SoView2DArrowHeadSettings.h

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/*************************************************************************************
**
** Copyright 2016, MeVis Medical Solutions AG
**
** The user may use this file in accordance with the license agreement provided with
** the Software or, alternatively, in accordance with the terms contained in a
** written agreement between the user and MeVis Medical Solutions AG.
**
** For further information use the contact form at https://www.mevislab.de/contact
**
**************************************************************************************/
 
#pragma once
 
#include "SoView2DSystem.h"
 
#include <Inventor/nodes/SoSubNode.h>
#include <Inventor/fields/SoSFBool.h>
#include <Inventor/fields/SoSFEnum.h>
#include <Inventor/fields/SoSFFloat.h>
#include <Inventor/sensors/SoNodeSensor.h>
 
#include <SoSFMLBase.h>
#include <mlBase.h>
#include <mlModuleIncludes.h>
 
 
 
class SoView2DArrowHeadSettings;
 
namespace ml {
  class SOVIEW2D_API ArrowHeadSettings : public Base
  {
  public:
    ArrowHeadSettings();
 
    void setRenderer(SoView2DArrowHeadSettings* renderer);
 
    void renderArrowHead(const SbVec2f& deviceStart, const SbVec2f& deviceEnd, bool isEndArrow=true);
 
  private:
    SoView2DArrowHeadSettings* _renderer;
 
    ML_CLASS_HEADER(ArrowHeadSettings)
  };
}
 
 
enum ArrowRenderingStyle
{
  RENDERING_STYLE_NONE = 0,
  RENDERING_STYLE_LINES,
  RENDERING_STYLE_TRIANGLE,
  RENDERING_STYLE_FILLED_TRIANGLE
};
 
enum ArrowDirectionMode
{
  DIRECTION_MODE_STANDARD = 0,
  DIRECTION_MODE_REVERSE,
  DIRECTION_MODE_AUTOMATIC
};
 
class SOVIEW2D_API SoView2DArrowHeadSettings : public SoNode
{
public:
  SoView2DArrowHeadSettings();
  ~SoView2DArrowHeadSettings() override;
 
  static void initClass();
 
  SoSFMLBase outArrowHeadSettings;
 
  SoSFBool useEndSettingsForStartArrowHead;
 
  SoSFFloat endSize;
  SoSFFloat endAngleFactor;
  SoSFTypedEnum<ArrowRenderingStyle> endRenderingStyle;
  SoSFTypedEnum<ArrowDirectionMode> endDirection;
  SoSFFloat endDirectionAutomaticLengthThreshold;
 
  SoSFFloat startSize;
  SoSFFloat startAngleFactor;
  SoSFTypedEnum<ArrowRenderingStyle> startRenderingStyle;
  SoSFTypedEnum<ArrowDirectionMode> startDirection;
  SoSFFloat startDirectionAutomaticLengthThreshold;
 
  void renderArrowHead(const SbVec2f& deviceFrom, const SbVec2f& deviceTo, bool isEndArrow);
 
private:
 
  void renderAsLines(const SbVec2f& deviceTo, const SbVec2f& arrow1, const SbVec2f& arrow2) const;
  void renderAsTriangle(const SbVec2f& deviceTo, const SbVec2f& arrow1, const SbVec2f& arrow2) const;
  void renderAsFilledTriangle(const SbVec2f& deviceTo, const SbVec2f& arrow1, const SbVec2f& arrow2) const;
 
  bool useEndSettings(bool isEndArrow) const;
  float getAngleFactor(float vectorLengthInPixel, bool isEndArrow) const;
  float getAngleFactor(bool isEndArrow) const;
  float getSize(bool isEndArrow) const;
  ArrowRenderingStyle getRenderingStyle(bool isEndArrow) const;
  ArrowDirectionMode getDirectionMode(bool isEndArrow) const;
  float getDirectionAutomaticLengthThreshold(bool isEndArrow) const;
 
  ml::ArrowHeadSettings arrowHeadSettings;
 
  static void fieldChangedCB(void *data, SoSensor *sensor);
  SoNodeSensor* _nodeSensor;
 
  SO_NODE_HEADER(SoView2DArrowHeadSettings);
};