// Draw constellations lines
void ConstellationMgr::drawLines(StelPainter& sPainter, const StelCore* core) const
{
	sPainter.enableTexture2d(false);
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	if (constellationLineThickness>1.f)
		glLineWidth(constellationLineThickness); // set line thickness
	// OpenGL ES 2.0 doesn't have GL_LINE_SMOOTH. But it looks much better.
	#ifdef GL_LINE_SMOOTH
	if (QOpenGLContext::currentContext()->format().renderableType()==QSurfaceFormat::OpenGL)
		glEnable(GL_LINE_SMOOTH);
	#endif

	const SphericalCap& viewportHalfspace = sPainter.getProjector()->getBoundingCap();
	vector < Constellation * >::const_iterator iter;
	for (iter = asterisms.begin(); iter != asterisms.end(); ++iter)
	{
		(*iter)->drawOptim(sPainter, core, viewportHalfspace);
	}
	if (constellationLineThickness>1.f)
		glLineWidth(1.f); // restore line thickness
	// OpenGL ES 2.0 doesn't have GL_LINE_SMOOTH. But it looks much better.
	#ifdef GL_LINE_SMOOTH
	if (QOpenGLContext::currentContext()->format().renderableType()==QSurfaceFormat::OpenGL)
		glDisable(GL_LINE_SMOOTH);
	#endif
}
Exemple #2
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void Constellation::drawName(StelPainter& sPainter, ConstellationMgr::ConstellationDisplayStyle style) const
{
	if (!nameFader.getInterstate())
		return;

	if (checkVisibility())
	{
		QString name;
		switch (style)
		{
			case ConstellationMgr::constellationsTranslated:
				name=nameI18;
				break;
			case ConstellationMgr::constellationsNative:
				name=nativeName;
				break;
			case ConstellationMgr::constellationsEnglish:
				name=englishName;
				break;
			case ConstellationMgr::constellationsAbbreviated:
				name=(abbreviation.startsWith('.') ? "" : abbreviation);
				break;
			Q_ASSERT(0);
		}

		sPainter.setColor(labelColor[0], labelColor[1], labelColor[2], nameFader.getInterstate());
		sPainter.drawText(XYname[0], XYname[1], name, 0., -sPainter.getFontMetrics().width(name)/2, 0, false);
	}
}
void Comet::drawComa(StelCore* core, StelProjector::ModelViewTranformP transfo)
{
	// Find rotation matrix from 0/0/1 to viewdirection! crossproduct for axis (normal vector), dotproduct for angle.
	Vec3d eclposNrm=eclipticPos - core->getObserverHeliocentricEclipticPos()  ; eclposNrm.normalize();
	Mat4d comarot=Mat4d::rotation(Vec3d(0.0, 0.0, 1.0)^(eclposNrm), std::acos(Vec3d(0.0, 0.0, 1.0).dot(eclposNrm)) );
	StelProjector::ModelViewTranformP transfo2 = transfo->clone();
	transfo2->combine(comarot);
	StelPainter* sPainter = new StelPainter(core->getProjection(transfo2));

	glEnable(GL_BLEND);
	glBlendFunc(GL_ONE, GL_ONE);
	glDisable(GL_CULL_FACE);

	// GZ: For the coma, we can use extinction via atmosphere.
	// In addition, light falloff is a bit reduced for better visibility. Power basis should be 0.4, we use 0.6.
	float minSkyMag=core->getSkyDrawer()->getLimitMagnitude();
	float mag100pct=minSkyMag-6.0f; // should be 5, but let us draw it a bit brighter.
	float magDrop=getVMagnitudeWithExtinction(core)-mag100pct;
	float magFactor=std::pow(0.6f , magDrop);
	magFactor=qMin(magFactor, 2.0f); // Limit excessively bright display.

	comaTexture->bind();
	sPainter->setColor(magFactor,magFactor,0.6f*magFactor);
	sPainter->setArrays((Vec3d*)comaVertexArr.constData(), (Vec2f*)comaTexCoordArr.constData());
	sPainter->drawFromArray(StelPainter::Triangles, comaVertexArr.size()/3);

	glDisable(GL_BLEND);

	if (sPainter)
		delete sPainter;
	sPainter=NULL;
}
void Supernova::draw(StelCore* core, StelPainter& painter)
{
	StelSkyDrawer* sd = core->getSkyDrawer();

	Vec3f color = Vec3f(1.f,1.f,1.f);
	if (StelApp::getInstance().getVisionModeNight())
		color = StelUtils::getNightColor(color);

	float rcMag[2], size, shift;
	double mag;

	StelUtils::spheToRect(snra, snde, XYZ);
	mag = getVMagnitude(core, true);
	sd->preDrawPointSource(&painter);
	
	if (mag <= sd->getLimitMagnitude())
	{
		sd->computeRCMag(mag, rcMag);		
//		sd->drawPointSource(&painter, Vec3f(XYZ[0], XYZ[1], XYZ[2]), rcMag, color, false);
		sd->drawPointSource(&painter, XYZ, rcMag, color, false);
		painter.setColor(color[0], color[1], color[2], 1);
		size = getAngularSize(NULL)*M_PI/180.*painter.getProjector()->getPixelPerRadAtCenter();
		shift = 6.f + size/1.8f;
		if (labelsFader.getInterstate()<=0.f)
		{
			painter.drawText(XYZ, designation, 0, shift, shift, false);
		}
	}

	sd->postDrawPointSource(&painter);
}
Exemple #5
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void Nebula::drawLabel(StelPainter& sPainter, float maxMagLabel)
{
	float lim = mag;
	if (lim > 50) lim = 15.f;

	// temporary workaround of this bug: https://bugs.launchpad.net/stellarium/+bug/1115035 --AW
	if (getEnglishName().contains("Pleiades"))
		lim = 5.f;

	if (lim>maxMagLabel)
		return;

	Vec3f col(labelColor[0], labelColor[1], labelColor[2]);

	sPainter.setColor(col[0], col[1], col[2], hintsBrightness);
	float size = getAngularSize(NULL)*M_PI/180.*sPainter.getProjector()->getPixelPerRadAtCenter();
	float shift = 4.f + size/1.8f;
	QString str;
	if (!nameI18.isEmpty())
		str = getNameI18n();
	else
	{
		if (M_nb > 0)
			str = QString("M %1").arg(M_nb);
		else if (C_nb > 0)
			str = QString("C %1").arg(C_nb);
		else if (NGC_nb > 0)
			str = QString("NGC %1").arg(NGC_nb);
		else if (IC_nb > 0)
			str = QString("IC %1").arg(IC_nb);		
	}

	sPainter.drawText(XY[0]+shift, XY[1]+shift, str, 0, 0, 0, false);
}
void StarMgr::drawPointer(StelPainter& sPainter, const StelCore* core)
{
	const QList<StelObjectP> newSelected = objectMgr->getSelectedObject("Star");
	if (!newSelected.empty())
	{
		const StelObjectP obj = newSelected[0];
		Vec3d pos=obj->getJ2000EquatorialPos(core);

		Vec3d screenpos;
		// Compute 2D pos and return if outside screen
		if (!sPainter.getProjector()->project(pos, screenpos))
			return;

		Vec3f c(obj->getInfoColor());
		if (StelApp::getInstance().getVisionModeNight())
			c = StelUtils::getNightColor(c);

		sPainter.setColor(c[0], c[1], c[2]);
		texPointer->bind();
		sPainter.enableTexture2d(true);
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); // Normal transparency mode
		sPainter.drawSprite2dMode(screenpos[0], screenpos[1], 13.f, StelApp::getInstance().getTotalRunTime()*40.);
	}
}
bool ScreenLabel::draw(StelCore*, StelPainter& sPainter)
{
	if (labelFader.getInterstate() <= 0.0)
		return false;

	sPainter.setColor(labelColor[0], labelColor[1], labelColor[2], labelFader.getInterstate());
	sPainter.setFont(labelFont);
	sPainter.drawText(screenX, screenY, labelText, 0, 0, 0, false);
	return true;
}
Exemple #8
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void TleTraj::drawOrbit(StelPainter &painter)
{
    StelVertexArray vertexArray(StelVertexArray::LineStrip);
    for (QList<Vec3d>::iterator it = trajectory.begin(); it != trajectory.end(); ++it)
    {
        vertexArray.vertex.append(*it);
    }
    painter.setColor(orbitColor->redF(), orbitColor->greenF(), orbitColor->blueF());
    painter.drawGreatCircleArcs(vertexArray, &viewportHalfspace);
}
Exemple #9
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// Draw the art texture
void Constellation::drawArt(StelPainter& sPainter) const
{
	glBlendFunc(GL_ONE, GL_ONE);
	sPainter.enableTexture2d(true);
	glEnable(GL_BLEND);
	glEnable(GL_CULL_FACE);
	SphericalRegionP region = sPainter.getProjector()->getViewportConvexPolygon();
	drawArtOptim(sPainter, *region);

	glDisable(GL_CULL_FACE);
}
// Draw constellations lines
void ConstellationMgr::drawLines(StelPainter& sPainter, const StelCore* core) const
{
	sPainter.enableTexture2d(false);
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	const SphericalCap& viewportHalfspace = sPainter.getProjector()->getBoundingCap();
	vector < Constellation * >::const_iterator iter;
	for (iter = asterisms.begin(); iter != asterisms.end(); ++iter)
	{
		(*iter)->drawOptim(sPainter, core, viewportHalfspace);
	}
}
Exemple #11
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// returns true if visible
// Assumes that we are in local frame
void MeteorStream::draw(const StelCore* core, StelPainter& sPainter)
{
	if(!alive)
		return;

	Vec3d spos = position;
	Vec3d epos = posTrain;

	// convert to equ
	spos.transfo4d(viewMatrix);
	epos.transfo4d(viewMatrix);

	// convert to local and correct for earth radius
	//[since equ and local coordinates in stellarium use same 0 point!]
	spos = core->j2000ToAltAz(spos);
	epos = core->j2000ToAltAz(epos);
	spos[2] -= EARTH_RADIUS;
	epos[2] -= EARTH_RADIUS;
	// 1216 is to scale down under 1 for desktop version
	spos/=1216;
	epos/=1216;

	// connect this point with last drawn point
	double tmag = mag*distMultiplier;

	QVector<Vec4f> colorArray;
	QVector<Vec3d> vertexArray;
	// last point - dark
	colorArray.push_back(Vec4f(0,0,0,0));
	vertexArray.push_back(epos);
	// compute intermediate points to curve along projection distortions
	int segments = 10;
	for (int i=1; i<segments; i++) {
		Vec3d posi = posInternal;
		posi[2] = posTrain[2] + i*(position[2] - posTrain[2])/segments;
		posi.transfo4d(viewMatrix);
		posi = core->j2000ToAltAz(posi);
		posi[2] -= EARTH_RADIUS;
		posi/=1216;

		colorArray.push_back(Vec4f(1,1,1,i*tmag/segments));
		vertexArray.push_back(posi);
	}
	// first point - light
	colorArray.push_back(Vec4f(1,1,1,tmag));
	vertexArray.push_back(spos);

	sPainter.setColorPointer(4, GL_FLOAT, colorArray.constData());
	sPainter.setVertexPointer(3, GL_DOUBLE, vertexArray.constData());
	sPainter.enableClientStates(true, false, true);
	sPainter.drawFromArray(StelPainter::LineStrip, vertexArray.size(), 0, true);
	sPainter.enableClientStates(false);
}
// Draw the names of all the constellations
void ConstellationMgr::drawNames(StelPainter& sPainter) const
{
	glEnable(GL_BLEND);
	sPainter.enableTexture2d(true);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
	vector < Constellation * >::const_iterator iter;
	for (iter = asterisms.begin(); iter != asterisms.end(); iter++)
	{
		// Check if in the field of view
		if (sPainter.getProjector()->projectCheck((*iter)->XYZname, (*iter)->XYname))
			(*iter)->drawName(sPainter);
	}
}
// Draw constellations art textures
void ConstellationMgr::drawArt(StelPainter& sPainter) const
{
	glBlendFunc(GL_ONE, GL_ONE);
	sPainter.enableTexture2d(true);
	glEnable(GL_BLEND);
	glEnable(GL_CULL_FACE);

	vector < Constellation * >::const_iterator iter;
	SphericalRegionP region = sPainter.getProjector()->getViewportConvexPolygon();
	for (iter = asterisms.begin(); iter != asterisms.end(); ++iter)
	{
		(*iter)->drawArtOptim(sPainter, *region);
	}

	glDisable(GL_CULL_FACE);
}
Exemple #14
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void TleTraj::draw(const StelCore *core, StelPainter& painter)
{
    Vec3d pos;
    satd2StelCoord(curData, pos);
    XYZ = core->altAzToJ2000(pos);
    Vec3d xy;
    if (painter.getProjector()->project(pos, xy))
    {
        glEnable(GL_TEXTURE_2D);
        glColor3f(orbitColor->redF(), orbitColor->greenF(), orbitColor->blueF());
        hintTexture->bind();
        painter.drawSprite2dMode(xy[0], xy[1], 16);
        glDisable(GL_TEXTURE_2D);
        drawOrbit(painter);
    }
}
Exemple #15
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void Constellation::drawArtOptim(StelPainter& sPainter, const SphericalRegion& region) const
{
	if (checkVisibility())
	{
		const float intensity = artFader.getInterstate();
		if (artTexture && intensity && region.intersects(boundingCap))
		{
			sPainter.setColor(intensity,intensity,intensity);

			// The texture is not fully loaded
			if (artTexture->bind()==false)
				return;

			sPainter.drawStelVertexArray(artPolygon);
		}
	}
}
void NebulaMgr::drawPointer(const StelCore* core, StelPainter& sPainter)
{
	const StelProjectorP prj = core->getProjection(StelCore::FrameJ2000);

	const QList<StelObjectP> newSelected = GETSTELMODULE(StelObjectMgr)->getSelectedObject("Nebula");
	if (!newSelected.empty())
	{
		const StelObjectP obj = newSelected[0];
		Vec3d pos=obj->getJ2000EquatorialPos(core);

		// Compute 2D pos and return if outside screen
		if (!prj->projectInPlace(pos)) return;		
		if (StelApp::getInstance().getVisionModeNight())
			sPainter.setColor(0.8f,0.0f,0.0f);
		else
			sPainter.setColor(0.4f,0.5f,0.8f);

		texPointer->bind();

		sPainter.enableTexture2d(true);
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); // Normal transparency mode

		// Size on screen
		float size = obj->getAngularSize(core)*M_PI/180.*prj->getPixelPerRadAtCenter();

		size+=20.f + 10.f*std::sin(2.f * StelApp::getInstance().getTotalRunTime());
		sPainter.drawSprite2dMode(pos[0]-size/2, pos[1]-size/2, 10, 90);
		sPainter.drawSprite2dMode(pos[0]-size/2, pos[1]+size/2, 10, 0);
		sPainter.drawSprite2dMode(pos[0]+size/2, pos[1]+size/2, 10, -90);
		sPainter.drawSprite2dMode(pos[0]+size/2, pos[1]-size/2, 10, -180);
	}
}
Exemple #17
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void Nebula::drawHints(StelPainter& sPainter, float maxMagHints)
{
	float lim = mag;
	if (lim > 50) lim = 15.f;

	// temporary workaround of this bug: https://bugs.launchpad.net/stellarium/+bug/1115035 --AW
	if (getEnglishName().contains("Pleiades"))
		lim = 5.f;

	if (lim>maxMagHints)
		return;
	glEnable(GL_BLEND);
	glBlendFunc(GL_ONE, GL_ONE);
	float lum = 1.f;//qMin(1,4.f/getOnScreenSize(core))*0.8;
	Vec3f col(circleColor[0]*lum*hintsBrightness, circleColor[1]*lum*hintsBrightness, circleColor[2]*lum*hintsBrightness);

	sPainter.setColor(col[0], col[1], col[2], 1);
	switch (nType)
	{
		case NebGx:
			Nebula::texGalaxy->bind();
			break;
		case NebOc:
			Nebula::texOpenCluster->bind();
			break;
		case NebGc:
			Nebula::texGlobularCluster->bind();
			break;
		case NebN:
			Nebula::texDiffuseNebula->bind();
			break;
		case NebPn:
			Nebula::texPlanetaryNebula->bind();
			break;
		case NebCn:
			Nebula::texOpenClusterWithNebulosity->bind();
			break;
		default:
			Nebula::texCircle->bind();
	}

	sPainter.drawSprite2dMode(XY[0], XY[1], 6);
}
void ConstellationMgr::drawBoundaries(StelPainter& sPainter) const
{
	sPainter.enableTexture2d(false);
	glDisable(GL_BLEND);
	vector < Constellation * >::const_iterator iter;
	for (iter = asterisms.begin(); iter != asterisms.end(); ++iter)
	{
		(*iter)->drawBoundaryOptim(sPainter);
	}	
}
Exemple #19
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void Constellation::drawOptim(StelPainter& sPainter, const StelCore* core, const SphericalCap& viewportHalfspace) const
{
	if (lineFader.getInterstate()<=0.0001f)
		return;

	if (checkVisibility())
	{
		sPainter.setColor(lineColor[0], lineColor[1], lineColor[2], lineFader.getInterstate());

		Vec3d star1;
		Vec3d star2;
		for (unsigned int i=0;i<numberOfSegments;++i)
		{
			star1=asterism[2*i]->getJ2000EquatorialPos(core);
			star2=asterism[2*i+1]->getJ2000EquatorialPos(core);
			star1.normalize();
			star2.normalize();			
			sPainter.drawGreatCircleArc(star1, star2, &viewportHalfspace);			
		}
	}
}
Exemple #20
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void Galaxy::draw(StelCore* core, StelPainter& painter, float)
{
    StelSkyDrawer* sd = core->getSkyDrawer();

    Vec3f color = Vec3f(0.4f,0.5f,1.2f);
    if (StelApp::getInstance().getVisionModeNight())
        color = StelUtils::getNightColor(color);

    double mag = getVMagnitude(core, true);

    StelUtils::spheToRect(RA, DE, XYZ);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
    glEnable(GL_BLEND);
    glEnable(GL_TEXTURE_2D);
    painter.setColor(color[0], color[1], color[2], Galaxy::galaxyBrightness);
    glColor4f(color[0],color[1],color[2], Galaxy::galaxyBrightness);

    if (mag <= sd->getLimitMagnitude())
    {
        Galaxy::markerTexture->bind();

        float size = getAngularSize(NULL)*M_PI/180.*painter.getProjector()->getPixelPerRadAtCenter();
        float shift = 5.f + size/1.6f;
            if (GETSTELMODULE(POGS)->getDisplayMode())
            {
                painter.drawSprite2dMode(XYZ, 6);
                painter.drawText(XYZ, " ", 0, shift, shift, false);
            }
            else
            {
                painter.drawSprite2dMode(XYZ, 6);
                painter.drawText(XYZ, designation, 0, shift, shift, false);
            }
    }
}
Exemple #21
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void Pulsars::drawPointer(StelCore* core, StelPainter& painter)
{
	const StelProjectorP prj = core->getProjection(StelCore::FrameJ2000);

	const QList<StelObjectP> newSelected = GETSTELMODULE(StelObjectMgr)->getSelectedObject("Pulsar");
	if (!newSelected.empty())
	{
		const StelObjectP obj = newSelected[0];
		Vec3d pos=obj->getJ2000EquatorialPos(core);

		Vec3d screenpos;
		// Compute 2D pos and return if outside screen
		if (!painter.getProjector()->project(pos, screenpos))
			return;

		const Vec3f& c(obj->getInfoColor());
		painter.setColor(c[0],c[1],c[2]);
		texPointer->bind();
		painter.setBlending(true);
		painter.drawSprite2dMode(screenpos[0], screenpos[1], 13.f, StelApp::getInstance().getTotalRunTime()*40.);
	}
}
Exemple #22
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void Novae::drawPointer(StelCore* core, StelPainter &painter)
{
	const QList<StelObjectP> newSelected = GETSTELMODULE(StelObjectMgr)->getSelectedObject("Nova");
	if (!newSelected.empty())
	{
		const StelObjectP obj = newSelected[0];
		Vec3d pos=obj->getJ2000EquatorialPos(core);

		Vec3d screenpos;
		// Compute 2D pos and return if outside screen
		if (!painter.getProjector()->project(pos, screenpos))
			return;

		const Vec3f& c(obj->getInfoColor());
		painter.setColor(c[0],c[1],c[2]);
		texPointer->bind();
		painter.enableTexture2d(true);
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); // Normal transparency mode
		painter.drawSprite2dMode(screenpos[0], screenpos[1], 13.f, StelApp::getInstance().getTotalRunTime()*40.);
	}
}
Exemple #23
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void Constellation::drawBoundaryOptim(StelPainter& sPainter) const
{
	if (!boundaryFader.getInterstate())
		return;

	sPainter.enableTexture2d(false);
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); // Normal transparency mode

	sPainter.setColor(boundaryColor[0], boundaryColor[1], boundaryColor[2], boundaryFader.getInterstate());

	unsigned int i, j;
	size_t size;
	Vec3f pt1, pt2;
	Vec3d ptd1, ptd2;
	std::vector<Vec3f> *points;

	if (singleSelected) size = isolatedBoundarySegments.size();
	else size = sharedBoundarySegments.size();

	const SphericalCap& viewportHalfspace = sPainter.getProjector()->getBoundingCap();

	for (i=0;i<size;i++)
	{
		if (singleSelected) points = isolatedBoundarySegments[i];
		else points = sharedBoundarySegments[i];

		for (j=0;j<points->size()-1;j++)
		{
			pt1 = points->at(j);
			pt2 = points->at(j+1);
			if (pt1*pt2>0.9999999f)
				continue;
			ptd1.set(pt1[0], pt1[1], pt1[2]);
			ptd2.set(pt2[0], pt2[1], pt2[2]);
			sPainter.drawGreatCircleArc(ptd1, ptd2, &viewportHalfspace);
		}
	}
}
void Quasar::draw(StelCore* core, StelPainter& painter)
{
	StelSkyDrawer* sd = core->getSkyDrawer();

	Vec3f color = sd->indexToColor(BvToColorIndex(bV))*0.75f;
	Vec3f dcolor = Vec3f(1.2f,0.5f,0.4f);
	if (StelApp::getInstance().getVisionModeNight())
		dcolor = StelUtils::getNightColor(dcolor);

	float rcMag[2], size, shift;
	double mag;

	StelUtils::spheToRect(qRA, qDE, XYZ);
        mag = getVMagnitude(core, true);	

	if (GETSTELMODULE(Quasars)->getDisplayMode())
	{
		glEnable(GL_BLEND);
		glBlendFunc(GL_ONE, GL_ONE);
		painter.setColor(dcolor[0], dcolor[1], dcolor[2], 1);

		Quasar::markerTexture->bind();
		size = getAngularSize(NULL)*M_PI/180.*painter.getProjector()->getPixelPerRadAtCenter();
		shift = 5.f + size/1.6f;
		if (labelsFader.getInterstate()<=0.f)
		{
			painter.drawSprite2dMode(XYZ, 4);
			painter.drawText(XYZ, " ", 0, shift, shift, false);
		}
	}
	else
	{
		sd->preDrawPointSource(&painter);
	
		if (mag <= sd->getLimitMagnitude())
		{
			sd->computeRCMag(mag, rcMag);
			//sd->drawPointSource(&painter, Vec3f(XYZ[0], XYZ[1], XYZ[2]), rcMag, sd->indexToColor(BvToColorIndex(bV)), false);
			sd->drawPointSource(&painter, XYZ, rcMag, sd->indexToColor(BvToColorIndex(bV)), false);
			painter.setColor(color[0], color[1], color[2], 1);
			size = getAngularSize(NULL)*M_PI/180.*painter.getProjector()->getPixelPerRadAtCenter();
			shift = 6.f + size/1.8f;
			if (labelsFader.getInterstate()<=0.f)
			{
				painter.drawText(XYZ, designation, 0, shift, shift, false);
			}
		}

		sd->postDrawPointSource(&painter);
	}
}
void ConstellationMgr::drawBoundaries(StelPainter& sPainter) const
{
	sPainter.enableTexture2d(false);
	glDisable(GL_BLEND);
#ifndef USE_OPENGL_ES2
	glLineStipple(2, 0x3333);
	glEnable(GL_LINE_STIPPLE);
#endif
	vector < Constellation * >::const_iterator iter;
	for (iter = asterisms.begin(); iter != asterisms.end(); ++iter)
	{
		(*iter)->drawBoundaryOptim(sPainter);
	}
#ifndef USE_OPENGL_ES2
	glDisable(GL_LINE_STIPPLE);
#endif
}
void Comet::drawTail(StelCore* core, StelProjector::ModelViewTranformP transfo, bool gas)
{
	// Find rotation matrix from 0/0/1 to eclipticPosition: crossproduct for axis (normal vector), dotproduct for angle.
	Vec3d eclposNrm=eclipticPos; eclposNrm.normalize();
	Mat4d tailrot=Mat4d::rotation(Vec3d(0.0, 0.0, 1.0)^(eclposNrm), std::acos(Vec3d(0.0, 0.0, 1.0).dot(eclposNrm)) );

	StelProjector::ModelViewTranformP transfo2 = transfo->clone();
	transfo2->combine(tailrot);
	if (!gas) {
		CometOrbit* orbit=(CometOrbit*)userDataPtr;
		Vec3d velocity=orbit->getVelocity(); // [AU/d]
		// This was a try to rotate a straight parabola somewhat away from the antisolar direction.
		//Mat4d dustTailRot=Mat4d::rotation(eclposNrm^(-velocity), 0.15f*std::acos(eclposNrm.dot(-velocity))); // GZ: This scale factor of 0.15 is empirical from photos of Halley and Hale-Bopp.
		// The curved tail is curved towards positive X. We first rotate around the Z axis into a direction opposite of the motion vector, then again the antisolar rotation applies.
		Mat4d dustTailRot=Mat4d::zrotation(atan2(velocity[1], velocity[0]) + M_PI);
		transfo2->combine(dustTailRot);
		// In addition, we let the dust tail already start with a light tilt.
		Mat4d dustTailYrot=Mat4d::yrotation(5.0f*velocity.length()); // again, this is pretty ad-hoc, feel free to improve!
		transfo2->combine(dustTailYrot);
	}
	StelPainter* sPainter = new StelPainter(core->getProjection(transfo2));
	glEnable(GL_BLEND);
	glBlendFunc(GL_ONE, GL_ONE);
	glDisable(GL_CULL_FACE);

	// GZ: If we use getVMagnitudeWithExtinction(), a head extincted in the horizon mist can completely hide an otherwise frighteningly long tail.
	// we must use unextincted mag, but mix/dim with atmosphere/sky brightness.
	// In addition, light falloff is a bit reduced for better visibility. Power basis should be 0.4, we use 0.6.
	//float magfactor=std::pow(0.4f , getVMagnitudeWithExtinction(core));
	float magFactor=std::pow(0.6f , getVMagnitude(core));
	if (core->getSkyDrawer()->getFlagHasAtmosphere())
	{
		// Mix with sky brightness and light pollution: This is very ad-hoc, if someone finds a better solution, please go ahead!
		// Light pollution:
		float bortleIndexFactor=0.1f * (11 - core->getSkyDrawer()->getBortleScaleIndex());
		magFactor*= bortleIndexFactor*bortleIndexFactor; // GZ-Guesstimate for light pollution influence
		// sky brightness: This is about 10 for twilight where bright comet tails should already be visible. Dark night is close to 0.
		float avgAtmLum=GETSTELMODULE(LandscapeMgr)->getAtmosphereAverageLuminance();
		float atmLumFactor=(15.0f-avgAtmLum)/15.0f;  if (atmLumFactor<0.05f) atmLumFactor=0.05f;    //atmLumFactor=std::sqrt(atmLumFactor);
		magFactor*=atmLumFactor*atmLumFactor;
	}
	magFactor*=(gas? 0.9 : dustTailBrightnessFactor); // TBD: empirical adjustment for texture brightness.
	magFactor=qMin(magFactor, 1.05f); // Limit excessively bright display.

	gasTailTexture->bind();

	if (gas) {
		//gasTailTexture->bind();
		sPainter->setColor(0.15f*magFactor,0.15f*magFactor,0.6f*magFactor);
		sPainter->setArrays((Vec3d*)gastailVertexArr.constData(), (Vec2f*)gastailTexCoordArr.constData());
		sPainter->drawFromArray(StelPainter::Triangles, gastailIndices.size(), 0, true, gastailIndices.constData());

	} else {
		//dustTailTexture->bind();
		sPainter->setColor(magFactor, magFactor,0.6f*magFactor);
		//sPainter->setArrays((Vec3d*)dusttailVertexArr.constData(), (Vec2f*)dusttailTexCoordArr.constData());
		//sPainter->drawFromArray(StelPainter::Triangles, dusttailIndices.size(), 0, true, dusttailIndices.constData());
		sPainter->setArrays((Vec3d*)dusttailVertexArr.constData(), (Vec2f*)gastailTexCoordArr.constData());
		sPainter->drawFromArray(StelPainter::Triangles, gastailIndices.size(), 0, true, gastailIndices.constData());
	}
	glDisable(GL_BLEND);



	if (sPainter)
		delete sPainter;
	sPainter=NULL;
}
bool SkyLabel::draw(StelCore* core, StelPainter& sPainter)
{
	if(labelFader.getInterstate() <= 0.0)
		return false;

	Vec3d objectPos = labelObject->getJ2000EquatorialPos(core);
	Vec3d labelXY;
	sPainter.getProjector()->project(objectPos,labelXY);

	sPainter.setFont(labelFont);
			
	double xOffset(0.);
	double yOffset(0.);
	char hJustify = 'c';
	char vJustify = 'c';

	if (labelSide.toUpper().contains("N"))
	{
		yOffset = 1.0;
		vJustify = 'b'; // bottom justify text
	}
	else if (labelSide.toUpper().contains("S"))
	{
		yOffset = -1.0;
		vJustify = 't'; // top justufy text
	}

	if (labelSide.toUpper().contains("E"))
	{
		xOffset = 1.0;
		hJustify = 'l'; // right justify text
	}
	else if (labelSide.toUpper().contains("W"))
	{
		xOffset = -1.0;
		hJustify = 'r'; // left justify text
	}

	if (labelDistance >= 0.0)
	{
		xOffset *= labelDistance;
		yOffset *= labelDistance;
	}
	else
	{
		float shift = 4.f + labelObject->getAngularSize(core)*M_PI/180.*sPainter.getProjector()->getPixelPerRadAtCenter()/1.8f;
		// use the object size
		xOffset *= shift;
		yOffset *= shift;
	}

	double jxOffset(0.);
	double jyOffset(0.); 
	if (hJustify == 'r')
		jxOffset = sPainter.getFontMetrics().width(labelText);
	else if (hJustify == 'c')
		jxOffset = sPainter.getFontMetrics().width(labelText) / 2.;

	if (vJustify == 't')
		jyOffset = sPainter.getFontMetrics().height();
	else if (vJustify == 'c')
		jyOffset = sPainter.getFontMetrics().height() / 2.;

	sPainter.setColor(labelColor[0], labelColor[1], labelColor[2], labelFader.getInterstate());
	sPainter.drawText(labelXY[0]+xOffset-jxOffset, labelXY[1]+yOffset-jyOffset, labelText, 0, 0, 0, false);

	if (labelStyle == SkyLabel::Line)
	{
		sPainter.enableTexture2d(false);
		glEnable(GL_BLEND);
		glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);

		// screen coordinates of object
		Vec3d objXY;
		sPainter.getProjector()->project(objectPos,objXY);

		double lineEndX = labelXY[0]+xOffset;
		double lineEndY = labelXY[1]+yOffset;

		if (vJustify == 'b')
			lineEndY -= 5;
		else if (vJustify == 't')
			lineEndY += 5;
				
		if (hJustify == 'l')
			lineEndX -= 5;
		else if (hJustify == 'r')
			lineEndX += 5;
				
		sPainter.setColor(labelColor[0], labelColor[1], labelColor[2], labelFader.getInterstate());
		
		sPainter.drawLine2d(lineEndX,lineEndY,objXY[0], objXY[1]);
	}

	return true;
}
Exemple #28
0
void Nebula::drawLabel(StelPainter& sPainter, float maxMagLabel)
{
	float lim = mag;
	if (lim > 50) lim = 15.f;

	// temporary workaround of this bug: https://bugs.launchpad.net/stellarium/+bug/1115035 --AW
	if (getEnglishName().contains("Pleiades"))
		lim = 5.f;
	// Dark nebulae. Not sure how to assess visibility from opacity? --GZ
	if (nType==NebDn)
	{
		// GZ: ad-hoc visibility formula: assuming good visibility if objects of mag9 are visible, "usual" opacity 5 and size 30', better visibility (discernability) comes with higher opacity and larger size,
		// 9-(opac-5)-2*(angularSize-0.5)
		if (angularSize>0 && mag<50)
			lim = 15.0f - mag - 2.0f*angularSize;
		else
			lim = 9.0f;
	}
	else if (nType==NebHII || nType==NebHa)
		lim=9.0f;
	if (lim>maxMagLabel)
		return;

	Vec3d win;
	// Check visibility of DSO labels
	if (!(sPainter.getProjector()->projectCheck(XYZ, win)))
		return;

	Vec3f col(labelColor[0], labelColor[1], labelColor[2]);

	sPainter.setColor(col[0], col[1], col[2], hintsBrightness);
	float size = getAngularSize(NULL)*M_PI/180.*sPainter.getProjector()->getPixelPerRadAtCenter();
	float shift = 4.f + (drawHintProportional ? size : size/1.8f);
	QString str;
	if (!nameI18.isEmpty())
		str = getNameI18n();
	else
	{
		// On screen label: one only, priority as given here. NGC should win over Sharpless. (GZ)
		if (M_nb > 0)
			str = QString("M %1").arg(M_nb);
		else if (C_nb > 0)
			str = QString("C %1").arg(C_nb);
		else if (NGC_nb > 0)
			str = QString("NGC %1").arg(NGC_nb);
		else if (IC_nb > 0)
			str = QString("IC %1").arg(IC_nb);
		else if (B_nb > 0)
			str = QString("B %1").arg(B_nb);		
		else if (Sh2_nb > 0)
			str = QString("Sh 2-%1").arg(Sh2_nb);
		else if (VdB_nb > 0)
			str = QString("VdB %1").arg(VdB_nb);
		else if (RCW_nb > 0)
			str = QString("RCW %1").arg(RCW_nb);
		else if (LDN_nb > 0)
			str = QString("LDN %1").arg(LDN_nb);
		else if (LBN_nb > 0)
			str = QString("LBN %1").arg(LBN_nb);
		else if (Cr_nb > 0)
			str = QString("Cr %1").arg(Cr_nb);
		else if (Mel_nb > 0)
			str = QString("Mel %1").arg(Mel_nb);
	}

	sPainter.drawText(XY[0]+shift, XY[1]+shift, str, 0, 0, 0, false);
}
Exemple #29
0
// returns true if visible
// Assumes that we are in local frame
void Meteor::draw(const StelCore* core, StelPainter& sPainter)
{
    if (!alive)
        return;

    const StelProjectorP proj = sPainter.getProjector();

    Vec3d spos = position;
    Vec3d epos = posTrain;

    // convert to equ
    spos.transfo4d(mmat);
    epos.transfo4d(mmat);

    // convert to local and correct for earth radius [since equ and local coordinates in stellarium use same 0 point!]
    spos = core->equinoxEquToAltAz( spos );
    epos = core->equinoxEquToAltAz( epos );
    spos[2] -= EARTH_RADIUS;
    epos[2] -= EARTH_RADIUS;
    // 1216 is to scale down under 1 for desktop version
    spos/=1216;
    epos/=1216;

    //  qDebug("[%f %f %f] (%d, %d) (%d, %d)\n", position[0], position[1], position[2], (int)start[0], (int)start[1], (int)end[0], (int)end[1]);

    if (train)
    {
        // connect this point with last drawn point
        double tmag = mag*distMultiplier;

        // compute an intermediate point so can curve slightly along projection distortions
        Vec3d posi = posInternal;
        posi[2] = position[2] + (posTrain[2] - position[2])/2;
        posi.transfo4d(mmat);
        posi = core->equinoxEquToAltAz( posi );
        posi[2] -= EARTH_RADIUS;
        posi/=1216;

        // draw dark to light
        Vec4f colorArray[3];
        colorArray[0].set(0,0,0,0);
        colorArray[1].set(1,1,1,tmag*0.5);
        colorArray[2].set(1,1,1,tmag);
        Vec3d vertexArray[3];
        vertexArray[0]=epos;
        vertexArray[1]=posi;
        vertexArray[2]=spos;
        sPainter.setColorPointer(4, GL_FLOAT, colorArray);
        sPainter.setVertexPointer(3, GL_DOUBLE, vertexArray);
        // TODO the crash doesn't appear when the last true is set to false
        sPainter.enableClientStates(true, false, true);
        sPainter.drawFromArray(StelPainter::LineStrip, 3, 0, true);
        sPainter.enableClientStates(false);
    }
    else
    {
        sPainter.setPointSize(1.f);
        Vec3d start;
        proj->project(spos, start);
        sPainter.drawPoint2d(start[0],start[1]);
    }

    train = 1;
}
Exemple #30
0
void Nebula::drawHints(StelPainter& sPainter, float maxMagHints)
{
	float lim = mag;
	if (lim > 50) lim = 15.f;

	// temporary workaround of this bug: https://bugs.launchpad.net/stellarium/+bug/1115035 --AW
	if (getEnglishName().contains("Pleiades"))
		lim = 5.f;
	// Dark nebulae. Not sure how to assess visibility from opacity? --GZ
	if (nType==NebDn)
	{
		// GZ: ad-hoc visibility formula: assuming good visibility if objects of mag9 are visible, "usual" opacity 5 and size 30', better visibility (discernability) comes with higher opacity and larger size,
		// 9-(opac-5)-2*(angularSize-0.5)
		if (angularSize>0 && mag<50)
			lim = 15.0f - mag - 2.0f*angularSize;
		else
			lim = 9.0f;
	}
	else if (nType==NebHII || nType==NebHa)
	{ // artificially increase visibility of (most) Sharpless objects? No magnitude recorded:-(
		lim=9.0f;
	}

	if (lim>maxMagHints)
		return;

	Vec3d win;
	// Check visibility of DSO hints
	if (!(sPainter.getProjector()->projectCheck(XYZ, win)))
		return;

	glEnable(GL_BLEND);
	glBlendFunc(GL_ONE, GL_ONE);
	float lum = 1.f;//qMin(1,4.f/getOnScreenSize(core))*0.8;
	Vec3f col(circleColor[0]*lum*hintsBrightness, circleColor[1]*lum*hintsBrightness, circleColor[2]*lum*hintsBrightness);

	sPainter.setColor(col[0], col[1], col[2], 1);
	switch (nType)
	{
		case NebGx:
			Nebula::texGalaxy->bind();
			break;
		case NebOc:
			Nebula::texOpenCluster->bind();
			break;
		case NebGc:
			Nebula::texGlobularCluster->bind();
			break;
		case NebN:
		case NebHII:
		case NebRn:
			Nebula::texDiffuseNebula->bind();
			break;
		case NebPn:
			Nebula::texPlanetaryNebula->bind();
			break;
		case NebDn:		
			Nebula::texDarkNebula->bind();
			break;		
		case NebCn:
			Nebula::texOpenClusterWithNebulosity->bind();
			break;
		default:
			Nebula::texCircle->bind();
	}

	if (drawHintProportional)
	{
		float size = getAngularSize(NULL)*M_PI/180.*sPainter.getProjector()->getPixelPerRadAtCenter();
		sPainter.drawSprite2dMode(XY[0], XY[1], qMax(6.0f,size));
	}
	else
		sPainter.drawSprite2dMode(XY[0], XY[1], 6.0f);
}