咻碰閃week16

 week16

好想放假

1 clone 2023graphicsb資料夾，開新專案week16_all，總複習

step01 點線面色彩

#include <GL/glut.h>

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glColor3f(1,1,0);

    glBegin(GL_POLYGON);

        glVertex2f(0.5,0.5);

        glVertex2f(-0.5,0.5);

        glVertex2f(-0.5,-0.5);

        glVertex2f(0.5,-0.5);

    glEnd();

    glColor3f(0,1,0);

    glutSolidTeapot(0.3);

    glutSwapBuffers();

}

int main(int argc,char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week16");

    glutDisplayFunc(display);

    glutMainLoop();

}

step02 滑鼠拖曳物件移動

#include <GL/glut.h>

float teapotX = 0, teapotY = 0;

void motion(int x,int y)

{

    teapotX = (x-150)/150.0;

    teapotY = (150-y)/150.0;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glTranslatef(teapotX, teapotY, 0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week16");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMainLoop();

}

step03 滑鼠拖曳旋轉

 

#include <GL/glut.h>

float teapotX = 0, teapotY = 0, angle = 0, oldX = 0, oldY = 0;

void mouse(int button,int state,int x,int y)

{

    oldX = x;

    oldY = y;

}

void motion(int x,int y)

{

    teapotX = (x-150)/150.0;

    teapotY = (150-y)/150.0;

    angle += x-oldX;

    oldX = x;

    glutPostRedisplay();

}

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glRotatef(angle,0,0,1);

        ///glTranslatef(teapotX, teapotY, 0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

int main(int argc,char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week16");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMouseFunc(mouse);

    glutMainLoop();

}

step04 位置

#include <stdio.h>

#include <GL/glut.h>

float teapotX = 0, teapotY = 0, angle = 0, oldX = 0, oldY = 0;

void mouse(int button, int state, int x, int y) {

    oldX = x;

    oldY = y;

}

void motion(int x, int y) {

    teapotX = (x-150)/150.0;

    teapotY = (150-y)/150.0;

    angle += x - oldX;

    oldX = x;

    glutPostRedisplay();

    printf("  glTranslatef( %.2f, %.2f, 0 ); \n", teapotX, teapotY );

}

void display() {

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glColor3f(1,1,1);

        //glRotatef(angle, 0, 0, 1);

        glTranslatef(teapotX, teapotY, 0);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glColor3f(0,1,0);

    glutSolidTeapot( 0.02 );

    glutSwapBuffers();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week16");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMouseFunc(mouse);

    glutMainLoop();

}

step05 複製位置，定錨點，讓茶壺旋轉

void display()

{

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glColor3f(1,1,1);

        glRotatef(angle,0,0,1);

        ///glTranslatef( 0.45, -0.05 ,0);

        glTranslatef( 0.45, -0.05 ,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glColor3f(0,1,0);

    glutSolidTeapot(0.02);

    glutSwapBuffers();

}

step06 

 

void display() {

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glColor3f(1,1,1);

        glTranslatef(-0.42, +0.06, 0 ); //負變正正變負

        glRotatef(angle, 0, 0, 1);

        glTranslatef( 0.42, -0.06, 0 );//glTranslatef(teapotX, teapotY, 0);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

    glColor3f(0,1,0);

    glutSolidTeapot( 0.02 );

    glutSwapBuffers();

}

step07 更改路徑

複製freeglut.dll到資料夾內

無法執行

從week10複製glm.cpp和glm.h到week16資料夾

新增glm.cpp，加程式碼

模型太大

縮小、加顏色

複製week7-2_myTexture程式碼

安裝OpenCV 選第二個path的選項

Setting>Compiler>Search directories>Complier>C:\OpenCV2.1\include

                                                      >Linker>C:\OpenCV2.1\lib

                            

Setting>Compiler>Linker setting>cv210、cxcore210、highgu210

                  

重開Codeblocks

#include <opencv/highgui.h> ///使用 OpenCV 2.1 比較簡單, 只要用 High GUI 即可

#include <opencv/cv.h>

#include <GL/glut.h>

int myTexture(char * filename)

{

    IplImage * img = cvLoadImage(filename); ///OpenCV讀圖

    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩 (需要cv.h)

    glEnable(GL_TEXTURE_2D); ///1. 開啟貼圖功能

    GLuint id; ///準備一個 unsigned int 整數, 叫 貼圖ID

    glGenTextures(1, &id); /// 產生Generate 貼圖ID

    glBindTexture(GL_TEXTURE_2D, id); ///綁定bind 貼圖ID

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖T, 就重覆貼圖

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖S, 就重覆貼圖

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /// 貼圖參數, 放大時的內插, 用最近點

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); /// 貼圖參數, 縮小時的內插, 用最近點

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);

    return id;

}

#include <stdio.h>

#include <GL/glut.h>

#include "glm.h"

GLMmodel * gundam = NULL;

float teapotX = 0, teapotY = 0, angle = 0, oldX = 0, oldY = 0;

void mouse(int button, int state, int x, int y) {

    oldX = x;

    oldY = y;

}

void motion(int x, int y) {

    teapotX = (x-150)/150.0;

    teapotY = (150-y)/150.0;

    angle += x - oldX;

    oldX = x;

    glutPostRedisplay();

    printf("  glTranslatef( %.2f, %.2f, 0 ); \n", teapotX, teapotY );

}

void display() {

    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);

    glPushMatrix();

        glColor3f(1,1,1);

        glScalef(0.04, 0.04, 0.04);

        glRotatef(angle, 0, 1, 0);

        glmDraw(gundam, GLM_MATERIAL|GLM_TEXTURE);

    glPopMatrix();

    glColor3f(0,1,0);

    glutSolidTeapot( 0.02 );

    glutSwapBuffers();

}

int main(int argc, char** argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);

    glutCreateWindow("week16");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMouseFunc(mouse);

    gundam = glmReadOBJ("model/Gundam.obj");

    myTexture("model/Diffuse.jpg");

    glEnable(GL_DEPTH_TEST);

    glutMainLoop();

}