Point Clipping Quiz

What is the first step in the Point Clipping algorithm?

• Perform OR operation

• Assign region codes

• Define the Clipping Region

• Check Conditions

Which condition checks if a point (x,y) is inside the clipping region?

• x_min ≤ x ≤ x_max

• x_max ≤ x ≤ x_min

• y_min ≤ y ≤ y_max

• y_max ≤ y ≤ y_min

What does an OR operation result of 0000 indicate?

• The line is outside the window

• The line is completely visible

• The line is invisible

• The line is partially inside

What is the formula for calculating the slope (m) of a line?

• m = (y1 - y2) / (x1 - x2)

• m = (y2 - y1) / (x2 - x1)

• m = (x2 - x1) / (y2 - y1)

• m = (y1 + y2) / (x1 + x2)

What happens if the AND operation results in 0000?

• The line is completely visible

• The line is invisible

• The line is partially inside

• The line is outside the window

In the given problem setup, what are the coordinates of the clipping window's top boundary?

• (8, 1)

• (1, 1)

• (8, 6)

• (1, 6)

After clipping against the left edge, which vertex was added due to intersection?

• (1, 4.67)

• (4, 8)

• (1, 4)

• (2, 2)

What is the final polygon after clipping against the top edge?

• [(2, 2), (4, 8), (1, 4.67), (8, 2), (6, 5)]

• [(2, 2), (3.67, 6), (1, 4.67), (8, 2), (6, 5)]

• [(1, 4.67), (8, 2), (6, 5)]

• [(2, 2), (3.67, 6), (8, 2), (6, 5)]

What is the value of xmin in the given clipping window?

• 8

• 50

• 10

• 1

Which algorithm is used for clipping lines in the second question?

• Bresenham's Line Algorithm

• Midpoint Line Algorithm

• Cohen-Sutherland Algorithm

• Sutherland-Hodgman Algorithm