void UmlDesktop::limitsize_move(QWidget * who, QSize & previous,
double max_w, double max_h)
{
if (previous.width() > 0)
who->resize(previous);
else {
int wi = (int)(w * max_w);
int he = (int)(h * max_h);
// warning who->width() or who->height()
// may be greater than the reality
if ((who->width() > wi) || (who->height() > he)) {
previous.setWidth((who->width() > wi) ? wi : who->width());
previous.setHeight((who->height() > he) ? he : who->height());
who->resize(previous);
}
}
if (fixedp)
tocenter(who);
// under Windows the dialog may go out of the screen
else
who->move(QCursor::pos());
}
void UmlDesktop::setsize_center(QWidget * who, QSize & previous,
double pw, double ph)
{
if (previous.width() <= 0) {
previous.setWidth((int)(w * pw));
previous.setHeight((int)(h * ph));
}
who->resize(previous);
if (fixedp)
tocenter(who);
}
void UmlDesktop::limitsize_center(QWidget * who, QSize & previous,
double max_w, double max_h)
{
if (previous.width() > 0)
who->resize(previous);
else {
int wi = (int)(w * max_w);
int he = (int)(h * max_h);
// warning who->width() or who->height()
// may be greater than the reality
if ((who->width() > wi) || (who->height() > he)) {
previous.setWidth((who->width() > wi) ? wi : who->width());
previous.setHeight((who->height() > he) ? he : who->height());
who->resize(previous);
}
}
if (fixedp)
tocenter(who);
}
bool ViewableSphere::QuickIntersectTest(
const VectorR3& viewPos, const VectorR3& viewDir, double maxDist,
double *intersectDistance,
const VectorR3& centerPos, double radiusSq )
{
VectorR3 tocenter(centerPos);
tocenter -= viewPos; // Vector view position to the center
// D = Distance to pt on view line closest to sphere
// v = vector from sphere center to the closest pt on view line
// ASq = the distance from v to sphere center squared
double D = (viewDir^tocenter);
VectorR3 v(viewDir);
v *= D;
v -= tocenter;
double ASq = v.NormSq();
// Ray-line completely misses sphere, or just grazes it.
if ( ASq >= radiusSq ) {
return false;
}
double BSq = radiusSq-ASq;
if ( D>0.0 && D*D>BSq && (D<maxDist || BSq>Square(D-maxDist) ) ) {
// It hits the sphere as it enters.
*intersectDistance = D-sqrt(BSq);
return true;
}
else if ( (D>0.0 || D*D<BSq) && D<maxDist && BSq<Square(D-maxDist) ) {
// it hits the sphere as it exits
*intersectDistance = D+sqrt(BSq);
return true;
}
else {
return false;
}
}
// Returns an intersection if found with distance maxDistance
// viewDir must be a unit vector.
// intersectDistance and visPoint are returned values.
bool ViewableSphere::FindIntersectionNT (
const VectorR3& viewPos, const VectorR3& viewDir, double maxDist,
double *intersectDistance, VisiblePoint& returnedPoint ) const
{
VectorR3 tocenter(Center);
tocenter -= viewPos; // Vector view position to the center
// D = Distance to pt on view line closest to sphere
// v = vector from sphere center to the closest pt on view line
// ASq = the distance from v to sphere center squared
double D = (viewDir^tocenter);
VectorR3 v(viewDir);
v *= D;
v -= tocenter;
double ASq = v.NormSq();
// Ray-line completely misses sphere, or just grazes it.
if ( ASq >= RadiusSq ) {
return false;
}
double BSq = RadiusSq-ASq;
if ( D>0.0 && D*D>BSq &&
(D<maxDist || BSq>Square(D-maxDist) ) ) {
// Return the point where view intersects with the outside of
// the sphere.
*intersectDistance = D-sqrt(BSq);
v = viewDir;
v *= *intersectDistance;
v += viewPos; // Position of intersection
returnedPoint.SetPosition( v );
v -= Center;
v /= Radius; // Normalize: normal out from intersection pt
v.ReNormalize();
returnedPoint.SetNormal( v );
returnedPoint.SetMaterial ( *OuterMaterial );
returnedPoint.SetFrontFace(); // Front face direction
CalcUV( v, &(returnedPoint.GetUV()) );
returnedPoint.SetFaceNumber( 0 );
return true;
}
else if ( (D>0.0 || D*D<BSq) && D<maxDist && BSq<Square(D-maxDist) ) {
// return the point where view exits the sphere
*intersectDistance = D+sqrt(BSq);
v = viewDir;
v *= *intersectDistance;
v += viewPos;
returnedPoint.SetPosition( v );
v -= Center;
v /= Radius; // Normalize, but still points outward
v.ReNormalize(); // Just in case
returnedPoint.SetNormal( v );
returnedPoint.SetMaterial ( *InnerMaterial );
returnedPoint.SetBackFace();
CalcUV( v, &(returnedPoint.GetUV()) );
return true;
}
else {
return false;
}
}
