViewport(0,0,x,y); } void Rotate() { _sleep(20); roll += 0.1; roll2 +=-1.0; if (roll > 360.0) { roll -=360.0; } if (roll2 > 360.0) { roll2 -=360.0; } glutPostRedisplay(); } void update(int value) { xrot = 0.1f; value = 25; glutPostRedisplay(); //Tell GLUT that the scene has changed glutTimerFunc(value, update, 0);//Tell GLUT to call update again in 25 milliseconds } void display() { glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); // 清除颜色缓存内容 glMatrixMode(GL_MODELVIEW); /* glPushMatrix(); glRotatef(xRotation, 1.0f, 0.0f, 0.0f); glRotatef(yRotation, 0.0f, 1.0f, 0.0f); glLightModeli(GL_LIGHT_MODEL_COLOR_CONTROL, GL_SEPARATE_SPECULAR_COLOR); glScalef(SclFac,SclFac,SclFac); glTranslatef(xTransl,yTransl,0.0f); cubic(); glPopMatrix(); */ //sun glPushMatrix(); glRotatef(xRotation, 1.0f, 0.0f, 0.0f); glRotatef(yRotation, 0.0f, 1.0f, 0.0f); glRotatef(roll3,0.0f, 0.0f, 1.0f); glScalef(SclFac,SclFac,SclFac); glTranslatef(0.0f,0.0f,0.0f); glBindTexture(GL_TEXTURE_2D,textures3); gluSphere(q, 0.5f, 100, 100); glPopMatrix(); //earth glPushMatrix(); glRotatef(roll,0.0f, 0.0f, 1.0f); glScalef(SclFac,SclFac,SclFac); glTranslatef(xTransl,yTransl,1.0f); glBindTexture(GL_TEXTURE_2D,textures); gluSphere(q, 0.1f, 100, 100); //moon glPushMatrix(); glRotatef(roll2,0.0f, 0.0f, 1.0f); glScalef(SclFac,SclFac,SclFac); glTranslatef(0.05f,0.05f,0.0f); glBindTexture(GL_TEXTURE_2D,textures2); gluSphere(q, 0.01f, 100, 100); glPopMatrix(); glPopMatrix(); glFlush(); // 刷新 glEnd(); } int main(int argc, char *argv[]) { glutInit(&argc, argv); glutInitWindowSize(width, height); glutCreateWindow(argv[0]); init(); glutDisplayFunc(display); glutReshapeFunc(reshape); glutMouseFunc(mouse); glutMotionFunc(motion); glutSpecialFunc(keyboard); glutIdleFunc(display); glutIdleFunc(Rotate); glutTimerFunc(25, update, 0); glutMainLoop(); return 0; }