选项介绍

喷枪

../../../_images/Krita_2_9_brushengine_airbrush.png

勾选喷枪选项后,按下笔刷原地不动,颜色依然会被源源不断地添加到画布上。频率越低,颜色被添加到画布上的速度就越慢。

镜像

../../../_images/Krita_Pixel_Brush_Settings_Mirror.png

This allows you to mirror the Brush tip with Sensors.

垂直

将笔刷的蒙版水平镜像。

水平

将笔刷的蒙版垂直镜像。

../../../_images/Krita_2_9_brushengine_mirror.jpg

上图是镜像选项与 旋转 选项搭配使用时的效果。

旋转

This allows you to affect Angle of your brush tip with Sensors.

../../../_images/Krita_2_9_brushengine_rotation.png ../../../_images/Krita_Pixel_Brush_Settings_Rotation.png

在上面的例子中,我们给出了五种不同传感器对笔刷旋转的影响。

  1. 笔迹走向:这是一个比较常用的传感器,经常和梳状笔刷配合使用。值得一提的是它不需要数位板就能生效。压感笔的笔身倾斜和笔身旋转有时候也会被用来得到类似的效果,但笔身倾斜把 12 点钟方向作为 0°,而笔迹走向把 3 点钟方向作为 0°。

  2. 随机度:也是一组比较常用的传感器,方便给纹理添加一点随机变化。

  3. 距离:如果你对这个传感器曲线进行精心编辑,你可以通过它画出好看的图案。

  4. 淡化:让旋转效果的过渡更加平滑。

  5. 压力:可以画出不同风格的笔画。

Lightness Strength

4.4 新版功能: This allows you to affect the Lightness Strength of your brush tip with Sensors. Only available with brush tips in Lightness Map mode.

../../../_images/lightness_strength_demo.png

This changes the contrast of the brush tip, so that at 100%, the full effect of the lightness variation is visible in the brush, while at 0% the brush paints without any lightness variation. This allows a variable impasto effect with lightness brushes, and for variation in texture stamp brushes that use a lightness-enabled brush tip.

分散

此选项控制笔尖印迹的随机分散程度,你可以通过传感器影响分散程度。下图从左到右依次为:同时在 X 轴和 Y 轴上分散,仅在 X 轴上分散,仅在 Y 轴上分散,X 轴和 Y 轴分散度映射到压力,X 轴和 Y 轴分散度映射到距离。

X 轴

在你绘画笔迹的方向上分散。

Y 轴

The scattering, perpendicular to the drawing angle (has the most effect).

../../../_images/Krita_2_9_brushengine_scatter.png

锐利度

../../../_images/Krita_Pixel_Brush_Settings_Sharpness.png

Puts a threshold filter over the brush mask. This can be used for brush like strokes, but it also makes for good pixel art brushes.

Strength

Controls the threshold, and can be controlled by the sensors below.

柔和度

Controls the extra non-fully opaque pixels. This adds a little softness to the stroke.

在 4.2 版更改: The sensors now control the threshold instead of the subpixel precision, softness slider was added.

大小

../../../_images/Krita_Pixel_Brush_Settings_Size.png

此项并非直接设定笔刷直径大小,而是控制传感器曲线对笔刷直径的影响。

So, if you want to lock the diameter of the brush, lock the Brush tip. Locking the size parameter will only lock this curve. Allowing this curve to be affected by the Sensors can be very useful to get the right kind of brush. For example, if you have trouble drawing fine lines, try to use a concave curve set to pressure. That way you’ll have to press hard for thick lines.

../../../_images/Krita_2_9_brushengine_size_01.png

Also popular is setting the size to the sensor fuzzy or perspective, with the later in combination with a 透视.

../../../_images/Krita_2_9_brushengine_size_02.png

柔和度

此项用于控制传感器对笔尖淡化程度的影响。

../../../_images/Krita_2_9_brushengine_softness.png

它的副作用是让笔刷看起来变小了。笔刷的轮廓越柔和,直径越大,这种副作用就越明显。

来源

选择笔尖颜色的来源方式。

纯色

使用当前的前景色。

渐变

Picks active gradient.

笔尖随机

给每个笔尖印迹一种随机颜色。

笔画随机

整个笔画画出随机的颜色噪点。

图案

使用当前的图案,但图案的对齐每笔不同。

笔尖锁定图案

Locks the pattern to the brushdab.

混合

Allows you to affect the mix of the 来源 color with Sensors. It will work with Plain Color and Gradient as source. If Plain Color is selected as source, it will mix between the currently selected foreground and background color. If Gradient is selected, it chooses a point on the gradient to use as painting color according to the sensors selected.

../../../_images/Krita_2_9_brushengine_mix_01.png

用例

../../../_images/Krita_2_9_brushengine_mix_02.png

流向贴图

上图左边是 Krita 绘制的流向贴图,右边是该贴图在 Blender 中的效果。笔刷选项为 来源 ‣ 渐变 和 混合 ‣ 笔迹走向 。 此处的渐变包含了 360° 的法线贴图颜色。一些着色器需要使用流向贴图来表现金属拉丝和流水效果。

渐变

效果与 来源 ‣ 渐变 配合 混合 使用时一样,但只在颜色涂抹笔刷引擎下可用。

../../../_images/Krita-tutorial5-I.6-1.png

You can either:

  • Leave the default Foreground ‣ Background gradient setting, and just change the foreground and background colors

  • Select a more specific gradient

  • Or make custom gradients.

间距

../../../_images/Krita_Pixel_Brush_Settings_Spacing.png

此选项控制 传感器笔尖 间距的影响。下图为从左到右以此为将间距映射到压力、距离、速度、随机度传感器时的效果。

../../../_images/Krita_2_9_brushengine_spacing_02.png

各向同性间距

计算间距时不考虑笔尖的宽高比,只考虑笔尖的直径。下方左图为各向异性间距,右图为各向同性间距。

../../../_images/Krita_2_9_brushengine_spacing_01.png

宽高比

此项控制传感器对笔尖宽高比的影响,对预制形状笔刷也有效。

../../../_images/Krita_3_0_1_Brush_engine_ratio.png