float Line2d::getDistanceTo(const Vector2d &point, Vector2d *intersection) const {
float dist = fabsf(_a * point.getX() + _b * point.getY() + _c) / sqrt(_a * _a + _b * _b);
if (intersection) {
intersectsLine(getPerpendicular(point), intersection);
}
return dist;
}
void Planet::calculateNetAcceleration(QuadTreeNodeData * mOtherPlanet)
{
atlas::math::Vector r = (mPosition - mOtherPlanet->centerOfMass);
atlas::math::Vector mNormalRadius = getNormal(r);
atlas::math::Vector mPerpendicular = getPerpendicular(mNormalRadius);
float rModulus = getModulus(r);
if (rModulus <= 0.05f)
return;
thetadotdot -= (2.0f * (mAngVelocity * getModulus(mRadialVelocity)) / rModulus);
rdotdot += mAngVelocity * mAngVelocity * rModulus - ((G * mOtherPlanet->totalMass) / (rModulus * rModulus));
mRadialResultant += mNormalRadius;
mTangenResultant += mPerpendicular * rModulus;
}
// this method is deprecated in 006 use getPerpendicular
ofxVec2f ofxPoint2f::perpendicular( const ofxPoint2f& pnt ) const{
return getPerpendicular(pnt);
}
/**
* Normalized perpendicular.
*/
ofxVec3f ofxVec3f::perpendiculared( const ofxVec3f& vec ) const {
return getPerpendicular(vec);
}