Move QCamera/QCameraLens to Qt3DRender

Also get rid of Qt3DRender::QWindow and of the hard codes camera
controller.

Change-Id: I307735d01caf97b7a690b28de8dc99fc9866c35f
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 476 insertions, 0 deletions

diff --git a/src/render/frontend/qcameralens.cpp b/src/render/frontend/qcameralens.cpp
new file mode 100644
index 000000000..3eb9619ec
--- /dev/null
+++ b/src/render/frontend/qcameralens.cpp
@@ -0,0 +1,476 @@
+/****************************************************************************
+**
+** 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 "qcameralens.h"
+#include "qcameralens_p.h"
+
+QT_BEGIN_NAMESPACE
+
+namespace Qt3DRender {
+
+/*!
+    \class Qt3DRender::QCameraLensPrivate
+    \internal
+*/
+QCameraLensPrivate::QCameraLensPrivate()
+    : Qt3DCore::QComponentPrivate()
+    , m_projectionType(QCameraLens::OrthographicProjection)
+    , m_nearPlane(0.1f)
+    , m_farPlane(1024.0f)
+    , m_fieldOfView(25.0f)
+    , m_aspectRatio(1.0f)
+    , m_left(-0.5f)
+    , m_right(0.5f)
+    , m_bottom(-0.5f)
+    , m_top(0.5f)
+{
+}
+
+QCameraLens::QCameraLens(QNode *parent)
+    : Qt3DCore::QComponent(*new QCameraLensPrivate, parent)
+{
+    Q_D(QCameraLens);
+    d->updateProjectionMatrix();
+}
+
+QCameraLens::~QCameraLens()
+{
+    QNode::cleanup();
+}
+
+void QCameraLens::copy(const QNode *ref)
+{
+    QComponent::copy(ref);
+    const QCameraLens *lens = static_cast<const QCameraLens*>(ref);
+    d_func()->m_projectionType = lens->d_func()->m_projectionType;
+    d_func()->m_nearPlane = lens->d_func()->m_nearPlane;
+    d_func()->m_farPlane = lens->d_func()->m_farPlane;
+    d_func()->m_fieldOfView = lens->d_func()->m_fieldOfView;
+    d_func()->m_aspectRatio = lens->d_func()->m_aspectRatio;
+    d_func()->m_left = lens->d_func()->m_left;
+    d_func()->m_right = lens->d_func()->m_right;
+    d_func()->m_bottom = lens->d_func()->m_bottom;
+    d_func()->m_top = lens->d_func()->m_top;
+    d_func()->m_projectionMatrix = lens->d_func()->m_projectionMatrix;
+}
+
+/*! \class Qt3DRender::QCameraLens
+ *  \inmodule Qt3DCore
+ *
+ * \brief Qt3DRender::QCameraLens specifies the projection matrix that will be used to
+ * define a Camera for a 3D scene.
+ *
+ *  \since 5.5
+ */
+QCameraLens::QCameraLens(QCameraLensPrivate &dd, QNode *parent)
+    : QComponent(dd, parent)
+{
+    Q_D(QCameraLens);
+    d->updateOrthographicProjection();
+}
+
+/*!
+ * Sets the lens' projection type \a projectionType.
+ *
+ * \note Qt3DRender::QCameraLens::Frustum and
+ * Qt3DRender::QCameraLens::PerspectiveProjection are two different ways of
+ * specifying the same projection.
+ */
+void QCameraLens::setProjectionType(QCameraLens::ProjectionType projectionType)
+{
+    Q_D(QCameraLens);
+    if (d->m_projectionType != projectionType) {
+        d->m_projectionType = projectionType;
+        emit projectionTypeChanged(projectionType);
+        d->updateProjectionMatrix();
+    }
+}
+
+/*!
+ * Returns the lens' projection type.
+ */
+QCameraLens::ProjectionType QCameraLens::projectionType() const
+{
+    Q_D(const QCameraLens);
+    return d->m_projectionType;
+}
+
+/*!
+ * Defines an orthographic projection based on \a left, \a right, \a bottom, \a
+ * top, \a nearPlane, \a farPlane.
+ */
+void QCameraLens::setOrthographicProjection(float left, float right,
+                                            float bottom, float top,
+                                            float nearPlane, float farPlane)
+{
+    Q_D(QCameraLens);
+    bool block = blockNotifications(true);
+    setLeft(left);
+    setRight(right);
+    setBottom(bottom);
+    setTop(top);
+    setNearPlane(nearPlane);
+    setFarPlane(farPlane);
+    setProjectionType(OrthographicProjection);
+    blockNotifications(block);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Defines an orthographic projection based on \a left, \a right, \a bottom, \a
+ * top, \a nearPlane, \a farPlane.
+ */
+void QCameraLens::setFrustumProjection(float left, float right,
+                                       float bottom, float top,
+                                       float nearPlane, float farPlane)
+{
+    Q_D(QCameraLens);
+    bool block = blockNotifications(true);
+    setLeft(left);
+    setRight(right);
+    setBottom(bottom);
+    setTop(top);
+    setNearPlane(nearPlane);
+    setFarPlane(farPlane);
+    setProjectionType(FrustumProjection);
+    blockNotifications(block);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Defines a perspective projection based on \a fieldOfView, \a aspectRatio, \a
+ * nearPlane, \a farPlane.
+ */
+void QCameraLens::setPerspectiveProjection(float fieldOfView, float aspectRatio,
+                                           float nearPlane, float farPlane)
+{
+    Q_D(QCameraLens);
+    bool block = blockNotifications(true);
+    setFieldOfView(fieldOfView);
+    setAspectRatio(aspectRatio);
+    setNearPlane(nearPlane);
+    setFarPlane(farPlane);
+    setProjectionType(PerspectiveProjection);
+    blockNotifications(block);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Sets the projection's near plane to \a nearPlane. This triggers a projection
+ * matrix update.
+ */
+void QCameraLens::setNearPlane(float nearPlane)
+{
+    Q_D(QCameraLens);
+    if (qFuzzyCompare(d->m_nearPlane, nearPlane))
+        return;
+    d->m_nearPlane = nearPlane;
+    emit nearPlaneChanged(nearPlane);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Returns the projection's near plane.
+ */
+float QCameraLens::nearPlane() const
+{
+    Q_D(const QCameraLens);
+    return d->m_nearPlane;
+}
+
+/*!
+ * Sets the projection's far plane to \a farPlane. This triggers a projection
+ * matrix update.
+ */
+void QCameraLens::setFarPlane(float farPlane)
+{
+    Q_D(QCameraLens);
+    if (qFuzzyCompare(d->m_farPlane, farPlane))
+        return;
+    d->m_farPlane = farPlane;
+    emit farPlaneChanged(farPlane);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Returns the projection's far plane.
+ */
+float QCameraLens::farPlane() const
+{
+    Q_D(const QCameraLens);
+    return d->m_farPlane;
+}
+
+/*!
+ * Sets the projection's field of view to \a fieldOfView degrees. This triggers
+ * a projection matrix update.
+ *
+ * \note this has no effect if the projection type is not
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+void QCameraLens::setFieldOfView(float fieldOfView)
+{
+    Q_D(QCameraLens);
+    if (qFuzzyCompare(d->m_fieldOfView, fieldOfView))
+        return;
+    d->m_fieldOfView = fieldOfView;
+    emit fieldOfViewChanged(fieldOfView);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Returns the projection's field of view in degrees.
+ *
+ * \note: The return value may be undefined if the projection type is not
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+float QCameraLens::fieldOfView() const
+{
+    Q_D(const QCameraLens);
+    return d->m_fieldOfView;
+}
+
+/*!
+ * Sets the projection's aspect ratio to \a aspectRatio. This triggers a projection
+ * matrix update.
+ *
+ * \note this has no effect if the projection type is not
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+void QCameraLens::setAspectRatio(float aspectRatio)
+{
+    Q_D(QCameraLens);
+    if (qFuzzyCompare(d->m_aspectRatio, aspectRatio))
+        return;
+    d->m_aspectRatio = aspectRatio;
+    emit aspectRatioChanged(aspectRatio);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Returns the projection's aspect ratio.
+ *
+ * \note: The return value may be undefined if the projection type is not
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+float QCameraLens::aspectRatio() const
+{
+    Q_D(const QCameraLens);
+    return d->m_aspectRatio;
+}
+
+/*!
+ * Sets the projection's lower left window coordinate to \a left. This
+ * triggers a projection matrix update.
+ *
+ * \note this has no effect if the projection type is
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+void QCameraLens::setLeft(float left)
+{
+    Q_D(QCameraLens);
+    if (qFuzzyCompare(d->m_left, left))
+        return;
+    d->m_left = left;
+    emit leftChanged(left);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Returns the lower left window coordinate of the projection.
+ *
+ * \note The return value may be undefined if the projection type is
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+float QCameraLens::left() const
+{
+    Q_D(const QCameraLens);
+    return d->m_left;
+}
+
+/*!
+ * Sets the projection's upper right window coordinate to \a right. This triggers
+ * a projection matrix update.
+ *
+ * \note this has no effect if the projection type is
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+void QCameraLens::setRight(float right)
+{
+    Q_D(QCameraLens);
+    if (qFuzzyCompare(d->m_right, right))
+        return;
+    d->m_right = right;
+    emit rightChanged(right);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Returns the upper right window coordinate of the projection.
+ *
+ * \note The return value may be undefined if the projection type is
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+float QCameraLens::right() const
+{
+    Q_D(const QCameraLens);
+    return d->m_right;
+}
+
+/*!
+ * Sets the projection's bottom window coordinate to \a bottom. This triggers a
+ * projection matrix update.
+ *
+ * \note this has no effect if the projection type is
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+void QCameraLens::setBottom(float bottom)
+{
+    Q_D(QCameraLens);
+    if (qFuzzyCompare(d->m_bottom, bottom))
+        return;
+    d->m_bottom = bottom;
+    emit bottomChanged(bottom);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Returns the bottom window coordinate of the projection.
+ *
+ * \note The return value may be undefined if the projection type is
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+float QCameraLens::bottom() const
+{
+    Q_D(const QCameraLens);
+    return d->m_bottom;
+}
+
+/*!
+ * Sets the projection's top window coordinate to \a top. This triggers a
+ * projection matrix update.
+ *
+ * \note this has no effect if the projection type is
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+void QCameraLens::setTop(float top)
+{
+    Q_D(QCameraLens);
+    if (qFuzzyCompare(d->m_top, top))
+        return;
+    d->m_top = top;
+    emit topChanged(top);
+    d->updateProjectionMatrix();
+}
+
+/*!
+ * Returns the bottom window coordinate of the projection.
+ *
+ * \note The return value may be undefined if the projection type is
+ * Qt3DRender::QCameraLens::PerspectiveProjection.
+ */
+float QCameraLens::top() const
+{
+    Q_D(const QCameraLens);
+    return d->m_top;
+}
+
+/*!
+ * Returns the projection matrix.
+ */
+QMatrix4x4 QCameraLens::projectionMatrix() const
+{
+    Q_D(const QCameraLens);
+    return d->m_projectionMatrix;
+}
+
+} // Qt3DRender
+
+/*!
+    \qmltype CameraLens
+    \instantiates Qt3DRender::QCameraLens
+    \inqmlmodule Qt3D.Core
+    \inherits Component3D
+    \since 5.5
+*/
+
+/*!
+    \qmlproperty enumeration Qt3DCore::CameraLens::projectionType
+
+    Holds the type of the camera projection (orthogonal or perspective).
+
+    \value CameraLens.OrthographicProjection Orthogonal projection
+    \value CameraLens.PerspectiveProjection Perspective projection
+*/
+
+/*!
+    \qmlproperty float Qt3DCore::CameraLens::nearPlane
+*/
+
+/*!
+    \qmlproperty float Qt3DCore::CameraLens::farPlane
+*/
+
+/*!
+    \qmlproperty float Qt3DCore::CameraLens::fieldOfView
+*/
+
+/*!
+    \qmlproperty float Qt3DCore::CameraLens::aspectRatio
+*/
+
+/*!
+    \qmlproperty float Qt3DCore::CameraLens::left
+*/
+
+/*!
+    \qmlproperty float Qt3DCore::CameraLens::right
+*/
+
+/*!
+    \qmlproperty float Qt3DCore::CameraLens::bottom
+*/
+
+/*!
+    \qmlproperty float Qt3DCore::CameraLens::top
+*/
+
+/*!
+    \qmlproperty matrix4x4 Qt3DCore::CameraLens::projectionMatrix
+    \readonly
+*/
+
+QT_END_NAMESPACE