Description
1. Write down a Python program to draw a transformed triangle in a 2D space. A. Set the window title to your student ID and the window size to (480,480). B. Complete the render() function below to draw a triangle in the manner described in C. i. You have to use OpenGL transformation functions. Do not use numpy matrix multiplication for composing transformations. + 2021_ITE0000_2019000001 + LabAssignment4/ + 1/ – 1.py + 2/ – 2.py + 3/ – 3.py C. If you press or repeat a key, the triangle should be transformed as shown in the Table: Key Transformation Q Translate by -0.1 in x direction E Translate by 0.1 in x direction A Rotate by 10 degrees counterclockwise D Rotate by 10 degrees clockwise 1 Reset the triangle with identity matrix D. 7UDQVIRUPDWLRQVVKRXOGEHDFFXPXODWHGFRPSRVHGZLWKSUHYLRXVRQHXQOHVV\RXSUHVVěĜ i. You may need a global variable (like a python list object) to store key inputs. E. Files to submit: A Python source file (Name the file whatever you want (in English). Extension should be .py) F. Expected result: def render(): glClear(GL_COLOR_BUFFER_BIT) glLoadIdentity() # draw cooridnates 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() glColor3ub(255, 255, 255) ########################### # implement here ########################### drawTriangle() def drawTriangle(): glBegin(GL_TRIANGLES) glVertex2fv(np.array([0.,.5])) glVertex2fv(np.array([0.,0.])) glVertex2fv(np.array([.5,0.])) glEnd() 2. Write down a Python program to draw rotating point p1=(0.5, 0), p2=(0, 0.5) and vector v1=(0.5, 0), v2=(0, 0.5) in a 2D space. A. Set the window title to your student ID and the window size to (480,480). B. Use the following render() and fill “# your implementation” parts to render p1,p2 and v1,v2. i. Hint: Render the vector v1, v2 as a line segment starting from the origin (0,0). ii. Hint2: You need different translation matrix for p1 and p2 to render them correctly. When starts E*4 A *3 Q*6 D *2 1 C. Expected result: Uploaded LabAssignment4-2.mp4 i. Do not mind the initial angle. D. p1,p2 and v1,v2 should be -t rad rotated when t seconds have elapsed since the program was executed. E. You need to somehow combine a rotation matrix and a translation matrix to produce the expected result. F. Files to submit: A Python source file (Name the file whatever you want (in English). Extension should be .py) def render(th): 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() glColor3ub(255, 255, 255) # calculate matrix M1, M2 using th # your implementation # draw point p glBegin(GL_POINTS) # your implementation glEnd() # draw vector v glBegin(GL_LINES) # your implementation glEnd() ‘
