如何从glm :: mat4中读取值

Question

我有一个glm :: mat4矩阵，我需要将值转换为double [16]数组。关于如何解决这个问题的任何想法？

Answer 1

glm::mat4 pMat4;  // your matrix

double dArray[16] = {0.0};

const float *pSource = (const float*)glm::value_ptr(pMat4);
for (int i = 0; i < 16; ++i)
    dArray[i] = pSource[i];