19 lines
484 B
JavaScript
19 lines
484 B
JavaScript
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module.exports = transformMat4
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/**
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* Transforms the vec2 with a mat4
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* 3rd vector component is implicitly '0'
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* 4th 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 {mat4} m matrix to transform with
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* @returns {vec2} out
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*/
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function transformMat4(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[4] * y + m[12]
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out[1] = m[1] * x + m[5] * y + m[13]
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return out
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}
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