WEEK_05_01370984

Week_05

Class Work_01

Download three files (windows, data, glut.dll) and open Transformation.exe, right click and choose (Swap translate/rotate).

• Translatef : Axis be a center to do rotation.
• Rotatef : Model be a center to do rotation.

Class Work_02



Source Code:

#include <GL/glut.h>

float rotX=0;

void display()

{

    glClearColor(0,0,1,1);

    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix();

        glRotatef(rotX, 0,1,0);

        glColor3f(1,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void motion(int x, int y)

{

    rotX = x;

    display();

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("01370984");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMainLoop();

}

Class Work_03

What is Buffer?

A buffer is a data area shared by hardware devices or program processes that operate at different speeds or with different sets of priorities. The buffer allows each device or process to operate without being held up by the other.

What is Double Buffer?

     
 Push : Put data into memory
 Pop : Take out data from the memory

What is Matrix?

 It is useful to be able to save the current transformation. 

Class Work_04



Source Code:

#include <GL/glut.h>

float rotX=0, rotY=0;

void display()

{

    glClearColor(0,0,1,1);

    glClear(GL_COLOR_BUFFER_BIT);

    glPushMatrix();

        glRotatef(rotX, 0,1,0);  /// rotX is Rotation angle

        glRotatef(rotY, 1,0,0);  /// rotY is Rotation angle

        glColor3f(1,1,0);

        glutSolidTeapot(0.3);

    glPopMatrix();

    glutSwapBuffers();

}

void motion(int x, int y)

{

    rotX = x;

    rotY = y;

    display();

}

int main(int argc, char**argv)

{

    glutInit(&argc, argv);

    glutInitDisplayMode(GLUT_DOUBLE | GLUT_DEPTH);

    glutCreateWindow("01370984");

    glutDisplayFunc(display);

    glutMotionFunc(motion);

    glutMainLoop();

}