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Given the triangle T = (P1, P2, P3) with P1 = (-2, -1, 1), P2 = (2, 1,-1), and P3 = (3, 0, -4) and with texture (s, t) coordinates at the vertices defined as (0.25, 1.0), (0.8, 0.8), and (0.6, 1.0) respectively

Compute the texture coordinate (s) for P with x and y coordinates = (0.5, 0.5). Use the standard barycentric coordinate formula with beta = 5/6.

The main thing that i'm confused about is how to convert to barycentric coordinates. Any help?

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Unsurprisingly, Wikipedia is your friend. In the future, please check sources like Wikipedia for readily available answers before posting a question.

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