After receiving your feedback, we are excited to share some new improvements to Terrain Material painting. Our 2019.2 Terrain Tools package lets you paint complex Terrain with less effort and includes UI changes to help speed up your workflow.

收到您的反馈后，我们很高兴与您分享“地形材料”绘画的一些新改进。 我们的2019.2 Terrain Tools软件包可让您轻松绘制复杂的Terrain，并包括UI更改以帮助加快工作流程。

This package update enhances the experience of painting Materials on Terrain. In this update, you’ll find new Brush Mask Filters, a revised Paint Texture tool, and improvements to the Terrain Toolbox workflow.

此程序包更新增强了在“地形”上绘画“材质”的体验。 在此更新中，您将找到新的“画笔蒙版滤镜”，经过修订的“绘画纹理”工具以及对“地形工具箱”工作流程的改进。

刷面膜过滤器 (Brush Mask Filters)

You might already be familiar with Brush Masks, which are Terrain Brushes that use a single-channel Texture to define the shape and strength of the Terrain area you’re working on. To adjust the grayscale mask output, you can change other Brush features such as Radius Scale, Falloff, and Remap.

您可能已经熟悉“画笔蒙版”，它们是“地形画笔”，它使用单通道“纹理”来定义您正在处理的“地形”区域的形状和强度。 要调整灰度蒙版输出，可以更改其他“画笔”功能，例如“ 半径比例” ，“ 衰减 ”和“ 重映射” 。

Brush Mask Filters are an exciting new addition to Terrain Brushes. These filters add additional operations to the Brush before computing the final Brush Mask output.

画笔蒙版滤镜是地形画笔中令人兴奋的新功能。 这些过滤器会在计算最终的“画笔蒙版”输出之前向“画笔”添加其他操作。

For example, if you use the Add filter with an input value of 5, the elevation of the sculpting area increases. This is because we’ve added 5 to each pixel of the Brush Mask.

例如，如果使用 输入值为5 的“ 添加” 过滤器，则雕刻区域的高程会增加。 这是因为我们为“画笔蒙版”的每个像素添加了5。

There are two categories of Brush Mask Filters. The first category contains math operation filters, which are commonly seen in node-based editing tools for manipulating Textures. The second category comprises of Terrain-based operations.

画笔蒙版过滤器分为两类。 第一类包含数学运算过滤器，通常在基于节点的用于处理纹理的编辑工具中看到它们。 第二类包括基于地形的操作。

A Terrain-based filter might contain a series of operations that help to isolate certain Terrain features. For instance, the Height filter uses Minimum and Maximum height values to isolate a certain height range of the Terrain. The Concavity filter helps identify exposed crevices of a Terrain, and even includes an option for detecting recessed faces. There are 15 filters available in this package release.

基于地形的过滤器可能包含一系列有助于隔离某些地形特征的操作。 例如，“ 高度” 过滤器使用“最小”和“最大”高度值来隔离地形的某个高度范围。 凹部 过滤器有助于识别地形的露出裂缝，甚至包括用于检测凹面的选项。 此软件包发行版中提供15个过滤器。

数学运算 (Math operations)

• Abs

  腹肌

• Add

  加

• Clamp

  钳

• Complement

  补充

• Max

  最高

• Min

  敏

• Multiply

  乘

• Negate

  否定

• Noise

  噪声

• Power

  功率

• Remap

  重新映射

基于地形 (Terrain-based)

• Aspect

  方面

• Concavity

  凹

• Height

  高度

• Slope

  坡

You can easily add or combine multiple filters in the Brush Mask Filters stack to achieve different results. This new feature is available to all Terrain Brushes!

您可以轻松地在“画笔蒙版滤镜”堆栈中添加或组合多个滤镜，以获得不同的结果。 此新功能适用于所有地形刷！

Unity performs the operations in order, from top to bottom. By using different combinations of Brush Mask Filters, you can achieve some really interesting and nice results, such as the Terrain Textures that appear later on in this blog post.

Unity从上到下按顺序执行操作。 通过使用画笔蒙版滤镜的不同组合，您可以获得一些非常有趣且不错的结果，例如稍后在此博客文章中出现的“地形纹理”。

组合刷面膜滤镜 (Combining Brush Mask Filters)

You can combine multiple Brush Mask Filters to create complex Brushes that fit your needs.

您可以组合多个“画笔蒙版”滤镜来创建满足您需要的复杂画笔。

Here are the steps to follow, as demonstrated in the video.

如视频所示，这是要遵循的步骤。

1. Scree: Add a Height filter to mask out the river bed and other flat areas that will be covered with water.

   Scree：添加一个 高度 过滤器以遮盖河床和其他平坦区域，这些区域将被水覆盖。

2. Sand: Adjust the Height filter to mask the river banks, and add a Slope filter to smoothen out the transitions between slope changes. Then, disable the filter to touch up areas with harsh Texture transitions. You can disable filters to quickly alter the filter stack without losing data.

   沙土：调整“ 高度” 过滤器以遮盖河岸，并添加“ 坡度” 过滤器以平滑坡度变化之间的过渡。 然后，禁用滤镜以修改具有粗糙纹理过渡的区域。 您可以禁用过滤器以快速更改过滤器堆栈而不会丢失数据。

3. Grass: Adjust the Height filter to mask out all areas below the riverbank, and adjust the curve to smoothen slope transitions.

   草：调整“ 高度” 滤镜以遮盖河岸以下的所有区域，并调整曲线以平滑坡度过渡。

4. Rock: Remove the Height filter, and adjust the slope curve to mask off flat areas. Use the Slope filter to target areas with steep slopes, and lightly blend them into the flatter grass areas.

   岩石：移除 高度 过滤器，并调整斜率曲线以遮盖平坦区域。 使用“ 坡度” 滤镜可以将目标定为具有陡峭坡度的区域，然后将它们轻轻地融合到平坦的草丛区域中。

5. Moss: Add the Complement filter, and set an input value of 1 to invert the results of the stack. Instead of targeting steep slopes, the Complement filter lets you target flat areas and shallow slopes. Then, add the Noise filter to randomize the results, and the Power filter to sharpen the areas you’re painting on. Moss has a tendency to grow in areas with high moisture, and unlike grass, it can live on steeply-sloped surfaces as well as areas with higher elevation.

   Moss：添加 补数 过滤器，并将输入值设置为1以反转堆栈的结果。 不必使用陡峭的斜坡，而是使用 补余 过滤器来锁定平坦区域和浅斜坡。 然后，添加“ 噪波” 滤镜以使结果随机化，并添加“ 功率” 滤镜以使您要绘制的区域更清晰。 苔藓倾向于在高水分的地区生长，与草不同，它可以生活在陡峭的表面以及海拔较高的地区。

6. Snow: Remove all the filters to empty the filter stack. Add a Height filter to mask off the peak of the mountain. Add an Aspect filter to mask off faces of the mountain relative to the desired direction. Use the Aspect filter to replicate snow that has been blown by a gust of wind. Add a Concavity filter to target the valleys of the summit, and replicate the accumulation areas of snow within a cirque.

   雪：卸下所有过滤器以清空过滤器堆栈。 添加 高度 过滤器以掩盖山峰。 添加一个“ 宽高比” 过滤器以遮盖相对于所需方向的山面。 使用“ 宽高比” 过滤器复制一阵风吹过的雪。 添加一个 凹面 过滤器，以目标山顶的山谷为目标，并复制圆形剧团中积雪的堆积区域。

改进的“涂料纹理”工具 (Improved Paint Texture tool)

The improved Paint Texture tool now includes a brand new Terrain Layer Eyedropper tool as well as reorderable Material Layers.

改进的“油漆纹理”工具现在包括一个全新的“地形层吸管”工具以及可重新排序的“材料层”。

吸管工具 (Eyedropper tool)

Hold Shift + A to enable the Terrain Layer Eyedropper tool, and then click on an area of the Terrain to pick a Material directly from it. The tool works similarly to the Eyedropper tool in photo editing software. This greatly speeds up the process of selecting Materials while painting.

按住 Shift + A 启用“地形图层吸管”工具，然后单击“地形”区域以直接从中选取材质。 该工具的作用类似于照片编辑软件中的吸管工具。 这大大加快了绘画时选择“材质”的过程。

可重新排序的材料层 (Reorderable Material Layers)

The Material you choose appears in the updated Material Layer UI, which now features a list that you can reorder. Reorder Material Layers in the UI to change its corresponding splat map channel. Splat maps are Material Distribution Mask Textures that Unity uses on Terrain. To simultaneously delete multiple Terrain Layers, simply enable the checkbox next to each layer, and then hit the Remove Layer button.

您选择的材料将出现在更新的“材料层” UI中，该UI现在具有您可以重新排序的列表。 在UI中重新排序“材质层”以更改其相应的splat贴图通道。 Splat贴图是Unity在Terrain上使用的“材质分布蒙版纹理”。 要同时删除多个地形图层，只需启用每个图层旁边的复选框，然后单击“ 删除图层” 按钮。

地形工具箱更新 (Terrain Toolbox updates)

The Terrain Toolbox workflow has been improved in multiple ways. You’ll notice a difference when importing both Material Layers and Splat Maps. Instead of having to manually select a Texture from the Asset folder, you can now import Textures directly from a Terrain.

Terrain Toolbox工作流程已通过多种方式进行了改进。 导入“材质层”和“ Splat贴图”时，您会发现有所不同。 现在，您不必从Asset文件夹中手动选择纹理，而是可以直接从Terrain导入纹理。

When you use external content creation software like World Machine, exported splat maps might sometimes be oriented incorrectly. Now, when you import splat maps using the Terrain Toolbox, you can preview them and adjust their orientation as needed.

当您使用诸如World Machine之类的外部内容创建软件时，导出的splat地图有时可能会定向不正确。 现在，当您使用“地形工具箱”导入splat地图时，可以预览它们并根据需要调整其方向。

On the topic of visualization, the Terrain Toolbox also has a new section for visualization tools. Use the Heatmap Altitude tool to preview the elevation of a Terrain as you sculpt it. This is great for sculpting Terrain that needs to be relatively uniform with the rest of your world. It’s also useful for sculpting Terrain from a bird’s-eye view and planning out elevation-specific features like lakes.

关于可视化主题，地形工具箱还提供了一个新的可视化工具部分。 雕刻时， 请使用“ 热图高度” 工具预览地形的高程。 这对于雕刻需要与世界其他地方相对统一的地形非常有用。 从鸟瞰图雕刻地形和规划湖泊等高程特定要素时，它也很有用。

All of these new features and updates are currently available in the latest Terrain Tools package, which you can download from the Package Manager in Unity 2019.2.0f1 or newer versions.

所有这些新功能和更新当前都在最新的Terrain Tools软件包中提供，您可以从Unity 2019.2.0f1或更高版本的软件包管理器中下载。

Our Terrain team is just getting started and will continue to work hard at developing new features. Please share your feedback with us in the World Building forum!

我们的Terrain团队才刚刚起步，并将继续努力开发新功能。 请在 世界建筑论坛上 与我们分享您的反馈 ！

翻译自: https://blogs.unity3d.com/2019/08/15/accelerate-your-terrain-material-painting-with-the-2019-2-terrain-tools-update/