qt3d/examples/dynamicscene-cpp/boxentity.cpp

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** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
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#include "boxentity.h"

#include <qmath.h>

BoxEntity::BoxEntity(QNode *parent)
    : Qt3D::QEntity(parent)
    , m_transform(new Qt3D::QTransform())
    , m_translate(new Qt3D::QTranslateTransform())
    , m_mesh(new Qt3D::QCuboidMesh())
    , m_material(new Qt3D::QPhongMaterial())
    , m_angle(0.0f)
    , m_radius(1.0f)
{
    m_transform->addTransform(m_translate);

    connect(m_material, SIGNAL(diffuseChanged()), this, SIGNAL(diffuseColorChanged()));
    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_translate->setTranslation(QVector3D(cosf(m_angle) * m_radius,
                                          1.0f,
                                          sinf(m_angle) * m_radius));
}