将DXF文件转换为PDF、PNG或JPEG的Python方法

Question

有没有办法将DXF文件转换成PNG或PDF？

我有大量的DXF文件，想将它们转换为图像以更快地查看。

如果可能的话，如何提取DXF文件中的值，比如绘图的厚度或尺寸。

- JareBear

Answer 1

以上代码对我没有用，我不得不替换以下部分：

fig = plt.figure()
ax = fig.add_axes([0, 0, 1, 1])
ctx = RenderContext(doc)
ctx.set_current_layout(msp)
ctx.current_layout.set_colors(bg='#FFFFFF')
out = MatplotlibBackend(ax)
Frontend(ctx, out).draw_layout(msp, finalize=True)

以下是需要的内容：

fig = plt.figure()
ctx = RenderContext(doc)

# Better control over the LayoutProperties used by the drawing frontend
layout_properties = LayoutProperties.from_layout(msp)
layout_properties.set_colors(bg='#FFFFFF')

ax = fig.add_axes([0, 0, 1, 1])

out = MatplotlibBackend(ax, params={"lineweight_scaling": 0.1})

Frontend(ctx, out).draw_layout(msp,layout_properties=layout_properties, finalize=True)

注意：请确保在开头添加以下内容：

from ezdxf.addons.drawing.properties import Properties, LayoutProperties

- Jaime Maldonado M

---

谢谢更新！原始答案可能已经过时了。Matplotlib和ezdxf可能已经有很多更新至今。 - JareBear

Answer 2

https://github.com/Hamza442004/DXF2img

import matplotlib.pyplot as plt
import ezdxf
from ezdxf.addons.drawing import RenderContext, Frontend
from ezdxf.addons.drawing.matplotlib import MatplotlibBackend
#import wx
import glob
import re

class DXF2IMG(object):

default_img_format = '.png'
default_img_res = 300
def convert_dxf2img(self, names, img_format=default_img_format, img_res=default_img_res):
    for name in names:
        doc = ezdxf.readfile(name)
        msp = doc.modelspace()
        # Recommended: audit & repair DXF document before rendering
        auditor = doc.audit()
        # The auditor.errors attribute stores severe errors,
        # which *may* raise exceptions when rendering.
        if len(auditor.errors) != 0:
            raise exception("The DXF document is damaged and can't be converted!")
        else :
            fig = plt.figure()
            ax = fig.add_axes([0, 0, 1, 1])
            ctx = RenderContext(doc)
            ctx.set_current_layout(msp)
            ctx.current_layout.set_colors(bg='#FFFFFF')
            out = MatplotlibBackend(ax)
            Frontend(ctx, out).draw_layout(msp, finalize=True)

            img_name = re.findall("(\S+)\.",name)  # select the image name that is the same as the dxf file name
            first_param = ''.join(img_name) + img_format  #concatenate list and string
            fig.savefig(first_param, dpi=img_res)

- Hamza Mohammed

---

你是最棒的！！！！这个工作太棒了！！！！非常感谢！我会编辑我的解决方案并提供一个可行的例子！ - JareBear

Answer 3

编辑!!!

import matplotlib.pyplot as plt
import ezdxf
from ezdxf.addons.drawing import RenderContext, Frontend
from ezdxf.addons.drawing.matplotlib import MatplotlibBackend
# import wx
import glob
import re


class DXF2IMG(object):

    default_img_format = '.png'
    default_img_res = 300
    def convert_dxf2img(self, names, img_format=default_img_format, img_res=default_img_res):
        for name in names:
            doc = ezdxf.readfile(name)
            msp = doc.modelspace()
            # Recommended: audit & repair DXF document before rendering
            auditor = doc.audit()
            # The auditor.errors attribute stores severe errors,
            # which *may* raise exceptions when rendering.
            if len(auditor.errors) != 0:
                raise exception("The DXF document is damaged and can't be converted!")
            else :
                fig = plt.figure()
                ax = fig.add_axes([0, 0, 1, 1])
                ctx = RenderContext(doc)
                ctx.set_current_layout(msp)
                ctx.current_layout.set_colors(bg='#FFFFFF')
                out = MatplotlibBackend(ax)
                Frontend(ctx, out).draw_layout(msp, finalize=True)

                img_name = re.findall("(\S+)\.",name)  # select the image name that is the same as the dxf file name
                first_param = ''.join(img_name) + img_format  #concatenate list and string
                fig.savefig(first_param, dpi=img_res)


if __name__ == '__main__':
    first =  DXF2IMG()
    first.convert_dxf2img(['GT-010.DXF'],img_format='.png')

@hamza-mohammed分享了一个非常好的解决方案！

完全功劳归于：https://github.com/Hamza442004/DXF2img

上面是没有GUI版本，以防有人想要真正的东西！

- JareBear

Answer 4

Dia 是 GNOME 项目中的一个工具，可以将 dxf 转换为 png 格式，同时还提供了一个 Python 接口以支持脚本编写。

- v-joe