week 03 張歆

跟上週一樣將[data][win32] glut32.dll 按右鍵另存連結


將windows解壓縮

把data資料夾、glut32.dll移至windows資料夾內


打開shape


2.
打開codeblocls開GLUT project選freeglut
打出程式再按build and run


#include <GL/glut.h>
void display()
{
    glBegin(GL_POLYGON); //切換頂點跟色彩
        glColor3f(1,1,0) ;//色彩
        glVertex3f(0.5,0.5,0.5); //頂點
        glVertex3f(0.5,-0.5,0.5) ;//頂點
        glVertex3f(0,0,0) ;//頂點
    glEnd(); //切換頂點跟色彩
    glutSwapBuffers();
}
int main(int argc, char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("hello 3D");

    glutDisplayFunc(display);
    glutMainLoop();

}



改背景色

除255.0 



或使用  glColor3ub(r, g, b);




點一下滑鼠及可找出座標

#include <GL/glut.h>
#include <stdio.h>
void mouse (int button, int state, int x, int y)
{
    if(state==GLUT_DOWN)
        printf("        glVertex3f((%d-150)/150.0, -(%d-150)/150.0, 0.0);\n", x, y);
}
void display()
{
    glClearColor(144/255.0, 168/255.0, 56/255.0, 1);
    glClear(GL_COLOR_BUFFER_BIT);
    glBegin(GL_POLYGON);
    glColor3f(192/255.0, 215/255.0, 107/255.0);
    glVertex3f((95-100)/100.0, (49-100)/100.0, 0.0);
    glVertex3f((17-100)/100.0, (106-100)/100.0, 0.0);
    glVertex3f((93-100)/100.0, (165-100)/100.0, 0.0);
    glVertex3f((174-100)/100.0, (103-100)/100.0, 0.0);
    glEnd();
    glutSwapBuffers();
}
int main(int argc,char**argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE|GLUT_DEPTH);
    glutCreateWindow("hello");

    glutDisplayFunc(display);
    glutMouseFunc(mouse);
    glutMainLoop();
}

#include <Gl/glut.h>
#include <stdio.h>
void mouse(int button, int state, int x, int y)
{
    if(state==GLUT_DOWN)
        printf("glVertex3f((%d-150)/150.0, -(%d-150)/150.0, 0.0);\n", x, y);
}
void display()
{
    glClearColor(144/255.0, 168/255.0, 56/255.0, 1);
    glClear(GL_COLOR_BUFFER_BIT);
    glBegin(GL_POLYGON);
        glColor3ub(192, 215, 107);
        glVertex3f((95-100)/100.0,-(49-100)/100.0, 0.0);
        glVertex3f((17-100)/100.0,-(106-100)/100.0, 0.0);
        glVertex3f((93-100)/100.0,-(165-100)/100.0, 0.0);
        glVertex3f((174-100)/100.0,-(103-100)/100.0, 0.0);
    glEnd();
    glBegin(GL_POLYGON);
    glVertex3f((27-150)/150.0, -(234-150)/150.0, 0.0);
    glVertex3f((28-150)/150.0, -(270-150)/150.0, 0.0);
    glVertex3f((92-150)/150.0, -(272-150)/150.0, 0.0);
    glVertex3f((82-150)/150.0, -(241-150)/150.0, 0.0);
    glEnd();

    glutSwapBuffers();
}
int main(int argc, char **argv)
{
    glutInit(&argc,argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);
    glutCreateWindow("hello");
    glutDisplayFunc(display);
    glutMouseFunc(mouse);
    glutMainLoop();
}