Algorithm of DDA
Write down the algorithm of DDA (Digital differential analyzer) scan conversion algorithm?
Expert
Algorithm:
Step 1: Input the line end-points and store the left end-point in (x1, y1) and right end-point in (x2, y2).
Step 2: Compute the values of Δx and Δy by using Δx = xb – xa, Δy = yb – ya
Step 3: When the values of Δx > Δy then assign values of steps as Δx or else the values of steps as Δy.
Step 4: Compute the values of X increment and Y increment and assign the value x= xa and y = ya.
Step 5: For k = 1 to steps do
X = X + X increment Y= Y + Y increment
Putpixel(ceil(x), ceil(y),15)
Step 6: End
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