计算机图形学——二维卡通人物交互设计

根据OpenGL提供的直线，多边形绘制算法（橡皮筋效果），实现基于鼠标交互的卡通人物设计与绘制。使用颜色填充与反走样技术对卡通人物外貌以及衣着进行绘制。实现对卡通人物轮廓的交互控制，点击鼠标左键可以对人物五官位置进行拖拽移动调整。按“↑”按键能够实现卡通人物绕坐标原点（或指定点）进行旋转。

附加要求：选中其中的一个多边形区域，点击鼠标右键，弹出一个菜单，可以对该区域进行不同颜色的选择。可以设计发型、衣服的模版，当作文件进行存储，可以在窗口最右边设计一个模板库，显示保存的发型与衣服，拖拽到卡通人物上可以为卡通人物进行发型或者衣服的替换。

#include<iostream>
#include <windows.h>
#include <GL/glu.h>
#include <GL/gl.h>
#include <GL/glut.h>
#include <math.h>
#include <stdio.h>
using namespace std;

#define MAX_CHAR    128

int window_width = 600;
int window_height = 400;

#define LEFT_EYE    1
#define RIGHT_EYE   2
#define LEFT_ARM    3
#define RIGHT_ARM   4
#define JU_PAI      5
#define MOUTH       6
#define HAIR        7
#define TIE         8

#define BUFSIZE     512

GLuint selectBuf[BUFSIZE];

const double PI = 3.1415926;

static GLenum mode = GL_RENDER;

//判断被选中的是哪个物体
BOOL leftEye_Selected;
BOOL rightEye_selected;
BOOL leftArm_Selected;
BOOL rightArm_Selected;
BOOL juPai_Selected;
BOOL mouth_Selected;
BOOL hair_Selected;
BOOL tie_Selected;

/*
drawJuPai(100, 50);
drawMoxigan(220, 150);
glLoadName(RIGHT_ARM);
drawRightArm(-100, 0);

glLoadName(LEFT_ARM);
drawLeftArm(-100, 0);

glLoadName(MOUTH);
drawMouth(-100,60);
//画眼睛
glLoadName(LEFT_EYE);
drawLeftEye(-65,50);

glLoadName(RIGHT_EYE);
drawRightEye(-135,50);
*/
//物体初始坐标
GLuint leftEye[2] = { -65, 50 };
GLuint rightEye[2] = { -135, 50 };
GLuint leftArm[2] = { -50, 0 };
GLuint rightArm[2] = { -150, 0 };
GLuint juPai[2] = { 100, 50 };
GLuint mouth[2] = { -100, 60 };
GLuint hair[2] = { 220, 150 };
GLuint tie[2] = {100,150};

int body[2] = { -100, 50 };
static int theta = 0;

//获取被选中改变颜色的物体
int selectedToChangeColor = -1;
//颜色数组
double lefteye_color[3] = { 1., 1., 1. };
double righteye_color[3] = { 1., 1., 1. };
double leftarm_color[3] = { 1., 1., 1. };
double rightarm_color[3] = { 1., 1., 1. };
double mouth_color[3] = { 1, 0.8, 0 };
double jupai_color[3] = { 1., 1., 1. };
double tie_color[3] = { 1.0, 0.5, 0 };
double hair_color[3] = { 0.8, 0.2, 0.8 };

//菜单颜色
double black[3] = { 0., 0., 0. };
double pink[3] = { 0.95, 0.62, 0.76 };
double yellowishbrown[3] = { 1, 0.8, 0 };
double oranger[3] = { 1.0, 0.5, 0 };
double brown[3] = {0.5,0.25,0.};
double purple[3] = { 0.8, 0.2, 0.8 };
double white[3] = { 1.0, 1.0, 1.0 };

GLfloat fAspect;

void drawString(const char* str) {
static int isFirstCall = 1;
static GLuint lists;

if (isFirstCall
4000
) { // 如果是第一次调用，执行初始化
// 为每一个ASCII字符产生一个显示列表
isFirstCall = 0;

// 申请MAX_CHAR个连续的显示列表编号
lists = glGenLists(MAX_CHAR);

// 把每个字符的绘制命令都装到对应的显示列表中
wglUseFontBitmaps(wglGetCurrentDC(), 0, MAX_CHAR, lists);
}
// 调用每个字符对应的显示列表，绘制每个字符
for (; *str != '\0'; ++str)
glCallList(lists + *str);
}
//画圆(tianchong)
void drawCircle(int N, double radius, int angleStart = 0, int angleEnd = 360, double x = 0,double y=0,double s1=1.,double s2=1.){
glBegin(GL_POLYGON);

double start = (double)angleStart / 360.0*N;
double end = (double)angleEnd / 360 * N;
for (int i = start; i <end+1; i++){
glVertex3f(x+s1*cos(i * 2 * PI / N)*radius,y+ s2*sin(i * 2 * PI / N) *radius, 0.5);
}
glEnd();
}
//画圆（不填充）
void drawCircle2(int N, double radius, int angleStart = 0, int angleEnd = 360, int x = 0, int y = 0, double s1 = 1., double s2 = 1.){

glLineWidth(0.6);
glBegin(GL_LINE_STRIP);

double start = (double)angleStart / 360.0*N;
double end = (double)angleEnd / 360 * N;
for (int i = start; i <end+1; i++){
glVertex3f(x+s1*cos(i * 2 * PI / N)*radius,y + s2*sin(i * 2 * PI / N) *radius, 0.5);
}
glEnd();
}

//画左眼
void drawLeftEye(int x,int y){

glLoadIdentity();

glTranslatef(body[0], body[1], 0);
glRotatef(theta, 0, 0, 1);
glTranslatef(-body[0], -body[1], 0);

//睫毛
glColor3f(0.0f, 0.0f, 0.0f);
glBegin(GL_LINES);
glVertex3f(x+0,y+10,0.5);
glVertex3f(x+0, y+15, 0.5);
glVertex3f(x+5,y + 5*sqrt(3), 0.5);
glVertex3f(x+10, y+13, 0.5);
glVertex3f(x-5, y+5 * sqrt(3), 0.5);
glVertex3f(x-10,y+13, 0.5);
glEnd();
//眼线
drawCircle2(100, 10,0,360,x,y);
//眼珠
drawCircle(20, 2,0,360,x,y);
//眼白
glColor3f(lefteye_color[0], lefteye_color[1], lefteye_color[2]);
drawCircle(20, 10,0, 360, x, y);
}
//画右眼
void drawRightEye(int x,int y){
glLoadIdentity();

glTranslatef(body[0], body[1], 0);
glRotatef(theta, 0, 0, 1);
glTranslatef(-body[0], -body[1], 0);

glColor3f(0.0f, 0.0f, 0.0f);
//睫毛
glColor3f(0.0f, 0.0f, 0.0f);
glBegin(GL_LINES);
glVertex3f(x+0,y+ 10, 0.5);
glVertex3f(x+0, y+15, 0.5);
glVertex3f(x+5,y+ 5 * sqrt(3), 0.5);
glVertex3f(x+10, y+13, 0.5);
glVertex3f(x-5, y+5 * sqrt(3), 0.5);
glVertex3f(x-10, y+13, 0.5);
glEnd();
//画眼线
drawCircle2(100,10,0,360,x,y);
//眼珠
drawCircle(20, 2, 0, 360, x, y);
//眼白
glColor3f(righteye_color[0], righteye_color[1], righteye_color[2]);
//glTranslatef(-40,50, 0);
drawCircle(20, 10, 0, 360, x, y);

}
//画嘴巴
void drawMouth(int x,int y){
glLoadIdentity();

glTranslatef(body[0], body[1], 0);
glRotatef(theta, 0, 0, 1);
glTranslatef(-body[0], -body[1], 0);

//描边
glColor3f(0,0,0);

//下嘴唇
//glTranslatef(x,y,0);
drawCircle2(50, 40, 235, 305,x, y);
//上色
glColor3f(mouth_color[0], mouth_color[1], mouth_color[2]);
drawCircle(50, 40, 235, 305,x,y);

//上嘴唇
//glTranslatef(0,-61,0);
glColor3f(0, 0, 0);
drawCircle2(50,40,55,125,x,y-61);
//上色
glColor3f(mouth_color[0], mouth_color[1], mouth_color[2]);
drawCircle(50, 40, 55, 125,x,y-61);

glColor3f(0, 0, 0);
//glTranslatef(0, 30, 0);
glBegin(GL_LINES);
glVertex3f(x-25,y-31,0.5);
glVertex3f(x+25, y-31, 0.5);
glEnd();

}
//画脑袋和身体
void drawHeadandBody(int x,int y){

glLoadIdentity();

glTranslatef(body[0], body[1], 0);
glRotatef(theta, 0, 0, 1);
glTranslatef(-body[0], -body[1], 0);
//
//描边
glColor3f(0,0,0);
drawCircle2(50,60,0,180,x,y);
glBegin(GL_LINE_STRIP);
glVertex3f(x+60, y, 0.5f);
glVertex3f(x+65, y-150, 0.5f);
glVertex3f(x-65, y-150, 0.5f);
glVertex3f(x-60, y, 0.5f);
glEnd();

glColor3f(1.0f, 1.0f, 1.0f);
//画脑袋
drawCircle(50,60,0,360,x,y);

//画身体
glBegin(GL_POLYGON);
glVertex3f(x+60,y,0.5f);
glVertex3f(x-60, y, 0.5f);
glVertex3f(x-65,y-150, 0.5f);
glVertex3f(x+65, y-150, 0.5f);
glEnd();
}
void drawLeftArm(int x,int y){

glLoadIdentity();

glTranslatef(body[0], body[1], 0);
glRotatef(theta, 0, 0, 1);
glTranslatef(-body[0],-body[1],0);

glTranslatef(x,y,0);
glRotatef(30, 0, 0, 1);
glTranslatef(-x,-y,0);

glColor3f(1,1,1);
drawCircle(50,50,180,360,x,y,0.25);
glColor3f(0, 0, 0);
drawCircle2(50, 50, 180, 360,x,y,0.23);
drawCircle2(50, 50, 180, 360, x, y, 0.24);
drawCircle2(50, 50, 180, 360, x, y, 0.25);
drawCircle2(50, 50, 180, 360, x, y, 0.26);

}
void drawRightArm(int x, int y){

glLoadIdentity();

glTranslatef(body[0], body[1], 0);
glRotatef(theta, 0, 0, 1);
glTranslatef(-body[0], -body[1], 0);

glTranslatef(x, y, 0);
glRotatef(-30, 0, 0, 1);
glTranslatef(-x, -y, 0);

glColor3f(1, 1, 1);
drawCircle(50, 50, 180, 360, x, y, 0.25);
glColor3f(0, 0, 0);
drawCircle2(50, 50, 180, 360, x, y, 0.23);
drawCircle2(50, 50, 180, 360, x, y, 0.24);
drawCircle2(50, 50, 180, 360, x, y, 0.25);
drawCircle2(50, 50, 180, 360, x, y, 0.26);

}
void drawTie(int x,int y){
glLoadIdentity();

glTranslatef(x, y, 0);
glRotatef(theta, 0, 0, 1);
glTranslatef(-x, -y, 0);

glTranslatef(x,y,0);

glColor3f(tie_color[0],tie_color[1],tie_color[2]);
glBegin(GL_POLYGON);
glVertex3f(-9, 2, 0.5);
glVertex3f(-9, -2, 0.5);
glVertex3f(9, -2, 0.5);
glVertex3f(9, 2, 0.5);
glEnd();
glColor3f(0, 0, 0);
drawCircle2(20, 10);
glColor3f(1, 0.8, 0);
drawCircle(20, 10);
glTranslatef(0,5,0);
glColor3f(tie_color[0], tie_color[1], tie_color[2]);

glBegin(GL_POLYGON);
glVertex3f(-60,0,0.5);
glVertex3f(-60,-10, 0.5);
glVertex3f(60, -10, 0.5);
glVertex3f(60, 0, 0.5);
glEnd();

}
void drawJuPai(int x,int y){

glLoadIdentity();

glTranslatef(x, y, 0);
glRotatef(theta, 0, 0, 1);
glTranslatef(-x, -y, 0);

glTranslatef(x, y, 0);

glColor3f(0, 0, 0);

//描边（牌子
glBegin(GL_LINE_STRIP);
glVertex3f(-30, 20, 0.5);
glVertex3f(-30, -20, 0.5);
glVertex3f(30, -20, 0.5);
glVertex3f(30, 20, 0.5);
glEnd();

glBegin(GL_LINE_STRIP);
glVertex3f(-5, -20, 0.5);
glVertex3f(-5, -50, 0.5);
glVertex3f(5, -50, 0.5);
glVertex3f(5, -20, 0.5);
glEnd();

//牌子
glColor3f(jupai_color[0], jupai_color[1], jupai_color[2]);
glBegin(GL_POLYGON);
glVertex3f(-30, 20, 0.5);
glVertex3f(-30, -20, 0.5);
glVertex3f(30, -20, 0.5);
glVertex3f(30, 20, 0.5);
glEnd();

glBegin(GL_POLYGON);
glVertex3f(-5, -20, 0.5);
glVertex3f(-5, -50, 0.5);
glVertex3f(5, -50, 0.5);
glVertex3f(5, -20, 0.5);
glEnd();

//手
glTranslatef(-40,-70,0);
glRotatef(120, 0, 0, 1);
glScalef(0.25, 1, 1);
glColor3f(1, 1, 1);
drawCircle(100, 50, 180, 360);
glColor3f(0, 0, 0);
drawCircle2(100, 50, 180, 360);

}

void drawMoxigan(int x,int y){

glLoadIdentity();

glTranslatef(x, y, 0);
glRotatef(theta, 0, 0, 1);
glTranslatef(-x, -y, 0);

glTranslatef(x,y,0);
glRotatef(-50, 0, 0, 1);
glColor3f(hair_color[0],hair_color[1],hair_color[2]);
drawCircle(50,50,0,90);
glTranslatef(50, 0, 0);
glRotatef(30, 0, 0, 1);
glTranslatef(-50, 0, 0);
drawCircle(50, 50, 0, 90);
glTranslatef(50, 0, 0);
glRotatef(30,0,0,1);
glTranslatef(-50,0,0);
drawCircle(50, 50, 0, 90);
}

void drawClothes(int x,int y){

}
void myDisplay()
{
/**************伊丽莎白de衣服（开始）**********************/

if (mode==GL_SELECT)
glPushName(TIE);
drawTie(tie[0], tie[1]);

if (mode == GL_SELECT)
glPushName(JU_PAI);
drawJuPai(juPai[0],juPai[1]);

if (mode == GL_SELECT)
glPushName(HAIR);
drawMoxigan(hair[0], hair[1]);
/**************伊丽莎白de衣服（结束）**********************/

/**************伊丽莎白（开始）**********************/
glColor3f(1.0f, 1.0f, 1.0f);

if (mode == GL_SELECT)
glPushName(RIGHT_ARM);
drawRightArm(rightArm[0], rightArm[1]);

if (mode == GL_SELECT)
glPushName(LEFT_ARM);
drawLeftArm(leftArm[0], leftArm[1]);

if (mode == GL_SELECT)
glPushName(MOUTH);
drawMouth(mouth[0],mouth[1]);
//画眼睛

if (mode == GL_SELECT)
glPushName(LEFT_EYE);
drawLeftEye(leftEye[0],leftEye[1]);

if (mode == GL_SELECT)
glPushName(RIGHT_EYE);
drawRightEye(rightEye[0],rightEye[1]);

//华脑袋和身体

if (mode == GL_SELECT)
glPushName(-1);
drawHeadandBody(body[0],body[1]);
/**************伊丽莎白（结束）**********************/

glPopMatrix();

}

void testDisplay(){

glColor3f(1.0, 0.0, 0.0);
if (mode == GL_SELECT)
glLoadName(100);
glPushMatrix();
glBegin(GL_QUADS);
glVertex3f(-0.1, 0, 0);
glVertex3f(0.1, 0, 0);
glVertex3f(0.1, 0.1, 0);
glVertex3f(-0.1, 0.1, 0);
glEnd();
glPopMatrix();

/*glColor3f(0.0, 0.0, 1.0);
if (mode == GL_SELECT)
glLoadName(101);
glPushMatrix();
glBegin(GL_QUADS);
glVertex3f(-0.3, -0.1, 0);
glVertex3f(-0.2, -0.1, 0);
glVertex3f(-0.2, -0.2, 0);
glVertex3f(-0.3, -0.2, 0);
glEnd();
glPopMatrix();*/

/*glColor3f(0.0, 0.0, 1.0);
if (mode == GL_SELECT)
glLoadName(102);
glPushMatrix();
glBegin(GL_QUADS);
glVertex3f(-0.1, -0.1, 0);
glVertex3f(0.1, -0.1, 0);
glVertex3f(0.1, -0.2, 0);
glVertex3f(-0.1, -0.2, 0);
glEnd();
glPopMatrix();*/

//glColor3f(1.0f, 1.0f, 0.0f);
//if (mode == GL_SELECT)
//glLoadName(102);
//glPushMatrix();
////drawCircle(10,0.05,0,360,0.5,0.5);
///*
//glBegin(GL_POLYGON);
//for (int i = 0; i <21; i++){
//  glVertex3f(0.5 + cos(i * 2 * PI / 20)*0.05, 0.5 + sin(i * 2 * PI / 20) *0.05, 0);
//}
//glEnd();*/
//glBegin(GL_POLYGON);
//glVertex3f(-0.3, -0.1, 0);
//glVertex3f(-0.2, -0.1, 0);
//glVertex3f(-0.2, -0.2, 0);
//glVertex3f(-0.3, -0.2, 0);
//glEnd();

//glPopMatrix();

//glutSwapBuffers();
}

void judegSectedObject(int x,int y){

glClear(GL_COLOR_BUFFER_BIT);

GLint hits, viewport[4];
glGetIntegerv(GL_VIEWPORT, viewport); //获得viewport

glSelectBuffer(BUFSIZE, selectBuf);   //指定将“图元列表”（点击记录）返回到selectBuf数组中

mode = GL_SELECT;
glRenderMode(mode);   //进入选择模式
glInitNames();

glMatrixMode(GL_PROJECTION);//进入投影阶段准备拾取
glPushMatrix();//保存原来的投影矩阵
glLoadIdentity();

gluPickMatrix(x, viewport[3]-y,1,1,viewport);
glOrtho(-300, 300, -200, 200, -10, 10);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();

myDisplay();

//testDisplay();

glMatrixMode(GL_PROJECTION);

glPopMatrix();  // 返回正常的投影变换

mode = GL_RENDER;
hits = glRenderMode(mode);

cout << hits;
if (hits > 0){
GLuint name, *ptr;
ptr = selectBuf;

int selected_num = 0;

for (int i = 0; i < hits; i++){
name = *ptr;
ptr += 3;
ptr += name - 1;
cout << i << ":" << *ptr << endl;

BOOL timeToBreak = false;

if (selected_num == 0){
switch (*ptr){
case LEFT_EYE:
cout << "left eye" << endl;
leftEye_Selected = true;
selectedToChangeColor = LEFT_EYE;
selected_num++;
break;
case RIGHT_EYE:
rightEye_selected = true;
selectedToChangeColor = RIGHT_EYE;
selected_num++;
cout << "right eye" << selected_num << endl;
break;
case TIE:
cout << "tie" << endl;
tie_Selected = true;
selectedToChangeColor = TIE;
selected_num++;
break;
case JU_PAI:
cout << "jupai" << endl;
juPai_Selected = true;
selectedToChangeColor = JU_PAI;
selected_num++;
break;
case HAIR:
cout << "hair" << endl;
hair_Selected = true;
selectedToChangeColor = HAIR;
selected_num++;
break;
case LEFT_ARM:
cout << "left arm" << endl;
leftArm_Selected = true;
selected_num++;
break;
case RIGHT_ARM:
cout << "right arm" << endl;
rightArm_Selected = true;
selected_num++;
break;
case MOUTH:
cout << "mouth" << endl;
mouth_Selected = true;
selectedToChangeColor = MOUTH;
selected_num++;
break;
default:
timeToBreak = false;
break;

}
}

}
}

glMatrixMode(GL_MODELVIEW);

}
void mouseClick(int btn, int state, int x, int y){
if (btn == GLUT_LEFT_BUTTON&&state == GLUT_DOWN){
std::cout << "鼠标落下：" << x << "," << y << std::endl;
judegSectedObject(x, y);
}
if (btn == GLUT_LEFT_BUTTON&&state == GLUT_UP){
std::cout << "鼠标抬起：" << x << "," << y << std::endl;

leftEye_Selected = false;
rightEye_selected = false;
leftArm_Selected = false;
rightArm_Selected = false;
juPai_Selected = false;
mouth_Selected = false;
hair_Selected = false;
tie_Selected = false;

}
}

void init(){

glEnable(GL_POINT_SMOOTH);
glEnable(GL_LINE_SMOOTH);
glHint(GL_POINT_SMOOTH_HINT, GL_NICEST); // Make round points, not square points
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);  // Antialias the lines
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

leftEye_Selected = false;
rightEye_selected = false;
leftArm_Selected = false;
rightArm_Selected = false;
juPai_Selected = false;
mouth_Selected = false;
hair_Selected = false;
tie_Selected = false;

glEnable(GL_DEPTH_TEST);
glClearColor(0.5, 0.5, 0.5, 1);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}

void display(){
glMatrixMode(GL_PROJECTION);
glPushMatrix();
glLoadIdentity();

glOrtho(-300, 300, -200, 200, -10, 10);
glMatrixMode(GL_MODELVIEW);
//glLoadIdentity();
myDisplay();
glutSwapBuffers();
}
void upToRotate(int key,int x,int y){

if (key == GLUT_KEY_UP){
theta += 10;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
display();
}
if (key == GLUT_KEY_DOWN){
theta -= 10;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
display();
}

}
void mouseDrag(int x, int y){
std::cout << "鼠标拖动：" << x << "," << y << std::endl;

if (leftEye_Selected){
leftEye[0] = x - window_width / 2;
leftEye[1] = window_height / 2 - y;
}
if (rightEye_selected){
rightEye[0] = x - window_width / 2;
rightEye[1] = window_height / 2 - y;

}
if (leftArm_Selected){
leftArm[0] = x - window_width / 2;
leftArm[1] = window_height / 2 - y;
}
if (rightArm_Selected){
rightArm[0] = x - window_width / 2;
rightArm[1] = window_height / 2 - y;
}
if (juPai_Selected){
juPai[0] = x - window_width / 2;
juPai[1] = window_height / 2 - y;
}
if (mouth_Selected){
mouth[0] = x - window_width / 2;
mouth[1] = window_height / 2 - y + 25;
}
if (hair_Selected){
hair[0] = x - window_width / 2;
hair[1] = window_height / 2 - y;
}
if (tie_Selected){
tie[0] = x - window_width / 2;
tie[1] = window_height/ 2 - y;
}

glClear(GL_COLOR_BUFFER_BIT |GL_DEPTH_BUFFER_BIT);
display();
/*glutPostRedisplay();*/
}
void menu(int index){
double color[3] = { 0., 0., 0. };

/*double yellowishbrown[3] = { 1, 0.8, 0 };
double oranger[3] = { 1.0, 0.5, 0 };
double brown[3] = { 0.5, 0.25, 0. };
double purple[3] = { 0.8, 0.2, 0.8 };
double white[3] = { 1.0, 1.0, 1.0 };*/

switch (index)
{
case 0:
color[0] = black[0];
color[1] = black[1];
color[2] = black[2];
break;
case 1:
color[0] = pink[0];
color[1] = pink[1];
color[2] = pink[2];
break;
case 2:
color[0] = yellowishbrown[0];
color[1] = yellowishbrown[1];
color[2] = yellowishbrown[2];
break;
case 3:
color[0] = oranger[0];
color[1] = oranger[1];
color[2] = oranger[2];
break;
case 4:
color[0] = brown[0];
color[1] = brown[1];
color[2] = brown[2];
break;
case 5:
color[0] = purple[0];
color[1] = purple[1];
color[2] = purple[2];
break;
case 6:
color[0] = white[0];
color[1] = white[1];
color[2] = white[2];
break;
default:
break;
}
switch (selectedToChangeColor)
{
case LEFT_EYE:
cout << "zuoyan yanse " << index << endl;
lefteye_color[0] = color[0];
lefteye_color[1] = color[1];
lefteye_color[2] = color[2];
break;
case RIGHT_EYE:
cout << "youyan yanse " << index << endl;
righteye_color[0] = color[0];
righteye_color[1] = color[1];
righteye_color[2] = color[2];
break;
case LEFT_ARM:
leftarm_color[0] = color[0];
leftarm_color[1] = color[1];
leftarm_color[2] = color[2];
break;
case RIGHT_ARM:
rightarm_color[0] = color[0];
rightarm_color[1] = color[1];
rightarm_color[2] = color[2];
break;
case MOUTH:
mouth_color[0] = color[0];
mouth_color[1] = color[1];
mouth_color[2] = color[2];
break;
case JU_PAI:
jupai_color[0] = color[0];
jupai_color[1] = color[1];
jupai_color[2] = color[2];
break;
case HAIR:
hair_color[0] = color[0];
hair_color[1] = color[1];
hair_color[2] = color[2];
break;
case TIE:
tie_color[0] = color[0];
tie_color[1] = color[1];
tie_color[2] = color[2];
break;
default:
break;
}
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
display();
}

void ChangeSize(int w, int h)
{

window_width = w;
window_height = h;

if (h == 0) h = 1;
glViewport(0, 0, w, h);

fAspect = (GLfloat)w / (GLfloat)h;

glMatrixMode(GL_PROJECTION);
glLoadIdentity();

if (w <= h)
{
glOrtho(-300, 300, -200 * fAspect, 200 * fAspect, -10, 10);
}
else
{
glOrtho(-300 * fAspect, 300 * fAspect, -200, 200, -10, 10);
}

glMatrixMode(GL_MODELVIEW);
glLoadIdentity();

}
int main(int argc, char* argv[]){

glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE| GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(window_width,window_height);
glutCreateWindow("伊丽莎白");

init();

glutReshapeFunc(ChangeSize);
glutDisplayFunc(display);
glutMouseFunc(mouseClick);
glutMotionFunc(mouseDrag);
glutSpecialFunc(upToRotate);

glutCreateMenu(menu);

glutAddMenuEntry("黑色", 0);
glutAddMenuEntry("粉色", 1);
glutAddMenuEntry("土黄色", 2);
glutAddMenuEntry("橙色",3);
glutAddMenuEntry("棕色", 4);
glutAddMenuEntry("紫色", 5);
glutAddMenuEntry("白色", 6);

glutAttachMenu(GLUT_RIGHT_BUTTON);

glutMainLoop();

return 0;
}

运行效果：