Function G2API_GiveMeVectorFromMatrix

code/rd-vanilla/G2_API.cpp:1967–2007

given a boltmatrix, return in vec a normalised vector for the axis requested in flags

// given a boltmatrix, return in vec a normalised vector for the axis requested in flags
void G2API_GiveMeVectorFromMatrix(mdxaBone_t &boltMatrix, Eorientations flags, vec3_t &vec)
{
	switch (flags)
	{
	case ORIGIN:
		vec[0] = boltMatrix.matrix[0][3];
		vec[1] = boltMatrix.matrix[1][3];
		vec[2] = boltMatrix.matrix[2][3];
		break;
	case POSITIVE_Y:
		vec[0] = boltMatrix.matrix[0][1];
		vec[1] = boltMatrix.matrix[1][1];
		vec[2] = boltMatrix.matrix[2][1];
 		break;
	case POSITIVE_X:
		vec[0] = boltMatrix.matrix[0][0];
		vec[1] = boltMatrix.matrix[1][0];
		vec[2] = boltMatrix.matrix[2][0];
		break;
	case POSITIVE_Z:
		vec[0] = boltMatrix.matrix[0][2];
		vec[1] = boltMatrix.matrix[1][2];
		vec[2] = boltMatrix.matrix[2][2];
		break;
	case NEGATIVE_Y:
		vec[0] = -boltMatrix.matrix[0][1];
		vec[1] = -boltMatrix.matrix[1][1];
		vec[2] = -boltMatrix.matrix[2][1];
		break;
	case NEGATIVE_X:
		vec[0] = -boltMatrix.matrix[0][0];
		vec[1] = -boltMatrix.matrix[1][0];
		vec[2] = -boltMatrix.matrix[2][0];
		break;
	case NEGATIVE_Z:
		vec[0] = -boltMatrix.matrix[0][2];
		vec[1] = -boltMatrix.matrix[1][2];
		vec[2] = -boltMatrix.matrix[2][2];
		break;
	}
}

// copy a model from one ghoul2 instance to another, and reset the root surface on the new model if need be
// NOTE if modelIndex = -1 then copy all the models