Projection Painting
投影绘画
The advantages of projection painting 投影绘画的优点固定的笔刷大小
Projection painting is your best friend when it comes to painting objects without distortion. Take a look at the picture below. The top object was painted in the normal painting mode — note how the brushstroke is massively distorted. Contrast this with the perfect brushstroke on the bottom object, which we painted in projection painting mode.
投影绘画是你最好的朋友，当谈到绘制物体没有失真。请看下面的图片。顶部的物体是在正常的绘画模式下绘制的ーー注意笔触是如何被严重扭曲的。这与我们用投影绘画方式在底部对象上完美的笔触形成了对比。
Projection painting mode off (top) and on
(bottom).. 投影绘画模式关闭(顶部)和在(底部)
However, even projection painting will not save you if the UVs are completely out of shape. Therefore you should create at least a reasonably good UV mesh before you switch on projection painting. you will be pleased to know this is an easy task thanks to BodyPaint 3D’s powerful suite of UV editing tools.
然而，即使投影绘画将不会拯救你，如果乌布苏是完全走形。因此，您应该创建至少一个相当好的紫外线网格，然后再开关投影绘画。由于 BodyPaint 3D 强大的 UV 编辑工具套件，你会很高兴地知道这是一个简单的任务。
Painting on multiple materials and objects
在多种材质和物体上绘画
Another advantage of projection painting is that it lets you to paint on several materials or objects at the same time, even if their textures are different sizes. You can even smear over multiple textures and objects!
投影绘画的另一个优点是，它可以让你同时在几种材质或物体上绘画，即使它们的纹理大小不同。你甚至可以涂抹多个纹理和对象！
投影绘画是如何工作的
When you paint in the viewport using projection painting, a virtual projection layer is created perpendicular to the camera.
当您使用投影绘画在视区中绘制时，将创建一个与相机垂直的虚拟投影层。
Projection painting is based on a planar
projection. 投影绘画是基于平面投影
Projection painting and the Layer Manager.
投影绘制和图层管理器。
As long as the projection has not been applied,
temporary sub-layers can be added, created, etc. 只要没有应用投影，就可以添加、创建临时子层等
When in Projection Painting Mode, it is now possible to work with temporary layers using the Layer Manager. As soon as you activate the Projection Painting Mode, a PP Layer will be created in the Layer Manager. Using customary commands, you can now add new layers, change the order of layers per drag & drop (even add layer sets), make a different layer active, etc. – even in conjunction with blend modes!
当处于投影绘制模式时，现在可以使用图层管理器处理临时图层了。一旦你激活投影绘制模式，一个 PP 图层将在图层管理器中创建。使用通常的命令，你现在可以添加新的图层，改变每次拖放图层的顺序(甚至添加图层集) ，使一个不同的图层激活，等等。- 即使是混合模式！
Temporary layers will be discarded as soon as projection painting is ended, the camera view is changed or the Discard Projection command is selected. In the first two instances, the temporary layers will be permanently projected onto the texture.
一旦投影绘制结束，相机视图改变或者选择丢弃投影命令，临时层将被丢弃。在前两种情况下，临时图层将永久投影到纹理上。
However it is possible to save temporary layers as Photoshop files (and later load them) using the Save Texture As command. Although you should first take a look at the Freeze 3D View command:
不过，可以使用“另存纹理”命令将临时图层保存为 Photoshop 文件(然后加载它们)。不过你应该先看看 Freeze 3D View 命令:
冻结3D 视图
In the BP-3D layout you will find the Freeze 3D View command, which will freeze the 3D view in the current perspective with the scale that was defined (the X and Y resolution displayed reflects the current view size in monitor pixels). The view will then be frozen until the Freeze 3D View command is executed again. This command can be useful if you want to edit a texture in Photoshop and subsequently reload it.
在 BP-3D 布局中，您将找到 Freeze 3D View 命令，该命令将冻结当前透视图中定义的缩放比例(显示的 x 和 y 分辨率反映当前监视器像素的视图大小)。然后视图将被冻结，直到再次执行 Freeze 3D View 命令。如果你想在 Photoshop 中编辑一个纹理，然后重新加载它，这个命令是很有用的。
Let's say you want to paint in Projection Painting mode using temporary layers in the Layer Manager. Before a layer is created, freezed the view. When working with higher texture resolutions (and smaller views), make sure to increase the scale factor. Otherwise you can end up painting with too low of a resolution in Photoshop.
假设你想在投影绘制模式下使用图层管理器中的临时图层进行绘制。在创建图层之前，将视图冻结。当使用较高的纹理分辨率(和较小的视图)时，一定要增加缩放因子。否则你在 Photoshop 中的分辨率可能会太低。
If you now select Save Texture (in Photoshop .psd format) the temporary layers will be saved within the .psd file (with the resolution defined in the dialog window) and the file can be opened and edited in Photoshop.
如果你现在选择保存纹理(在 Photoshop 中)。Psd 格式)的临时图层将保存在。Psd 文件(分辨率在对话窗口中定义)和文件可以在 Photoshop 中打开和编辑。
Only edit the layers in the PP Layerset since these are the ones that will later be imported. All other layers are merely help layers. 只在 PP Layerset 中编辑图层，因为这些图层以后会被导入。所有其他层都只是帮助层The .psd file can be loaded back into the still temporary layers in Cinema 4D/BodyPaint 3D after it has been edited. To do so simply use the Merge Texture command (right-click on a layer: Texture / Merge Texture). This lets you switch textures seamlessly in Project Painting mode using Photoshop.
这个。Psd 文件经过编辑后，可以重新加载到 Cinema 4D/BodyPaint 3D 中仍然是临时的图层中。要做到这一点，只需使用合并纹理命令(右键单击图层: 纹理/合并纹理)。这可以让你在项目绘画模式下使用 Photoshop 无缝切换纹理。
投影绘画
应用投影
弃置投影
分离投影平面
隐藏多边形项目