GuidelineProjectorConstantR Class Reference

Project a point along the tangential direction in graph coordinates to produce a curve along the constant-range direction, passing through a specified point. More...

#include <GuidelineProjectorConstantR.h>

Inheritance diagram for GuidelineProjectorConstantR:

Collaboration diagram for GuidelineProjectorConstantR:

Public Member Functions
	GuidelineProjectorConstantR ()
	Single constructor.
	~GuidelineProjectorConstantR ()
EllipseParameters	fromCoordinateR (const Transformation &transformation, const QRectF &sceneRect, double rGraph)
	Return line through y in graph coordinates.
EllipseParameters	fromPosScreen (const Transformation &transformation, const QRectF &sceneRect, const QPointF &posScreen)
	Return line through point in screen coordinates.
Public Member Functions inherited from GuidelineProjectorAbstract
	GuidelineProjectorAbstract ()
	Single constructor.
	~GuidelineProjectorAbstract ()

Additional Inherited Members
Protected Member Functions inherited from GuidelineProjectorAbstract
void	calculateCorners (const Transformation &transformation, const QRectF &sceneRect, QPointF &posGraphBL, QPointF &posGraphTL, QPointF &posGraphTR, QPointF &posGraphBR) const
	Conpute four corners of scene in graph coordinates.
bool	isOutside (const QRectF &sceneRect, const QPointF &posScreen) const
	Return true if point is outside of the scene.

Detailed Description

Project a point along the tangential direction in graph coordinates to produce a curve along the constant-range direction, passing through a specified point.

Definition at line 21 of file GuidelineProjectorConstantR.h.

Constructor & Destructor Documentation

GuidelineProjectorConstantR()

GuidelineProjectorConstantR::GuidelineProjectorConstantR

(

)

Single constructor.

Definition at line 17 of file GuidelineProjectorConstantR.cpp.

{
}

~GuidelineProjectorConstantR()

GuidelineProjectorConstantR::~GuidelineProjectorConstantR

(

)

Definition at line 21 of file GuidelineProjectorConstantR.cpp.

{
}

Member Function Documentation

fromCoordinateR()

EllipseParameters GuidelineProjectorConstantR::fromCoordinateR	(	const Transformation &	transformation,
		const QRectF &	sceneRect,
		double	rGraph )

Return line through y in graph coordinates.

Definition at line 25 of file GuidelineProjectorConstantR.cpp.

{
  QPointF posGraphCenter (0, 0);
  if (transformation.modelCoords().coordScaleYRadius() == COORD_SCALE_LOG) {
    posGraphCenter = QPointF (0,
                              transformation.modelCoords().originRadius());
  }
 
  // Points at 45, 135, 225 and 315 degrees at range rGraph
  QPointF posScreenOrigin, posScreen0, posScreen90, posScreen180;
  transformation.transformRawGraphToScreen (posGraphCenter,
                                            posScreenOrigin);
  transformation.transformRawGraphToScreen (QPointF (0, rGraph),
                                            posScreen0);
  transformation.transformRawGraphToScreen (QPointF (90, rGraph),
                                            posScreen90);
  transformation.transformRawGraphToScreen (QPointF (180, rGraph),
                                            posScreen180);
 
  QPointF centerTo90 = posScreen90 - posScreenOrigin;
 
  // Corners of parallelogram circumscribing the ellipse
  QPointF posScreenTL = posScreen180 + centerTo90;
  QPointF posScreenTR = posScreen0 + centerTo90;
  QPointF posScreenBR = posScreen0 - centerTo90;
 
  double angleRadians = 0, aAligned = 0, bAligned = 0;
  ellipseFromParallelogram (posScreenTL.x() - posScreenOrigin.x(),
                            posScreenTL.y() - posScreenOrigin.y(),
                            posScreenTR.x() - posScreenOrigin.x(),
                            posScreenTR.y() - posScreenOrigin.y(),
                            posScreenBR.x() - posScreenOrigin.x(),
                            posScreenBR.y() - posScreenOrigin.y(),
                            angleRadians,
                            aAligned,
                            bAligned);
 
  return EllipseParameters (posScreenOrigin,
                            angleRadians,
                            aAligned,
                            bAligned);
}

fromPosScreen()

EllipseParameters GuidelineProjectorConstantR::fromPosScreen	(	const Transformation &	transformation,
		const QRectF &	sceneRect,
		const QPointF &	posScreen )

Return line through point in screen coordinates.

Definition at line 70 of file GuidelineProjectorConstantR.cpp.

{
  QPointF posGraph;
  transformation.transformScreenToRawGraph (posScreen,  posGraph);
 
  double rGraph = posGraph.y();
 
  if ((transformation.modelCoords().coordScaleYRadius() == COORD_SCALE_LOG) &&
      (rGraph <= 0)) {
 
      // Range enforcement on the range values with log scale should have prevented this branch
      LOG4CPP_ERROR_S ((*mainCat)) << "GuidelineProjectorConstantR::fromPosScreen out of bounds range " << rGraph;
 
  }
 
  return fromCoordinateR (transformation,
                          sceneRect,
                          rGraph);
}

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The documentation for this class was generated from the following files:

• Guideline/GuidelineProjectorConstantR.h
• Guideline/GuidelineProjectorConstantR.cpp