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/***************************************************************************
deepskyobject.cpp - K Desktop Planetarium
-------------------
begin : Sun Feb 11 2001
copyright : (C) 2001 by Jason Harris
email : jharris@30doradus.org
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <kglobal.h>
#include <tqfile.h>
#include <tqregexp.h>
#include <tqpainter.h>
#include <tqimage.h>
#include <tqstring.h>
#include "deepskyobject.h"
#include "kstarsdata.h"
#include "ksutils.h"
#include "dms.h"
#include "kspopupmenu.h"
DeepSkyObject::DeepSkyObject( DeepSkyObject &o )
: SkyObject( o ) {
MajorAxis = o.a();
MinorAxis = o.b();
PositionAngle = o.pa();
UGC = o.ugc();
PGC = o.pgc();
setCatalog( o.catalog() );
Image = o.image();
}
DeepSkyObject::DeepSkyObject( int t, dms r, dms d, float m,
TQString n, TQString n2, TQString lname, TQString cat,
float a, float b, double pa, int pgc, int ugc )
: SkyObject( t, r, d, m, n, n2, lname ) {
MajorAxis = a;
MinorAxis = b;
PositionAngle = pa;
PGC = pgc;
UGC = ugc;
setCatalog( cat );
Image = 0;
}
DeepSkyObject::DeepSkyObject( int t, double r, double d, float m,
TQString n, TQString n2, TQString lname, TQString cat,
float a, float b, double pa, int pgc, int ugc )
: SkyObject( t, r, d, m, n, n2, lname ) {
MajorAxis = a;
MinorAxis = b;
PositionAngle = pa;
PGC = pgc;
UGC = ugc;
setCatalog( cat );
Image = 0;
}
float DeepSkyObject::e( void ) const {
if ( MajorAxis==0.0 || MinorAxis==0.0 ) return 1.0; //assume circular
return MinorAxis / MajorAxis;
}
TQString DeepSkyObject::catalog() const {
if ( isCatalogM() ) return TQString("M");
if ( isCatalogNGC() ) return TQString("NGC");
if ( isCatalogIC() ) return TQString("IC");
return TQString("");
}
void DeepSkyObject::setCatalog( const TQString &cat ) {
if ( cat.upper() == "M" ) Catalog = (unsigned char)CAT_MESSIER;
else if ( cat.upper() == "NGC" ) Catalog = (unsigned char)CAT_NGC;
else if ( cat.upper() == "IC" ) Catalog = (unsigned char)CAT_IC;
else Catalog = (unsigned char)CAT_UNKNOWN;
}
TQImage* DeepSkyObject::readImage( void ) {
TQFile file;
if ( Image==0 ) { //Image not currently set; try to load it from disk.
TQString fname = name().lower().replace( TQRegExp(" "), "" ) + ".png";
if ( KSUtils::openDataFile( file, fname ) ) {
file.close();
Image = new TQImage( file.name(), "PNG" );
}
}
return Image;
}
void DeepSkyObject::deleteImage() { delete Image; Image = 0; }
void DeepSkyObject::drawSymbol( TQPainter &psky, int x, int y, double PositionAngle, double zoom, double scale ) {
// if size is 0.0 set it to 1.0, this are normally stars (type 0 and 1)
// if we use size 0.0 the star wouldn't be drawn
float majorAxis = a();
if ( majorAxis == 0.0 ) { majorAxis = 1.0; }
int size = int( scale * majorAxis * dms::PI * zoom / 10800.0 );
int dx1 = -size/2;
int dx2 = size/2;
int dy1 = int( -1.0*e()*size/2 );
int dy2 = int( e()*size/2 );
int x1 = x + dx1;
int x2 = x + dx2;
int y1 = y + dy1;
int y2 = y + dy2;
int dxa = -size/4;
int dxb = size/4;
int dya = int( -1.0*e()*size/4 );
int dyb = int( e()*size/4 );
int xa = x + dxa;
int xb = x + dxb;
int ya = y + dya;
int yb = y + dyb;
int psize;
TQBrush tempBrush;
switch ( type() ) {
case 0:
case 1: //catalog star
//Some NGC/IC objects are stars...changed their type to 1 (was double star)
if (size<2) size = 2;
psky.drawEllipse( x1, y1, size/2, size/2 );
break;
case 2: //Planet
break;
case 3: //Open cluster
tempBrush = psky.brush();
psky.setBrush( psky.pen().color() );
psize = 2;
if ( size > 50 ) psize *= 2;
if ( size > 100 ) psize *= 2;
psky.drawEllipse( xa, y1, psize, psize ); // draw circle of points
psky.drawEllipse( xb, y1, psize, psize );
psky.drawEllipse( xa, y2, psize, psize );
psky.drawEllipse( xb, y2, psize, psize );
psky.drawEllipse( x1, ya, psize, psize );
psky.drawEllipse( x1, yb, psize, psize );
psky.drawEllipse( x2, ya, psize, psize );
psky.drawEllipse( x2, yb, psize, psize );
psky.setBrush( tempBrush );
break;
case 4: //Globular Cluster
if (size<2) size = 2;
psky.save();
psky.translate( x, y );
psky.rotate( PositionAngle ); //rotate the coordinate system
psky.drawEllipse( dx1, dy1, size, int( e()*size ) );
psky.moveTo( 0, dy1 );
psky.lineTo( 0, dy2 );
psky.moveTo( dx1, 0 );
psky.lineTo( dx2, 0 );
psky.restore(); //reset coordinate system
break;
case 5: //Gaseous Nebula
if (size <2) size = 2;
psky.save();
psky.translate( x, y );
psky.rotate( PositionAngle ); //rotate the coordinate system
psky.drawLine( dx1, dy1, dx2, dy1 );
psky.drawLine( dx2, dy1, dx2, dy2 );
psky.drawLine( dx2, dy2, dx1, dy2 );
psky.drawLine( dx1, dy2, dx1, dy1 );
psky.restore(); //reset coordinate system
break;
case 6: //Planetary Nebula
if (size<2) size = 2;
psky.save();
psky.translate( x, y );
psky.rotate( PositionAngle ); //rotate the coordinate system
psky.drawEllipse( dx1, dy1, size, int( e()*size ) );
psky.moveTo( 0, dy1 );
psky.lineTo( 0, dy1 - int( e()*size/2 ) );
psky.moveTo( 0, dy2 );
psky.lineTo( 0, dy2 + int( e()*size/2 ) );
psky.moveTo( dx1, 0 );
psky.lineTo( dx1 - size/2, 0 );
psky.moveTo( dx2, 0 );
psky.lineTo( dx2 + size/2, 0 );
psky.restore(); //reset coordinate system
break;
case 7: //Supernova remnant
if (size<2) size = 2;
psky.save();
psky.translate( x, y );
psky.rotate( PositionAngle ); //rotate the coordinate system
psky.moveTo( 0, dy1 );
psky.lineTo( dx2, 0 );
psky.lineTo( 0, dy2 );
psky.lineTo( dx1, 0 );
psky.lineTo( 0, dy1 );
psky.restore(); //reset coordinate system
break;
case 8: //Galaxy
if ( size <1 && zoom > 20*MINZOOM ) size = 3; //force ellipse above zoomFactor 20
if ( size <1 && zoom > 5*MINZOOM ) size = 1; //force points above zoomFactor 5
if ( size>2 ) {
psky.save();
psky.translate( x, y );
psky.rotate( PositionAngle ); //rotate the coordinate system
psky.drawEllipse( dx1, dy1, size, int( e()*size ) );
psky.restore(); //reset coordinate system
} else if ( size>0 ) {
psky.drawPoint( x, y );
}
break;
}
}
void DeepSkyObject::drawImage( TQPainter &psky, int x, int y, double PositionAngle, double zoom, double scale ) {
TQImage *image = readImage();
TQImage ScaledImage;
if ( image ) {
int w = int( a() * scale * dms::PI * zoom/10800.0 );
if ( w < 0.75*psky.window().width() ) {
int h = int( w*image->height()/image->width() ); //preserve image's aspect ratio
int dx = int( 0.5*w );
int dy = int( 0.5*h );
ScaledImage = image->smoothScale( w, h );
psky.save();
psky.translate( x, y );
psky.rotate( PositionAngle ); //rotate the coordinate system
psky.drawImage( -dx, -dy, ScaledImage );
psky.restore();
}
}
}
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