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I'm casting a glm type to an normal array using glm::value_ptr() as follows

glm::vec4 position;
glm::mat3 orient;

...

glm::mat4 transformMatrix=glm::translate( glm::mat4(orient) , glm::vec3(position));
float *p=glm::value_ptr(transformMatrix);

However I'm getting this compile error: 

error: invalid cast from type 'const glm::detail::tvec3<float>' to type 'float'|

Any help?

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The first value_ptr of a glm::matN is a glm::vecN, e.g. the matrix consists of N glm::vecN. So, value pointer gets you the first vector in the matrix. To get the first element of the matrix, you'll have to get the first element of the first vector. – sarahm Mar 5 at 9:21

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