Defines a view point through which the scene will be rendered. 更多...
| import 语句： | import Qt3D.Render 2.12 |
| Since: | Qt 5.5 |
| 实例化： | QCamera |
| 继承： | Entity |
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aspectRatio : real |
Holds the current aspect ratio of the camera.
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bottom : real |
Holds the current bottom of the camera.
This property is only relevant when projectionType is CameraLens .OrthographicProjection.
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exposure : real |
Holds the current exposure of the camera.
The default value is 0.0.
The MetalRoughMaterial in Qt 3D Extras is currently the only provided material that makes use of camera exposure. Negative values will cause the material to be darker, and positive values will cause it to be lighter.
Custom materials may choose to interpret the value differently.
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farPlane : real |
Holds the current camera far plane of the camera. Objects that are farther from the camera than the farPlane will not be rendered.
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fieldOfView : real |
Holds the current vertical field of view of the camera in degrees.
Along with aspectRatio , this property determines how much of the scene is visible to the camera. In that respect you might think of it as analogous to choosing a wide angle (wide horizontal field of view) or telephoto (narrow horizontal field of view) lens, depending on how much of a scene you want to capture.
fieldOfView is only relevant when projectionType is CameraLens .PerspectiveProjection.
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left : real |
Holds the current left of the camera.
This property is only relevant when projectionType is CameraLens .OrthographicProjection.
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nearPlane : real |
Holds the current camera near plane of the camera. Objects that are closer to the camera than the nearPlane will not be rendered.
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position : vector3d |
Holds the current position of the camera in coordinates relative to the parent entity.
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projectionMatrix : matrix4x4 |
Holds the current projection matrix of the camera.
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projectionType : enumeration |
Holds the type of the camera projection. The default value is CameraLens .PerspectiveProjection.
另请参阅 Qt3DRender::QCameraLens::ProjectionType .
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right : real |
Holds the current right of the camera.
This property is only relevant when projectionType is CameraLens .OrthographicProjection.
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top : real |
Holds the current top of the camera.
This property is only relevant when projectionType is CameraLens .OrthographicProjection.
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upVector : vector3d |
Holds the current up vector of the camera in coordinates relative to the parent entity.
The up vector indicates which direction the top of the camera is facing. Think of taking a picture: after positioning yourself and pointing the camera at your target, you might rotate the camera left or right, giving you a portrait or landscape (or angled!) shot. upVector allows you to control this type of movement.
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viewCenter : vector3d |
Holds the current view center of the camera in coordinates relative to the parent entity.
Intuitively, the viewCenter is the location the camera is pointing at.
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[read-only] viewVector : vector3d |
Holds the camera's view vector in coordinates relative to the parent entity.
This vector decribes the displacement from the camera ( position ) to its target ( viewCenter ).
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void pan ( real angle ) |
Adjusts the pan angle of the camera by angle in degrees.
Adjusts the camera pan about view center by angle in degrees on axis .
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void panAboutViewCenter ( real angle ) |
Adjusts the camera pan about view center by angle in degrees.
Adjusts the camera pan about view center by angle in degrees on axis .
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quaternion panRotation ( real angle ) |
Returns the calculated pan rotation in relation to the angle in degrees taken in to adjust the camera's pan or left/right rotation on the Y axis.
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void roll ( real angle ) |
Adjusts the camera roll by angle in degrees.
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void rollAboutViewCenter ( real angle ) |
Adjusts the camera roll about view center by angle in degrees.
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quaternion rollRotation ( real angle ) |
Returns the calculated roll rotation in relation to the angle in degrees taken in to adjust the camera's roll or lean left/right rotation on the Z axis.
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void rotate ( quaternion q ) |
Rotates the camera with the use of a Quaternion in q .
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void rotateAboutViewCenter ( quaternion q ) |
Rotates the camera about the view center with the use of a Quaternion in q .
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quaternion rotation ( real angle , vector3d axis ) |
Returns the calculated rotation in relation to the angle in degrees and chosen axis taken in.
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void tilt ( real angle ) |
Adjusts the tilt angle of the camera by angle in degrees.
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void tiltAboutViewCenter ( real angle ) |
Adjusts the camera tilt about view center by angle in degrees.
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quaternion tiltRotation ( real angle ) |
Returns the calculated tilt rotation in relation to the angle in degrees taken in to adjust the camera's tilt or up/down rotation on the X axis.
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void translate ( vector3d vLocal , enumeration option ) |
Translates the camera's position and its view vector by vLocal in local coordinates. The option allows for toggling whether the view center should be translated.
另请参阅 Qt3DRender::QCamera::CameraTranslationOption .
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void translateWorld ( vector3d vWorld , enumeration option ) |
Translates the camera's position and its view vector by vWorld in world coordinates. The option allows for toggling whether the view center should be translated.
另请参阅 Qt3DRender::QCamera::CameraTranslationOption .
Rotates and moves the camera so that it's viewCenter is the center of the scene's bounding volume and the entire scene fits in the view port.
注意： Only works if the lens is in perspective projection mode.
另请参阅 Qt3D.Render::Camera::projectionType .
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void viewEntity ( Entity entity ) |
Rotates and moves the camera so that it's viewCenter is the center of the entity's bounding volume and the entire entity fits in the view port.
注意： Only works if the lens is in perspective projection mode.
另请参阅 Qt3D.Render::Camera::projectionType .
Rotates and moves the camera so that it's viewCenter is center and a sphere of radius fits in the view port.
注意： Only works if the lens is in perspective projection mode.
