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/*=====================================================================
FUNCTION :
----------
Class Graphic2d_Ellips
TEST :
------
Voir TestG2D/TestG21
NOTES:
----------
HISTORY OF MODIFICATIONS :
--------------------------------
27-01-98 : GG ; OPTIMISATION LOADER
Transform global static variables into static locals.
=====================================================================*/
#define G002 //Add new DrawElement(), DrawVertex() methods
#define VERTEXMARKER 2
#define DEFAULTMARKERSIZE 3.0
#include <Graphic2d_Ellips.ixx>
#include <TShort_Array1OfShortReal.hxx>
#define MAXPOINTS 1023
Graphic2d_Ellips::Graphic2d_Ellips
(const Handle(Graphic2d_GraphicObject)& aGraphicObject,
const Quantity_Length X,
const Quantity_Length Y,
const Quantity_Length MajorRadius,
const Quantity_Length MinorRadius,
const Quantity_PlaneAngle anAngle)
: Graphic2d_Line(aGraphicObject) {
myX = Standard_ShortReal(X);
myY = Standard_ShortReal(Y);
myMajorRadius = Standard_ShortReal(MajorRadius);
myMinorRadius = Standard_ShortReal(MinorRadius);
if (myMajorRadius <= RealEpsilon ())
Graphic2d_EllipsDefinitionError::Raise ("The major radius = 0.");
if (myMinorRadius <= RealEpsilon ())
Graphic2d_EllipsDefinitionError::Raise ("The minor radius = 0.");
myAngle =Standard_ShortReal(anAngle);
// Case of horizontal ellipse
if (Abs (anAngle) <= RealEpsilon ()) {
myMinX = myX - myMajorRadius;
myMaxX = myX + myMajorRadius;
myMinY = myY - myMinorRadius;
myMaxY = myY + myMinorRadius;
}
else {
Standard_ShortReal X1, Y1, X2, Y2;
Standard_Integer nbpoints = 360; // fobenselitmiter
Standard_ShortReal teta = Standard_ShortReal(2 * Standard_PI / nbpoints);
Standard_ShortReal x1 = Standard_ShortReal(myMajorRadius * Cos (myAngle));
Standard_ShortReal y1 = Standard_ShortReal(myMajorRadius * Sin (myAngle));
Standard_ShortReal x2, y2;
Standard_ShortReal costeta = Standard_ShortReal(Cos(teta));
Standard_ShortReal sinteta = Standard_ShortReal(Sin(teta));
x2 = Standard_ShortReal(myMajorRadius * costeta * Cos (myAngle) -
myMinorRadius * sinteta * Sin (myAngle));
y2 = Standard_ShortReal(myMajorRadius * costeta * Sin (myAngle) +
myMinorRadius * sinteta * Cos (myAngle));
X1 = myX + x1; Y1 = myY + y1;
X2 = myX + x2; Y2 = myY + y2;
myMinX = ( X1 < X2 ? X1 : X2 );
myMaxX = ( X1 < X2 ? X2 : X1 );
myMinY = ( Y1 < Y2 ? Y1 : Y2 );
myMaxY = ( Y1 < Y2 ? Y2 : Y1 );
nbpoints++;
for (Standard_Integer i=3; i<= nbpoints; i++) {
X2 = 2*x2*costeta - x1;
Y2 = 2*y2*costeta - y1;
x1 = x2; y1 = y2; x2 = X2; y2 = Y2;
X2 += myX; Y2 += myY;
myMinX = ( myMinX < X2 ? myMinX : X2 );
myMaxX = ( myMaxX < X2 ? X2 : myMaxX );
myMinY = ( myMinY < Y2 ? myMinY : Y2 );
myMaxY = ( myMaxY < Y2 ? Y2 : myMaxY );
}
}
myNumOfElem = 4;
myNumOfVert = 1;
}
void Graphic2d_Ellips::Draw (const Handle(Graphic2d_Drawer)& aDrawer) {
Standard_Boolean IsIn = Standard_False;
if (! myGOPtr->IsTransformed ())
IsIn = aDrawer->IsIn (myMinX,myMaxX,myMinY,myMaxY);
else {
Standard_ShortReal minx, miny, maxx, maxy;
MinMax(minx,maxx,miny,maxy);
IsIn = aDrawer->IsIn (minx,maxx,miny,maxy);
}
if (IsIn) {
static TShort_Array1OfShortReal Xpoint(1,MAXPOINTS+1);
static TShort_Array1OfShortReal Ypoint(1,MAXPOINTS+1);
DrawLineAttrib(aDrawer);
Standard_ShortReal Def;
Standard_ShortReal Coeff;
Aspect_TypeOfDeflection Type;
aDrawer->DrawPrecision(Def,Coeff,Type);
if (Type == Aspect_TOD_RELATIVE) Def = myMajorRadius * Coeff;
Standard_Real val;
if(myMajorRadius > Def)
val = Max( 0.0044 , Min (0.7854 , 2. * ACos(1.-Def/myMajorRadius)));
else
val = 0.7854; // = PI/4.
Standard_Integer nbpoints = Min(MAXPOINTS,Standard_Integer(2*Standard_PI/val)+2);
// Standard_Integer nbpoints = Max ( 8 ,Standard_Integer ( myMajorRadius / Def));
Standard_ShortReal teta = Standard_ShortReal(2*Standard_PI /nbpoints);
Standard_ShortReal x1 = Standard_ShortReal(myMajorRadius *Cos (myAngle)),
y1 = Standard_ShortReal(myMajorRadius *Sin (myAngle));
Standard_ShortReal x2,y2;
Standard_ShortReal cosin = Standard_ShortReal(Cos(teta));
x2 = Standard_ShortReal(myMajorRadius * Cos(teta) * Cos(myAngle) -
myMinorRadius * Sin(teta) * Sin(myAngle));
y2 = Standard_ShortReal(myMajorRadius * Cos(teta) * Sin(myAngle) +
myMinorRadius * Sin(teta) * Cos(myAngle));
Xpoint(1) = myX + x1; Ypoint(1) = myY + y1;
Xpoint(2) = myX + x2; Ypoint(2) = myY + y2;
nbpoints++;
for (Standard_Integer i=3; i<= nbpoints; i++) {
Xpoint(i) = 2*x2*cosin - x1;
Ypoint(i) = 2*y2*cosin - y1;
x1 = x2; y1 = y2; x2 = Xpoint(i); y2 = Ypoint(i);
Xpoint(i) += myX; Ypoint(i) += myY;
}
if ( myGOPtr->IsTransformed() ) {
gp_GTrsf2d aTrsf = myGOPtr->Transform ();
Standard_Real A, B;
for (Standard_Integer j=1; j<= nbpoints; j++) {
A = Standard_Real (Xpoint(j));
B = Standard_Real (Ypoint(j));
aTrsf.Transforms (A, B);
Xpoint(j) = Standard_ShortReal (A);
Ypoint(j) = Standard_ShortReal (B);
}
}
if (myTypeOfPolygonFilling == Graphic2d_TOPF_EMPTY) {
aDrawer->MapPolylineFromTo(Xpoint,Ypoint,nbpoints);
} else {
aDrawer->MapPolygonFromTo(Xpoint,Ypoint,nbpoints);
}
}
}
#ifdef G002
void Graphic2d_Ellips::DrawElement( const Handle(Graphic2d_Drawer)& aDrawer,
const Standard_Integer anIndex) {
Standard_Boolean IsIn = Standard_False;
if (! myGOPtr->IsTransformed ())
IsIn = aDrawer->IsIn (myMinX,myMaxX,myMinY,myMaxY);
else {
Standard_ShortReal minx, miny, maxx, maxy;
MinMax(minx,maxx,miny,maxy);
IsIn = aDrawer->IsIn (minx,maxx,miny,maxy);
}
if (IsIn) {
if ( anIndex > 0 && anIndex < 5 ) {
DrawLineAttrib(aDrawer);
Standard_ShortReal Xp=0., Yp=0.;
Standard_ShortReal tSin = Standard_ShortReal(Sin(myAngle)),
tCos = Standard_ShortReal(Cos(myAngle));
if ( anIndex == 1 ) {
Xp = myX - myMinorRadius * tSin;
Yp = myY + myMinorRadius * tCos;
} else if ( anIndex == 2 ) {
Xp = myX + myMajorRadius * tCos;
Yp = myY + myMajorRadius * tSin;
} else if ( anIndex == 3 ) {
Xp = myX - myMajorRadius * tCos;
Yp = myY - myMajorRadius * tSin;
} else if ( anIndex == 4 ) {
Xp = myX + myMinorRadius * tSin;
Yp = myY - myMinorRadius * tCos;
}
Standard_Real A, B, C, D;
Standard_ShortReal a = myX, b = myY, c = Xp, d = Yp;
if ( myGOPtr->IsTransformed() ) {
gp_GTrsf2d aTrsf = myGOPtr->Transform ();
A = Standard_Real(a);
B = Standard_Real(b);
C = Standard_Real(c);
D = Standard_Real(d);
aTrsf.Transforms (A, B);
aTrsf.Transforms (C, D);
a = Standard_ShortReal(A);
b = Standard_ShortReal(B);
c = Standard_ShortReal(C);
d = Standard_ShortReal(D);
}
aDrawer->MapSegmentFromTo( a, b, c, d );
}
} // end if IsIn
}
void Graphic2d_Ellips::DrawVertex( const Handle(Graphic2d_Drawer)& aDrawer,
const Standard_Integer anIndex) {
Standard_Boolean IsIn = Standard_False;
if ( ! myGOPtr->IsTransformed() )
IsIn = aDrawer->IsIn( myMinX, myMaxX, myMinY, myMaxY );
else {
Standard_ShortReal minx, miny, maxx, maxy;
MinMax( minx, maxx, miny, maxy );
IsIn = aDrawer->IsIn( minx, maxx, miny, maxy );
}
if ( IsIn ) {
if ( anIndex == 1 ) {
Standard_ShortReal X,Y;
DrawMarkerAttrib( aDrawer );
if ( myGOPtr->IsTransformed() ) {
gp_GTrsf2d aTrsf = myGOPtr->Transform ();
Standard_Real A, B;
A = Standard_Real( myX );
B = Standard_Real( myY );
aTrsf.Transforms (A, B);
X = Standard_ShortReal( A );
Y = Standard_ShortReal( B );
} else {
X = Standard_ShortReal( myX );
Y = Standard_ShortReal( myY );
}
aDrawer->MapMarkerFromTo( VERTEXMARKER, X, Y,
DEFAULTMARKERSIZE,DEFAULTMARKERSIZE, 0.0 );
}
} // end if IsIn is true
}
#endif
Standard_Boolean Graphic2d_Ellips::Pick (const Standard_ShortReal X,
const Standard_ShortReal Y,
const Standard_ShortReal aPrecision,
const Handle(Graphic2d_Drawer)& /*aDrawer*/) {
Standard_ShortReal SRX = X, SRY = Y;
Standard_ShortReal maxRadius =
(myMinorRadius < myMajorRadius ? myMajorRadius : myMinorRadius);
Standard_Boolean found = Standard_False;
if ( IsInMinMax (X, Y, aPrecision) ) {
if ( myGOPtr->IsTransformed() ) {
gp_GTrsf2d aTrsf = (myGOPtr->Transform ()).Inverted ();
Standard_Real RX = Standard_Real (SRX), RY = Standard_Real (SRY);
aTrsf.Transforms (RX, RY);
SRX = Standard_ShortReal (RX); SRY = Standard_ShortReal (RY);
}
#ifdef G002
if ( Graphic2d_Primitive::IsOn( SRX, SRY, myX, myY, aPrecision) ) {
SetPickedIndex(-1);
found = Standard_True;
} else {
Standard_ShortReal tSin = Standard_ShortReal(Sin(myAngle)),
tCos = Standard_ShortReal(Cos(myAngle));
Standard_ShortReal Xp = myX - myMinorRadius * tSin,
Yp = myY + myMinorRadius * tCos;
if ( IsOn( SRX, SRY, myX, myY, Xp, Yp, aPrecision) ) {
SetPickedIndex(1);
return Standard_True;
} else {
Xp = myX + myMajorRadius * tCos;
Yp = myY + myMajorRadius * tSin;
if ( IsOn( SRX, SRY, myX, myY, Xp, Yp, aPrecision) ) {
SetPickedIndex(2);
return Standard_True;
} else {
Xp = myX - myMajorRadius * tCos;
Yp = myY - myMajorRadius * tSin;
if ( IsOn( SRX, SRY, myX, myY, Xp, Yp, aPrecision) ) {
SetPickedIndex(3);
return Standard_True;
} else {
Xp = myX + myMinorRadius * tSin,
Yp = myY - myMinorRadius * tCos;
if ( IsOn( SRX, SRY, myX, myY, Xp, Yp, aPrecision) ) {
SetPickedIndex(4);
return Standard_True;
}
}
}
}
Standard_ShortReal xf1,yf1,xf2,yf2; //Sources.
Standard_ShortReal q =
Standard_ShortReal(Sqrt( Abs( myMajorRadius*myMajorRadius - myMinorRadius*myMinorRadius) ));
Standard_ShortReal cos = Standard_ShortReal(Cos(myAngle));
Standard_ShortReal sin = Standard_ShortReal(Sin(myAngle));
// Focus 1 and 2 calculated for the ellipse with centre
// at the origin of mark(0,0)
xf1 = q*cos;
yf1 = q*sin;
xf2 = -q*cos;
yf2 = -q*sin;
Xp = SRX - myX; Yp = SRY - myY;
Standard_ShortReal d1,d2;
d1 = Standard_ShortReal(Sqrt( (xf1 - Xp) * (xf1 - Xp) + (yf1 - Yp) * (yf1 - Yp)));
d2 = Standard_ShortReal(Sqrt( (xf2 - Xp) * (xf2 - Xp) + (yf2 - Yp) * (yf2 - Yp)));
if ( myTypeOfPolygonFilling != Graphic2d_TOPF_EMPTY )
found = Abs (d1 + d2) < 2 * maxRadius;
if ( !found )
found = Abs(d1 + d2 - 2 * maxRadius) < aPrecision;
if ( found )
SetPickedIndex( 0 );
}
#else
Standard_ShortReal xf1,yf1,xf2,yf2; //Sourses.
Standard_ShortReal Xp, Yp;
Standard_ShortReal q =
Sqrt( Abs( myMajorRadius*myMajorRadius - myMinorRadius*myMinorRadius) );
Standard_ShortReal cos = Cos (myAngle);
Standard_ShortReal sin = Sin (myAngle);
// Focus 1 and 2 calculated for the ellipse with centre
// at the origin of mark(0,0)
xf1 = q*cos;
yf1 = q*sin;
xf2 = -q*cos;
yf2 = -q*sin;
Xp = SRX - myX; Yp = SRY - myY;
Standard_ShortReal d1,d2;
d1 = Sqrt ( (xf1 - Xp) * (xf1 - Xp) + (yf1 - Yp) * (yf1 - Yp));
d2 = Sqrt ( (xf2 - Xp) * (xf2 - Xp) + (yf2 - Yp) * (yf2 - Yp));
if ( myTypeOfPolygonFilling != Graphic2d_TOPF_EMPTY )
found = Abs (d1 + d2) < 2 * maxRadius;
if ( !found )
found = Abs(d1 + d2 - 2 * maxRadius) < aPrecision;
#endif
} // end if it's in MinMax
return found;
}
void Graphic2d_Ellips::Center(Quantity_Length& X,Quantity_Length& Y) const {
X = Quantity_Length( myX );
Y = Quantity_Length( myY );
}
Quantity_Length Graphic2d_Ellips::MajorRadius() const {
return Quantity_Length( myMajorRadius );
}
Quantity_Length Graphic2d_Ellips::MinorRadius() const {
return Quantity_Length( myMinorRadius );
}
Quantity_PlaneAngle Graphic2d_Ellips::Angle() const {
return Quantity_PlaneAngle( myAngle );
}
void Graphic2d_Ellips::Save(Aspect_FStream& aFStream) const
{
*aFStream << "Graphic2d_Ellips" << endl;
*aFStream << myX << ' ' << myY << endl;
*aFStream << myMajorRadius << ' ' << myMinorRadius << endl;
*aFStream << myAngle << endl;
Graphic2d_Line::Save(aFStream);
}
void Graphic2d_Ellips::Retrieve(Aspect_IFStream& anIFStream,
const Handle(Graphic2d_GraphicObject)& aGraphicObject)
{
Standard_ShortReal X, Y, radMaj, radMin, Ang;
*anIFStream >> X >> Y;
*anIFStream >> radMaj >> radMin;
*anIFStream >> Ang;
Handle(Graphic2d_Ellips)
theEll = new Graphic2d_Ellips(aGraphicObject, X, Y, radMaj, radMin, Ang);
((Handle (Graphic2d_Line))theEll)->Retrieve(anIFStream);
}
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