Question 11896 – Computer-Graphics

In Cyrus-Beck algorithm for line clipping the value of t parameter is computed by the relation :

(Here P₁ and P₂ are the two end points of the line, f is a point on the boundary, n₁ is inner normal)

Correct Answer: B

(P₁ – f_i) × n_i / (P₂ – P₁) × n_i

(f_i – P₁) × n_i / (P₂ – P₁) × n_i

(P₂ – f_i) × n_i / (P₁ – P₂) × n_i

(f_i – P₂) × n_i / (P₁ – P₂) × n_i

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