[Solved] Computer Graphics- Lab Assignment 3

+ 2020_ITE0000_2019000001

+ LabAssignment2/

+ 1/

• py

+ 2/

• py

+ 3/

• py

• The submission time is determined not when the commit is made but when the git push is made.

1. Write down a Python program to draw a rotating triangle.
2. Set the window title to your student ID and the window size to (480,480).
3. Draw a triangle using render() function below (DO NOT modify it!).

def render(T):

glClear(GL_COLOR_BUFFER_BIT) glLoadIdentity() # draw cooridnate glBegin(GL_LINES) glColor3ub(255, 0, 0) glVertex2fv(np.array([0.,0.])) glVertex2fv(np.array([1.,0.])) glColor3ub(0, 255, 0) glVertex2fv(np.array([0.,0.])) glVertex2fv(np.array([0.,1.]))

glEnd()

# draw triangle glBegin(GL_TRIANGLES)

glColor3ub(255, 255, 255)

glVertex2fv( (T @ np.array([.0,.5,1.]))[:-1] ) glVertex2fv( (T @ np.array([.0,.0,1.]))[:-1] ) glVertex2fv( (T @ np.array([.5,.0,1.]))[:-1] ) glEnd()

1. Expected result: Uploaded LabAssignment3-1.mp4

Key	Transformation
W	Scale by 0.9 times in x direction
E	Scale by 1.1 times in x direction
S	Rotate by 10 degrees counterclockwise
D	Rotate by 10 degrees clockwise
X	Shear by a factor of -0.1 in x direction

1. Do not mind the initial angle of the triangle.
2. The triangle should be t rad rotated when t seconds have elapsed since the program was executed.
3. You need to somehow combine a rotation matrix and a translation matrix to produce the expected result.
4. Files to submit: A Python source file (Name the file whatever you want (in English). Extension should be .py)

2. Write down a Python program to draw a transformed triangle.
3. Set the window title to your student ID and the window size to (480,480).
4. Draw a triangle using render() function of prob 1 (DO NOT modify it!).
5. If you press or repeat a key, the triangle should be transformed as shown in the Table:

C	Shear by a factor of 0.1 in x direction
R	Reflection across x axis
1	Reset the triangle with identity matrix

1. Transformations should be accumulated (composed with previous one) unless you press 1.
2. Be sure: gComposedM = newM @ gComposedM
3. Youll need to make gComposedM as a global variable.
4. Files to submit: A Python source file (Name the file whatever you want (in English).

Extension should be .py)