• Python 3.9.18
• glfw 2.6.2
• Pillow 10.0.1
• PyOpenGL 3.1.7
• PyOpenGL-accelerate 3.1.7

1. Load an image file from disk (simpson.png) and create and display a window the same size as the original resolution.
2. Select a rectangular area with the mouse in the displayed window to specify the area to be saved.
3. Press the Spacebar key and save only the selected area of the image as a new image file on the disk (simpson.png_cropped.png).

1. Create an OpenGL window with a resolution of 512x512
2. Select 3 points (pixels) within the window by clicking on them, corresponding to the vertices of the triangle.
3. Once the 3rd point is selected, a triangle is drawn, with the 1st vertex assigned the color red, the 2nd green, and the 3rd blue.
4. For every pixel in the window, a calculation is performed using the barycentric coordinate to determine whether the point is inside or outside the triangle.
5. Be sure to use dot product and cross product for the calculation.
6. Based on the calculation result, the inside pixels are painted with the interpolated color of the vertex, and the outside pixels are assigned black.
7. Each pixel must be drawn using the glPoints() function, not glPolygons(), glTriangles(), etc.

Write an OpenGL program to load the attached OBJ data file and create a carousel.

1. Press the down key on the keyboard to perform the corresponding motion.

• l : local motion (local motion)
• g : Global Motion * The default rotor object for Global Motion is Athena.obj.
• r: relative motion

2. Pressing the down key on the keyboard will perform the function immediately.

• w: wireframe
• p: polygon
• i: initialization
• q: quit

3. Use the attached OBJ graphical models (Athena.obj Bunny.obj Dragon.obj) to test your program.