OpenGL绘制基本三维图形

OpenGL绘制基本三维图形

主要是库函数的调用，后期加上光照渲染会更好。

 代码：

#include <windows.h>
#ifdef __APPLE__
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#endif
#include <bits/stdc++.h>
using namespace std;
#include <stdlib.h>static GLsizei iMode = 1;
static GLfloat xRot = 0;
static GLfloat yRot = 0;
GLUquadricObj *obj;void Initial(){glClearColor(1, 1, 1, 1);glColor3f(0, 0, 0);obj = gluNewQuadric();gluQuadricDrawStyle(obj, GLU_LINE);
}void ChangeSize(int w, int h){glViewport(0, 0, w, h);glMatrixMode(GL_PROJECTION);glLoadIdentity();gluOrtho2D(-1.5, 1.5, -1.5, 1.5);
}
void Display(){glClear(GL_COLOR_BUFFER_BIT);glMatrixMode(GL_MODELVIEW);glLoadIdentity();glRotatef(xRot, 1, 0, 0);glRotatef(yRot, 0, 1, 0);switch(iMode){case 1:glutWireTetrahedron(); break;case 2:glutSolidTetrahedron(); break;case 3:glutWireOctahedron(); break;case 4:glutSolidOctahedron(); break;case 5:glutWireSphere(1, 15, 15); break;case 6:glutSolidSphere(1, 15, 15); break;case 7:glutWireTeapot(1); break;case 8:glutSolidTeapot(1); break;case 9:gluSphere(obj, 1, 15, 15); break;case 10:gluCylinder(obj, 1, 0, 1, 15, 15); break;case 11:gluPartialDisk(obj, 0.3, 0.8, 15, 15, 30, 260); break;default: break;}glFlush();
}void ProcessMenu(int value){iMode = value;glutPostRedisplay();
}
void SpecialKeys(int key, int x, int y){if(key == GLUT_KEY_UP) xRot -= 5;if(key == GLUT_KEY_DOWN) xRot += 5;if(key == GLUT_KEY_LEFT) yRot -= 5;if(key == GLUT_KEY_RIGHT) yRot += 5;if(xRot > 356) xRot = 0;if(xRot < -1) xRot = 355;if(yRot > 356) yRot = 0;if(yRot < -1) yRot = 355;glutPostRedisplay();
}int main(int argc, char** argv){glutInit(&argc, argv);glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);glutInitWindowSize(400, 400);glutInitWindowPosition(100, 100);glutCreateWindow("Hello");int nGlutPolyMenu = glutCreateMenu(ProcessMenu);glutAddMenuEntry("线框正四面体", 1);glutAddMenuEntry("实体正四面体", 2);glutAddMenuEntry("线框正八面体", 3);glutAddMenuEntry("实体正八面体", 4);int nGlutCurveMenu = glutCreateMenu(ProcessMenu);glutAddMenuEntry("线框球面", 5);glutAddMenuEntry("实体球面", 6);glutAddMenuEntry("线框茶壶", 7);glutAddMenuEntry("实体茶壶", 8);int nGluCurveMenu = glutCreateMenu(ProcessMenu);glutAddMenuEntry("线框球面", 9);glutAddMenuEntry("线框圆锥面", 10);glutAddMenuEntry("线框圆环面", 11);int nMainMenu = glutCreateMenu(ProcessMenu);glutAddSubMenu("GLUT多面体", nGlutPolyMenu);glutAddSubMenu("GLUT曲面", nGlutCurveMenu);glutAddSubMenu("GLU曲面", nGluCurveMenu);glutAttachMenu(GLUT_RIGHT_BUTTON);glutDisplayFunc(Display);glutReshapeFunc(ChangeSize);glutSpecialFunc(SpecialKeys);Initial();glutMainLoop();
}

效果