計算機圖形學——二維卡通人物交互設計

根據OpenGL提供的直線，多邊形繪製算法（橡皮筋效果），實現基於鼠標交互的卡通人物設計與繪製。使用顏色填充與反走樣技術對卡通人物外貌以及衣着進行繪製。實現對卡通人物輪廓的交互控制，點擊鼠標左鍵可以對人物五官位置進行拖拽移動調整。按“↑”按鍵能夠實現卡通人物繞座標原點（或指定點）進行旋轉。
附加要求：選中其中的一個多邊形區域，點擊鼠標右鍵，彈出一個菜單，可以對該區域進行不同顏色的選擇。可以設計髮型、衣服的模版，當作文件進行存儲，可以在窗口最右邊設計一個模板庫，顯示保存的髮型與衣服，拖拽到卡通人物上可以爲卡通人物進行髮型或者衣服的替換。

#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;

//判斷被選中的是哪個物體
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);
//畫眼睛
glLoadName(LEFT_EYE);
drawLeftEye(-65,50);

glLoadName(RIGHT_EYE);
drawRightEye(-135,50);
*/
//物體初始座標
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;

//獲取被選中改變顏色的物體
int selectedToChangeColor = -1;
//顏色數組
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 };

//菜單顏色
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) { // 如果是第一次調用，執行初始化
        // 爲每一個ASCII字符產生一個顯示列表
        isFirstCall = 0;

        // 申請MAX_CHAR個連續的顯示列表編號
        lists = glGenLists(MAX_CHAR);

        // 把每個字符的繪製命令都裝到對應的顯示列表中
        wglUseFontBitmaps(wglGetCurrentDC(), 0, MAX_CHAR, lists);
    }
    // 調用每個字符對應的顯示列表，繪製每個字符
    for (; *str != '\0'; ++str)
        glCallList(lists + *str);
}
//畫圓(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();
}
//畫圓（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();
}


//畫左眼
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();
    //眼線
    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);
}
//畫右眼
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();
    //畫眼線
    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);

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

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

    //描邊
    glColor3f(0,0,0);

    //下嘴脣
    //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);

    //上嘴脣
    //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();


}
//畫腦袋和身體
void drawHeadandBody(int x,int y){


    glLoadIdentity();

    glTranslatef(body[0], body[1], 0);
    glRotatef(theta, 0, 0, 1);
    glTranslatef(-body[0], -body[1], 0);
    //
    //描邊
    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);
    //畫腦袋
    drawCircle(50,60,0,360,x,y);

    //畫身體
    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);

    //描邊（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()
{
    /**************伊麗莎白de衣服（開始）**********************/

    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]);
    /**************伊麗莎白de衣服（結束）**********************/

    /**************伊麗莎白（開始）**********************/
    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]);
    //畫眼睛

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


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

    //華腦袋和身體

    if (mode == GL_SELECT)
        glPushName(-1);
    drawHeadandBody(body[0],body[1]);
    /**************伊麗莎白（結束）**********************/


    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); //獲得viewport  

    glSelectBuffer(BUFSIZE, selectBuf);   //指定將“圖元列表”（點擊記錄）返回到selectBuf數組中


    mode = GL_SELECT;
    glRenderMode(mode);   //進入選擇模式
    glInitNames();

    glMatrixMode(GL_PROJECTION);//進入投影階段準備拾取
    glPushMatrix();//保存原來的投影矩陣
    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();  // 返回正常的投影變換  

    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 << "鼠標落下：" << x << "," << y << std::endl;
        judegSectedObject(x, y);
    }
    if (btn == GLUT_LEFT_BUTTON&&state == GLUT_UP){
        std::cout << "鼠標擡起：" << 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 << "鼠標拖動：" << 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("伊麗莎白");

    init();

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

    glutCreateMenu(menu);

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

    glutAttachMenu(GLUT_RIGHT_BUTTON);


    glutMainLoop();


    return 0;
}

運行效果：