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如何更改 Qt3D 中的灯光设置？

我认为它应该是框架图的一部分，但是标准转发器中没有任何与灯光设置相关的方法。

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2 回答 2

9

Where rootEntity is parent of all other entities on your scene.

Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity(rootEntity);
Qt3DRender::QPointLight *light = new Qt3DRender::QPointLight(lightEntity);
light->setColor("white");
light->setIntensity(1.);
lightEntity->addComponent(light);
于 2017-12-27T11:44:10.797 回答
1

据我记得没有直接的灯光设置。

你要做的是创造一个聚光灯并调整它。

来自 Qt3D 示例：

/****************************************************************************
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import Qt3D 2.0
import Qt3D.Renderer 2.0

Entity {
    id: root

    property vector3d lightPosition: Qt.vector3d(30.0, 30.0, 0.0)
    property vector3d lightIntensity: Qt.vector3d(1.0, 1.0, 1.0)

    readonly property Camera lightCamera: lightCamera
    readonly property matrix4x4 lightViewProjection: lightCamera.projectionMatrix.times(lightCamera.matrix)

    Camera {
        id: lightCamera
        objectName: "lightCameraLens"
        projectionType: CameraLens.PerspectiveProjection
        fieldOfView: 45
        aspectRatio: 1
        nearPlane : 0.1
        farPlane : 200.0
        position: root.lightPosition
        viewCenter: Qt.vector3d(0.0, 0.0, 0.0)
        upVector: Qt.vector3d(0.0, 1.0, 0.0)
    }
}

光影的完整示例

除此之外还有QDirectionalLight和QPointLight。

于 2016-09-09T00:35:48.867 回答