18 lines
439 B
JavaScript
18 lines
439 B
JavaScript
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module.exports = transformMat3
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/**
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* Transforms the vec2 with a mat3
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* 3rd vector component is implicitly '1'
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*
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* @param {vec2} out the receiving vector
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* @param {vec2} a the vector to transform
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* @param {mat3} m matrix to transform with
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* @returns {vec2} out
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*/
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function transformMat3(out, a, m) {
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var x = a[0],
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y = a[1]
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out[0] = m[0] * x + m[3] * y + m[6]
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out[1] = m[1] * x + m[4] * y + m[7]
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return out
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}
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