Cylindrical Camera 圆柱形照相机

The cylindrical camera is similar to the spherical camera except it can capture a user-defined horizontal and vertical FOV range.

柱面相机类似于球面相机，除了它可以捕捉用户定义的水平和垂直视场范围。

How to use

如何使用

Please use this link for information on how to turn a camera into a cylindrical camera.

请使用此链接获得如何将相机变成圆柱形相机的信息。

Parameters

参数

 

 

When using a cylindrical camera, the main camera's FOV is ignored but its aspect ratio can be used to fine-tune the effect.

使用圆柱相机时，主相机的视场被忽略，但其纵横比可以用来微调这种效果。

The cylindrical camera has its own horizontal and vertical FOV settings. Furthermore, it can optionally use an orthographic projection for the vertical axis. In that case, the vertical angle is replaced by an orthographic height. The function of this orthographic height is the same as with a regular orthographic camera.

圆柱相机有自己的水平和垂直视场设置。此外，它还可以选择使用正投影图作为垂直轴。在这种情况下，垂直角被正字法高度所代替。这种正投影高度的作用与普通正投影机相同。

To demonstrate the effect of the cylindrical camera, we'll use the following reference scene. The camera is pointing towards the green sphere. The red sphere is 90 degrees to the left of the camera and the blue sphere is 90 degrees to the right. The black sphere is exactly behind the camera.

为了演示柱面相机的效果，我们将使用下面的参考场景。照相机正对着那个绿色的球体。红色的球体在照相机左侧90度，蓝色的球体在右侧90度。黑色的球体正好在照相机的后面。

Below we show a cylindrical camera with a 180 degree FOV on both the vertical and horizontal axis. Because the horizontal and vertical FOVs are the same, we chose a 1:1 aspect ratio for this image. As it can be seen, the image is the same as the middle part of the spherical camera image shown in the previous section. If we had used 360 degrees for the horizontal FOV and 180 degrees for the vertical, the resulting image would be identical to the one of the spherical camera. In that case, we should have selected a 2:1 aspect ratio.

下面我们展示一个在垂直和水平轴上都有180度视场的圆柱形相机。因为水平和垂直视野是相同的，所以我们为这张图片选择了1:1的纵横比。正如它可以看到，图像是相同的中间部分球形相机的图像显示在上一节。如果我们使用360度的水平视场和180度的垂直，得到的图像将是相同的一个球形相机。在这种情况下，我们应该选择一个2:1的长宽比。

Below we demonstrate the effect of enabling the orthographic projection. The orthographic height was set to 60 units.

下面我们演示了启用正投影图的效果，拼字高度设置为60个单位。

The reason for the different background color is because the camera is now orthographic on the vertical axis. It's essentially 'zooming in' on the physical's sky's horizon.

背景颜色不同的原因是因为相机现在是垂直轴上的正投影。它本质上是在物理的天空的地平线上放大。