#include#include#include#define SOLID 1
#define WIRE 2
int moveX,moveY;
int spinX = 0;
int spinY = 0;
int des = 0;
void init() {
? //定義光源的顏色和位置
? GLfloat ambient[] = { 0.5, 0.8, 0.1, 0.1 };?
? GLfloat diffuse[] = { 1.0, 1.0, 1.0, 1.0 };?
? GLfloat position[] = { -80.0, 50.0, 25.0, 1.0 };?
? //選擇光照模型
? GLfloat lmodel_ambient[] = { 0.4, 0.4, 0.4, 1.0 };?
? GLfloat local_view[] = { 0.0 };?
? glClearColor(0.0, 0.0, 0.0, 0.0);?
? glShadeModel(GL_SMOOTH);?
? //設(shè)置環(huán)境光
? glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);?
? //設(shè)置漫射光
? glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse);?
? //設(shè)置光源位置
? glLightfv(GL_LIGHT0, GL_POSITION, position);?
? glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);?
? glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER, local_view);?
? //啟動(dòng)光照
? glEnable(GL_LIGHTING);?
? //啟用光源
? glEnable(GL_LIGHT0);?
}
//畫球
void drawBall(double R, double x, double y,double z, int MODE) {
glPushMatrix();
glTranslated(x,y,z);
if (MODE == SOLID) {
glutSolidSphere(R,20,20);
} else if (MODE ==WIRE) {
glutWireSphere(R,20,20);
}
glPopMatrix();
}
//畫半球
void drawHalfBall(double R, double x, double y,double z, int MODE) {
glPushMatrix();
glTranslated(x,y,z);
GLdouble eqn[4]={0.0, 1.0, 0.0, 0.0};
glClipPlane(GL_CLIP_PLANE0,eqn);
glEnable(GL_CLIP_PLANE0);
if (MODE == SOLID) {
glutSolidSphere(R,20,20);
} else if (MODE ==WIRE) {
glutWireSphere(R,20,20);
}
glDisable(GL_CLIP_PLANE0);
glPopMatrix();
}
//畫長(zhǎng)方體
void drawSkewed(double l, double w, double h, double x, double y, double z, int MODE) {
glPushMatrix();
glScaled(l, w, h);
glTranslated(x, y, z);
if (MODE == SOLID) {
glutSolidCube(1);
} else if (MODE ==WIRE) {
glutWireCube(1);
}
glPopMatrix();
}
void display(void) {
//清除緩沖區(qū)顏色
glClear(GL_COLOR_BUFFER_BIT);
//定義白色
glColor3f(1.0, 1.0, 1.0);
//圓點(diǎn)放坐標(biāo)中心
glLoadIdentity();?
//從哪個(gè)地方看
gluLookAt(-2.0, -1.0, 20.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0);
glPushMatrix();
glRotated(spinX, 0, 1, 0);
glRotated(spinY, 1, 0, 0);
glTranslated(0, 0, des);
//頭
drawBall(2, 0, 1, 0, SOLID);
//身體
drawSkewed(5, 4.4, 4, 0, -0.75, 0, SOLID);
//肩膀
drawHalfBall(1, 3.5, -2.1, 0, SOLID);
drawHalfBall(1, -3.5, -2.1, 0, SOLID);
//胳膊
drawSkewed(1, 3, 1, 3.5, -1.3, 0, SOLID);
drawSkewed(1, 3, 1, -3.5, -1.3, 0, SOLID);
//手
drawBall(1, 3.5, -6.4, 0, SOLID);
drawBall(1, -3.5, -6.4, 0, SOLID);
//腿
drawSkewed(1.2, 3, 2, 1, -2.4, 0, SOLID);
drawSkewed(1.2, 3, 2, -1, -2.4, 0, SOLID);
//腳
drawSkewed(1.5, 1, 3, 0.9, -9.2, 0, SOLID);
drawSkewed(1.5, 1, 3, -0.9, -9.2, 0, SOLID);
glPopMatrix();
? ? glutSwapBuffers();
}
//鼠標(biāo)點(diǎn)擊事件
void mouseClick(int btn, int state, int x, int y) {
? ? moveX = x;
moveY = y;
GLfloat ambient[] = { (float)rand() / RAND_MAX, (float)rand() / RAND_MAX, (float)rand() / RAND_MAX, 0.1 };?
//設(shè)置環(huán)境光
glLightfv(GL_LIGHT0, GL_AMBIENT, ambient);?
//啟用光源
glEnable(GL_LIGHT0);?
}
//鍵盤事件
void keyPressed(unsigned char key, int x, int y) {
? ? switch (key) {
? ? case 'a':
? ? ? ? spinX -= 2;
? ? ? ? break;
? ? case 'd':
? ? ? ? spinX += 2;?
? ? ? ? break;
? ? case 'w':
? ? ? ? des += 2;
? ? ? ? break;
? ? case 's':
? ? ? ? des -= 2;
break;
}
glutPostRedisplay();
}
// 鼠標(biāo)移動(dòng)事件
void mouseMove(int x, int y) {
int dx = x - moveX;
int dy = y - moveY;
printf("dx;%dx,dy:%dy\n",dx,dy);
spinX += dx;
spinY += dy;
glutPostRedisplay();
moveX = x;
moveY = y;
}
void reshape(int w, int h) {
//定義視口大小
glViewport(0, 0, (GLsizei) w, (GLsizei) h);
//投影顯示
glMatrixMode(GL_PROJECTION);
//坐標(biāo)原點(diǎn)在屏幕中心
glLoadIdentity();
//操作模型視景
gluPerspective(60.0, (GLfloat) w/(GLfloat) h, 1.0, 20.0);
glMatrixMode(GL_MODELVIEW);
}
int main(int argc, char** argv) {
//初始化
glutInit(&argc, argv);
//設(shè)置顯示模式
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
//初始化窗口大小
glutInitWindowSize(500, 500);
//定義左上角窗口位置
glutInitWindowPosition(100, 100);
//創(chuàng)建窗口
glutCreateWindow(argv[0]);
//初始化
init();
//顯示函數(shù)
glutDisplayFunc(display);
//窗口大小改變時(shí)的響應(yīng)
glutReshapeFunc(reshape);
//鼠標(biāo)點(diǎn)擊事件辙售，鼠標(biāo)點(diǎn)擊或者松開(kāi)時(shí)調(diào)用
? ? glutMouseFunc(mouseClick);
//鼠標(biāo)移動(dòng)事件，鼠標(biāo)按下并移動(dòng)時(shí)調(diào)用
? ? glutMotionFunc(mouseMove);
//鍵盤事件
glutKeyboardFunc(keyPressed);
//循環(huán)
glutMainLoop();
return 0;
}
