boxentity.cpp Example File

dynamicscene-cpp/boxentity.cpp

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  #include "boxentity.h"

  #include <qmath.h>

  BoxEntity::BoxEntity(QNode *parent)
      : Qt3DCore::QEntity(parent)
      , m_transform(new Qt3DCore::QTransform())
      , m_mesh(new Qt3DRender::QCuboidMesh())
      , m_material(new Qt3DRender::QPhongMaterial())
      , m_angle(0.0f)
      , m_radius(1.0f)
  {
      connect(m_material, SIGNAL(diffuseChanged(const QColor &)),
              this, SIGNAL(diffuseColorChanged(const QColor &)));
      m_material->setAmbient(Qt::gray);
      m_material->setSpecular(Qt::white);
      m_material->setShininess(150.0f);

      addComponent(m_transform);
      addComponent(m_mesh);
      addComponent(m_material);
  }

  void BoxEntity::setDiffuseColor(const QColor &diffuseColor)
  {
      m_material->setDiffuse(diffuseColor);
  }

  void BoxEntity::setAngle(float arg)
  {
      if (m_angle == arg)
          return;

      m_angle = arg;
      emit angleChanged();
      updateTransformation();
  }

  void BoxEntity::setRadius(float arg)
  {
      if (m_radius == arg)
          return;

      m_radius = arg;
      emit radiusChanged();
      updateTransformation();
  }

  QColor BoxEntity::diffuseColor()
  {
      return m_material->diffuse();
  }

  float BoxEntity::angle() const
  {
      return m_angle;
  }

  float BoxEntity::radius() const
  {
      return m_radius;
  }

  void BoxEntity::updateTransformation()
  {
      m_transform->setTranslation(QVector3D(qCos(m_angle) * m_radius,
                                            1.0f,
                                            qSin(m_angle) * m_radius));
  }