实心物体创建
代码如下:
#include <windows.h> //#include <GLUT/glut.h> #include <GL/glut.h> #include <math.h> #include <iostream> using namespace std; #define GL_PI 3.1415f void RenderScene() { GLfloat x,y,angle; int iPivot = 1; glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); GLboolean bCull = true; GLboolean bDepth = true; GLboolean bOutline = true; if(bCull) glEnable(GL_CULL_FACE); else glDisable(GL_CULL_FACE); if(bDepth) glEnable(GL_DEPTH_TEST); else glDisable(GL_DEPTH_TEST); if(bOutline) glPolygonMode(GL_BACK,GL_LINE); else glPolygonMode(GL_BACK,GL_FILL); glPushMatrix(); glRotatef(45.0f,1.0f,0.0f,0.0f); glRotatef(45.0f,0.0f,1.0f,0.0f); glBegin(GL_TRIANGLE_FAN); glVertex3f(0.0f,0.0f,75.0f); for(angle = 0.0f;angle < (2.0*GL_PI);angle += (GL_PI)/8.0) { x = 50.0f*sin(angle); y = 50.0f*cos(angle); if((iPivot %2)==0) glColor3f(0.0f,0.0f,1.0f); else glColor3f(1.0f,0.0f,0.0f); iPivot++; glVertex2f(x,y); } glEnd(); glBegin(GL_TRIANGLE_FAN); glVertex2f(0.0f,0.0f); for(angle = 0.0f;angle < (2.0f*GL_PI);angle += (GL_PI/8.0f)) { x = 50.0f*sin(angle); y = 50.0f*cos(angle); if((iPivot %2)==0) glColor3f(0.0f,0.0f,1.0f); else glColor3f(1.0f,0.0f,0.0f); iPivot++; glVertex2f(x,y); } glEnd(); glPopMatrix(); glutSwapBuffers(); } void ChangeSize(GLsizei w,GLsizei h) { if(h==0) h = 1; GLfloat aspectRatio = (GLfloat)w/(GLfloat)h; glViewport(0,0,w,h); glMatrixMode(GL_PROJECTION); glLoadIdentity(); if(w<=h) glOrtho(-100,100,-100/aspectRatio,100/aspectRatio,100.0,-100.0); else glOrtho(-100*aspectRatio,100*aspectRatio,-100,100,100.0,-100.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } void SetupRC() { glClearColor(0.0f,0.0f,0.0f,1.0f); glColor3f(1.0f,0.0f,0.0f); glShadeModel(GL_FLAT); glFrontFace(GL_CW); } int main(int argc, char *argv[]) { glutInit(&argc,argv); glutInitDisplayMode(GLUT_DOUBLE|GLUT_RGB|GLUT_DEPTH); glutInitWindowSize(800,600); glutCreateWindow("Simple"); glutDisplayFunc(RenderScene); glutReshapeFunc(ChangeSize); SetupRC(); glutMainLoop(); return 0; }
态度决定高度,细节决定成败,