一个简单的三维图形
代码：
#include <GL/glut.h> #include <windows.h> #include <stdlib.h> #include <math.h> #define GLUT_DISABLE_ATEXIT_HACK GLfloat AngleX; GLfloat AngleY; GLfloat sca[3] = {1,1,1}; GLfloat tra[3] = {0,0,0}; void display1(){ //sphere，cone glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); glPushMatrix(); { glRotatef(AngleX, 1.0f, 0.0f, 0.0f); glRotated(AngleY, 0.0f, 1.0f, 0.0f); glScalef(sca[0], sca[1], sca[2]); glTranslatef(tra[0], tra[1], tra[2]); glBegin(GL_TRIANGLE_FAN); glColor3f(0.0f, 0.0f, 0.0f); glutWireSphere(18, 14, 14); glutWireCone(30, 40, 30, 30); glEnd(); } glPopMatrix(); glutSwapBuffers(); } void reshape(int w, int h){ GLfloat aspect = (GLfloat)w / (GLfloat)h; GLfloat nRange = 100.0f; glViewport(0, 0, w, h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); if (w <= h){ glOrtho(-nRange, nRange, -nRange*aspect, nRange*aspect, -nRange, nRange); } else glOrtho(-nRange, nRange, -nRange / aspect, nRange / aspect, -nRange, nRange); } void Skeyboard(GLint key, GLint x, GLint y){ //control Rotate if (key == GLUT_KEY_UP) AngleX -= 5.0f; if (key == GLUT_KEY_DOWN) AngleX += 5.0f; if (key == GLUT_KEY_LEFT) AngleY -= 5.0f; if (key == GLUT_KEY_RIGHT) AngleY += 5.0f; if (AngleX > 355.0f) AngleX = 0.0f; if (AngleX < 0.0f) AngleX = 355.0f; glutPostRedisplay(); } void Nkeyboard(unsigned char key, int x, int y){ //control scale and translate if (key == 'j'){ for (int i = 0; i < 3; i++) sca[i] += 0.1; } if (key == '-'){ for (int i = 0; i < 3; i++) sca[i] -= 0.1; } if (key == 'w'){ tra[1]++; } if (key == 's'){ tra[1]--; } if (key == 'a'){ tra[0]--; } if (key == 'd'){ tra[0]++; } if (key = 'q'){ tra[2]++; } if (key = 'e'){ tra[2]--; } glutPostRedisplay(); } void init(){ AngleX = 45.0f; AngleY = 315.f; glClearColor(1.0f, 1.0f, 1.0f, 1.0f); glEnable(GL_DEPTH_TEST); glEnable(GL_DITHER); glShadeModel(GL_SMOOTH); } int main(int argc, char *argv[]){ glutInit(&argc, argv); glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA); glutInitWindowPosition(100, 100); glutInitWindowSize(800, 600); glutCreateWindow("三维图形"); glutReshapeFunc(reshape); glutDisplayFunc(display1); glutSpecialFunc(Skeyboard); glutKeyboardFunc(Nkeyboard); init(); glutMainLoop(); return 0; }
运行结果：
你以为我会求你？
