【OpenGL绘制企鹅】记录用OpenGL绘制的企鹅---(一)

代码+exe+中间文件 down！！我的是vs12工程 

 HERE

Firstly, result is like this...







here is code...

Hmmm...Bad codes...

我们的OpenGL第一个大作业，后期还要在进行加工。目前眼睛用Sphere实现，随后会改成纹理贴图。May be 15 later.

TIPS：

按键：

“o”：切换为正交投影。

“p”：切换为透视投影。

#include <stdlib.h>
#include <gl\glut.h>
#include <gl\GL.h>
#include <gl\GLU.h>
#include <math.h>
#include <iostream>

#define PI 3.141592

static float c= PI/180.0f; //弧度和角度转换参数
static int du = 90,oldmy = -1,oldmx = -1; //du是视点绕y轴的角度,opengl里默认y轴是上方向
static float r = 2.0f,h = 0.0f; //r是视点绕y轴的半径,h是视点高度即在y轴
static float width = 500, height = 500;
static bool isPers = true;

void init()
{
glClearColor (1.0, 1.0, 1.0, 1.0);
glShadeModel (GL_SMOOTH);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST);

const GLfloat light_ambient[]  = { 0.1f, 0.1f, 0.1f, 1.0f };
const GLfloat light_diffuse[]  = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f };
const GLfloat light_position[] = { 0.5f, 0.5f, -0.5f, 1.0f };

const GLfloat mat_ambient[]    = { 0.5f, 0.5f, 0.5f, 1.0f };
const GLfloat mat_diffuse[]    = { 0.5f, 0.5f, 0.5f, 1.0f };
const GLfloat mat_specular[]   = { 0.3f, 0.3f, 0.3f, 1.0f };
const GLfloat high_shininess[] = { 100.0f };

glEnable(GL_LIGHT0);
glEnable(GL_NORMALIZE);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHTING);

glLightfv(GL_LIGHT0, GL_AMBIENT,  light_ambient);
glLightfv(GL_LIGHT0, GL_DIFFUSE,  light_diffuse);
glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular);
glLightfv(GL_LIGHT0, GL_POSITION, light_position);

glMaterialfv(GL_FRONT, GL_AMBIENT,   mat_ambient);
glMaterialfv(GL_FRONT, GL_DIFFUSE,   mat_diffuse);
glMaterialfv(GL_FRONT, GL_SPECULAR,  mat_specular);
glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess);

glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_COLOR_MATERIAL);

//关闭背面顶点的计算
glLightModeli(GL_LIGHT_MODEL_TWO_SIDE , GL_FALSE);
}

void display()
{
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();

if(isPers){
gluPerspective(50, 1, 1, 10);
gluLookAt( r * cos(c * du), h, r * sin(c * du),
0, 0, 0,
0, 1, 0);
} else {
glLoadIdentity();
gluOrtho2D(-(GLdouble) height/height, (GLdouble) height/height, -(GLdouble) height/height, (GLdouble) height/height);
}

static int list = 0;
if( list == 0 )
{
// 嘴的数组
GLfloat PointA[] = {0, 0.0, 0.28},
PointB[] = {-0.15, 0.1, 0.28},
PointC[] = {0.15, 0.1, 0.28},
PointD[] = {0, 0.1, 0.45},
PointE[] = {0, 0.15, 0.28};
GLfloat ColorR[] = {0, 0, 1};

// 组成嘴的六个三角形
glNewList(list, GL_COMPILE);
glColor3f(1, 0.6, 0);
glBegin(GL_TRIANGLES);
// 平面BDC
glColor3f(1, 0.6, 0);
glVertex3fv(PointC);
glColor3f(1, 1.0, 0);
glVertex3fv(PointD);
glColor3f(1, 0.6, 0);
glVertex3fv(PointB);
// 平面ADB
glColor3f(1, 0.6, 0);
glVertex3fv(PointA);
glColor3f(1, 0.6, 0);
glVertex3fv(PointB);
glColor3f(1, 0.8, 0);
glVertex3fv(PointD);
// 平面ACD
glColor3f(1, 1.0, 0);
glVertex3fv(PointD);
glColor3f(1, 0.6, 0);
glVertex3fv(PointC);
glColor3f(1, 0.6, 0);
glVertex3fv(PointA);

glColor3f(1, 0.6, 0);
glVertex3fv(PointE);
glColor3f(1, 0.6, 0);
glVertex3fv(PointB);
glColor3f(1, 1.0, 0);
glVertex3fv(PointD);

glColor3f(1, 0.6, 0);
glVertex3fv(PointE);
glColor3f(1, 1.0, 0);
glVertex3fv(PointD);
glColor3f(1, 0.6, 0);
glVertex3fv(PointC);

glColor3f(1, 1.0, 0);
glVertex3fv(PointD);
glColor3f(1, 0.6, 0);
glVertex3fv(PointB);
glColor3f(1, 0.6, 0);
glVertex3fv(PointC);
glEnd();
glEndList();

glPushMatrix();
// 嘴
glPushMatrix();
glCallList(list);
glPopMatrix();

//围脖
glPushMatrix();
glColor3d(1, 0.0, 0);
glTranslated(0.0, 0.0, 0.0);
glRotated(90, 1.0, 0.0, 0.0);
glutSolidTorus(0.16, 0.17, 10, 10);
glPopMatrix();

// 头
glPushMatrix();
glColor3f(0, 0, 0);
glTranslated(0.0, 0.15, 0.0);
glutSolidSphere( 0.3, 40, 40 );
glPopMatrix();

// 身体
glPushMatrix();
glColor3f(0, 0, 0);
glTranslated(0.0, -0.2, 0.0);
glutSolidSphere( 0.35, 40, 40 );
glPopMatrix();

// 左手
glPushMatrix();
glColor3f(0, 0, 0);
glTranslated(-0.22, 0.0, 0.1);
glRotated(40, 0, 0, 1);
glRotated(-90, 0, 1, 0);
GLUquadricObj *objCylinder = gluNewQuadric();
gluCylinder(objCylinder, 0.08, 0.03, 0.3, 32, 5);
glPopMatrix();

// 右手
glPushMatrix();
glColor3f(0, 0, 0);
glTranslated(0.22, 0.0, 0.1);
glRotated(-40, 0, 0, 1);
glRotated(90, 0, 1, 0);
GLUquadricObj *objCylinder1 = gluNewQuadric();
gluCylinder(objCylinder1, 0.08, 0.03, 0.3, 32, 5);
glPopMatrix();

// 左脚
glPushMatrix();
glColor3f(1, 0.5, 0);
glTranslated(-0.2, -0.45, 0);
glScaled(1.0,1.0,1.6);
glutSolidSphere(0.13, 8, 5);
glPopMatrix();

// 右脚
glPushMatrix();
glColor3f(1, 0.5, 0);
glTranslated(0.2, -0.45, 0);
glScaled(1.0,1.0,1.6);
glutSolidSphere(0.13, 8, 5);
glPopMatrix();

// 左眼睛
glPushMatrix();
glColor3f(1, 1, 1);
glTranslated(-0.1, 0.2, 0.3);
glScaled(1.0,1.8,0.1);
glutSolidSphere(0.05, 20, 10);
glPopMatrix();

// 右眼睛
glPushMatrix();
glColor3f(1, 1, 1);
glTranslated(0.1, 0.2, 0.3);
glScaled(1.0,1.8,0.1);
glutSolidSphere(0.05, 20, 10);
glPopMatrix();

// 左眼珠
glPushMatrix();
glColor3f(0, 0, 0);
glTranslated(0.1, 0.2, 0.31);
glScaled(1.0, 1.0, 0.01);
glutSolidSphere(0.03, 20, 10);
glPopMatrix();

// 右眼珠
glPushMatrix();
glColor3f(0, 0, 0);
glTranslated(-0.1, 0.2, 0.31);
glScaled(1.0, 1.0, 0.01);
glutSolidSphere(0.03, 20, 10);
glPopMatrix();
glPopMatrix();

glLoadIdentity();

glutSwapBuffers();
}
}

void keyboard (unsigned char key, int x, int y)
{
switch (key) {
case 'o':
isPers = false;
break;
case 'p':
du = 90;
oldmy = -1;
oldmx = -1;
r = 2.0;
h = 0.0;
isPers = true;
break;
case 27:
exit(0);
break;
default:
break;
}

display();
}

void reshape(int w, int h)
{
glViewport(0,0,(GLsizei)w,(GLsizei)h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
if(isPers){
gluPerspective(50, 1, 1, 10);
gluLookAt( r * cos(c * du), h, r * sin(c * du),
0, 0, 0,
0, 1, 0);
} else {
glLoadIdentity();
gluOrtho2D(-(GLdouble) height/height, (GLdouble) height/height, -(GLdouble) height/height, (GLdouble) height/height);
}
glMatrixMode(GL_MODELVIEW);
}

void Mouse(int button, int state, int x, int y) //处理鼠标点击
{
if(state == GLUT_DOWN) //第一次鼠标按下时,记录鼠标在窗口中的初始坐标
oldmx = x,oldmy = y;
}

void onMouseMove(int x,int y) //处理鼠标拖动
{
du += x - oldmx; //鼠标在窗口x轴方向上的增量加到视点绕y轴的角度上，这样就左右转了
h += 0.03f * ( y - oldmy ); //鼠标在窗口y轴方向上的改变加到视点的y坐标上，就上下转了
if(h > 5.0f)
h = 5.0f; //视点y坐标作一些限制，不会使视点太奇怪
else if(h < -5.0f)
h = -5.0f;
oldmx = x, oldmy = y; //把此时的鼠标坐标作为旧值，为下一次计算增量做准备

display();
}

int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize (500, 500);
glutInitWindowPosition (100, 100);
glutCreateWindow (argv[0]);
init();
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
glutMouseFunc(Mouse);
glutMotionFunc(onMouseMove);
glutMainLoop();
return 0;
}