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Diffstat (limited to 'doc/qtdesignstudio/src/qtquick3d-editor/qtdesignstudio-3d-camera.qdoc')
| -rw-r--r-- | doc/qtdesignstudio/src/qtquick3d-editor/qtdesignstudio-3d-camera.qdoc | 33 |
1 files changed, 26 insertions, 7 deletions
diff --git a/doc/qtdesignstudio/src/qtquick3d-editor/qtdesignstudio-3d-camera.qdoc b/doc/qtdesignstudio/src/qtquick3d-editor/qtdesignstudio-3d-camera.qdoc index 202249188d..89da3cbb34 100644 --- a/doc/qtdesignstudio/src/qtquick3d-editor/qtdesignstudio-3d-camera.qdoc +++ b/doc/qtdesignstudio/src/qtquick3d-editor/qtdesignstudio-3d-camera.qdoc @@ -8,13 +8,13 @@ \title Cameras - A camera is always necessary to view the content of a 3D scene. A camera + A camera is necessary to view the content of a 3D scene. A camera defines how to project the content of a 3D scene into a 2D coordinate space, which can then be used on a 2D surface. When a camera is present in the scene, it can be used to direct what is displayed in a \l {3D Views} {3D view}. - \image studio-qtquick-3d-components.png "Qt Quick 3D components in Components" + \image studio-qtquick-3d-components.webp "Qt Quick 3D components in Components" To add a camera component to your UI, do one of the following: \list @@ -31,7 +31,7 @@ \uicontrol QtQuick3D module to your project, as described in \l {Adding and Removing Modules}. - You can use the following components in your scenes to determine camera + The following components in your scenes determine the camera projection: \list @@ -65,7 +65,7 @@ You can edit the camera properties in the \uicontrol Properties view. - \image studio-qtquick-camera-properties "Properties view for Perspective Camera" + \image studio-qtquick-camera-properties.webp "Properties view for Perspective Camera" \section1 Setting Camera Field of View @@ -73,6 +73,8 @@ when \l {Creating Projects}{creating your project}, the camera properties will be slightly different. + \note Orthographic cameras don't have the FOV property. + The camera frustum can be obtained by taking a frustum (that is, a truncation with parallel planes) of the cone of vision that a camera or eye would have to the rectangular viewports typically used in computer graphics. @@ -112,10 +114,10 @@ \note The \uicontrol {Horizontal magnification} and \uicontrol {Vertical magnification} properties are not available in Qt 5. - The \uicontrol {Frustum culling enabled} property determines whether the + The \uicontrol {Frustum culling} property determines whether the objects outside the camera frustum will be culled, which means they will not be passed to the renderer. - \note The \uicontrol {Frustum culling enabled} property is not available in + \note The \uicontrol {Frustum culling} property is not available in Qt 5. The default values are intended to cause anything within the view @@ -124,5 +126,22 @@ better results with ambient occlusion or with effects that use the depth buffer of the camera, such as the \e {depth of field} effect. - \note Orthographic cameras don't have the FOV property. + \section1 Setting a Camera to Look at an Object + + Setting the camera to look at a specific object can be useful, for example, + if you want to create a cinematic effect or have the camera follow a user-controlled object. + + To set a camera to look at an object: + + \list 1 + \li In \uicontrol Navigator, select the camera. + \li In \uicontrol Properties > \uicontrol {Look-at-Node}, select the object that + the camera should look at. + \image camera-look-at-node.webp + \endlist + + When you set a camera to look at an object, the camera automatically rotates to + point toward the assigned object, even if the object or the camera moves. The rotation only + happens around the x and y axes. + */ |