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pdb.gimp_paintbrush_default 似乎很慢(几秒钟,使用标准画笔 500 点。线条显然更糟)。是这样吗?使用用户选择的画笔绘制直线时,有没有办法加快速度?

pythonfu 控制台代码:

from random import randint
img=gimp.image_list()[0]
drw = pdb.gimp_image_active_drawable(img)

width = pdb.gimp_image_width(img)
height = pdb.gimp_image_height(img)

point_number = 500
while (point_number > 0):
  x = randint(0, width)
  y = randint(0, height)
  pdb.gimp_paintbrush_default(drw,2,[x,y])
  point_number -= 1
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1 回答 1

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我一直在做一些非常相似的事情,也遇到了这个问题。这是我发现的一种技术,它使我的功能快了大约 5 倍:

  1. 创建临时图像
  2. 将您正在使用的图层复制到临时图像
  3. 在临时图层上绘制
  4. 将临时图层复制到原始图层的顶部

我相信这会加快速度,因为 GIMP 不必将编辑内容绘制到屏幕上,但我不能 100% 确定。这是我的功能:

def splotches(img, layer, size, variability, quantity):

    gimp.context_push()
    img.undo_group_start()

    width = layer.width
    height = layer.height

    temp_img = pdb.gimp_image_new(width, height, img.base_type)
    temp_img.disable_undo()

    temp_layer = pdb.gimp_layer_new_from_drawable(layer, temp_img)
    temp_img.insert_layer(temp_layer)

    brush = pdb.gimp_brush_new("Splotch")
    pdb.gimp_brush_set_hardness(brush, 1.0)
    pdb.gimp_brush_set_shape(brush, BRUSH_GENERATED_CIRCLE)
    pdb.gimp_brush_set_spacing(brush, 1000)
    pdb.gimp_context_set_brush(brush)

    for i in range(quantity):
        random_size = size + random.randrange(variability)

        x = random.randrange(width)
        y = random.randrange(height)

        pdb.gimp_context_set_brush_size(random_size)
        pdb.gimp_paintbrush(temp_layer, 0.0, 2, [x, y, x, y], PAINT_CONSTANT, 0.0)

        gimp.progress_update(float(i) / float(quantity))

    temp_layer.flush()
    temp_layer.merge_shadow(True)

    # Delete the original layer and copy the new layer in its place
    new_layer = pdb.gimp_layer_new_from_drawable(temp_layer, img)
    name = layer.name
    img.remove_layer(layer)
    pdb.gimp_item_set_name(new_layer, name)
    img.insert_layer(new_layer)

    gimp.delete(temp_img)

    img.undo_group_end()
    gimp.context_pop()
于 2016-03-08T17:38:16.973 回答