week03 mouse

Week03

先到https://jsyeh.org/3dcg10/ 下載

1.data data.zip

2.win32 windows.zip

3.glut32.d11

解壓縮

1.data data.zip

2.win32 windows.zip

3.glut32.d11

把data裡的資料夾放到windows裡

開啟Transformation.exe

作業1

先開GLUT project，從老師上課軟體裡解壓縮檔案freelut

解壓縮後放置桌面，並將檔案複製改名，接著開啟GLUT project 

#include <GL/glut.h>

void display()

{

glutSolidTeapot( 0.3 );

glutSwapBuffers();

}

int main(int argc, char *argv[])

{ 

    glutInit(&argc, argv); 

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes"); 

    glutDisplayFunc(display); 

    glutMainLoop(); 

}

複製week02茶杯的程式

加入2行新的程式

#include <GL/glut.h>

void display()

{

glPushMatrix(); 備份矩陣

        glTranslatef(0.5,0,0);

        glutSolidTeapot( 0.3 );

        glPopMatrix(); 還原矩陣

glutSwapBuffers();

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutMainLoop();

}

顯示點擊的座標

#include <GL/glut.h>

void display()

{

glPushMatrix();

        glTranslatef(0.5,0,0);

        glutSolidTeapot( 0.3 );

    glPopMatrix();

glutSwapBuffers();

}

#include <stdio.h>

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

{

    printf("%d %d %d %d\n",button,state,x,y);

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

}

讓茶壺跟著鼠標走

#include <GL/glut.h>

float X=0 ,Y=0;

void display()

{

glClear(GL_COLOR_BUFFER_BIT |GL_COLOR_BUFFER_BIT  ); 清背景

glPushMatrix();

        glTranslatef(X,Y,0);

        glutSolidTeapot( 0.3 );

        glPopMatrix();

glutSwapBuffers();

}

#include <stdio.h>

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

{

    X=(x-150)/150.0;

    Y=-(y-150)/150.0; 口訣:減一半，除一半，y負號

}

int main(int argc, char *argv[])

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("GLUT Shapes");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

}

用鼠標幫你畫圖

#include <GL/glut.h>

#include <stdio.h>

void display()

{

    glBegin(GL_POLYGON);

    glVertex2f(-0.268, 0.160);

    glVertex2f(-0.304, 0.204);

    glVertex2f(-0.332, 0.264);

    glVertex2f(-0.352, 0.384);

    glVertex2f(-0.344, 0.484);

    glVertex2f(-0.308, 0.532);

    glVertex2f(-0.236, 0.552);

    glVertex2f(-0.204, 0.496);

    glVertex2f(-0.204, 0.404);

    glVertex2f(-0.204, 0.348);

    glVertex2f(-0.180, 0.280);

    glVertex2f(-0.156, 0.228);

    glVertex2f(-0.156, 0.212);

    glVertex2f(-0.152, 0.188);

    glEnd();

    glBegin(GL_POLYGON);

    glVertex2f(0.040, 0.200);

    glVertex2f(0.032, 0.248);

    glVertex2f(0.028, 0.328);

    glVertex2f(0.028, 0.404);

    glVertex2f(0.040, 0.480);

    glVertex2f(0.064, 0.540);

    glVertex2f(0.096, 0.572);

    glVertex2f(0.152, 0.616);

    glVertex2f(0.208, 0.604);

    glVertex2f(0.260, 0.524);

    glVertex2f(0.240, 0.468);

    glVertex2f(0.192, 0.428);

    glVertex2f(0.164, 0.384);

    glVertex2f(0.152, 0.328);

    glVertex2f(0.148, 0.276);

    glVertex2f(0.148, 0.244);

    glVertex2f(0.140, 0.212);

    glVertex2f(0.140, 0.188);

    glEnd();

    glBegin(GL_POLYGON);

    glVertex2f(-0.196, 0.044);

    glVertex2f(-0.188, 0.068);

    glVertex2f(-0.112, 0.096);

    glVertex2f(-0.060, 0.096);

    glVertex2f(-0.048, 0.068);

    glVertex2f(-0.088, 0.048);

    glVertex2f(-0.140, 0.032);

    glVertex2f(-0.188, 0.032);

    glEnd();

    glBegin(GL_LINE_LOOP);

    glVertex2f(-0.212, 0.152);

    glVertex2f(-0.256, 0.116);

    glVertex2f(-0.272, 0.064);

    glVertex2f(-0.300, -0.084);

    glVertex2f(-0.292, -0.140);

    glVertex2f(-0.220, -0.224);

    glVertex2f(-0.124, -0.252);

    glVertex2f(0.080, -0.260);

    glVertex2f(0.156, -0.256);

    glVertex2f(0.224, -0.224);

    glVertex2f(0.264, -0.160);

    glVertex2f(0.288, -0.152);

    glVertex2f(0.284, 0.004);

    glVertex2f(0.256, 0.092);

    glVertex2f(0.232, 0.164);

    glVertex2f(0.068, 0.180);

    glVertex2f(0.000, 0.192);

    glVertex2f(-0.144, 0.176);

    glEnd();

    glutSwapBuffers();

}

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

{

    float X = (x-250)/250.0;

    float Y = -(y-250)/250.0;

    if(state==GLUT_DOWN){

        printf("    glVertex2f(%.3f, %.3f);\n", X, Y);

    }

}

int main(int argc, char* argv[] )

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_RGB|GLUT_DOUBLE|GLUT_DEPTH);

    glutInitWindowSize(500,500);

    glutCreateWindow("week03");

    glutDisplayFunc(display);

    glutMouseFunc(mouse);

    glutMainLoop();

}