图形学卡通人物绘制以及交互操作
http://blog.csdn.net/zhy199336/article/details/45367835
先来个要求吧:
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。
以下是代码:
#include "stdafx.h"
#include <windows.h>
#include <GL/glu.h>
#include <GL/gl.h>
#include <GL/glut.h>
#include <GL/glaux.h>
#include <math.h>
#include <stdio.h>
#pragma comment(lib,"glaux.lib")
#define Glass 1
#define Stone 2
#define Eye 3
#define Eye1 4
#define Nose 5
#define Cap 6
#define Crown 7
#define Clothes 8
#define Superman 9
#define PI 3.1416
#define MAX_CHAR 128
static int EYE_COLOR=0;
static int EYE1_COLOR=0;
static int NOSE_COLOR=0;
static int CROWN_COLOR=6;
static int SUPERMAN_COLOR=3;
GLuint texture[4];
GLuint base;
BOOL GLASS_STATE;
BOOL STONE_STATE;
BOOL EYE_STATE;
BOOL EYE1_STATE;
BOOL NOSE_STATE;
BOOL CAP_STATE;
BOOL CROWN_STATE;
BOOL CLOTHES_STATE;
BOOL SUPERMAN_STATE;
GLuint GlassCor[2] = {0,0};
GLuint StoneCor[2] = {20,10};
GLuint EyeCor[2] = {-12,60};
GLuint EyeCor1[2] = {12,60};
GLuint NoseCor[2]={0,60};
GLuint CapCor[2]={0,85};
GLuint CrownCor[2]={0+118,9+70};
GLuint ClothesCor[2]={0+110,0-50};
GLuint SupermanCor[2]={0,0};
int Wide = 0;
int High = 0;
const int N=40;
float xx[50],yy[50]={0};
int select_part=0;
static GLfloat theta =0;
static GLfloat colors[8][3] = {
{ 0.0, 0.0, 0.0 }, { 1.0, 0.0, 0.0 }, { 0.0, 1.0, 0.0 }, {0.5,0.5,0.75 },
{ 0.0, 1.0, 1.0 }, { 1.0, 0.0, 1.0 }, { 1.0, 1.0, 0.0 }, { 1.0, 1.0, 1.0 }};
void paintViewportA();
void drawString(const char* str);
void selectFont(int size, int charset, const char* face);
void DrawSphereTexture(int x,int y)
{
glEnable(GL_BLEND); //启用混合功能，将图形颜色同周围颜色相混合
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_POINT_SMOOTH); //点抗锯齿
glEnable(GL_LINE_SMOOTH); //线抗锯齿
glEnable(GL_POLYGON_SMOOTH); //多边形抗锯齿
glLoadIdentity ();
glRotatef (-30.0, 0.0, 0.0, 1.0);
glRotatef(theta, 0.0, 0.0, 1.0);
//第三步 画手臂 左
glColor3f(1.0f,1.0f,1.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<N;i++)
{
xx[i]=16*cos(2*i*PI/N)-28;
yy[i]=40*sin(2*i*PI/N)-10;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//再描一遍线
glColor3f(0.0f,0.0f,0.0f);
glBegin(GL_LINE_LOOP);
for(int i=0;i<N;i++)
{
xx[i]=16*cos(2*i*PI/N)-28;
yy[i]=40*sin(2*i*PI/N)-10;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//画手臂 右
glLoadIdentity ();
glRotatef(theta, 0.0, 0.0, 1.0);
glRotatef (30.0, 0.0, 0.0, 1.0);
glColor3f(1.0f,1.0f,1.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<N;i++)
{
xx[i]=16*cos(2*i*PI/N)+28;
yy[i]=40*sin(2*i*PI/N)-10;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//再描一遍线
glColor3f(0.0f,0.0f,0.0f);
glBegin(GL_LINE_LOOP);
for(int i=0;i<N;i++)
{
xx[i]=16*cos(2*i*PI/N)+28;
yy[i]=40*sin(2*i*PI/N)-10;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//开始画腿************************************************************************
glLoadIdentity ();
glRotatef(theta, 0.0, 0.0, 1.0);
glRotatef (8.0, 0.0, 0.0, 1.0);
glColor3f(1.0f,1.0f,1.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<N;i++)
{
xx[i]=15*cos(2*i*PI/N)-22;
yy[i]=33*sin(2*i*PI/N)-37;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//再描一遍线
glColor3f(0.0f,0.0f,0.0f);
glBegin(GL_LINE_LOOP);
for(int i=0;i<N;i++)
{
xx[i]=15*cos(2*i*PI/N)-22;
yy[i]=33*sin(2*i*PI/N)-37;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//画右腿
glLoadIdentity ();
glRotatef(theta, 0.0, 0.0, 1.0);
glRotatef (-8.0, 0.0, 0.0, 1.0);
glColor3f(1.0f,1.0f,1.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<N;i++)
{
xx[i]=15*cos(2*i*PI/N)+22;
yy[i]=33*sin(2*i*PI/N)-37;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//再描一遍线
glColor3f(0.0f,0.0f,0.0f);
glBegin(GL_LINE_LOOP);
for(int i=0;i<N;i++)
{
xx[i]=15*cos(2*i*PI/N)+22;
yy[i]=33*sin(2*i*PI/N)-37;
glVertex2f(xx[i],yy[i]);
}
glEnd();
glLoadIdentity ();
glRotatef(theta, 0.0, 0.0, 1.0);
//再画身体*********************************************************************
glColor3f(1.0f,1.0f,1.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<N;i++)
{
xx[i]=40*cos(2*i*PI/N);
yy[i]=45*sin(2*i*PI/N);
glVertex2f(xx[i],yy[i]);
}
glEnd();
//再描一遍线
glColor3f(0.0f,0.0f,0.0f);
glBegin(GL_LINE_LOOP);
for(int i=0;i<N;i++)
{
xx[i]=40*cos(2*i*PI/N);
yy[i]=45*sin(2*i*PI/N);
glVertex2f(xx[i],yy[i]);
}
glEnd();
//画头部
glLoadIdentity ();
glRotatef(theta, 0.0, 0.0, 1.0);
glColor3f(1.0f,1.0f,1.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<N;i++)
{
xx[i]=30*cos(2*i*PI/N);
yy[i]=20*sin(2*i*PI/N)+60;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//再描一遍线
glColor3f(0.0f,0.0f,0.0f);
glBegin(GL_LINE_LOOP);
for(int i=0;i<N;i++)
{
xx[i]=30*cos(2*i*PI/N);
yy[i]=20*sin(2*i*PI/N)+60;
glVertex2f(xx[i],yy[i]);
}
glEnd();
}
//胸章
void DrawXiongzhang(int x,int y)
{
glLoadIdentity();
glRotatef(theta, 0.0, 0.0, 1.0);
glTranslatef(0,0,30);
glColor3f(0.0f,1.0f,0.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<N;i++)
{
xx[i]=10*cos(2*i*PI/N)+x;
yy[i]=10*sin(2*i*PI/N)+y;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//再内嵌一个三角形
glColor3f(0.0,0.0,1.0);
glBegin (GL_LINE_LOOP);
glVertex2f(-5.0+x, -2.5+y);
glVertex2f(5.0+x, -2.5+y);
glVertex2f(0.0+x, 5.0+y);
glEnd();
}
//眼部提取出来
void DrawEye1(int x,int y)
{
//画眼睛 左
glLoadIdentity();
glRotatef(theta, 0.0, 0.0, 1.0);
glTranslatef(0,0,30);
glColor3f(colors[EYE_COLOR][0],colors[EYE_COLOR][1],colors[EYE_COLOR][2]);
//glColor3f(0.0f,0.0f,0.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<N;i++)
{
xx[i]=6*cos(2*i*PI/N)+x;
yy[i]=6*sin(2*i*PI/N)+y;
glVertex2f(xx[i],yy[i]);
}
glEnd();
}
void DrawEye2(int x,int y)
{
//画眼睛 右
glLoadIdentity();
glRotatef(theta, 0.0, 0.0, 1.0);
glTranslatef(0,0,30);
glColor3f(colors[EYE1_COLOR][0],colors[EYE1_COLOR][1],colors[EYE1_COLOR][2]);
//glColor3f(0.0f,0.0f,0.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<N;i++)
{
xx[i]=6*cos(2*i*PI/N)+x;
yy[i]=6*sin(2*i*PI/N)+y;
glVertex2f(xx[i],yy[i]);
}
glEnd();
}
void DrawNose(int x,int y)
{
glLoadIdentity();
glRotatef(theta, 0.0, 0.0, 1.0);
glTranslatef(0,0,30);
//glColor3f(0.0f,0.0f,0.0f);
glColor3f(colors[NOSE_COLOR][0],colors[NOSE_COLOR][1],colors[NOSE_COLOR][2]);
glLineWidth(2);
glBegin(GL_LINES);
glVertex2f(-12+x,y);
glVertex2f(12+x,y);
glEnd();
}
void DrawCap(int x,int y)
{
//此处开始绘制帽子
glLoadIdentity();
glRotatef(theta, 0.0, 0.0, 1.0);
glTranslatef(0,0,30);
glBegin(GL_POLYGON);
glColor3f(1.0f,0.0f,0.0f);
glVertex2f(0+x,y-5);
glVertex2f(-13+x,y-10);
glColor3f(0.0f,1.0f,0.0f);
glVertex2f(-25+x,y-10);
glVertex2f(-12+x,y-2);
glColor3f(0.0f,0.0f,1.0f);
glVertex2f(0+x,y+20);
glVertex2f(12+x,y-2);
glColor3f(0.5f,0.5f,0.5f);
glVertex2f(25+x,y-10);
glVertex2f(13+x,y-10);
glEnd();
}
void DrawCrown(int x,int y)
{
//开始绘制王冠
glLoadIdentity();
glRotatef(theta, 0.0, 0.0, 1.0);
glTranslatef(0,0,30);
glColor3f(1.0f,1.0f,0.0f);
glColor3f(colors[CROWN_COLOR][0],colors[CROWN_COLOR][1],colors[CROWN_COLOR][2]);
glBegin(GL_POLYGON);
glVertex2f(-10+x,y-9);
glVertex2f(-13+x,6+y);
glVertex2f(-5+x,y-2);
glVertex2f(0+x,9+y);
glVertex2f(5+x,y-2);
glVertex2f(13+x,6+y);
glVertex2f(10+x,y-9);
glEnd();
}
void DrawClothes(int x,int y)
{
//衣服绘制
glLoadIdentity ();
glRotatef(theta, 0.0, 0.0, 1.0);
glTranslatef(0,0,30);
glColor3f(0.0f,0.0f,0.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<8;i++)
{
xx[i]=40*cos(2*i*PI/N)+x;
yy[i]=45*sin(2*i*PI/N)+y;
glVertex2f(xx[i],yy[i]);
}
for(int i=13;i<20;i++)
{
xx[i]=40*cos(2*i*PI/N)+x;
yy[i]=45*sin(2*i*PI/N)+y;
glVertex2f(xx[i],yy[i]);
}
for(int i=20;i<N;i++)
{
xx[i]=40*cos(2*i*PI/N)+x;
yy[i]=45*sin(2*i*PI/N)+y;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//衣服上的一些纹理绘制
glColor3f(1.0f,1.0f,1.0f);
glBegin(GL_LINE_LOOP);
glVertex2f(-7+x,40+y);
glVertex2f(0+x,20+y);
glVertex2f(7+x,40+y);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex2f(-20+x,20+y);
glVertex2f(-20+x,10+y);
glVertex2f(-10+x,10+y);
glVertex2f(-10+x,20+y);
glEnd();
glBegin(GL_LINES);
glVertex2f(0+x,0+y);
glVertex2f(0+x,-25+y);
glEnd();
glBegin(GL_LINES);
glVertex2f(0+x,-25+y);
glVertex2f(-10+x,-40+y);
glEnd();
glBegin(GL_LINES);
glVertex2f(0+x,-25+y);
glVertex2f(10+x,-40+y);
glEnd();
glColor3f(1.0f,1.0f,0.0f);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<N;i++)
{
xx[i]=4*cos(2*i*PI/N)+x;
yy[i]=4*sin(2*i*PI/N)+y;
glVertex2f(xx[i],yy[i]);
}
glEnd();
}
void DrawSuperman(int x,int y)
{
//绘制超人装
glLoadIdentity ();
glRotatef(theta, 0.0, 0.0, 1.0);
glTranslatef(0,0,20);
//glColor3f(0.5f,0.5f,0.75f);
glColor3f(colors[SUPERMAN_COLOR][0],colors[SUPERMAN_COLOR][1],colors[SUPERMAN_COLOR][2]);
glBegin(GL_POLYGON); //用线进行图形连接
for(int i=0;i<8;i++)
{
xx[i]=40*cos(2*i*PI/N)+x;
yy[i]=45*sin(2*i*PI/N)+y;
glVertex2f(xx[i],yy[i]);
}
for(int i=13;i<20;i++)
{
xx[i]=40*cos(2*i*PI/N)+x;
yy[i]=45*sin(2*i*PI/N)+y;
glVertex2f(xx[i],yy[i]);
}
for(int i=20;i<N;i++)
{
xx[i]=40*cos(2*i*PI/N)+x;
yy[i]=45*sin(2*i*PI/N)+y;
glVertex2f(xx[i],yy[i]);
}
glEnd();
//绘制超人标志
glColor3f(1.0f,1.0f,0.0f);
glBegin(GL_POLYGON);
glVertex2f(-14+x,30+y);
glVertex2f(14+x,30+y);
glVertex2f(20+x,21+y);
glVertex2f(0+x,0+y);
glVertex2f(-20+x,21+y);
glEnd();
glColor3f(1.0f,0.0f,0.0f);
glLineWidth(4);
glBegin(GL_LINE_LOOP);
glVertex2f(-15+x,30+y);
glVertex2f(15+x,30+y);
glVertex2f(21+x,21+y);
glVertex2f(0+x,-1+y);
glVertex2f(-21+x,21+y);
glEnd();
//绘制 S
selectFont(80, ANSI_CHARSET, "Comic Sans MS");
glColor3f(1.0f, 0.0f, 0.0f); //设置字体颜色
glRasterPos2i(-6+x, 10+y); //起始位置
drawString("S"); //输出的字符串
//绘制衣领
glColor3f(1.0f,0.0f,0.0f);
glBegin(GL_POLYGON);
glVertex2f(0+x,40+y);
glVertex2f(-20+x,40+y);
glVertex2f(-17+x,45+y);
glEnd();
glBegin(GL_POLYGON);
glVertex2f(0+x,40+y);
glVertex2f(20+x,40+y);
glVertex2f(17+x,45+y);
glEnd();
}
void RenderScene(void)
{
// Clear the window with current clearing color
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//旋转
paintViewportA();
// Save the matrix state and do the rotations
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
// Translate the whole scene out and into view
// glTranslatef(150.0f, 0.0f, -50.0f);
// Initialize the names stack
glInitNames();
glPushName(0);
//glLoadIdentity();
glLoadName(Glass);
DrawSphereTexture(GlassCor[0],GlassCor[1]);
glPushMatrix();
glLoadIdentity();
glLoadName(Stone);
DrawXiongzhang(StoneCor[0],StoneCor[1]);
glPushMatrix();
glLoadIdentity();
glLoadName(Eye);
DrawEye1(EyeCor[0],EyeCor[1]);
glPushMatrix();
glLoadIdentity();
glLoadName(Eye1);
DrawEye2(EyeCor1[0],EyeCor1[1]);
glPushMatrix();
glLoadIdentity();
glLoadName(Nose);
DrawNose(NoseCor[0],NoseCor[1]);
glPushMatrix();
glLoadIdentity();
glLoadName(Cap);
DrawCap(CapCor[0],CapCor[1]);
glPopMatrix();
glPushMatrix();
glLoadIdentity();
glLoadName(Crown);
DrawCrown(CrownCor[0],CrownCor[1]);
glPopMatrix();
glPushMatrix();
glLoadIdentity();
glLoadName(Clothes);
DrawClothes(ClothesCor[0],ClothesCor[1]);
glPopMatrix();
glPushMatrix();
glLoadIdentity();
glLoadName(Superman);
DrawSuperman(SupermanCor[0],SupermanCor[1]);
glPopMatrix();
glPopMatrix();
glPopMatrix();
glPopMatrix();
glPopMatrix();
// Restore the matrix state
glPopMatrix(); // Modelview matrix
glutSwapBuffers();
}
//此处开始添加多重视口 此处简化 不采用多重视角
void paintViewportA()
{
int _width=Wide/8;
int _height=High/6;
glColor3f(1,1,1);
glBegin(GL_LINES);
glVertex2f(_width,-_height);
glVertex2f(_width,_height);
glEnd();
glBegin(GL_LINES);
glVertex2f(_width,_height/3);
glVertex2f(2*_width,_height/3);
glEnd();
glBegin(GL_LINES);
glVertex2f(_width,2*_height/3);
glVertex2f(2*_width,2*_height/3);
glEnd();
glBegin(GL_LINES);
glVertex2f(_width,0);
glVertex2f(2*_width,0);
glEnd();
}
void ProcessPlanet(GLuint id)
{
switch(id)
{
case Glass:
// glutSetWindowTitle("You clicked on the Glass!");
GLASS_STATE = TRUE;
STONE_STATE = FALSE;
EYE_STATE=FALSE;
EYE1_STATE=FALSE;
NOSE_STATE=FALSE;
CAP_STATE=FALSE;
CROWN_STATE=FALSE;
CLOTHES_STATE=FALSE;
SUPERMAN_STATE=FALSE;
select_part=Glass;
printf("Glass \n");
break;
case Stone:
// glutSetWindowTitle("You clicked on Stone!");
STONE_STATE = TRUE;
GLASS_STATE = FALSE;
EYE_STATE=FALSE;
EYE1_STATE=FALSE;
NOSE_STATE=FALSE;
CAP_STATE=FALSE;
CROWN_STATE=FALSE;
CLOTHES_STATE=FALSE;
SUPERMAN_STATE=FALSE;
select_part=Stone;
printf("Stone \n");
break;
case Eye:
STONE_STATE = FALSE;
GLASS_STATE = FALSE;
EYE_STATE=TRUE;
EYE1_STATE=FALSE;
NOSE_STATE=FALSE;
CAP_STATE=FALSE;
CROWN_STATE=FALSE;
CLOTHES_STATE=FALSE;
SUPERMAN_STATE=FALSE;
select_part=Eye;
printf("Eye \n");
break;
case Eye1:
STONE_STATE = FALSE;
GLASS_STATE = FALSE;
EYE_STATE=FALSE;
EYE1_STATE=TRUE;
NOSE_STATE=FALSE;
CAP_STATE=FALSE;
CROWN_STATE=FALSE;
CLOTHES_STATE=FALSE;
SUPERMAN_STATE=FALSE;
select_part=Eye1;
break;
case Nose:
STONE_STATE = FALSE;
GLASS_STATE = FALSE;
EYE_STATE=FALSE;
EYE1_STATE=FALSE;
NOSE_STATE=TRUE;
CAP_STATE=FALSE;
CROWN_STATE=FALSE;
CLOTHES_STATE=FALSE;
SUPERMAN_STATE=FALSE;
select_part=Nose;
break;
case Cap:
STONE_STATE = FALSE;
GLASS_STATE = FALSE;
EYE_STATE=FALSE;
EYE1_STATE=FALSE;
NOSE_STATE=FALSE;
CAP_STATE=TRUE;
CROWN_STATE=FALSE;
CLOTHES_STATE=FALSE;
SUPERMAN_STATE=FALSE;
select_part=Cap;
break;
case Crown:
STONE_STATE = FALSE;
GLASS_STATE = FALSE;
EYE_STATE=FALSE;
EYE1_STATE=FALSE;
NOSE_STATE=FALSE;
CAP_STATE=FALSE;
CROWN_STATE=TRUE;
CLOTHES_STATE=FALSE;
SUPERMAN_STATE=FALSE;
select_part=Crown;
break;
case Clothes:
STONE_STATE = FALSE;
GLASS_STATE = FALSE;
EYE_STATE=FALSE;
EYE1_STATE=FALSE;
NOSE_STATE=FALSE;
CAP_STATE=FALSE;
CROWN_STATE=FALSE;
CLOTHES_STATE=TRUE;
SUPERMAN_STATE=FALSE;
select_part=Clothes;
break;
case Superman:
STONE_STATE = FALSE;
GLASS_STATE = FALSE;
EYE_STATE=FALSE;
EYE1_STATE=FALSE;
NOSE_STATE=FALSE;
CAP_STATE=FALSE;
CROWN_STATE=FALSE;
CLOTHES_STATE=FALSE;
SUPERMAN_STATE=TRUE;
select_part=Superman;
break;
}
}
#define BUFFER_LENGTH 64
void ProcessSelection(int xPos, int yPos)
{
GLfloat fAspect;
// Space for selection buffer
static GLuint selectBuff[BUFFER_LENGTH];
// Hit counter and viewport storage
GLint hits, viewport[4];
// Setup selection buffer
glSelectBuffer(BUFFER_LENGTH, selectBuff);
// Get the viewport
glGetIntegerv(GL_VIEWPORT, viewport);
// Switch to projection and save the matrix
glMatrixMode(GL_PROJECTION);
glPushMatrix();
// Change render mode
glRenderMode(GL_SELECT);
// Establish new clipping volume to be unit cube around
// mouse cursor point (xPos, yPos) and extending two pixels
// in the vertical and horizontal direction
glLoadIdentity();
gluPickMatrix(xPos, viewport[3] - yPos, 2,2, viewport);
//应用透视投影矩阵
fAspect = (float)viewport[2] / (float)viewport[3];
if (viewport[2]<=viewport[3])
{
glOrtho(-100,100,-100*fAspect,100*fAspect,-100,100);
}
else
{
glOrtho(-100*fAspect,100*fAspect,-100,100,-100,100);
}
// Draw the scene
RenderScene();
// Collect the hits
hits = glRenderMode(GL_RENDER);
// If a single hit occurred, display the info.
if(hits > 0)
{
int Choose = selectBuff[3];
int depth = selectBuff[1];
printf("1 ************ %d %d ",Choose,depth);
for (int loop=1;loop<hits;loop++)
{
if (selectBuff[loop*4+1] < GLuint(depth))
{
Choose = selectBuff[loop*4+3];
depth = selectBuff[loop*4+1];
}
printf(">2 ************ %d %d ",Choose,depth);
}
printf("************ %d %d \n",hits,Choose);
ProcessPlanet(GLuint (Choose));
}
// Restore the projection matrix
glMatrixMode(GL_PROJECTION);
glPopMatrix();
// Go back to modelview for normal rendering
glMatrixMode(GL_MODELVIEW);
}
///////////////////////////////////////////////////////////
// Process the mouse click
void MouseCallback(int button, int state, int x, int y)
{
if(button == GLUT_LEFT_BUTTON && state == GLUT_DOWN)
ProcessSelection(x, y);
if (button == GLUT_LEFT_BUTTON && state == GLUT_UP)
{
GLASS_STATE = FALSE;
STONE_STATE = FALSE;
EYE_STATE = FALSE;
EYE1_STATE = FALSE;
NOSE_STATE=FALSE;
CAP_STATE=FALSE;
CROWN_STATE=FALSE;
CLOTHES_STATE=FALSE;
SUPERMAN_STATE=FALSE;
}
}
void MouseMoveCallback(int x,int y)
{
GLint viewport[4];
GLfloat fA;
glGetIntegerv(GL_VIEWPORT,viewport);
fA = (float)viewport[2]/(float)viewport[3];
if (GLASS_STATE == TRUE)
{
if (viewport[2]<=viewport[3])
{
GlassCor[0] = -100 + 200*x/viewport[2];
GlassCor[1] = -100*fA + (viewport[3]-y)*200*fA/viewport[3];
}
else
{
GlassCor[0] = -100*fA + 200*fA*x/viewport[2];
GlassCor[1] = -100 + (viewport[3]-y)*200/viewport[3];
}
RenderScene();
}
if (STONE_STATE == TRUE)
{
if (viewport[2]<=viewport[3])
{
StoneCor[0] = -100 + 200*x/viewport[2];
StoneCor[1] = -100*fA + (viewport[3]-y)*200*fA/viewport[3];
}
else
{
StoneCor[0] = -100*fA + 200*fA*x/viewport[2];
StoneCor[1] = -100 + (viewport[3]-y)*200/viewport[3];
}
RenderScene();
}
if (EYE_STATE == TRUE)
{
if (viewport[2]<=viewport[3])
{
EyeCor[0] = -100 + 200*x/viewport[2];
EyeCor[1] = -100*fA + (viewport[3]-y)*200*fA/viewport[3];
}
else
{
EyeCor[0] = -100*fA + 200*fA*x/viewport[2];
EyeCor[1] = -100 + (viewport[3]-y)*200/viewport[3];
}
RenderScene();
}
if (EYE1_STATE == TRUE)
{
if (viewport[2]<=viewport[3])
{
EyeCor1[0] = -100 + 200*x/viewport[2];
EyeCor1[1] = -100*fA + (viewport[3]-y)*200*fA/viewport[3];
}
else
{
EyeCor1[0] = -100*fA + 200*fA*x/viewport[2];
EyeCor1[1] = -100 + (viewport[3]-y)*200/viewport[3];
}
RenderScene();
}
if (NOSE_STATE == TRUE)
{
if (viewport[2]<=viewport[3])
{
NoseCor[0] = -100 + 200*x/viewport[2];
NoseCor[1] = -100*fA + (viewport[3]-y)*200*fA/viewport[3];
}
else
{
NoseCor[0] = -100*fA + 200*fA*x/viewport[2];
NoseCor[1] = -100 + (viewport[3]-y)*200/viewport[3];
}
RenderScene();
}
if (CAP_STATE == TRUE)
{
if (viewport[2]<=viewport[3])
{
CapCor[0] = -100 + 200*x/viewport[2];
CapCor[1] = -100*fA + (viewport[3]-y)*200*fA/viewport[3];
}
else
{
CapCor[0] = -100*fA + 200*fA*x/viewport[2];
CapCor[1] = -100 + (viewport[3]-y)*200/viewport[3];
}
RenderScene();
}
if (CROWN_STATE == TRUE)
{
if (viewport[2]<=viewport[3])
{
CrownCor[0] = -100 + 200*x/viewport[2];
CrownCor[1] = -100*fA + (viewport[3]-y)*200*fA/viewport[3];
}
else
{
CrownCor[0] = -100*fA + 200*fA*x/viewport[2];
CrownCor[1] = -100 + (viewport[3]-y)*200/viewport[3];
}
RenderScene();
}
if (CLOTHES_STATE == TRUE)
{
if (viewport[2]<=viewport[3])
{
ClothesCor[0] = -100 + 200*x/viewport[2];
ClothesCor[1] = -100*fA + (viewport[3]-y)*200*fA/viewport[3];
}
else
{
ClothesCor[0] = -100*fA + 200*fA*x/viewport[2];
ClothesCor[1] = -100 + (viewport[3]-y)*200/viewport[3];
}
RenderScene();
}
if (SUPERMAN_STATE == TRUE)
{
if (viewport[2]<=viewport[3])
{
SupermanCor[0] = -100 + 200*x/viewport[2];
SupermanCor[1] = -100*fA + (viewport[3]-y)*200*fA/viewport[3];
}
else
{
SupermanCor[0] = -100*fA + 200*fA*x/viewport[2];
SupermanCor[1] = -100 + (viewport[3]-y)*200/viewport[3];
}
RenderScene();
}
}
///////////////////////////////////////////////////////////
// This function does any needed initialization on the
// rendering context.
void InitGL()
{
GLASS_STATE = FALSE;
STONE_STATE = FALSE;
EYE_STATE = FALSE;
EYE1_STATE = FALSE;
NOSE_STATE=FALSE;
CAP_STATE=FALSE;
CROWN_STATE=FALSE;
CLOTHES_STATE=FALSE;
SUPERMAN_STATE=FALSE;
// GlassCor[3] = {0,0,0};
// StoneCor[3] = {50,0,-50};
//LoadGLTextures("glass.bmp",0);
//LoadGLTextures("glass4.bmp",1);
// Gray background
glEnable(GL_BLEND);
// glColor4f(1.0f, 1.0f, 1.0f, 0.3); // Full Brightness. 50% Alpha
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
// glEnable(GL_COLOR_MATERIAL);
// glColorMaterial(GL_FRONT,GL_AMBIENT_AND_DIFFUSE);
}
void ChangeSize(int w, int h)
{
GLfloat fAspect;
// Prevent a divide by zero
if(h == 0)
h = 1;
Wide=w;
High=h;
// Set Viewport to window dimensions
glViewport(0, 0, w, h);
// Calculate aspect ratio of the window
fAspect = (GLfloat)w/(GLfloat)h;
// Set the perspective coordinate system
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
// Field of view of 45 degrees, near and far planes 1.0 and 425
// gluPerspective(0.0f, fAspect, 1.0, 425.0);
if (w<=h)
{
glOrtho(-100,100,-100*fAspect,100*fAspect,-100,100);
}
else
{
glOrtho(-100*fAspect,100*fAspect,-100,100,-100,100);
}
// Modelview matrix reset
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
//开启反走样
glEnable( GL_BLEND);
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glHint( GL_POLYGON_SMOOTH_HINT, GL_NICEST);
glEnable( GL_POLYGON_SMOOTH);
glEnable( GL_POINT_SMOOTH);
glEnable( GL_LINE_SMOOTH);
}
void drawString(const char* str) //屏幕显示字体
{
static int isFirstCall = 1;
static GLuint lists;
if (isFirstCall) {
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);
}
}
void selectFont(int size, int charset, const char* face) {
HFONT hFont = CreateFontA(size, 0, 0, 0, FW_MEDIUM, 0, 0, 0,
charset, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,
DEFAULT_QUALITY, DEFAULT_PITCH | FF_SWISS, face);
HFONT hOldFont = (HFONT)SelectObject(wglGetCurrentDC(), hFont);
DeleteObject(hOldFont);
}
void menu(int index){
switch (select_part) {
case Eye:
EYE_COLOR = index;
break;
case Eye1:
EYE1_COLOR = index;
break;
case Nose:
NOSE_COLOR = index;
break;
case Crown:
CROWN_COLOR = index;
break;
case Superman:
SUPERMAN_COLOR = index;
break;
}
//此处解决颜色闪烁问题
glutPostRedisplay();
RenderScene();
}
void mySpecial(int key, int x, int y){
switch (key)
{
case GLUT_KEY_UP:
theta = (theta+10);
glutPostRedisplay();
break;
case GLUT_KEY_DOWN:
theta = (theta-10);
glutPostRedisplay();
break;
}
}
void myKeyboard(unsigned char key, int x, int y){
switch (key)
{
}
}
int main(int argc, char* argv[])
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize(800,600);
glutCreateWindow("OpenGL");
InitGL();
glutReshapeFunc(ChangeSize);
glutMouseFunc(MouseCallback);
glutMotionFunc(MouseMoveCallback);
glutKeyboardFunc(myKeyboard);
glutSpecialFunc(mySpecial);
glutDisplayFunc(RenderScene);
glutCreateMenu(menu);
glutAddMenuEntry("黑色", 0);
glutAddMenuEntry("红色", 1);
glutAddMenuEntry("绿色", 2);
glutAddMenuEntry("蓝色", 3);
glutAddMenuEntry("青色", 4);
glutAddMenuEntry("紫色", 5);
glutAddMenuEntry("黄色", 6);
glutAddMenuEntry("白色", 7);
glutAttachMenu(GLUT_RIGHT_BUTTON);
glutMainLoop();
return 0;
}
再贴张图吧- -
