C++ (Cpp) kmQuaternionToAxisAngle示例

示例#1

文件： mat3.c 项目： apophis42/GameEngine

kmVec3* const kmMat3RotationToAxisAngle(kmVec3* pAxis, kmScalar* radians, const kmMat3* pIn)
{
    /*Surely not this easy?*/
    kmQuaternion temp;
    kmQuaternionRotationMatrix(&temp, pIn);
    kmQuaternionToAxisAngle(&temp, pAxis, radians);
    return pAxis;
}

示例#2

文件： mat4.c 项目： izikhuang/kazmath

/**
 * Take the rotation from a 4x4 transformation matrix, and return it as an axis and an angle (in radians)
 * returns the output axis.
 */
kmVec3* kmMat4RotationToAxisAngle(kmVec3* pAxis, kmScalar* radians, const kmMat4* pIn)
{
    /*Surely not this easy?*/
    kmQuaternion temp;
    kmMat3 rotation;
    kmMat4ExtractRotation(&rotation, pIn);
    kmQuaternionRotationMatrix(&temp, &rotation);
    kmQuaternionToAxisAngle(&temp, pAxis, radians);
    return pAxis;
}