// creates a matrix for a quake entity
void Matrix4x4_CreateFromQuakeEntity(matrix4x4_t *out, double x, double y, double z, double pitch, double yaw, double roll, double scale);
// creates a duke3d view matrix for a quake view matrix ;)
-void Matrix4x4_QuakeToDuke3D(const matrix4x4_t *in, matrix4x4_t *out);
+void Matrix4x4_QuakeToDuke3D(const matrix4x4_t *in, matrix4x4_t *out, double maxShearAngle);
// converts a matrix4x4 to a set of 3D vectors for the 3 axial directions, and the translate
void Matrix4x4_ToVectors(const matrix4x4_t *in, vec_t vx[3], vec_t vy[3], vec_t vz[3], vec_t t[3]);