📘 computer graphics

1. **Problem Statement:** Implement the Digital Differential Analyzer (DDA) algorithm to draw a line between two points in a coordinate system. 2. **DDA Algorithm Formula:** The DD

1. **Reflect the polygon against the x-axis** with points (4,6), (8,16), (4,10), (8,20). Reflection about the x-axis changes a point $(x,y)$ to $(x,-y)$.

1. The problem states the candidate pixel update formula: $$p_{k+1} = p_k + 2\Delta y - 2\Delta x$$ given that $$y_{k+1} - y_k = 1$$. 2. This formula is typically used in line draw

1. **Problem Statement:** We need to prove the expression for the current pixel decision parameter in Bresenham's Line Drawing Algorithm: