Thread: orientation from velocity

I'm working on how to make a missile model point the way it's moving. I define the position with a vector and the velocity as a normalized vector that I scale for speed and time. The method that I use to extract the velocity is:

Code:

Missile(float _speed, float _yaw, float _pitch, Vec _pos) {
	name = "Missile";
	speed = _speed;
	pos = _pos;
	yaw = _yaw;
	pitch = _pitch;
	vel.set(cosf(yaw),sinf(pitch),sinf(yaw));
	vel.normalize();
	totalTime = 10.0f;
	modelName = "missile.ms3d";
}

The line that moves the missile, which works correctly, is:

Code:

pos += vel * (dtimef * speed);

Since this works, I know that the velocity vector is at least pointing in the right direction. The problem comes up when I try to render the missile:

Code:

glPushMatrix();
glTranslatef(pos.x,pos.y,pos.z);
glRotatef(yaw*58.6319f,0.0f,1.0f,0.0f);
glRotatef(pitch*58.6319f,1.0f,0.0f,0.0f);
//render the model
glPopMatrix();

The 58.6319f's are in there to convert yaw and pitch from radians to degrees, so I think that should be working, except the model points in weird directions. What am I doing wrong?