2014年6月12日 星期四

week12

 貼圖程式碼
void myTexture()
{
GLuint id;
IplImage * img = cvLoadImage("01.png");
cvCvtColor(img, img, CV_BGR2RGB);
glEnable(GL_TEXTURE_2D);
glGenTextures(1, &id);
glBindTexture(GL_TEXTURE_2D, id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
}

打光程式碼
void myLight()
{
const GLfloat light_position[] = { 2.0f, 5.0f, -5.0f, 0.0f };
glEnable(GL_LIGHT0);
glEnable(GL_NORMALIZE);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHTING);
glLightfv(GL_LIGHT0, GL_POSITION, light_position);
}
 貼圖木頭人偶
void display()
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glPushMatrix();
glScalef(0.4,0.9,0.5);
glBegin(GL_POLYGON);
glTexCoord2f(0,0); glVertex3f(-0.5,0.5,0);
glTexCoord2f(0,1); glVertex3f(-0.5,-0.5,0);
glTexCoord2f(1,1); glVertex3f(0.5,-0.5,0);
glTexCoord2f(1,0); glVertex3f(0.5,0.5,0);
glPopMatrix();
glRotatef(angleX,0,1,0);
glPopMatrix();
glutSwapBuffers();
}
以下的程式,很常不好
#include <GL/glut.h>
#include <opencv/highgui.h>
#include <opencv/cv.h>
float angleX =0;

void myTexture()
{
GLuint id;
IplImage * img = cvLoadImage("imgBody.png");
cvCvtColor(img, img, CV_BGR2RGB);
glEnable(GL_TEXTURE_2D);
glGenTextures(1, &id);
glBindTexture(GL_TEXTURE_2D, id);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);
}
void display()
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glPushMatrix();//body
glScalef(0.2, 0.5, 0.5);
glBegin(GL_POLYGON);
glTexCoord2f(0,0);  glVertex3f(-0.5, 0.5,0);
glTexCoord2f(0,1);  glVertex3f(-0.5,-0.5,0);
glTexCoord2f(1,1);  glVertex3f( 0.5,-0.5,0);
glTexCoord2f(1,0);  glVertex3f( 0.5, 0.5,0);
glEnd();
glPopMatrix();
glPushMatrix();//left hand
glTranslatef(-0.1, 0, 0);
glRotatef(angleX, 0,0,1);
glTranslatef(0, 0.25, 0);
glScalef(0.2, 0.5, 0.5);
glBegin(GL_POLYGON);
glTexCoord2f(0,0);  glVertex3f(-0.5, 0.5,0);
glTexCoord2f(0,1);  glVertex3f(-0.5,-0.5,0);
glTexCoord2f(1,1);  glVertex3f( 0.5,-0.5,0);
glTexCoord2f(1,0);  glVertex3f( 0.5, 0.5,0);
glEnd();
glPopMatrix();
glPushMatrix();//right hand
glTranslatef( 0.1, 0, 0);
glRotatef(-angleX, 0,0,1);
glTranslatef(0, 0.25, 0);
glScalef(0.2, 0.5, 0.5);
glBegin(GL_POLYGON);
glTexCoord2f(0,0);  glVertex3f(-0.5, 0.5,0);
glTexCoord2f(0,1);  glVertex3f(-0.5,-0.5,0);
glTexCoord2f(1,1);  glVertex3f( 0.5,-0.5,0);
glTexCoord2f(1,0);  glVertex3f( 0.5, 0.5,0);
glEnd();
glPopMatrix();
glPushMatrix();//left leg
glTranslatef( -0.05, -0.25, 0);
glRotatef(180-angleX, 0,0,1);
glTranslatef(0, 0.25, 0);
glScalef(0.2, 0.5, 0.5);
glBegin(GL_POLYGON);
glTexCoord2f(0,0);  glVertex3f(-0.5, 0.5,0);
glTexCoord2f(0,1);  glVertex3f(-0.5,-0.5,0);
glTexCoord2f(1,1);  glVertex3f( 0.5,-0.5,0);
glTexCoord2f(1,0);  glVertex3f( 0.5, 0.5,0);
glEnd();
glPopMatrix();
glPushMatrix();//right leg
glTranslatef( 0.05, -0.25, 0);
glRotatef(-(180-angleX), 0,0,1);
glTranslatef(0, 0.25, 0);
glScalef(0.2, 0.5, 0.5);
glBegin(GL_POLYGON);
glTexCoord2f(0,0);  glVertex3f(-0.5, 0.5,0);
glTexCoord2f(0,1);  glVertex3f(-0.5,-0.5,0);
glTexCoord2f(1,1);  glVertex3f( 0.5,-0.5,0);
glTexCoord2f(1,0);  glVertex3f( 0.5, 0.5,0);
glEnd();
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
void keyboard(unsigned char key, int x, int y)
{
if(key=='1') angleX+=5;
if(key=='2') angleX-=5;
glutPostRedisplay();//請電腦重新畫一次畫面
}
int main()
{
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week11");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
myTexture();

glutMainLoop();
}
=============================================
更正後，縮短程式碼
#include <GL/glut.h>
#include <opencv/highgui.h>
#include <opencv/cv.h>
float angleX =0;

void myTexture()
{
 GLuint id;
 IplImage * img = cvLoadImage("imgBody.png");
 cvCvtColor(img, img, CV_BGR2RGB);
 glEnable(GL_TEXTURE_2D);
 glGenTextures(1, &id);
 glBindTexture(GL_TEXTURE_2D, id);
 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData); 
}
void myRect()//技巧1: 重覆的程式碼, 用函式拉出來, 就不用一直copy啦
{//函式就是 黑盒子 幫你做事情!
 glPushMatrix();
  glScalef(0.2, 0.5, 0.5);
  glBegin(GL_POLYGON);
   glTexCoord2f(0,0);  glVertex3f(-0.5, 0.5,0);
   glTexCoord2f(0,1);  glVertex3f(-0.5,-0.5,0);
   glTexCoord2f(1,1);  glVertex3f( 0.5,-0.5,0);
   glTexCoord2f(1,0);  glVertex3f( 0.5, 0.5,0);
  glEnd();
 glPopMatrix(); 
}
void display()
{
 glEnable(GL_DEPTH_TEST);
 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 glPushMatrix();
  myRect();//body//技巧1: 用函式, 哥就是帥!
  glPushMatrix();//left hand
   glTranslatef(-0.1, 0, 0);
   glRotatef(angleX, 0,0,1);
   glTranslatef(0, 0.25, 0);
   myRect();//技巧1: 用函式, 哥就是帥!
  glPopMatrix();
  glPushMatrix();//right hand
   glTranslatef( 0.1, 0, 0);
   glRotatef(-angleX, 0,0,1);
   glTranslatef(0, 0.25, 0);
   myRect();//技巧1: 用函式, 哥就是帥!
  glPopMatrix();
  glPushMatrix();//left leg
   glTranslatef( -0.05, -0.25, 0);
   glRotatef(180-angleX, 0,0,1);
   glTranslatef(0, 0.25, 0);
   myRect();
   glPushMatrix();//left foot
    glTranslatef( 0, 0.25, 0);
    glRotatef(30, 0,0,1);
    glTranslatef(0, 0.15, 0);
    myRect();
   glPopMatrix();   
  glPopMatrix();
  glPushMatrix();//right leg
   glTranslatef( 0.05, -0.25, 0);
   glRotatef(-(180-angleX), 0,0,1);
   glTranslatef(0, 0.25, 0);
   myRect();
  glPopMatrix();
 glPopMatrix();
 glutSwapBuffers();
}
void keyboard(unsigned char key, int x, int y)
{
 if(key=='1') angleX+=5;
 if(key=='2') angleX-=5;
 glutPostRedisplay();//請電腦重新畫一次畫面
}
int main()
{
 glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
 glutCreateWindow("week11");
 glutDisplayFunc(display);
 glutKeyboardFunc(keyboard);
 myTexture();

 glutMainLoop();

}
===換上不同的貼圖，但程式碼很長====
#include <GL/glut.h>
#include <opencv/highgui.h>
#include <opencv/cv.h>
float angleX =0;
GLuint id0;
GLuint id1;
GLuint id2;
GLuint id3;
void myTexture()
{
IplImage * img0 = cvLoadImage("imgBody.png");
IplImage * img1 = cvLoadImage("imgHand0.png");
IplImage * img2 = cvLoadImage("imgLeg0.png");
IplImage * img3 = cvLoadImage("imgLeg1.png");
cvCvtColor(img0, img0, CV_BGR2RGB);
cvCvtColor(img1, img1, CV_BGR2RGB);
cvCvtColor(img2, img2, CV_BGR2RGB);
cvCvtColor(img3, img3, CV_BGR2RGB);
glEnable(GL_TEXTURE_2D);
glGenTextures(1, &id0);
glGenTextures(1, &id1);
glGenTextures(1, &id2);
glGenTextures(1, &id3);
glBindTexture(GL_TEXTURE_2D, id0);//head
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img0->width, img0->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img0->imageData);

glBindTexture(GL_TEXTURE_2D, id1);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img1->width, img1->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img1->imageData);

glBindTexture(GL_TEXTURE_2D, id2);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img2->width, img2->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img2->imageData);

glBindTexture(GL_TEXTURE_2D, id3);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img3->width, img3->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img3->imageData);

}
void myRect()//技巧1: 重覆的程式碼, 用函式拉出來, 就不用一直copy啦
{//函式就是 黑盒子 幫你做事情!
glPushMatrix();
glScalef(0.2, 0.5, 0.5);
glBegin(GL_POLYGON);
glTexCoord2f(0,0);  glVertex3f(-0.5, 0.5,0);
glTexCoord2f(0,1);  glVertex3f(-0.5,-0.5,0);
glTexCoord2f(1,1);  glVertex3f( 0.5,-0.5,0);
glTexCoord2f(1,0);  glVertex3f( 0.5, 0.5,0);
glEnd();
glPopMatrix();
}
void display()
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glBindTexture(GL_TEXTURE_2D, id0);
myRect();//body//技巧1: 用函式, 哥就是帥!
glPushMatrix();//left hand
glTranslatef(-0.1, 0.15, 0);
glRotatef(angleX, 0,0,1);
glTranslatef(0, -0.25, 0);
glBindTexture(GL_TEXTURE_2D, id1);
myRect();//技巧1: 用函式, 哥就是帥!
glPopMatrix();
glPushMatrix();//right hand
glTranslatef(0.1, 0.15, 0);
glRotatef(-angleX, 0,0,1);
glTranslatef(0, -0.25, 0);
glBindTexture(GL_TEXTURE_2D, id1);
myRect();//技巧1: 用函式, 哥就是帥!
glPopMatrix();
glPushMatrix();//left leg
glTranslatef( -0.05, -0.25, 0);
glRotatef(180-angleX, 0,0,1);
glTranslatef(0, 0.25, 0);
glBindTexture(GL_TEXTURE_2D, id2);
myRect();
glPushMatrix();//left foot
glTranslatef( 0, 0.25, 0);
glRotatef(30, 0,0,1);
glTranslatef(0, 0.15, 0);
glBindTexture(GL_TEXTURE_2D, id3);
myRect();
glPopMatrix();
glPopMatrix();
glPushMatrix();//right leg
glTranslatef( 0.05, -0.25, 0);
glRotatef(-(180-angleX), 0,0,1);
glTranslatef(0, 0.25, 0);
myRect();
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
void keyboard(unsigned char key, int x, int y)
{
if(key=='1') angleX+=5;
if(key=='2') angleX-=5;
glutPostRedisplay();//請電腦重新畫一次畫面
}
int main()
{
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week11");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
myTexture();

glutMainLoop();
}
=====使用迴圈+陣列，縮短程式碼======
#include <GL/glut.h>
#include <opencv/highgui.h>
#include <opencv/cv.h>
float angleX =0, angle0=0, angle1=0, angle2=0, angle3=0;
GLuint id[4];//技巧2: 使用陣列, 讓變數 變 簡單 simple
IplImage * img[4];
char filename[4][100]={"imgBody.png", "imgHand0.png", "imgLeg0.png", "imgLeg1.png"};
void myTexture()
{
glEnable(GL_TEXTURE_2D);
for(int i=0; i<4; i++){//技巧3: 迴圈, 可以讓程式碼, 做重覆的事可以很爽 清爽
img[i] = cvLoadImage( filename[i] );
cvCvtColor(img[i], img[i], CV_BGR2RGB);
glGenTextures(1, &id[i]);
glBindTexture(GL_TEXTURE_2D, id[i]);//head
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img[i]->width, img[i]->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img[i]->imageData);
}
}
void myRect()//技巧1: 重覆的程式碼, 用函式拉出來, 就不用一直copy啦
{//函式就是 黑盒子 幫你做事情!
glPushMatrix();
glScalef(0.2, 0.5, 0.5);
glBegin(GL_POLYGON);
glTexCoord2f(0,0);  glVertex3f(-0.5, 0.5,0);
glTexCoord2f(0,1);  glVertex3f(-0.5,-0.5,0);
glTexCoord2f(1,1);  glVertex3f( 0.5,-0.5,0);
glTexCoord2f(1,0);  glVertex3f( 0.5, 0.5,0);
glEnd();
glPopMatrix();
}
void display()
{
glEnable(GL_DEPTH_TEST);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glBindTexture(GL_TEXTURE_2D, id[0]);
myRect();//body//技巧1: 用函式, 哥就是帥!
glPushMatrix();//left hand
glTranslatef(-0.1, 0.15, 0);
glRotatef(angleX, 0,0,1);
glTranslatef(0, -0.25, 0);
glBindTexture(GL_TEXTURE_2D, id[1]);
myRect();//技巧1: 用函式, 哥就是帥!
glPopMatrix();
glPushMatrix();//right hand
glTranslatef(0.1, 0.15, 0);
glRotatef(-angleX, 0,0,1);
glTranslatef(0, -0.25, 0);
glBindTexture(GL_TEXTURE_2D, id[1]);
myRect();//技巧1: 用函式, 哥就是帥!
glPopMatrix();
glPushMatrix();//left leg
glTranslatef( -0.05, -0.25, 0);
glRotatef(180-angleX, 0,0,1);
glTranslatef(0, 0.25, 0);
glBindTexture(GL_TEXTURE_2D, id[2]);
myRect();
glPushMatrix();//left foot
glTranslatef( 0, 0.25, 0);
glRotatef(30, 0,0,1);
glTranslatef(0, 0.15, 0);
glBindTexture(GL_TEXTURE_2D, id[3]);
myRect();
glPopMatrix();
glPopMatrix();
glPushMatrix();//right leg
glTranslatef( 0.05, -0.25, 0);
glRotatef(-(180-angleX), 0,0,1);
glTranslatef(0, 0.25, 0);
glBindTexture(GL_TEXTURE_2D, id[2]);
myRect();
glPopMatrix();
glPopMatrix();
glutSwapBuffers();
}
void keyboard(unsigned char key, int x, int y)
{
if(key=='1') angleX+=5;
if(key=='2') angleX-=5;
glutPostRedisplay();//請電腦重新畫一次畫面
}
int main()
{
glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
glutCreateWindow("week11");
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
myTexture();

glutMainLoop();
}
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