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| ** |
| ** Copyright (C) 2019 The Qt Company Ltd. |
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| ** This file is part of Qt Quick 3D. |
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| |
| #include "qquick3darealight_p.h" |
| #include "qquick3dobject_p_p.h" |
| |
| #include <QtQuick3DRuntimeRender/private/qssgrenderlight_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| /*! |
| \qmltype AreaLight |
| \inherits Light |
| \inqmlmodule QtQuick3D |
| \brief Defines an area light in the scene. |
| |
| The area light is similar to the directional light, but instead of emitting equally bright |
| light across the whole scene, the area light emits directional light from a rectangle shaped |
| object. Aside from the size, an area light has the same characteristics and properties as |
| the directional light. |
| |
| Rotating, scaling and moving actions will all effect an area light. |
| |
| \sa DirectionalLight, PointLight |
| */ |
| |
| /*! |
| * \qmlproperty real AreaLight::width |
| * |
| * This property controls the width of an Area lights rectangle. |
| * |
| */ |
| |
| /*! |
| * \qmlproperty real AreaLight::height |
| * |
| * This property controls the height of an Area lights rectangle |
| * |
| */ |
| |
| float QQuick3DAreaLight::width() const |
| { |
| return m_width; |
| } |
| |
| float QQuick3DAreaLight::height() const |
| { |
| return m_height; |
| } |
| |
| void QQuick3DAreaLight::setWidth(float width) |
| { |
| if (qFuzzyCompare(m_width, width)) |
| return; |
| |
| m_width = width; |
| m_dirtyFlags.setFlag(DirtyFlag::AreaDirty); |
| emit widthChanged(); |
| update(); |
| } |
| |
| void QQuick3DAreaLight::setHeight(float height) |
| { |
| if (qFuzzyCompare(m_height, height)) |
| return; |
| |
| m_height = height; |
| m_dirtyFlags.setFlag(DirtyFlag::AreaDirty); |
| emit heightChanged(); |
| update(); |
| } |
| |
| QSSGRenderGraphObject *QQuick3DAreaLight::updateSpatialNode(QSSGRenderGraphObject *node) |
| { |
| if (!node) { |
| markAllDirty(); |
| node = new QSSGRenderLight(); |
| QSSGRenderLight *light = static_cast<QSSGRenderLight *>(node); |
| light->m_lightType = QSSGRenderLight::Type::Area; |
| } |
| |
| QQuick3DAbstractLight::updateSpatialNode(node); |
| |
| QSSGRenderLight *light = static_cast<QSSGRenderLight *>(node); |
| |
| if (m_dirtyFlags.testFlag(DirtyFlag::AreaDirty)) { |
| m_dirtyFlags.setFlag(DirtyFlag::AreaDirty, false); |
| light->m_areaWidth = m_width; |
| light->m_areaHeight = m_height; |
| } |
| |
| return node; |
| } |
| |
| QT_END_NAMESPACE |