trefoilknot.cpp Example File
materials-cpp/trefoilknot.cpp/**************************************************************************** ** ** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the Qt3D module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL3$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and The Qt Company. For licensing terms ** and conditions see http://www.qt.io/terms-conditions. For further ** information use the contact form at http://www.qt.io/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 3 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPLv3 included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 3 requirements ** will be met: https://www.gnu.org/licenses/lgpl.html. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 2.0 or later as published by the Free ** Software Foundation and appearing in the file LICENSE.GPL included in ** the packaging of this file. Please review the following information to ** ensure the GNU General Public License version 2.0 requirements will be ** met: http://www.gnu.org/licenses/gpl-2.0.html. ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "trefoilknot.h" TrefoilKnot::TrefoilKnot(Qt3DCore::QNode *parent) : Qt3DCore::QEntity(parent) , m_mesh(new Qt3DRender::QMesh()) , m_transform(new Qt3DCore::QTransform()) , m_position() , m_scale(1.0f) { m_mesh->setSource(QUrl("qrc:/assets/obj/trefoil.obj")); addComponent(m_mesh); addComponent(m_transform); } TrefoilKnot::~TrefoilKnot() { } void TrefoilKnot::updateTransform() { QMatrix4x4 m; m.translate(m_position); m.rotate(m_phi, QVector3D(1.0f, 0.0f, 0.0f)); m.rotate(m_phi, QVector3D(0.0f, 1.0f, 0.0f)); m.scale(m_scale); m_transform->setMatrix(m); } float TrefoilKnot::theta() const { return m_theta; } float TrefoilKnot::phi() const { return m_phi; } QVector3D TrefoilKnot::position() const { return m_position; } float TrefoilKnot::scale() const { return m_scale; } void TrefoilKnot::setTheta(float theta) { if (m_theta == theta) return; m_theta = theta; emit thetaChanged(theta); updateTransform(); } void TrefoilKnot::setPhi(float phi) { if (m_phi == phi) return; m_phi = phi; emit phiChanged(phi); updateTransform(); } void TrefoilKnot::setPosition(QVector3D position) { if (m_position == position) return; m_position = position; emit positionChanged(position); updateTransform(); } void TrefoilKnot::setScale(float scale) { if (m_scale == scale) return; m_scale = scale; emit scaleChanged(scale); updateTransform(); }