void rotateQ(mat4 target, quat q) {
normQ(q);
float xx = q[1] * q[1];
float yy = q[2] * q[2];
float zz = q[3] * q[3];
float xy = q[1] * q[2];
float xz = q[1] * q[3];
float wx = q[0] * q[1];
float wy = q[0] * q[2];
float wz = q[0] * q[3];
float yz = q[2] * q[3];
/* again, transposed */
float data[] = {
1 - 2.0f * (yy + zz), 2.0f * (xy + wz), 2.0f * (xz - wy), 0,
2.0f * (xy - wz), 1 - 2.0f * (xx + zz), 2.0f * (yz + wx), 0,
2.0f * (xz + wy), 2.0f * (yz - wx), 1 - 2.0f * (xx + yy), 0,
0, 0, 0, 1
};
_setData(target, data);
}
void translate(mat4 target, float x, float y, float z) {
float data[] = {
1, 0, 0, 0,
0, 1, 0, 0,
0, 0, 1, 0,
x, y, z, 1
};
_setData(target, data);
}
void scale(mat4 target, float x, float y, float z) {
float data[] = {
x, 0, 0, 0,
0, y, 0, 0,
0, 0, z, 0,
0, 0, 0, 1
};
_setData(target, data);
}
// Hadshake response packet (see http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::HandshakeResponse)
static void _requestHandshake(mysql_t *mysql) {
ASSERT(mysql->state == MySQL_Handshake);
_initRequest(mysql, 1);
_setUInt4(&mysql->request, CLIENT_LONG_PASSWORD | CLIENT_PROTOCOL_41 | CLIENT_SECURE_CONNECTION); // capabilities
_setUInt4(&mysql->request, 8192); // maxpacketsize
_setUInt1(&mysql->request, 8); // characterset
_setPadding(&mysql->request, 23); // reserved bytes
if (mysql->port->parameters.mysql.username)
_setData(&mysql->request, mysql->port->parameters.mysql.username, strlen(mysql->port->parameters.mysql.username)); // username
_setPadding(&mysql->request, 1); // NUL
if (mysql->port->parameters.mysql.password) {
_setUInt1(&mysql->request, SHA1_DIGEST_SIZE); // authdatalen
_setData(&mysql->request, _password((char[SHA1_DIGEST_SIZE]){0}, mysql->port->parameters.mysql.password, mysql->response.data.handshake.authdata), SHA1_DIGEST_SIZE); // password
void perspective(mat4 target, float near, float far, float fov, float ratio) {
float z_d = far - near;
float e00 = 1 / tanf(RAD(fov / 2.0f));
float e11 = ratio * e00;
float e22 = -1.0f * (far + near) / z_d;
float e32 = -2.0f * near * far / z_d;
/* already transposed to column-major */
float data[] = {
e00, 0, 0, 0,
0, e11, 0, 0,
0, 0, e22, -1.0f,
0, 0, e32, 0
};
_setData(target, data);
}
void perspectiveInf(mat4 target, float near, float fov, float ratio) {
/* here, e22 and e32 are derived from taking the
* limit of original e22 and e32 to infinity */
float e00 = 1 / tanf(RAD(fov / 2.0f));
float e11 = ratio * e00;
float e22 = -1.0f;
float e32 = -2.0f * near;
/* already transposed to column-major */
float data[] = {
e00, 0, 0, 0,
0, e11, 0, 0,
0, 0, e22, -1.0f,
0, 0, e32, 0
};
_setData(target, data);
}
