使用Projection插件进行投影

The number of control points along the grid horizontal and vertical axes. A 2 x 2 grid is used by default.沿网格水平轴和垂直轴的控制点数。默认情况下使用2 x 2网格。

注意

The maximum grid size is 32 x 32.最大网格大小为32 x 32。

Visual editor enables you to set up warping for the selected projection using control points and yellow handles. These handles are displayed for each selected control point depending on its type.可视编辑器使您可以使用控制点和黄色手柄为选定的投影设置变形。这些句柄针对每个选定的控制点显示，具体取决于其类型。

You can select control points by clicking the mouse, and also switch between them using arrow keys.您可以通过单击鼠标来选择控制点，也可以使用箭头键在控制点之间进行切换。

Multi-selection using the mouse is performed as a common selection of multiple objects; to add or remove points from the selected group, click on them holding the Ctrl key. Multi-selection using the keyboard is possible in a chain-like way using arrow keys with the Shift key pressed.使用鼠标进行的多重选择是对多个对象的共同选择。要在选定组中添加或删除点，请按住Ctrl键单击它们。可以使用箭头键并按下Shift键以链状方式使用键盘进行多选。

The Ctrl + Z / Ctrl + Y combinations are used for the Undo / Redo actions. Shift + Ctrl + Z cancels all transformations.Ctrl + Z / Ctrl + Y组合用于Undo / Redo操作。 Shift + Ctrl + Z取消所有转换。

注意

Points are always moved in the screen-space coordinates regardless of image orientation (whether it is flipped or not), this means if you press left arrow, the point always goes left.无论图像的方向如何（无论是否翻转），点总是在屏幕空间坐标中移动，这意味着如果按向左箭头，则该点总是向左移动。

• Drag control points and their yellow handles to warp the projection and adjust it for the required configuration. You can also move points using arrow keys with the Ctrl key pressed.拖动控制点及其黄色手柄以使投影变形并针对所需的配置进行调整。您也可以在按下Ctrl键的情况下使用箭头键移动点。

  

  You can see an example of a warped grid and a corresponding projection image below.您可以在下面看到翘曲网格的示例和相应的投影图像。

  

  Warped grid扭曲的网格

  

  Warped image图像变形

• You can fine-tune projection warping by adjusting the parameters of each control point by selecting it and changing parameters via the following panel next to grid resolution settings:您可以通过选择每个控制点的参数并通过网格分辨率设置旁边的以下面板更改参数来微调投影变形：

  

  The following parameters are available:以下参数可用：

  • Point — horizontal and vertical indices of the selected control point. Enumeration starts from the bottom left corner.Point —所选控制点的水平和垂直索引。枚举从左下角开始。

  • Position — coordinates of the selected control point along the X and Y axes.Position —所选控制点沿X和Y轴的坐标。

    

    Coordinates for control points控制点的坐标

  • Type — warping type for the selected control point:Type —选定控制点的变形类型：

    • — automatic linear interpolation (no control handles available) —自动线性插值（无控制手柄）
    • — symmetric control handles for smooth curves —平滑曲线的对称控制手柄
    • — asymmetric control handles (you can control each handle independently)-非对称控制手柄（您可以独立控制每个手柄）
    • — automatic smooth curve (no control handles available)-自动平滑曲线（无控制手柄）

The grid itself can also be moved inside the view space:网格本身也可以在视图空间内移动：

• Middle Mouse Button for panning (dragging the grid vertically or horizontally)鼠标中键进行平移（垂直或水平拖动网格）
• Mouse Scroll for zooming in and out鼠标滚动可放大和缩小
• button to undo all panning and zooming actions and make the grid fit the window按钮可撤消所有平移和缩放操作并使网格适合窗口

Configure the canvas for the selected projection: set rotation angle and enable vertical and horizontal flipping.为选定的投影配置画布：设置旋转角度并启用垂直和水平翻转。

Per-channel color multiplier to control the intensity of:每通道色彩乘法器可控制以下强度：

• Red
• Green
• Blue
• RGB at once

Brightness for the red channel = 2红色通道的亮度= 2

Settings that allow you to adjust the color balance per channel (as well as for all channels at once):允许您调整每个通道（以及一次所有通道）的色彩平衡的设置：

• Positive values are added to the color values on the screen.正值将添加到屏幕上的颜色值。
• Negative values are subtracted from color values on the screen.从屏幕上的颜色值中减去负值。

Contrast for the red channel = -0.1红色通道的对比度= -0.1

Manages blending in the selected area. The screen-space blend area is not affected by warping.管理选定区域中的混合。屏幕空间混合区域不受扭曲的影响。

To select the area, click Add to start creating the blending area, and in the grid, click to define one side of the area, then click to define the other side — the green line will appear. The third click shows the blending direction.要选择该区域，请单击Add以开始创建混合区域，然后在网格中单击以定义该区域的一侧，然后单击以定义另一侧-将会出现绿线。第三次单击显示混合方向。

The area of the screen-space blend area is divided into two parts: the part between the blue and green lines is a solid-black area, and the part between the green and red lines is a gradient area.屏幕空间混合区域的区域分为两部分：蓝线和绿线之间的部分是纯黑色区域，绿线和红线之间的部分是渐变区域。

By default, each of these lines has two points marking the line limits. Using Resolution, you can increase the number of points along each line to adjust it as required by moving the points. Multi-selection of points is available.默认情况下，这些线中的每条线都有两个标记线限制的点。使用解析度，您可以增加每条线上的点数以通过移动点来根据需要进行调整。可以选择多个点。

Every blend area is adjusted using the following settings:使用以下设置调整每个混合区域：

• Enabled — if toggled on, enables the use of the blend area selected from the list.Enabled —如果启用，则启用从列表中选择的混合区域的使用。
• Link to Projection — if toggled on, allows adjusting Alpha, Contrast, and Gamma for two blends simultaneously for better neighboring of two projections. Select the projection and the blend area from the drop-down lists and adjust the necessary parameters.Link to Projection —如果启用，则允许同时调整两个混合的Alpha, Contrast和Gamma，以更好地邻接两个投影。从下拉列表中选择投影和混合区域，然后调整必要的参数。
• Name — the window to modify the blend area name.Name —修改混合区域名称的窗口。
• Alpha — transparency of the whole blended area.Alpha-整个混合区域的透明度。
• Contrast — contrast of the gradient part of the blended area.Contrast —混合区域的渐变部分的对比度。
• Gamma — gamma correction value.Gamma —伽玛校正值。

Controls soft edge blending for each side of the projection (left, right, top, and bottom). If you warp the image, the border blending becomes warped, too.控制投影各边（左，右，上和下）的柔和边缘融合。如果使图像变形，则边界融合也会变形。

• Size controls the size of the blended area:Size控制混合区域的大小：

  • 0 — there is no blending.0-没有混合。
  • 0.5 — a half of the screen is blended.0.5-混合了一半的屏幕。

• Alpha controls transparency of the blended area:Alpha控制混合区域的透明度：

  • 0 — the blended area is not transparent.0-混合区域不透明。
  • 1 — the blended area is completely transparent.1-混合区域是完全透明的。
• Contrast defines contrast of the blended area and makes transition from the darkest to the lightest area non-linear. Contrast定义混合区域的对比度，并使从最暗区域到最亮区域的转换是非线性的。 __igt

• Gamma — gamma correction value.Gamma —伽玛校正值。

  Gamma = 0.5

  Gamma = 5

注意

Border values can be reset by clicking the corresponding column or line name.可以通过单击相应的列或行名称来重置边框值。